WHSH16F01D4 10/100BASE-TX LAN Transformer

The datasheet gives two alternative conditions: 4000 VAC held for 60 s, or 4800 VAC held for 1 s. The leakage criterion is 1 mA in both cases.

The site field quotes the higher number, but that figure belongs to the 1 s condition and cannot be compared directly against the standard 1500 VAC for 60 s. Match whichever the system's safety documentation states: a 60 s clause maps to the 4000 VAC figure, a 1 s clause to the 4800 VAC figure. The WHSH16F01D4 is the highest isolation grade in the 10/100 BASE-T range.

No. The datasheet wording is a component-level design statement — designed to comply with IEC 60601-1 and IEC 60950-1, supplementary insulation at a working voltage of 250 Vrms — not an equipment-level certification.

Medical electrical equipment is certified as a whole; the transformer is one element in the insulation coordination, and what governs is the equipment's insulation diagram, its creepage and clearance allocation and its test reports. Where a medical project needs documentation, request the WHSH16F01D4 test and compliance files from VOOHU and have the equipment's safety engineer confirm the assumption holds.

Because the insulation distance is bought with physical separation, and that separation raises leakage inductance and coupling loss at the same time.

The datasheet states 7 mm clearance and 10 mm creepage; insertion loss is correspondingly -3.0 dB Max from 1–100 MHz and return loss starts at -10 dB across four bands, against -1.1 dB and -18 dB on the standard parts. This is the cost of the insulation grade, not a defect — the WHSH16F01D4 suits designs where insulation outranks link margin. A design already tight on link budget has to recompute with these figures. Standard-loss options are in the 10/100 BASE-T range.

No — both are 16-pin surface-mount, but the packages are not comparable.

The WHSH16F01D4 body measures 24.15 × 15.50 mm against 12.80 × 6.90 mm on the standard parts, and its terminal pitch is 2.54 mm rather than 1.27 mm. Board area is therefore roughly four times larger and the pitch is doubled, so the land pattern has to be redrawn. Choosing it is a layout-stage decision, not something a later substitution can absorb, and the 12.80 mm height has to be checked against the enclosure. Standard-size options are in the 10/100 BASE-T range.