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VOOHU SPE single-pair Ethernet connector selection: plug-in board socket, press-fit plug and PoDL wiring harness verification

VOOHU SPE single-pair Ethernet connector selection: plug-in board socket, press-fit plug and PoDL wiring harness verification

Focusing on the WHSPE00467 board-end socket and WHSPE00468 crimp plug, the mating, crimping, differential channel, PoDL power supply and mass production wiring harness verification of the SPE connection system are explained.

VOOHUPoE integrated magnetic RJ45 selection: supply current, temperature rise path and multi-port verification

VOOHUPoE integrated magnetic RJ45 selection: supply current, temperature rise path and multi-port verification

Starting from the 350mA/600mA public screening field, the current definition, temperature rise path, multi-port thermal coupling and mass production verification method of PoE integrated magnetic RJ45 are explained.

VOOHUSFP connector contact and soldering reliability: board-level troubleshooting and verification of intermittent links

VOOHUSFP connector contact and soldering reliability: board-level troubleshooting and verification of intermittent links

Starting from module cross-testing, terminal contact, SMD solder joints, mechanical positioning and high-speed channels, the board-level inspection and mass production verification process of SFP intermittent links are established.

VOOHU Gigabit Network Transformer Packaging Migration: DIP to SMD, Pin Mapping and Mass Production Verification

VOOHU Gigabit Network Transformer Packaging Migration: DIP to SMD, Pin Mapping and Mass Production Verification

Starting from the network-by-network pin mapping, PCB library, isolation boundary and assembly process, the candidate screening, trial production and mass production verification methods when gigabit network transformers are migrated from DIP to SMD are explained.

Audio Transformer: VOOHU WHTT6010 Replacement for Tamura TTC-5023 Comparison Report

Audio Transformer: VOOHU WHTT6010 Replacement for Tamura TTC-5023 Comparison Report

Compare VOOHU WHTT6010 and Tamura TTC-5023 for winding connections, DCR, primary inductance, insertion loss, return loss, and dielectric test conditions, with verification points for 600-ohm voice and modem lines.

VOOHU gigabit network transformer test and acceptance: VNA fixture, return loss and common mode suppression verification

VOOHU gigabit network transformer test and acceptance: VNA fixture, return loss and common mode suppression verification

Starting from the reference plane, mixed-mode port and fixture calibration, explain how to test the return loss, insertion loss and common mode characteristics of the Gigabit network transformer, and verify the link, PoE, temperature and insulation in a closed loop.

VOOHU switching power supply current transformer selection: turns ratio, load resistance and overcurrent protection verification

VOOHU switching power supply current transformer selection: turns ratio, load resistance and overcurrent protection verification

Starting from the controller threshold and target peak current, explain how to select the turns ratio, load resistance and reset network of the switching power supply current transformer, and complete the overcurrent protection verification.

Audio transformer: VOOHU WHTT4001 replaces HanRun HR228434 comparison report

Audio transformer: VOOHU WHTT4001 replaces HanRun HR228434 comparison report

1:1, 600 Ω audio transformer parameter comparison between VOOHU WHTT4001 and HanRun HR228434, covering shunt inductance, DCR, insertion loss, return loss and packaging verification.

VOOHURJ45 mechanical structure selection: 1×2, 2×1, low height and sinking plate interface assembly verification

VOOHURJ45 mechanical structure selection: 1×2, 2×1, low height and sinking plate interface assembly verification

Starting from the panel-connector-PCB-chassis tolerance chain, explain how to check the opening direction, shielding shrapnel, LED and assembly boundaries of 1×2, 2×1, low-height and sinker RJ45.

Audio transformer: VOOHU WHTT6010 replaces Bourns SM-LP-5001 comparison report

Audio transformer: VOOHU WHTT6010 replaces Bourns SM-LP-5001 comparison report

Comparison between VOOHU WHTT6010 and Bourns SM-LP-5001 audio transformers, covering key parameters such as turns ratio, DC resistance, insertion loss, return loss, and package size.

VOOHU Chip LAN chip network transformer selection: PHY matching, PoE bias and reflow soldering verification

VOOHU Chip LAN chip network transformer selection: PHY matching, PoE bias and reflow soldering verification

Starting from the circuit boundaries of X'fmr+CMC and Cap+CMC, it explains how to check PHY matching, PoE bias, PCB layout and reflow soldering first-piece verification of Chip LAN chip network transformer.

VOOHUSFP+ and SFP28 light cage selection: Board-level verification of Press-Fit holes, tolerances, and light guide and heat dissipation

VOOHUSFP+ and SFP28 light cage selection: Board-level verification of Press-Fit holes, tolerances, and light guide and heat dissipation

Starting from the public on-shelf material numbers of SFP+ and SFP28 optical cages, we sort out the board-level verification boundaries of Press-Fit holes and tooling, light guide configurations, heat dissipation holes, and chassis assembly.

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