Is there a pin-compatible replacement for BAS70-04,215?

Several parts like MMBD4148SE share the SOT23 package and series pinout, but they are not functionally identical. They are standard diodes, not Schottky diodes, leading to different electrical performance, especially higher forward voltage.

What risks should I check before replacing BAS70-04,215?

The main risk is the diode technology. The BAS70-04 is a Schottky diode with low forward voltage (Vf). Most alternatives are standard diodes with a higher Vf. This can impact circuit efficiency, voltage levels, and switching performance. Always test in your application.

BAS70-04,215 Alternatives, Datasheet & Cross Reference | Nexperia USA Inc.

BAS70-04,215 is a 70V, 70mA dual series Schottky diode in a SOT23 package, used for high-speed switching. Finding a direct replacement requires matching the low forward voltage characteristic of a Schottky diode.

AI replacement insight

Electrical riskhigh

Diode technology mismatch (Standard vs. Schottky) causes high forward voltage, impacting performance.

Package risklow

Candidates share the same SOT23 package and series configuration.

Can it be replaced directly?

No direct, verified drop-in replacement has been identified. All candidates found are standard diodes, not Schottky, which is a critical functional difference.

Best replacement path

Search for another dual series Schottky diode in a SOT23 package with Vr >= 70V and Io >= 70mA.

Main risk

The primary risk is substituting a standard diode for a Schottky diode, leading to significantly higher forward voltage and potential circuit malfunction.

Recommended alternatives

A functional alternative with the same package but different diode technology, resulting in higher forward voltage.

View details

Alternative comparison matrix

Feature / factor	BAS70-04,215	BAV199,215	LBAV99LT1G	MMBD4148SE	Compatibility / risk
Package	SOT23	SOT23	-	-	SOT-23 — Package matches.
Pinout	1 Pair Series	1 Pair Series	-	-	1 Pair Series — Configuration matches.
Technology	Schottky	Standard	-	-	Standard — Candidate is a standard diode, not a Schottky.
Voltage	70V	75V	-	-	75V — Higher voltage rating is acceptable.
Current	70mA	160mA	-	-	215mA — Higher current rating.

Application & sourcing insights

Questions & answers

Finding a direct replacement is challenging. Alternatives like MMBD4148SE have a similar package but are standard diodes with higher forward voltage, which may not work in all circuits. Always verify the forward voltage (Vf) requirement.