How to Choose a Quad-Port Gigabit LAN Transformer: 72-, 88- and 96-Pin Footprints, PoE and Temperature
Compare four VOOHU quad-port Gigabit LAN transformers by 72-, 88- and 96-pin footprints, pitch, PoE capability and operating temperature.
ALL ARTICLES
All articles
Selection guides, cross-reference reviews and engineering Q&A for LAN transformers, RJ45, SFP and other communication components, plus the latest from VOOHU.
All articlesPage 5
261 articles
SFP Port Drops During ESD Testing: Cage Grounding, Bezel Bonding and Protection Selection
A practical way to separate SFP link drops, module loss and board resets during ESD testing, then improve the cage, bezel, return path and protection design.
How to Test a Push-Pull Transformer: Center-Tap Inductance, Turns Ratio, DCR and Hi-Pot Checks
A practical sequence for checking a push-pull transformer's center tap, inductance, turns ratio, DCR, insulation and initial board operation, with three VOOHU p
How to Choose a LAN Transformer (Part 1): Understanding Its Internal Structure
Understand differential pairs, pairsets and ports, then select a VOOHU LAN Transformer by data rate, port count and PoE current rating.
Low Pulse Amplitude Across a BMS Isolation Transformer: Checking 150–300 μH OCL, 1:1 Turns Ratio and Termination
A four-point waveform method for diagnosing low BMS isolation-transformer pulse amplitude through OCL, 1:1 turns ratio, termination, and probing.
How to Wire an Audio Transformer: Primary, Secondary and Polarity Dots
A practical guide to audio-transformer winding identification, polarity, 180-degree inversion, stereo checks, PCB marking and VOOHU product selection.
Push-Pull Transformer Output Voltage Too Low? Turns Ratio and Headroom for 3.3 V to 5 V Supplies
Locate load-related voltage drops and compare three VOOHU push-pull transformers using minimum input voltage, turns ratio and LDO headroom.
How to Reduce Planar Transformer Temperature Rise: Copper, Core and 60–120 W Selection
Separate winding, core and external heat, then select among four VOOHU 24 V planar transformers from 60 W to 120 W.
How to Choose a Dual-Port LAN Transformer: 48/50 Pins, DIP/SMT and Concurrent PoE Validation
Select dual-port Gigabit LAN magnetics by pin count, mounting, PoE and temperature, then validate both ports concurrently.
Push-Pull Transformer Selection Comparison: VOOHU WHST06Q02E0 vs. Würth Elektronik 750316819
VOOHU WHST06Q02E0 is a 1CT:2.88CT, six-pin SMT push-pull transformer with 86 µH open-circuit inductance, 2500 VAC isolation test voltage, and a −40°C to +125°C
BMS Isolation Transformer Selection Comparison: VOOHU WHST06Y01A0 vs. Pulse HM1238NLT
VOOHU WHST06Y01A0 is a six-pin SMT isolation transformer for BMS applications. Its 1CT:1CT winding arrangement, 300 µH-class open-circuit inductance, and high-v
Do Ethernet Couplers Reduce Speed? Why Gigabit Drops to 100 Mb/s and How to Check
Diagnose speed drops after an Ethernet cable extension and choose VOOHU Cat6 couplers by cable entry, shielding and panel configuration.
SUBSCRIBE
Subscribe to VOOHU technical articles
Get new articles in your inbox. Unsubscribe at any time.
You are subscribed
Need a quote, samples or selection support?
Send us part numbers and quantities, or your interface, speed and package requirements. We will quote, and our FAE team can suggest suitable parts and help check the design.
Phone+86 133 5804 1040
Scan with your phone to chat on WhatsAppMon–Fri 8:30–18:00 (UTC+8)Emailvoohu@voohuele.com
Before you order: samples, MOQ, lead time and import duties in our ordering guide →Scan with your phone to chat on WhatsAppMon–Fri 8:30–18:00 (UTC+8)Emailvoohu@voohuele.com
