Lan Transformer: VOOHU WHS16002GA as Replacement for Bourns SM91074AL
1. Competitor Product Overview (Bourns)
The Bourns SM91074AL is a 10/100 Base-T single-port low-profile SMD Ethernet transformer module in a 16-pin package, compliant with IEEE 802.3u (100 Base-T), AEC-Q200 automotive-grade qualified, RoHS compliant and halogen free. It operates over -40°C to +125°C, is rated MSL 1, with a peak reflow temperature of 245-250°C, and ships in Tape & Reel at 600 pcs per reel. It is widely used in industrial and automotive Fast Ethernet interfaces.
2. VOOHU Replacement Product (Su Zhou Voohu Electronic Tech. Co., Ltd.)
VOOHU WHS16002GA is the ideal drop-in replacement offering equivalent functionality with superior cost-effectiveness and supply stability. It is a 10/100 BASE-TX single-port low-profile SMD transformer module in a fully pin-compatible 16-pin package (pinout identical to the SM91074AL), with the same circuit topology (1CT:1CT dual winding), the same -40°C to +125°C operating range, AEC-Q200 tested, IEEE 802.3 compliant and RoHS compliant — allowing direct substitution for the Bourns SM91074AL with no PCB redesign.
3. Key Parameter Comparison
The table below maps the Bourns datasheet parameters to the corresponding VOOHU WHS16002GA specifications.
|
Parameter |
Bourns SM91074AL |
VOOHU WHS16002GA |
|
Product Name |
SM91074AL |
WHS16002GA |
|
Description |
10/100 Base-T Ethernet Transformer (SMD) |
10/100 BASE-TX Ethernet Transformer (SMD) |
|
Data Rate |
10/100 BASE-T |
10/100 BASE-TX |
|
Standard |
IEEE 802.3u (100 Base-T) |
IEEE 802.3 |
|
OCL |
350 µH Min @ 100 kHz, 0.1 V, 8 mA DC Bias |
350 µH Min @ 100 kHz, 0.1 V, 8 mA DC Bias |
|
Leakage Inductance |
0.5 µH Max @ 100 kHz, 0.1 V |
0.5 µH Max @ 100 kHz, 0.1 V |
|
Turns Ratio |
1:1 (±2%) |
1CT:1CT (±5%) |
|
DCR |
TD&RD: 1.0 Ω Max |
Sec: 1.0 Ω Max |
|
Insertion Loss |
-1.1 dB Max @ 1-100 MHz |
-1.1 dB Max @ 1-100 MHz |
|
Cross Talk |
-40 dB Min @ 1-60 MHz |
-40 dB Min @ 1-60 MHz |
|
Common Mode Rejection |
-37 dB Min @ 1-60 MHz |
-37 dB Min @ 1-60 MHz |
|
Hipot |
1500 Vrms & 2250 VDC @ 1 mA, 60 s |
1500 VAC @ 1 mA, 60 s |
|
Operating Temperature |
-40°C ~ +125°C |
-40°C ~ +125°C |
|
RoHS |
Yes (Halogen Free) |
Yes |
|
Certification |
AEC-Q200 Compliant |
AEC-Q200 Tested |
|
Pin Count |
16 Pin |
16 Pin |
|
Mounting |
SMD |
SMD |
|
Channel / Port Count |
Single port (TX + RX dual winding) |
Single port (TX + RX dual winding) |
|
Dimensions (L×W×H) |
12.80 × 9.50 × 5.65 mm |
12.80 × 9.50 × 5.65 mm |
|
Package Qty |
600 pcs/reel (Tape & Reel) |
600 pcs/reel (Tape & Reel) |
Notes:
- Turns-ratio tolerance is ±2% (Bourns) vs ±5% (VOOHU); both are adequate for 10/100BASE-T — bench validation recommended where ratio accuracy is critical.
② Both parts share identical package dimensions, pinout and circuit topology, are AEC-Q200 automotive-grade, and operate over -40°C to +125°C, enabling true pin-for-pin replacement.
③ Crosstalk and CMR specifications are identical.
4. Application Scenarios
10/100 BASE-T (Fast Ethernet) single-port low-profile transformer modules are widely used in:
- Industrial Ethernet Switches and Gateways
Suitable for industrial Ethernet switches, edge gateways, SCADA and fieldbus equipment. The -40°C to +125°C range covers harsh factory environments; 1500 VAC isolation ensures safety.
- Automotive Ethernet and Automotive Electronics
Both parts are AEC-Q200 automotive-grade, suitable for 10/100 Ethernet interfaces in automotive gateways, body controllers, infotainment and ADAS domain controllers.
- Embedded and IoT Devices
The low-profile 16-pin package enables high-density board integration, ideal for industrial controllers, PLCs, IoT gateways and smart meters where space and cost matter.
- Networking and Access Equipment
Suitable for routers, switches, IP cameras, POS terminals and network interface cards (NIC) requiring 10/100 Ethernet PHY isolation.
- High-Reliability and Surveillance Systems
Wide-temperature, automotive-grade reliability makes it suitable for security/surveillance, building automation, medical and high-reliability industrial communications.
5. Frequently Asked Questions (FAQ)
Q1: Is VOOHU WHS16002GA fully pin-compatible with Bourns SM91074AL? Can it be replaced without a PCB change?
A: Yes. Both use a 16-pin low-profile SMD package with 1.27 mm pitch and an identical pinout (TD+/TCT/TD-, RD+/RCT/RD-, TX±/RX± and CMT center-tap positions match) and the same 1CT:1CT dual-winding topology. WHS16002GA is a direct drop-in with no PCB redesign.
Q2: Is WHS16002GA an automotive-grade part?
A: Yes. WHS16002GA is AEC-Q200 tested and rated -40°C to +125°C — the same automotive-grade, wide-temperature class as the Bourns SM91074AL — suitable for automotive electronics and high-reliability industrial applications.
Q3: What is the minimum order quantity (MOQ) and lead time for WHS16002GA?
A: WHS16002GA is packaged in Tape & Reel at 600 pcs per reel. 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:WHS16002GA
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