SDC-200 diode driver

Available for order

Applications

Diode pumping for DPSS lasers such as Nd:YAG

Features

Input – 24 V DC
Output (for different models) – up to 400 A, up to 450 V, up to 100 W
Pulse width – 50-300 us
Repetition rate – up to 100 Hz
Rise time – < 20-30 us typically
1x high-power TEC + 1x low-power TEC inside
Possibility to control an extra external Pockels cell driver

Available for order

Downloads: Downloads

sdc-200-hv-step.zip (Zip archive, 8 MB)

sdc-200-hv-step.zip 8 MB Updated August 17, 2026
sdc-200-lv-step.zip (Zip archive, 8 MB)

sdc-200-lv-step.zip 8 MB Updated August 17, 2026
sdc-200-manual-en.pdf (2 MB)

sdc-200-manual-en.pdf 2 MB Updated August 17, 2026

File	Size	Updated
sdc-200-hv-step.zip	8 MB	August 17, 2026
sdc-200-lv-step.zip	8 MB	August 17, 2026
sdc-200-manual-en.pdf	2 MB	August 17, 2026

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Product Description

The SDC-200 pulsed laser diode driver series is specifically engineered to deliver reliable power for medium-power diode-pumped solid-state (DPSS) lasers, including Nd:YAG systems. Designed for precision performance, this module provides a pulsed current with pulse widths ranging from 50 to 300 µs to efficiently drive pump diodes. It is capable of delivering up to 100 W of average power and fully supports pulse repetition rates of up to 100 Hz (when operating at smaller output voltages and currents).

Built for seamless integration into complex optical setups, the SDC-200 allows for precise synchronization with other laboratory or clinical equipment via dedicated Synchro In and Synchro Out ports. Additionally, the unit is equipped to power and control a Pockels cell driver, making it an ideal solution for the generation of Q-switched pulses.

To ensure optimal operational control, all critical parameters of the SDC-200—such as output current, buffer voltage, pulse width, and pulse repetition rate—can be easily managed from a computer. The module supports connectivity via USB or the default RS-485 interface, with RS-232 connectivity available upon request. We also offer various custom modifications to meet the exact requirements of your specific application.

Need a standalone benchtop solution? We offer a fully encased version of the SDC-200 featuring an intuitive 5” color touchscreen display. Please visit the SDC-BT product page for more information.

Driver Architecture:

sdc-200 diode driver

Technical Specifications

INPUT
Voltage	24 V DC
Current consumption	< 15 A
OUTPUT
Regime of operation	pulsed
Maximum buffer voltage (V_max)	model dependent (user selectable up to 450 V), other on request
Maximum output voltage	model dependent (see also How to order?), other on request
Maximum output current (I_max or I₂₅₀)	model dependent (user selectable up to 400 A), other on request I_max is fully achievable at pulse widths up to 250 us, and is derated at longer pulses
Output current	approx. 10-100 % of I_max adjustable, other on request
Buffer voltage	adjustable in 10 V – V_max range, other on request
Pulse width	adjustable in 50 us – T_max range, T_max is 300 us by default, other on request
Rise time	< 20-30 us typically, slow start ramp adjustable in 0-50 us range
Pulse repetition rate	up to 50/100 Hz adjustable, other on request
Maximum average output power	100 W, model dependent, other on request
Peak power	model dependent (usually in the 20-50 kW range), other on request
Bias current	+, model dependent (~50-100 mA)
TEC 1
Current	up to 10 A
Voltage	up to 20 V
Power	200 W max.
Feedback loop	10 kOhm NTC
Temperature	+10 … +40 °C by default, other on request
TEC 2
Current	up to 5 A
Voltage	up to 20 V
Power	50 W max.
Feedback loop	10 kOhm NTC
Temperature	+10 … +40 °C by default, other on request
MISCELLANEOUS
Protections	• from overheating • from incorrect buffer voltage • TEC1 out of range • TEC2 out of range • too high input frequency • door interlock connection
Cooling	conductive through the bottom heatsink
Interfaces	• USB • RS-485 (RS-232 on request) machine interface
Synchronizations	• 1 pc synchro input • 1 pc synchro output
Pockels cell driver control	yes, the Pockels cell driver needs to be purchased separately, placed outside and connected with a cable
ENVIRONMENT
Operating temperature	+10 … +40 °C
Storage temperature	-20 … +60 °C
Humidity	0 … 90%, non-condensing
OTHER
Size (LxWxH)	150x130x50(60) mm, see How to order? section
Weight	< 0.5 kg

Options

Different customizations (e.g. non-standard output currents, non-standard diode voltages, software customizations, Pockels cell driver control) are possible on request.

