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Best Alternatives to B5817WL

Package: SOD-123FLSHIKUESDiodes - Rectifiers - SingleForward Current (IF(AV)): 1 ARepetitive Peak Reverse Voltage (VRRM): 20 VForward Voltage (VF) at 1A: 0.45 VPeak Forward Surge Current (IFSM): 25 AOperating Temperature Range: -55 °C to +125 °C

B5817WL is a 1A, 20V Schottky diode in a SOD-123FL package. Key alternatives include parts with higher voltage or current ratings in the same package, but require checking the forward voltage to ensure efficiency.

AI replacement insight

Electrical risklow

If sticking to Schottky diodes, risk is low. Key parameter is forward voltage (Vf).

Package risklow

Candidates share the same SOD-123FL package, making them form-fit compatible.

Can it be replaced directly?

SS34L is a strong upgrade path, while XBS104S14 is a close functional match. Both are Schottky diodes in the same SOD-123FL package.

Best replacement path

Upgrade to SS34L for higher current (3A) and voltage (40V) ratings, providing more robustness.

Main risk

Using a non-Schottky diode would critically increase forward voltage and power loss. Among Schottky alternatives, minor Vf differences should be checked.

Recommended alternatives

2
SS34L package
SS34L

Taiwan Semiconductor Corporation

Needs validationlow risk

A robust 40V, 3A Schottky diode in the same SOD-123FL package, offering upgraded current and temperature ratings.

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Alternative comparison matrix

Feature / factorB5817WLSS34LXBS104S14Alt 3Compatibility / risk
PackageSOD-123FLSOD-123FLSOD-123FLSOD-123FL — Same package ensures form-fit compatibility.; XBS104S14: Same package ensures form-fit compatibility.
Diode TypeSchottkySchottkySchottkySchottky — Matches target's Schottky type.; XBS104S14: Matches target's Schottky type, ensuring similar switching behavior.
Voltage20V40V40V40V — Higher voltage rating provides more margin.; XBS104S14: Higher voltage rating provides more design margin.
Current1A3A1A3A / 1A — Higher current rating offers a significant upgrade.; XBS104S14: Matches target's current rating.
Forward Voltage0.45V @ 1A~0.5V @ 1A0.54V @ 1A~0.5V @ 1A / 0.54V @ 1A — Vf is comparable at target's operating current.; XBS104S14: Slightly higher Vf may increase power dissipation.
Temperature125°C150°C-150°C — Wider operating temperature range.

Application & sourcing insights

Questions & answers

SS34L is a strong upgrade, offering 3A current and 40V voltage in the same package. XBS104S14 is also a good alternative with a 40V rating but a slightly higher forward voltage.