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Lan Transformer: VOOHU WHS06A01A0 as Replacement for Pulse HMU2103NL

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2026.Jun.01

Lan Transformer: VOOHU WHS06A01A0 as Replacement for Pulse HMU2103NL

1. Competitor Product Overview (Pulse Electronics / YAGEO)

Pulse Electronics (a YAGEO Company) HMU2103NL (Tape & Reel: HMU2103NLT) is an automotive-grade integrated Transformer/CMC (Common Mode Choke) SMD module in a 6-pin package, AEC-Q200 qualified, with 4300 VDC isolation and an operating temperature of -40°C to +125°C. It is RoHS compliant and widely used in automotive CAN bus, BMS (Battery Management Systems), and other applications requiring high-voltage isolation and EMI suppression.

 

2. VOOHU Replacement Product (Su Zhou Voohu Electronic Tech. Co., Ltd.)

VOOHU WHS06A01A0 is the ideal drop-in replacement offering equivalent functionality with superior cost-effectiveness and supply stability. Designed specifically for BMS applications, it is a 6-pin SMD transformer with 4300 VDC isolation, AEC-Q200 qualified, operating from -40°C to +125°C, REACH & RoHS compliant, and pin-compatible with the HMU2103NL for direct substitution without PCB redesign.

 

3. Key Parameter Comparison

The table below maps Pulse product page parameters to VOOHU WHS06A01A0 specifications.

Parameter

Pulse HMU2103NL

VOOHU WHS06A01A0

Product Name

HMU2103NL (T=Tape & Reel)

WHS06A01A0

Description

XFMR-CMC,SGL,4.3KVDC,SM,OH NPB

Transformer, BMS Application

Isolation Voltage

4300 VDC @ 60s

4300 VDC 1mA 60s

Safety Insulation

Functional

Functional

Turns Ratio

1CT:1CT (1.00 ±2%)

1CT:1CT ±5%

Temperature Range

-40°C ~ +125°C

-40°C ~ +125°C

RoHS

Yes

Yes (REACH & RoHS Compliant)

Channel / Port Count

Single

Single

Mounting

SMD

SMD

Qualification

AEC-Q200

AEC-Q200 

Pin Count

6 Pin

6 Pin

Dimensions (L×W×H)

7.62 × 9.27 × 5.72 mm

7.60 × 9.35 × 5.65 mm

OCL

150 uH Min, 370 uH Max
@ 100 kHz, 100 mV (-40~+125°C)

150 uH Min @ 100 kHz, 0.1V

DCR (Transformer Side)

0.35 Ω Max

450 mΩ Max (Pin 1-3)

DCR (CM Choke Side)

0.80 Ω Max

850 mΩ Max (Pin 6-4)

Insertion Loss

0.30 dB Max @ 4 MHz

-0.5 dB Max @ 4 MHz ✓Better

Return Loss

20 dB Min @ 4 MHz

-20 dB Min @ 4 MHz

CMR

-35 dB Min @ 1-10 MHz
-20 dB Min @ 10-1000 MHz

-35 dB Min @ 1-100 MHz ✓Better

Working Voltage

1000 VDC (15 years)

1000 VDC

Creepage Distance

> 5 mm

Not specified

MSL

Level 1

Level 1

Package Qty

700 pcs/reel

600 pcs/reel

 

Notes:
① Turns ratio tolerance: VOOHU ±5% vs Pulse ±2% — both meet application requirements; confirm during system tuning.
② CMR: VOOHU guarantees -35 dB Min across 1-100 MHz, better than Pulse (-20 dB Min above 10 MHz).
③ OCL: Pulse specifies both min (150 uH) and max (370 uH); VOOHU specifies min only (150 uH) — lower limits are identical.
④ Creepage distance: not specified in VOOHU datasheet — recommend confirming with VOOHU directly.

 

4. Application Scenarios

AEC-Q200 qualified integrated transformer/CMC modules are widely used in the following automotive applications:

 

  1. EV Battery Management Systems (BMS)

Suitable for EV battery pack management units, providing high-voltage isolation (4300 VDC) between cells and between master/slave control boards, meeting ISO 26262 functional safety requirements. WHS06A01A0 is purpose-designed for BMS applications.

  1. Automotive CAN/LIN Bus Isolation Interfaces

Ideal for ECU-to-ECU CAN bus isolation interfaces, providing functional insulation and common-mode interference rejection to ensure reliable communication in high-EMI vehicle environments.

  1. HEV/EV High-Voltage Systems

Applicable to HEV/EV high-voltage systems for isolating control signals from the high-voltage side. 4300 VDC isolation meets high-voltage safety standards; -40°C to +125°C covers underhood harsh environments.

  1. On-Board Chargers (OBC) and DC-DC Converters

Suitable for isolated feedback and control signal channels in OBCs and DC-DC converters, providing high-reliability functional insulation and EMI suppression.

  1. ADAS and Body Control Modules (BCM)

Applicable to ADAS sensor interfaces and BCMs requiring isolation from EMI. AEC-Q200 qualification ensures lifetime reliability in automotive-grade deployments.

 

5. Frequently Asked Questions (FAQ)

Q1: Is VOOHU WHS06A01A0 AEC-Q200 qualified? Can it be used in mass-production automotive programs?

A: Yes. VOOHU WHS06A01A0 has passed AEC-Q200 qualification and is suitable for automotive mass-production programs. Contact the VOOHU FAE team for qualification reports and detailed test data.

 

Q2: Does the 4300 VDC isolation of VOOHU WHS06A01A0 meet EV high-voltage safety standards?

A: Yes. 4300 VDC functional insulation meets IEC 60664 and mainstream automotive safety standards for BMS isolation layers. The 1000 VDC working voltage is suitable for 800V platform architectures. Safety level classification should be confirmed within your system-level design review.

 

Q3: What is the minimum order quantity (MOQ) and lead time for VOOHU WHS06A01A0?

A: VOOHU WHS06A01A0 is packaged in Tape & Reel at 600 pcs per reel. VOOHU supports sample orders with shipment within 48 hours and delivery within 7 days. For bulk pricing, contact: TEL: +86 400 1048 018, WEB: www.voohuele.com.

 

Why Choose VOOHU?

One-Stop Sourcing: Connectors + Magnetics + Interface ICs — full support from component selection to small-batch production

Custom Solutions: Share your application requirements and budget; receive a tailored solution with dedicated technical support

Fast Development: Direct factory sales, rapid FAE response, efficient sampling — accelerate your time-to-market

Core Certifications: ISO9001, ISO14001, RoHS, REACH — two proprietary factories ensuring on-time delivery and quality

 

Visit us: China: www.voohu.cn  |  Global: www.voohuele.com  |  Technical Support: song.lei@wohu-tek.com

→Download PDF:WHS06A01A0

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