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ESP040W-0940-43 Constant current LED driver from ERP Power, LLC. Output 35-43VDC at 940mA, 40W, input 120-277VAC, 87% efficiency, IP64 rated.
Mfr Part #:

ESP040W-0940-43

Available from 1 distributors
Mfr Name: ERP Power, LLC
ERP Power, LLC
Constant current LED driver from ERP Power, LLC. Output 35-43VDC at 940mA, 40W, input 120-277VAC, 87% efficiency, IP64 rated.
Total Stock: 847 pcs

ESP040W-0940-43 Available from 1 distributor

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ESP040W-0940-43 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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ESP040W-0940-43 Description

Short technical summary and product information.

The ESP040W-0940-43 is a constant current LED driver from ERP Power, LLC, part of the ESP series. It delivers 40W output at 940mA with an output voltage range of 35 to 43 VDC. The driver accepts universal input voltage from 120 to 277 VAC and achieves up to 87% typical efficiency with a power factor greater than 0.9 and total harmonic distortion below 20%.

 

This driver supports tri-mode dimming including 0-10V analog, TRIAC (forward-phase), and ELV (reverse-phase) dimming methods, with a dimming range of 1% to 100%. It features a fast startup time of 300 ms typical. Protection features include over-current protection (OCP), over-temperature protection (OTP), and short-circuit protection (SCP) with auto recovery.

 

The driver is housed in an IP64-rated plastic case with silicone-based potting, making it suitable for damp locations. It measures 87.0 mm x 59.9 mm x 27.2 mm and terminates with wire leads. The operating temperature range is -30°C to 90°C with a maximum case temperature of 90°C. Rated lifetime is 50,000 hours minimum at 70°C case temperature.

ESP040W-0940-43 Quick Information

Product Type: LED Driver
Series: ESP040W
Canonical Name: ESP040W-0940-43 LED Driver, Constant Current, 40W, 940mA, 35-43VDC
Subcategory: AC-DC LED Driver

ESP040W-0940-43 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

ESP040W-0940-43 Features

  • Constant current output of 940 mA.
  • Supports 0-10V, TRIAC, and ELV dimming.
  • IP64 rated for damp location use.
  • 87% typical efficiency with PF > 0.9.
  • 50,000 hour lifetime at 70°C case.

ESP040W-0940-43 Applications

  • Ideal for commercial LED downlight fixtures.
  • Suitable for architectural lighting applications.
  • Used in residential LED lighting installations.
  • Drives constant current LED modules and arrays.

ESP040W-0940-43 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output current of the ESP040W-0940-43?

The output current is 940 mA, constant current.

What input voltage range does this driver support?

It accepts 120 to 277 VAC input voltage.

What dimming methods are compatible?

It supports analog (0-10V), ELV, and TRIAC dimming.

What is the operating temperature range?

The operating temperature range is -30°C to 90°C.

Is this driver RoHS compliant?

Yes, it is listed as RoHS3 Compliant.

What is the ingress protection rating?

The driver has an IP64 rating.

What protections does this driver include?

It includes over-current, over-temperature, and short-circuit protection.

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