Is there a pin-compatible replacement for BAS20HT1G?

Yes, several parts are potentially pin-compatible replacements. BAS21HT1G is the strongest candidate for a drop-in replacement. Other parts like BAS21H and BAS321 also come in the same SOD-323 package and should be pin-compatible, but you must verify their electrical parameters against your circuit's requirements.

What risks should I check before replacing BAS20HT1G?

Before replacing BAS20HT1G, you should primarily check: 1. Forward Voltage (VF), as a higher value increases power loss. 2. Reverse Recovery Time (trr), to ensure it's fast enough for your switching frequency. 3. Diode Capacitance, which can affect high-frequency performance. 4. Thermal characteristics, especially if the forward voltage is higher.

BAS20HT1G Alternatives, Datasheet & Cross Reference | onsemi

Finding a substitute for the onsemi BAS20HT1G, a 200V, 200mA fast switching diode in a SOD-323 package. This analysis identifies several potential alternatives, including direct upgrade paths and functional equivalents.

AI replacement insight

Electrical risklow

For top candidates like BAS21HT1G, electrical parameters are very close. The main point to check is the slightly different forward voltage.

Package risklow

All viable candidates use the same SOD-323 package, ensuring form and fit compatibility.

Sourcing risklow

The BAS2x series is common, with multiple manufacturers producing compatible parts, offering good sourcing flexibility.

Can it be replaced directly?

Yes, BAS21HT1G from onsemi is a potential drop-in replacement, offering a higher voltage rating in the same package. Other parts like BAS21H are also strong functional alternatives but require datasheet verification as they are from different manufacturers.

Best replacement path

The best alternative is BAS21HT1G, a higher-voltage (250V) variant from the same manufacturer, onsemi. It offers a direct upgrade path with minimal risk.

Main risk

The primary risk when substituting is a mismatch in forward voltage (VF), which can affect power efficiency and thermal performance. A secondary risk is a mismatch in reverse recovery time (trr) for high-speed applications.

Recommended alternatives

Higher voltage (250V) variant from the same manufacturer (onsemi) in the same SOD-323 package.

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Alternative comparison matrix

Feature / factor	BAS20HT1G	BAS21HT1G	BAS21H	BAS321	Compatibility / risk
Package	SOD-323	SOD-323	SOD-323	SOD-323	SOD-323 — Same package and pin count.; BAS21H: Same package and pin count.; BAS321: Same package and pin count.
Voltage	200V	250V	250V	200V	250V / 200V — Higher voltage rating provides more margin.; BAS21H: Higher voltage rating.; BAS321: Voltage rating matches.
Current	0.2A	0.2A	0.2A	0.2A	0.2A — Forward current matches.; BAS21H: Forward current matches.; BAS321: Current rating matches.
Trr	50ns	50ns	50ns	50ns	50ns — Reverse recovery time matches.; BAS21H: Reverse recovery time matches.; BAS321: Reverse recovery time matches.
Vf	1.0V @ 100mA	~1.25V	1.0V	1.25V @ 200mA	~1.25V / 1.0V / 1.25V @ 200mA — Forward voltage is slightly higher, check impact on power dissipation.; BAS21H: Forward voltage appears to match.; BAS321: Forward voltage is slightly higher.

Application & sourcing insights

Questions & answers

The best alternative for BAS20HT1G is BAS21HT1G. It is made by the same manufacturer (onsemi), comes in the same SOD-323 package, and offers a higher voltage rating (250V vs 200V) with otherwise nearly identical specifications.