Encased version of the SDC-200 is available under the name SDC-BT.
SDC-BT diode driver

SDC-BT diode driver

How To Order

SDC-200-XXXX-[YYYY]-[VVVVV], where:

XXXX code denotes the voltage version of the driver (nominal value, can be 63 V, 80 V, 100 V, 126 V, 160 V, 200 V, 250 V, 400 V, 450 V, or custom). The maximum output current, internal capacitor bank capacitance, average output power, and number of TECs are fixed for each voltage version, see details in the table below.
YYYY defines low‑current and high‑current versions of the driver. The low‑current versions are optimized for low‑current diodes and for operating regimes with low energy but high repetition rates. It is reasonable to choose a low‑current version, which provides improved output‑current quality in the low‑current region, if the maximum operating current in your system is at least three times lower than the I_max of the standard model. If not specified, the standard version is supplied.
VVVVV code denotes the type of communication interface, it can be either RS232 or RS485. By default, the RS485 version is supplied.

LOW-VOLTAGE VERSIONS

PARAMETER	VALUE ⁽¹⁾
	SDC-200-63V	SDC-200-80V	SDC-200-100V	SDC-200-126V
Embedded capacitor bank:
Voltage (V_max), V	63	80	100	126
Capacitance, mF	10.8	10.8	6.0	3.6
Capacitor charging power supply:
Buffer voltage, V	10…63	10…80	10…100	10…126
Maximum power in dependence on buffer voltage, W ⁽²⁾	> 100 @ 30V…63V	> 100 @ 30V…80V	> 100 @ 30V…100V	> 100 @ 30V…126V
Diode driver:
Maximum output current, A: – @ 250 us (I₂₅₀) – @ 300 us (I₃₀₀)	350 300	350 300	300 250	250 200
Minimum output current, A	10
Recommended diode voltage, V ⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	< 47 < 50	< 63 < 69	< 79 < 87	< 96 < 107
Maximum pulse width (T_max), us	300
Minimum pulse width, us	50
Maximum repetition rate, Hz ⁽⁴⁾	100
Output limitations:
Pulse energy limit, J I₃₀₀V_maxT_max	~5.6	~7.2	~7.5	~7.5
Power limit, W	100
Guaranteed regime	300A-46V- 300us-15Hz or 100A-25V- 250us-100Hz	300A-63V- 300us-10Hz or 100A-25V- 250us-100Hz	250A-79V- 300us-10Hz or 100A-25V- 250us-100Hz	200A-96V- 300us-10Hz or 100A-25V- 250us-100Hz
TEC 1	+	+	+	+
TEC 2	+	+	+	+
Height (H), mm	< 50	< 55	< 50	< 60
Low-current versions	SDC-200-63V-100A	SDC-200-80V-100A	on request	on request
I₂₅₀ / I₃₀₀, A	100 / 100	100 / 100	–	–
I_min, A	5	5	–	–
Height (H), mm	< 50	< 55	–	–
High-current versions	SDC-200-63V-400A	SDC-200-80V-400A	on request	on request
Capacitance, mF	14.4	14.4	–	–
I₂₅₀ / I₃₀₀, A	400 / 350	400 / 350	–	–
I_min, A	10	10	–	–
Recommended diode voltage, V⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	< 46 < 52	< 63 < 69	–	–
Guaranteed regime	400A-44V- 250us-10Hz or 350A-44V- 300us-10Hz	400A-44V- 250us-10Hz or 350A-44V- 300us-10Hz	–	–
Height (H), mm	< 60	< 60	–	–

⁽¹⁾ Customizations (e.g. non-standard output currents, non-standard diode voltages and other parameters, software customizations, Pockels cell driver control customizations) are possible on request.

⁽²⁾ In dependence on the topology of the internal DC/DC power converter the dependence of the output power of the capacitor charger from the output voltage is principally different for different models of SDC-200. Two low-voltage models deliver full output power in a wide range of the output voltages. Unlike them, two high-voltage models are able to deliver full output power close to V_max only. At lower output voltages the output power of high-voltage models drops approx. linearly with decreasing output voltage.

⁽³⁾ Please note that the output voltage applied to the diodes is several volts lower than the buffer voltage due to voltage drops across internal components and wiring. The higher output current and pulse width are, the lower output voltage is possible with the same buffer voltage. On the contrary, the possible output voltage reaches exactly the buffer voltage at very low currents and pulse widths.

⁽⁴⁾ If the diode voltage is close to V_max and the operating current is close to I_max, the typical pulse energy is ~5–7 J, and 100 Hz operation is not possible due to the 100 W average power limitation. Therefore, 100 Hz operation is only possible when the operating current and/or voltage are several times lower than I_max and V_max, respectively. In such cases, it may be reasonable to consider a low‑current version of the driver.

