onsemi BAS4 Series

4 variants · onsemiAll Discrete Semiconductors →

About the onsemi BAS4 Series

The onsemi BAS4 Series series groups 4 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common mounting of Surface Mount, speed of Small Signal =< 200mA (Io), Any Speed and technology of Schottky. Variants differ by capacitance @ vr,, case and current - average rectified, so you can match the exact capacitance @ vr, your application requires using the selection guide below. The range mixes active and legacy part numbers, so you can source both current onsemi BAS4 Series variants and discontinued ones from a single page.

Select a variant by

Capacitance @ vr,: 5pF @ 0V, 1MHz · 5pF @ 1V, 1MHz
Case: SOD-923 · TO-236-3, SC-59, SOT-23-3
Current - average rectified: 100mA · 120mA
Current - reverse leakage @ vr: 1 µA @ 25 V · 200 nA @ 30 V
Package: Tape & Reel (TR) · Tape & Reel (TR) Cut Tape (CT)

Shared specifications

Mounting: Surface Mount
Speed: Small Signal =< 200mA (Io), Any Speed
Technology: Schottky
Voltage - DC reverse (Vr): 40 V
Voltage - forward (Vf) (Max) @ if: 1 V @ 40 mA

Variant comparison

Parameter	BAS40LT1G	BAS40LT1	BAS40LT3G	BAS40SL
Capacitance @ vr,	5pF @ 1V, 1MHz	5pF @ 1V, 1MHz	5pF @ 1V, 1MHz	5pF @ 0V, 1MHz
Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	SOD-923
Current - average rectified	120mA	120mA	120mA	100mA
Current - reverse leakage @ vr	1 µA @ 25 V	1 µA @ 25 V	1 µA @ 25 V	200 nA @ 30 V
Package	Tape & Reel (TR) Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR) Cut Tape (CT)

Request a quote on any onsemi BAS4 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.