Lan Transformer： VOOHU WHSG24301G as Replacement for Pulse H5120NL
1. Competitor Product Overview (Pulse Electronics / YAGEO)
Pulse Electronics (a YAGEO company) H5120NL (Tape & Reel: H5120NLT) is a 1000BASE-T single-port (4-channel integrated) low-profile SMD Ethernet transformer module in a 24-pin package, compliant with IEEE 802.3, RoHS compliant, JEDEC moisture sensitivity Level 1, with a peak reflow temperature of 245°C. It operates over 0°C to +70°C (commercial grade), with a 1CT:1CT (1:1 ±2%) turns ratio and 1500 Vrms input-to-output isolation, designed for space-constrained Gigabit Ethernet interfaces (height only 2.08 mm Max).
2. VOOHU Replacement Product (Su Zhou Voohu Electronic Tech. Co., Ltd.)
VOOHU WHSG24301G is the ideal drop-in replacement offering equivalent functionality with superior cost-effectiveness and supply stability. It is a 100/1000 BASE-T single-port (4-channel integrated) low-profile SMD transformer module in a fully pin-compatible 24-pin package (pinout identical to the H5120NL, with matching 4-channel TD±/TDCT and TX±/TXCT positions), with the same circuit topology (1CT:1CT × 4 channels) and the same 0°C to +70°C operating range — allowing direct substitution for the Pulse H5120NL with no PCB redesign.
3. Key Parameter Comparison
The table below maps the Pulse datasheet / product-page parameters to the corresponding VOOHU WHSG24301G specifications.
|
Parameter |
Pulse H5120NL |
VOOHU WHSG24301G |
|
Product Name |
H5120NL (T = Tape & Reel) |
WHSG24301G |
|
Description |
MDL, SIN, 1GD, 1:1, SMT |
100/1000 BASE-T, SMD |
|
Data Rate |
1000 BASE-T |
100/1000 BASE-T |
|
OCL |
350 µH Min @ 100 kHz, 100 mVRMS, 8 mA DC Bias |
350 µH Min @ 100 kHz, 0.1 V |
|
Leakage Inductance |
Not specified |
0.5 µH Max @ 100 kHz, 0.1 V |
|
Turns Ratio |
1CT:1CT (1:1 ±2%) |
1CT:1CT (±5%) |
|
DCR |
0.65 Ω Max (1/2 winding) |
1.4 Ω Max (1400 mΩ) |
|
Insertion Loss |
-1.2 dB Max @ 100 kHz |
-1.1 dB Max @ 1-100 MHz |
|
Hipot |
1500 Vrms Min @ 60 s |
1500 VAC @ 1 mA, 60 s |
|
Operating Temperature |
0°C ~ +70°C |
0°C ~ +70°C |
|
Storage Temperature |
-20°C ~ +125°C |
-25°C ~ +125°C |
|
Pin Count |
24 Pin |
24 Pin |
|
Mounting |
SMD (low profile) |
SMD (low profile) |
|
Channel / Port Count |
Single (1 port / 4 channels integrated) |
Single (1 port / 4 channels integrated) |
|
Dimensions (L×W×H) |
16.51 × 9.65 × 2.08 mm Max |
16.50 × 9.55 × 2.50 mm Max |
|
Package Qty |
Not specified |
1500 pcs/reel (Tape & Reel) |
Notes: ① Both parts operate over 0°C to +70°C (commercial grade), share an identical pinout, footprint and circuit topology (1CT:1CT × 4 channels) in a low-profile 24-pin package, enabling true pin-for-pin replacement. ② Turns-ratio tolerance is ±2% (Pulse) vs ±5% (VOOHU). ③ DCR is specified on a different basis: Pulse states 0.65 Ω Max per half-winding (1/2 winding), VOOHU states 1.4 Ω Max total — not directly comparable; bench measurement is recommended.
4. Application Scenarios
1000BASE-T (Gigabit Ethernet) single-port quad-channel low-profile SMD transformer modules are widely used in:
- Gigabit Ethernet Switches and Routers
Suitable for enterprise-grade Gigabit switches and routers. Single-port quad-channel integration reduces PCB footprint; the low-profile package (height < 3 mm) meets thin-device space requirements.
- Server Motherboards and Network Interface Cards (NIC)
Ideal for server motherboards and Gigabit NICs; pin and package compatibility allows direct substitution of the Pulse design.
- Networking and Access Equipment
Suitable for routers, fiber/DSL access devices and small-cell backhaul modules; supports 100/1000 BASE-T dual-speed auto-negotiation, with low-profile packaging for high-density integration.
- Industrial Ethernet and Edge Computing Gateways
Suitable for industrial switches and edge gateways; 1500 V isolation ensures safety. For a wider range (-40°C to +85°C), VOOHU also offers wide-temperature series.
- Consumer Electronics and Surveillance Equipment
Suitable for set-top boxes, IP network cameras, NVR/DVR and height-constrained consumer/security electronics with a Gigabit Ethernet port.
5. Frequently Asked Questions (FAQ)
Q1: Is VOOHU WHSG24301G fully pin-compatible with Pulse H5120NL? Can it be replaced without a PCB change?
A: Yes. Both use a 24-pin low-profile SMD package with 1.27 mm pin pitch and 13.97 mm pin span, with an identical 4-channel pinout (matching TD±/TDCT and TX±/TXCT positions) and the same per-channel 1CT:1CT topology. WHSG24301G is a direct drop-in with no PCB redesign; only verify enclosure height clearance (Pulse 2.08 mm vs VOOHU 2.50 mm).
Q2: Do both parts share the same temperature grade?
A: Yes. Both operate over 0°C to +70°C (commercial grade), suitable for standard indoor networking and consumer/industrial Ethernet equipment. If a wider range is required (-40°C to +85°C or wider), VOOHU also offers wide-temperature series.
Q3: What is the minimum order quantity (MOQ) and lead time for WHSG24301G?
A: WHSG24301G is packaged in Tape & Reel at 1,500 pcs per reel (3,000 pcs per inner carton, 6,000 pcs per export carton) — a high-volume pack suitable for mass production. VOOHU supports sample orders shipped within 48 hours and delivered 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:WHSG24301G