Examples:

– SDC-200-63V – fully standard 63 V version with all the parameters as given above
– SDC-200-63V-100A-RS232 – low-current version of 63 V model with RS-232 communication interface instead of RS-485

HIGH-VOLTAGE VERSIONS

PARAMETER	VALUE ⁽¹⁾
	SDC-200-160V	SDC-200-200V	SDC-200-250V	SDC-200-400V
Embedded capacitor bank:
Voltage (V_max), V	160	200	250	400
Capacitance, uF	2700	2200	1500	820
Capacitor charging power supply:
Buffer voltage, V	10…160	10…200	10…250	10…400
Maximum power in dependence on buffer voltage, W ⁽²⁾	> 100 @ 160V	> 100 @ 200V	> 100 @ 250V	> 100 @ 400V
Diode driver:
Maximum output current, A: – @ 250 us (I₂₅₀) – @ 300 us (I₃₀₀)	225 200	200 175	175 150	125 100
Minimum output current, A	10	10	10	5
Recommended diode voltage, V ⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	< 118 < 137	< 144 < 161	< 196 < 223	< 333 < 357
Maximum pulse width (T_max), us	300
Minimum pulse width, us	50
Maximum repetition rate, Hz ⁽⁴⁾	50
Output limitations:
Pulse energy limit, J I₃₀₀V_maxT_max	~9.6	~10.5	~11.2	~12.0
Power limit, W	100
Guaranteed regime	225A-137V- 250us-10Hz or 110A-140V- 250us-20Hz or 50A-120V- 250us-50Hz	200A-160V- 250us-10Hz or 100A-150V- 250us-20Hz or 50A-110V- 250us-50Hz	150A-195V- 250us-10Hz or 100A-148V- 250us-20Hz or 50A-105V- 250us-50Hz	100A-330V- 250us-10Hz or 50A-360V- 250us-20Hz or 50A-100V- 250us-50Hz
TEC 1	+	+	+	+
TEC 2	N/A
Height (H), mm	< 60
Alternative versions	on request	on request	on request	SDC-200-450V
Capacitance, uF	–	–	–	780
I₂₅₀ / I₃₀₀, A	–	–	–	125 / 100
I_min, A	–	–	–	5
Recommended diode voltage, V ⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	–	–	–	< 371 < 403
Guaranteed regime	–	–	–	100A-330V- 250us-10Hz or 50A-360V- 250us-20Hz or 50A-120V- 250us-50Hz
Height (H), mm	–	–	–	< 60

⁽⁴⁾ If the diode voltage is close to V_max and the operating current is close to I_max, the typical pulse energy is ~10–12 J, and 50 Hz operation is not possible due to the 100 W average power limitation. Therefore, 50 Hz operation is only possible when the operating current and/or voltage are several times lower than I_max and V_max, respectively. In such cases, it may be reasonable to consider a low‑current version of the driver.

Examples:

– SDC-200-400V – fully standard 400 V version with all the parameters as given above
– SDC-200-250V-RS232 – standard 250V version, but with RS-232 communication interface

INPUT
Voltage	24 V DC
Current consumption	< 15 A
OUTPUT
Regime of operation	pulsed
Maximum buffer voltage (V_max)	model dependent (user selectable up to 450 V), other on request
Maximum output voltage	model dependent (see also How to order?), other on request
Maximum output current (I_max or I₂₅₀)	model dependent (user selectable up to 400 A), other on request I_max is fully achievable at pulse widths up to 250 us, and is derated at longer pulses
Output current	approx. 10-100 % of I_max adjustable, other on request
Buffer voltage	adjustable in 10 V – V_max range, other on request
Pulse width	adjustable in 50 us – T_max range, T_max is 300 us by default, other on request
Rise time	< 20-30 us typically, slow start ramp adjustable in 0-50 us range
Pulse repetition rate	up to 50/100 Hz adjustable, other on request
Maximum average output power	100 W, model dependent, other on request
Peak power	model dependent (usually in the 20-50 kW range), other on request
Bias current	+, model dependent (~50-100 mA)
TEC 1
Current	up to 10 A
Voltage	up to 20 V
Power	200 W max.
Feedback loop	10 kOhm NTC
Temperature	+10 … +40 °C by default, other on request
TEC 2
Current	up to 5 A
Voltage	up to 20 V
Power	50 W max.
Feedback loop	10 kOhm NTC
Temperature	+10 … +40 °C by default, other on request
MISCELLANEOUS
Protections	• from overheating • from incorrect buffer voltage • TEC1 out of range • TEC2 out of range • too high input frequency • door interlock connection
Cooling	conductive through the bottom heatsink
Interfaces	• USB • RS-485 (RS-232 on request) machine interface
Synchronizations	• 1 pc synchro input • 1 pc synchro output
Pockels cell driver control	yes, the Pockels cell driver needs to be purchased separately, placed outside and connected with a cable
ENVIRONMENT
Operating temperature	+10 … +40 °C
Storage temperature	-20 … +60 °C
Humidity	0 … 90%, non-condensing
OTHER
Size (LxWxH)	150x130x50(60) mm, see How to order? section
Weight	< 0.5 kg

