ProjectsPricingInsights

Best Alternatives to B1601S

Package: SMDCND-tekPulse TransformersTurns Ratio: 1CT:1CT (TX), 1CT:1CT (RX)OCL: 350 µH Min. @ 100 KHz, 100mV, 8mA DC BiasIsolation Voltage: 1500 VrmsDCR: 1.20 Ω Max.Insertion Loss: -1.1 dB Max. @ 1-100MHz

B1601S is a 16-pin SMD 10/100Base-TX Ethernet transformer. Several candidates are close, but pinout review is required.

AI replacement insight

Electrical riskmedium

OCL/ratio match, but details need review.

Package riskmedium

SMD 16-pin only; footprint missing.

Firmware risklow

Passive LAN magnetics.

Sourcing risklow

Kept candidates are catalog matched.

Can it be replaced directly?

Direct replacement for B1601S should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

Start with B1603S, then verify pin functions, footprint, and LAN magnetics limits.

Main risk

Pinout and footprint are not confirmed.

Recommended alternatives

3
B1603S package
B1603S

CND TEK

Needs validationmedium risk

B1603S is a close same-series LAN transformer candidate for B1601S.

View details

Alternative comparison matrix

Feature / factorB1601SB1603SB1608SHX1188NLTCompatibility / risk
PackageSMDSMD--SMD — mounting matches
Pinout16 pins16 pins--16 pins — pin functions missing
Interface10/100Base-TX10/100M LAN--10/100M PoE+ — PoE+ variant
Temperature0 to 70C0 to 70C---40 to 85C — wider range
LifecycleActiveActive--Active — both active
Currentnot stated-720mA PoE+-720mA PoE+ — target need unknown
Resistance1.20ohm max--1.50ohm max—

Application & sourcing insights

Questions & answers

Verified drop-in options for B1601S are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.