Is there a pin-compatible replacement for US1B-13-F?

Yes, ES2DA-13-F is a pin-compatible replacement in the same SMA package. It also serves as a performance upgrade.

What risks should I check before replacing US1B-13-F?

You must verify the substitute's reverse recovery time (trr) is 50ns or faster. Also, check the forward voltage (Vf) and its impact on thermal performance and power efficiency.

US1B-13-F Alternatives, Datasheet & Cross Reference | Diodes Incorporated

US1B-13-F is a 100V, 1A ultra-fast rectifier in an SMA package, designed for high-frequency applications. Finding a suitable replacement requires matching its critical 50ns reverse recovery time.

AI replacement insight

Electrical riskhigh

Using a diode with trr > 75ns is a high risk. Standard recovery diodes are incompatible.

Package risklow

The SMA package is standardized, making mechanical replacement straightforward.

Can it be replaced directly?

Yes, ES2DA-13-F from Diodes Inc. is a superior alternative with the same SMA package and better electrical characteristics across the board.

Best replacement path

ES2DA-13-F is a strong upgrade path, offering better voltage (200V), current (2A), and faster switching (≤35ns) in the same package.

Main risk

The main risk when replacing US1B-13-F is using a diode with a slower reverse recovery time (trr), which can cause circuit failure in high-frequency applications.

Recommended alternatives

ES2DA-13-F is an upgrade with higher voltage (200V), higher current (2A), and faster recovery time (≤35ns).

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Alternative comparison matrix

Feature / factor	US1B-13-F	ES2DA-13-F	US1J-13-F	Compatibility / risk
Package	SMA	SMA	SMA	SMA — Same package and pin count ensures form-fit compatibility.; US1J-13-F: Same package ensures form-fit compatibility.
Voltage	100V	200V	600V	200V / 600V — Higher voltage rating provides more design margin.; US1J-13-F: Significantly higher voltage rating.
Current	1.0A	2.0A	-	2.0A — Higher current rating provides more design margin.
Trr	50ns	≤35ns	75ns	≤35ns / 75ns — Faster recovery time is a direct performance upgrade.; US1J-13-F: Slower recovery time may impact high-frequency performance.
Vf	1.0V	0.92V	1.7V	0.92V / 1.7V — Lower forward voltage reduces power dissipation.; US1J-13-F: Significantly higher forward voltage increases power loss.

Application & sourcing insights

Questions & answers

The best alternative is ES2DA-13-F. It is a full upgrade with higher voltage and current ratings, and a faster recovery time in the same SMA package.