SDC-200-XXXX-[YYYY]-[VVVVV], where:

XXXX code denotes the voltage version of the driver (nominal value, can be 63 V, 80 V, 100 V, 126 V, 160 V, 200 V, 250 V, 400 V, 450 V, or custom). The maximum output current, internal capacitor bank capacitance, average output power, and number of TECs are fixed for each voltage version, see details in the table below.
YYYY defines low‑current and high‑current versions of the driver. The low‑current versions are optimized for low‑current diodes and for operating regimes with low energy but high repetition rates. It is reasonable to choose a low‑current version, which provides improved output‑current quality in the low‑current region, if the maximum operating current in your system is at least three times lower than the I_max of the standard model. If not specified, the standard version is supplied.
VVVVV code denotes the type of communication interface, it can be either RS232 or RS485. By default, the RS485 version is supplied.

LOW-VOLTAGE VERSIONS

PARAMETER	VALUE ⁽¹⁾
	SDC-200-63V	SDC-200-80V	SDC-200-100V	SDC-200-126V
Embedded capacitor bank:
Voltage (V_max), V	63	80	100	126
Capacitance, mF	10.8	10.8	6.0	3.6
Capacitor charging power supply:
Buffer voltage, V	10…63	10…80	10…100	10…126
Maximum power in dependence on buffer voltage, W ⁽²⁾	> 100 @ 30V…63V	> 100 @ 30V…80V	> 100 @ 30V…100V	> 100 @ 30V…126V
Diode driver:
Maximum output current, A: – @ 250 us (I₂₅₀) – @ 300 us (I₃₀₀)	350 300	350 300	300 250	250 200
Minimum output current, A	10
Recommended diode voltage, V ⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	< 47 < 50	< 63 < 69	< 79 < 87	< 96 < 107
Maximum pulse width (T_max), us	300
Minimum pulse width, us	50
Maximum repetition rate, Hz ⁽⁴⁾	100
Output limitations:
Pulse energy limit, J I₃₀₀V_maxT_max	~5.6	~7.2	~7.5	~7.5
Power limit, W	100
Guaranteed regime	300A-46V- 300us-15Hz or 100A-25V- 250us-100Hz	300A-63V- 300us-10Hz or 100A-25V- 250us-100Hz	250A-79V- 300us-10Hz or 100A-25V- 250us-100Hz	200A-96V- 300us-10Hz or 100A-25V- 250us-100Hz
TEC 1	+	+	+	+
TEC 2	+	+	+	+
Height (H), mm	< 50	< 55	< 50	< 60
Low-current versions	SDC-200-63V-100A	SDC-200-80V-100A	on request	on request
I₂₅₀ / I₃₀₀, A	100 / 100	100 / 100	–	–
I_min, A	5	5	–	–
Height (H), mm	< 50	< 55	–	–
High-current versions	SDC-200-63V-400A	SDC-200-80V-400A	on request	on request
Capacitance, mF	14.4	14.4	–	–
I₂₅₀ / I₃₀₀, A	400 / 350	400 / 350	–	–
I_min, A	10	10	–	–
Recommended diode voltage, V⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	< 46 < 52	< 63 < 69	–	–
Guaranteed regime	400A-44V- 250us-10Hz or 350A-44V- 300us-10Hz	400A-44V- 250us-10Hz or 350A-44V- 300us-10Hz	–	–
Height (H), mm	< 60	< 60	–	–

Examples:

