CATEGORIES
WLD33ND 3 A Laser Diode Driver
- Small Size: 1.30" X 1.28" X 0.313"
- Slow Start Laser Diode Protection
- TTL Compatible Shutdown Pin
- Adjustable Laser Diode Current Limit
- Over temperature output shutdown
- 14 pin DIP PCB mount
- Up to 3.0 A CW laser diode current
- Constant Current or Constant Power Mode
- Voltage Controlled Setpoint
- Bandwidth 2 MHz (CC, sine wave)
1 - 5 each
$137.00
-
1 - 5 each$137.00
-
6 - 14 each
$137.00$127.00 -
15 - 24 each
$137.00$124.00 -
25+ each
$137.00$121.00
Contact Factory for High Volume Pricing
Price adjustments will be reflected in the cart. For availability information please contact us.
All prices are in US dollars. Prices do not include shipping charges. All prices will be confirmed at time of shipment and may include pass-through tariff estimates.
If ordering from or shipping to Australia, China, or Hong Kong, please contact your distributor.
The WLD33ND-3A is a general purpose laser diode driver that maintains precision laser diode current (Constant Current mode) or stable photodiode current (Constant Power mode) using electronics that are compatible with any laser diode type. It delays and slowly ramps the current for maximum protection. Supply up to 3.0 A of current to your laser diode from a single +5 V power source. An evaluation board is available to simplify prototyping: WLD33ND-3AEV.
An internal thermostat shuts down the WLD safely if the device temperature exceeds 105°C. This device operates to 45°C ambient temperature. Remotely enable or disable current. Current range is scaled by an external resistor.
For 2.2 A operation, the WLD33ND is available. These drivers have noise above 45 µA. To drive with lower noise in Constant Current Mode only, the WLD33ND-2L and WLD33ND-3L drive up to 2.2 A and 3 A, respectively. A circuit calculator tool speeds selection of external component values (see Design Tools tab). Heatsinking solutions to use the WLD33ND-3A at full current are available.
This laser diode driver is ideal for applications where space is tight. It is widely used in electro-optic qualification, Raman spectroscopy, medical diagnostic equipment, range finders, eye-safe atmospheric lidar and on research benches.
Free, effective, and responsive technical support is available to simplify integration of Wavelength products into your OEM design. Standard product can be easily modified to meet your application requirements.
1 Hour Current Stability at ambient 25°C: 200 ppm
Supply Range: +5 to +12 V
Package: 14 pin DIP PCB mount (33 x 32 x 8 mm)
Laser Diode Output Current: up to 3.0 A
Delay: 240 msec.
Current Ramp: 10 msec
Rise time: 100 nsec
Fall time: 200 nsec
Noise: >45 µA (100 mA, 100 kHz)
For low noise operation in Constant Current mode, see WLD33ND-2L and WLD33ND-3L.
TTL Compatible RESET / ENABLE input is active LO.
Bandwidth: 2 MHz – Constant Current sine wave
Maximum Power Dissipation 9 W (with full thermal kit)
Heatspreader Temperature Rise: 30°C / W without external heatsinking
Circuit Diagram Example: WLD33ND in Constant Current mode with a Type A/B Laser Diode (Top View)
MECHANICAL / CAD DRAWINGS
- WxxND Series Controller Assembly (IGS)
- WxxND Series Controller Assembly (PDF)
- WxxND Series Controller Assembly (SLDDRW)
- WxxND Series Controller Assembly (SLDPRT)
- WxxND Series Controller Assembly (STL)
- WxxND Series Controller with WEV300 Thermal Kit Assembly (IGS)
- WxxND Series Controller with WEV300 Thermal Kit Assembly (PDF)
- WxxND Series Controller with WEV300 Thermal Kit Assembly (SLDDRW)
- WxxND Series Controller with WEV300 Thermal Kit Assembly (SLDPRT)
- WxxND Series Controller with WEV300 Thermal Kit Assembly (STL)
- WxxND Series Controller with WEV301 Thermal Kit Assembly (IGS)
- WxxND Series Controller with WEV301 Thermal Kit Assembly (PDF)
- WxxND Series Controller with WEV301 Thermal Kit Assembly (SLDDRW)
- WxxND Series Controller with WEV301 Thermal Kit Assembly (SLDPRT)
- WxxND Series Controller with WEV301 Thermal Kit Assembly (STL)
SOFTWARE
APPLICATION & TECH NOTES
- AN-LD11: How to Add Complex Technology -- Build or Buy?
- AN-LD13: Laser Diode Driver Basics
- AN-LD16: Grounding with Special Laser Diode Configurations
- AN-LD17: Photodiode Basics - Selection and Operation
- AN-LD18: Optimizing Laser Diode Control
- AN-LDTC01: The Principle of the Safe Operating Area
- AN-LDTC02: Environmental Regulation Compliance Guide
- AN-LDTC03: Power Supply Basics
- AN-LDTC04: Test Load Basics
- AN-LDTC05: Bandwidth Basics
- AN-LDTC06: ESD Basics
- AN-LDTC07: Tips on Improving Manufacturability
- AN-LDTC08: Product Selection & Comparison
ACCESSORIES
| SKU | DESCRIPTION | PRICE | IMAGE |
| WLD33ND-3AEV | Evaluation PCB for WLD33ND 3A & 3L Laser Diode Drivers |
$182.00 You save (%) |
 |
| WHS302 | WHS302 Heatsink for WXX Controllers |
$16.00 You save (%) |
 |
| WTW002 | WTW002 Thermal Washer for Wxx Controllers |
$3.00 You save (%) |
 |
| WXC303 | WXC303 +5 V Fan |
$33.00 You save (%) |
 |
| WXC304 | WXC304 +12 V Fan |
$33.00 You save (%) |
 |
| WXC305 | WXC305 Screw Kit | $6.00 |  |
KITS
| SKU | DESCRIPTION | PRICE | IMAGE |
| WEV300 | WEV300 Thermal Solution Kit |
$25.00 You save (%) |
 |
| WEV301 | WEV301 Thermal Solution Kit with +5 V Fan |
$51.00 You save (%) |
 |
| WEV302 | WEV302 Thermal Solution Kit with +12 V Fan |
$51.00 You save (%) |
 |
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