2PCS 2.5A 638nm 300-700mW Orange Red Laser Diode Constant Current Driver Board

Description

2PCS 2.5A 638nm 300-700mW Orange Red Laser Diode Constant Current Driver Board
Design Features:
Circuit control: external MOS, constant current output
Power adjustment: Remove the 1206 package resistor on the board to reduce the output current
Working voltage: input 3-4.2V
Output voltage: 3V or less
Dimensions: 10*20mm (width * length), board thickness 1.0mm
Reverse connection protection: unique reverse connection protection design, you don’t have to worry about burning the battery when you are careless
Important note: If you are driving a 300mW 638nm diode, you only need to remove the R030 resistor. If you are driving a 500mW or 700mW, you only need to remove the two R100 resistors above.
Pin definition: The pads are specially designed for 300-700mW 638nm pins. You only need to arrange the pins in a triangular arrangement and solder them naturally. Unlike other boards, you need to cut off a pin or solder in a staggered way!
This board can also be used to drive 808nm and 660nm laser tubes, but the leads need to be soldered out. For example, it can be used for 808nm 300mW with 1 ohm resistor.
It is recommended to use 3.7V lithium battery (16340, 18650, 14500 and 18500 power supply), or directly use 5V DC power supply.
Package
2PCS 2.5A 638nm 300-700mW Orange Red Laser Diode Constant Current Driver Board
Payment Details
We only accept Paypal Psyment.
We will send the item to you as soon as you won and paid.
Delivery Details
We provide standard shipping to international via China Post airmail or Hongkong Post airmail with tracking number.Email us if not receive items.
We only ship to the approved address given in Paypal Payment.Please make sure payment address in Paypal is correct.Any non-received items caused by invalid address registered on Paypal are not in our full refund or replacement policy.
Returns and Replacements
We accept returns and replacements within 30 days from the day the cutomer receive the products.Please make first contact within 30 days from receiving the order.Products should be returned in original condition.
About Feedback
We will try our best to solve any dispute and satisfy our customers.
Please contact us firstly if you have any problems.As you know,a negative feedback can deal nothing and the positive feedback is very important for us.So we hope to your understanding.And we will appreciate if  you would like to contact us for solving your problems well.Thanks!