Compiled from both manufacturers' published datasheets. Verify with samples and the PCB footprint before production.
1. Competitor Product Overview (Pulse Electronics / YAGEO)
Pulse Electronics (a YAGEO Company) HX1188NL (Tape & Reel: HX1188NLT) is a high-performance 100BASE-TX single-port SMD transformer module in a 16-pin package, IEEE 802.3 compliant, J-STD-020 Level 1 (no moisture sensitivity), peak reflow 245°C, RoHS compliant, with an operating temperature of -40°C to +85°C. It features a DAP (Diallyl Phthalate) housing with UL 94V-0 flammability rating and is widely used in 100 Mbps Ethernet interface designs.
#2. VOOHU Replacement Product (Suzhou VOOHU Electronic Technology Co., Ltd.)
VOOHU WHS16037T G is a replacement candidate for the Pulse HX1188NL, with comparable core specifications. It is a 10/100BASE-TX single-port SMD transformer module in a pin-compatible 16-pin package, with an identical schematic topology (1CT:1CT, TX/RX dual channel), operating from -40°C to +85°C. Verify with samples before production.
#3. Key Parameter Comparison
The table below maps Pulse product page parameters to VOOHU WHS16037T G specifications. Yellow-highlighted cells indicate notable differences.
Notes:
① Insertion loss: VOOHU -1.1 dB vs Pulse -1.0 dB (1-100 MHz) — only 0.1 dB difference, within IEEE 802.3 limits.
② Return loss: both meet 100BASE-TX standard; presentation differs (Pulse uses formula, VOOHU uses per-band fixed values).
③ Crosstalk: Pulse specifies strict low-frequency value (-62 dB @ 1 MHz); VOOHU provides a unified guaranteed minimum (-30 dB). Performance at actual 100BASE-TX operating frequencies (4-80 MHz) is comparable — bench validation recommended.
④ Turns ratio tolerance: VOOHU ±5% vs Pulse ±2%; both meet application requirements.
#4. Application Scenarios
100BASE-TX single-port transformer modules are widely used in the following applications:
- 1.Ethernet PHY Interface Isolation
Used between the PHY chip and RJ45 connector for signal isolation and impedance matching. WHS16037T G is compatible with mainstream 100M PHY chips.
- 1.Industrial Automation and Fieldbus Devices
Suitable for Industrial Ethernet devices such as industrial controllers, field devices, and PROFINET interface cards; the wide operating temperature range (-40°C to +85°C) meets industrial-grade requirements, while 1500 VAC isolation ensures circuit safety.
- 1.IP Cameras and Video Surveillance
Ideal for IP cameras and video encoders. Low insertion loss ensures stable 100 Mbps video stream transmission.
- 1.Medical Electronics and Precision Instruments
Suitable for Ethernet interfaces in medical devices and precision instruments (1500 VAC isolation); check the isolation your safety standard requires.
- 1.Embedded Boards and Industrial PCs
Ideal for industrial motherboards, embedded systems, and Mini-ITX designs. The compact 16-pin SMD package enables high-density PCB layouts and reduces BOM cost.
#5. Frequently Asked Questions (FAQ)
Is VOOHU WHS16037T G pin-compatible with Pulse HX1188NL?
Both products use a 16-pin SMD package with 1.27 mm pitch and identical pin assignments (TD+/CT/TD-/RD+/CT/RD-). VOOHU WHS16037T G is a replacement candidate; verify with samples before production.
VOOHU's crosstalk spec (-30 dB) is much lower than Pulse (-62 dB @ 1 MHz). Will this affect real-world performance?
The Pulse -62 dB figure applies at 1 MHz (very low frequency) and is expressed via a frequency-dependent formula. In the actual 100BASE-TX operating band (10-80 MHz), performance between the two products is comparable. VOOHU provides a flat guaranteed minimum of -30 dB across 1-100 MHz. Bench validation on the target board is recommended.
Does VOOHU WHS16037T G support speeds other than 100BASE-TX?
Yes. VOOHU WHS16037T G is rated for 10/100BASE-TX, meaning it is backward compatible with 10BASE-T. This makes it suitable for products with Auto-Negotiation (10/100 Mbps), providing broader application coverage than the Pulse HX1188NL.
Is VOOHU WHS16037T G RoHS compliant?
Yes. VOOHU WHS16037T G is fully RoHS compliant, free of lead, mercury, cadmium, and other restricted substances, meeting EU and major market environmental regulations. It supports lead-free reflow, compatible with standard SMT production lines.
Are samples available for evaluation?
Samples are available for evaluation, and selected parts are free of charge. Our FAE team will be glad to confirm the options for your project. They can also help check the footprint and pin 1 orientation on your board. To request samples, use our request form.
#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:Magnetics and connectors direct from the manufacturer, rapid FAE response, efficient sampling — accelerate your time-to-market
Core Qualifications:ISO 9001 and ISO 14001 certified; RoHS and REACH compliant (third-party test reports); own factories in Mianyang (magnetics) and Dongguan (connectors)
Visit us: China: www.voohu.cn | Global:www.voohuele.com | Our FAE team can suggest suitable parts and help check the design: Request samples
Need a quote, samples or selection support?
Part number WHS16037TG is filled in for you. Add the quantity and lead time and submit. Our FAE team will be glad to confirm the options for your project.
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