HIGH-VOLTAGE VERSIONS

PARAMETER	VALUE ⁽¹⁾
	SDC-200-160V	SDC-200-200V	SDC-200-250V	SDC-200-400V
Embedded capacitor bank:
Voltage (V_max), V	160	200	250	400
Capacitance, uF	2700	2200	1500	820
Capacitor charging power supply:
Buffer voltage, V	10…160	10…200	10…250	10…400
Maximum power in dependence on buffer voltage, W ⁽²⁾	> 100 @ 160V	> 100 @ 200V	> 100 @ 250V	> 100 @ 400V
Diode driver:
Maximum output current, A: – @ 250 us (I₂₅₀) – @ 300 us (I₃₀₀)	225 200	200 175	175 150	125 100
Minimum output current, A	10	10	10	5
Recommended diode voltage, V ⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	< 118 < 137	< 144 < 161	< 196 < 223	< 333 < 357
Maximum pulse width (T_max), us	300
Minimum pulse width, us	50
Maximum repetition rate, Hz ⁽⁴⁾	50
Output limitations:
Pulse energy limit, J I₃₀₀V_maxT_max	~9.6	~10.5	~11.2	~12.0
Power limit, W	100
Guaranteed regime	225A-137V- 250us-10Hz or 110A-140V- 250us-20Hz or 50A-120V- 250us-50Hz	200A-160V- 250us-10Hz or 100A-150V- 250us-20Hz or 50A-110V- 250us-50Hz	150A-195V- 250us-10Hz or 100A-148V- 250us-20Hz or 50A-105V- 250us-50Hz	100A-330V- 250us-10Hz or 50A-360V- 250us-20Hz or 50A-100V- 250us-50Hz
TEC 1	+	+	+	+
TEC 2	N/A
Height (H), mm	< 60
Alternative versions	on request	on request	on request	SDC-200-450V
Capacitance, uF	–	–	–	780
I₂₅₀ / I₃₀₀, A	–	–	–	125 / 100
I_min, A	–	–	–	5
Recommended diode voltage, V ⁽³⁾: – @ I₃₀₀, 300 us – @ ½I₂₅₀, 250 us	–	–	–	< 371 < 403
Guaranteed regime	–	–	–	100A-330V- 250us-10Hz or 50A-360V- 250us-20Hz or 50A-120V- 250us-50Hz
Height (H), mm	–	–	–	< 60

Examples:

– SDC-200-400V – fully standard 400 V version with all the parameters as given above
– SDC-200-250V-RS232 – standard 250V version, but with RS-232 communication interface

Products in this series:

SDC-150A diode controller

SDC-400 diode driver

Warranty Policy

Vigitek, Inc. provides a limited warranty on select products we manufacture and sell (for example: diode drivers, capacitor charging power supplies, and controllers). Warranty coverage and duration may vary by product and will be confirmed on your quote, order confirmation, or invoice. For custom/OEM developments or engineering services, warranty terms are governed by the applicable project agreement.

Warranty Coverage

This limited warranty covers defects in materials and workmanship under normal use and service, when the product is installed, operated, and maintained according to Vigitek documentation or written instructions. Warranty coverage begins on the date of shipment or delivery (unless otherwise stated in writing).

Not Covered

Normal wear and tear, cosmetic damage, or consumable parts (if applicable).
Damage caused by misuse, abuse, accidents, improper handling/storage, improper installation, or operation outside published specifications.
Damage caused by electrical issues (incorrect voltage, wiring errors, power surges), environmental conditions beyond the product rating, or inadequate cooling/ventilation.
Failures resulting from unauthorized modifications, firmware changes, tampering, or repair/service performed by anyone not authorized by Vigitek.
Integration issues with third-party components or systems, unless explicitly included in the written scope for a supplied system.
Downtime, lost profits, or other indirect/incidental/consequential damages (to the extent permitted by law).
Labor for removal/reinstallation, on-site service, and shipping/freight unless explicitly stated in writing.

How To Request Warranty Service

Please contact us to obtain a Return Authorization (RA) before sending any product/part back for evaluation.

Email: sales@vigitek.biz
Phone: +1 (203) 829-5756

Include your order/invoice number, product model and serial number (if applicable), a clear description of the issue, operating conditions, and photos/video when possible. We may ask you to perform basic troubleshooting steps to speed up resolution.

Evaluation, Repair, Replacement

If the issue is determined to be a covered warranty claim, Vigitek will, at our option:

Repair the product/part, or
Replace the product/part with the same or a functionally equivalent item (new or refurbished), or
Provide a refund/credit up to the purchase price of the affected item/part.

Repaired or replaced items are covered for the remainder of the original warranty period, unless otherwise required by law.

Returns and Packaging

Products returned for evaluation must be packaged appropriately to prevent transit damage and must display the RA information as instructed. Items returned without prior authorization may be refused. Transit damage is not covered by this warranty.

Additional Terms

Except as expressly stated above, this warranty is provided in lieu of all other warranties, express or implied, including (to the extent permitted by law) implied warranties of merchantability and fitness for a particular purpose. Some jurisdictions do not allow certain limitations, so parts of this policy may not apply to you.