Is there a pin-compatible replacement for E1J?

While several diodes like FR107W share the same SOD-123FL package and pinout, their electrical performance, specifically the reverse recovery time (trr), is not compatible for high-speed applications. They are not true pin-compatible replacements.

What risks should I check before replacing E1J?

The most critical risk is the reverse recovery time (trr). Replacing the 35ns E1J with a slower diode (e.g., 500ns) can lead to increased power loss, overheating, and potential circuit malfunction, especially in power supplies or inverters.

E1J Alternatives, Datasheet & Cross Reference | GOODWORK

GOODWORK E1J is a 600V, 1A super-fast recovery diode with a 35ns trr, designed for high-speed switching. Finding a replacement requires careful matching of the reverse recovery time to avoid circuit failure.

AI replacement insight

Electrical riskhigh

trr mismatch from 35ns to 500ns can cause excessive power loss and circuit malfunction in high-speed switching.

Package risklow

Candidates share the same SOD-123FL package, ensuring physical compatibility.

Can it be replaced directly?

No direct replacements with matching super-fast recovery time (trr ≤ 35ns) were found. Alternatives like FR107W are significantly slower and require review.

Best replacement path

Search for other 'super fast' or 'ultra fast' rectifiers in a SOD-123FL package with Vr ≥ 600V, If ≥ 1A, and trr ≤ 35ns.

Main risk

The primary risk is substituting a slower diode, which can cause circuit failure or overheating in high-frequency applications.

Recommended alternatives

A 1A, 1000V fast recovery diode in a SOD-123FL package, but with a significantly slower recovery time than the target.

View details

Alternative comparison matrix

Feature / factor	E1J	F7	FR107	FR107W	Compatibility / risk
Package	SOD-123FL	SOD-123FL	-	-	SOD-123FL — Package matches.
Voltage	600V	1000V	-	-	1000V — Higher voltage rating provides more margin.
Current	1.0A	1.0A	-	-	1.0A — Forward current matches.
Trr	35ns	500ns	-	-	500ns — Significantly slower recovery time. Not for high-speed use.
Vf	1.7V	-	-	1.3V	—

Application & sourcing insights

Questions & answers

Currently, no direct drop-in alternative with a comparable 35ns recovery time has been identified. Parts like Yint's FR107W match the package and basic ratings but are much slower (500ns trr) and require careful engineering review.