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KHHD004A2B41-SRZ The KHHD004A2B41-SRZ is an isolated DC-DC converter module from ABB Power Electronics. It delivers 12V at 4.2A (50W) from an 18-75V input, with 90% efficiency and 2250Vdc isolation.
Mfr Part #:

KHHD004A2B41-SRZ

Available from 1 distributors
Mfr Name: ABB Power Electronics
ABB Power Electronics
The KHHD004A2B41-SRZ is an isolated DC-DC converter module from ABB Power Electronics. It delivers 12V at 4.2A (50W) from an 18-75V input, with 90% efficiency and 2250Vdc isolation.
Total Stock: 1,312 pcs
$ Price Range: $30.68 - $34.05

KHHD004A2B41-SRZ Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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1,312 pcs
1312 pcs On Request 1 On Request On Request On Request On Request On Request

KHHD004A2B41-SRZ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Control Features
Current
Efficiency
Features
Height
Input Voltage Max
Input Voltage Min
Isolation Voltage
Length
Mounting Type
Number of Outputs
Operating Temperature
Output Voltage - Nominal
Output voltage adjust
Power (Watts)
Safety Approvals
Type
Voltage
Width

KHHD004A2B41-SRZ Description

Short technical summary and product information.

The KHHD004A2B41-SRZ is an isolated DC-DC converter module from ABB Power Electronics, part of the Hammerhead series. It delivers a regulated 12V output at 4.2A (50W) from an ultra-wide input voltage range of 18V to 75Vdc. The module achieves 90% efficiency at full load (48V input) and features a constant switching frequency.

 

This converter is designed for use in wireless networks, hybrid power architectures, optical and access network equipment, enterprise networks with Power over Ethernet (PoE), and industrial applications. It includes protections such as overcurrent, overvoltage, overtemperature, and under-voltage lockout. The output voltage can be adjusted from 80% to 110% of nominal.

 

The module is surface-mount in an 8-SMD package with dimensions of 33.0mm x 22.9mm x 9.3mm (1.30 x 0.90 x 0.37 inches). It operates over a temperature range of -40°C to 85°C. The part is RoHS3 compliant and carries UL, CSA, IEC, EN, and CE safety approvals.

KHHD004A2B41-SRZ Quick Information

Product Type: DC-DC Converter
Series: KHHD004A2B
Canonical Name: KHHD004A2B41-SRZ DC-DC Converter, 12V Output, 4.2A, 50W, Isolated Module
Subcategory: Board Mount Power Supplies

KHHD004A2B41-SRZ Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 2
REACH Status: REACH Unaffected

KHHD004A2B41-SRZ Estimated Pricing

Qty Low High
1+ $34.05 $34.05
5+ $32.78 $32.78
10+ $32.25 $32.25
25+ $31.56 $31.56
50+ $31.04 $31.04
140+ $31.19 $31.19
280+ $30.68 $30.68

Estimated market price range - modelled values for guidance only, not live distributor offers.

KHHD004A2B41-SRZ Features

  • Ultra-wide input voltage range of 18-75Vdc.
  • High efficiency of 90% at full load.
  • 2250Vdc isolation for robust safety.
  • Surface-mount 8-SMD module with compact footprint.
  • Remote on/off with active low control.

KHHD004A2B41-SRZ Applications

  • Ideal for wireless network power supplies.
  • Used in optical and access network equipment.
  • Supports Power over Ethernet (PoE) applications.
  • Suitable for industrial and hybrid power architectures.

KHHD004A2B41-SRZ FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the KHHD004A2B41-SRZ?

The input voltage range is 18V to 75Vdc.

What is the output voltage and current?

The output is 12V at 4.2A, providing 50W of power.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

What is the package type of this converter?

The package type is 8-SMD Module, surface mount.

Is the KHHD004A2B41-SRZ RoHS compliant?

Yes, it is RoHS3 compliant as per EU Directive 2011/65/EU.

What safety approvals does this module have?

It has UL 60950-1, CSA C22.2 No. 60950-1, IEC 60950-1, EN 60950-1, and CE approvals.

What is the isolation voltage rating?

The isolation voltage is 2250Vdc, tested per IEEE 802.3 PoE standards.

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