Is there a pin-compatible replacement for 1N5824?

Several diodes like the SR5100 and 1N5822 use the same DO-201AD package, making them physically compatible. However, electrical differences, especially in forward voltage or current rating, mean they are not always drop-in replacements and require engineering review.

What risks should I check before replacing 1N5824?

Key risks include: 1) Higher forward voltage (Vf) causing increased power loss and heat. 2) Lower forward current (If) or surge current (Ifsm) ratings, which can lead to device failure under load. Always verify these parameters against your application's needs.

1N5824 Alternatives, Datasheet & Cross Reference | FUXINSEMI

Finding a replacement for the 1N5824 5A Schottky diode requires matching its low forward voltage and current ratings. Alternatives exist but may involve trade-offs in efficiency or current handling that require careful engineering review.

AI replacement insight

Electrical riskmedium

Substitutes may have higher forward voltage, increasing power loss.

Package risklow

Candidates share the common DO-201AD package.

Can it be replaced directly?

No exact drop-in replacement was found. The SR5100 is functionally similar but has a higher forward voltage, which impacts efficiency and thermal performance.

Best replacement path

The SR5100 is the most promising path, as it matches the 5A current rating, but requires thermal re-evaluation due to higher forward voltage.

Main risk

The main risk when substituting the 1N5824 is using a part with a lower current rating or a higher forward voltage (Vf), which increases power loss and heat.

Recommended alternatives

A functional alternative in the same package with matched current ratings but higher forward voltage.

View details

Alternative comparison matrix

Feature / factor	1N5824	SR5100	1N5822	Compatibility / risk
Package	DO-201AD	DO-201AD	DO-201AD	DO-201AD — Same package ensures form and fit compatibility.; 1N5822: Same package ensures form and fit compatibility.
Voltage	30V	100V	40V	100V / 40V — Higher reverse voltage provides more design margin.; 1N5822: Higher reverse voltage provides more margin.
Current	5A	5A	3A	5A / 3A — Forward current rating matches the target.; 1N5822: Lower forward current rating is a major downgrade.
Forward Voltage	0.55V @ 5A	0.85V @ 5A	-	0.85V @ 5A — Higher Vf will increase power dissipation and heat.
Surge Current	150A	150A	80A	150A / 80A — Peak forward surge current matches the target.; 1N5822: Lower surge capability is a significant risk.
Temperature	-55°C to +150°C	-	-65°C to +125°C	-65°C to +125°C — Lower maximum operating temperature.

Application & sourcing insights

Questions & answers

The SR5100 is a strong candidate, matching the 5A current rating and DO-201AD package, but has a higher forward voltage. For lower current needs, the 1N5822 (3A) is a common but downgraded option.