How do the onsemi onsemi UF40 Series variants differ?

onsemi UF40 Series part numbers differ by current - reverse leakage @ vr, operating temperature - junction, reverse recovery time and voltage - DC reverse (Vr). Use the selection guide above to pick by current - reverse leakage @ vr.

How many onsemi onsemi UF40 Series part numbers are listed?

7 onsemi onsemi UF40 Series part numbers are listed, each with specifications and a datasheet where available.

onsemi UF40 Series

7 variants · onsemi

About the onsemi onsemi UF40 Series series

The onsemi onsemi UF40 Series series groups 7 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common capacitance @ vr, f of 17pF @ 4V, 1MHz, case of DO-204AL, DO-41, Axial and current - average rectified of 1A. Variants differ by current - reverse leakage @ vr, operating temperature - junction and reverse recovery time, so you can match the exact current - reverse leakage @ vr your application requires using the selection guide below.

Select a variant by

Current - reverse leakage @ vr: 5 µA @ 1000 V · 10 µA @ 400 V
Operating temperature - junction: -65°C ~ 150°C · -55°C ~ 150°C
Reverse recovery time: 50 ns · 75 ns
Voltage - DC reverse (Vr): 400 V · 1000 V
Voltage - forward (Vf) (Max) @ if: 1 V @ 1 A · 1.7 V @ 1 A

Variant comparison

Parameter	UF4007	UF4004
Current - reverse leakage @ vr	5 µA @ 1000 V	10 µA @ 400 V
Operating temperature - junction	-55°C ~ 150°C	-65°C ~ 150°C
Reverse recovery time	75 ns	50 ns
Voltage - DC reverse (Vr)	1000 V	400 V
Voltage - forward (Vf) (Max) @ if	1.7 V @ 1 A	1 V @ 1 A

Shared specifications

Capacitance @ vr, f: 17pF @ 4V, 1MHz
Case: DO-204AL, DO-41, Axial
Current - average rectified: 1A
Mounting type: Through Hole
Package: Tape & Reel (TR) Cut Tape (CT)
Speed: Fast Recovery =< 500ns, > 200mA (Io)
Technology: Standard

Request a quote on any onsemi UF40 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

Frequently asked questions

How do the onsemi onsemi UF40 Series variants differ?: onsemi UF40 Series part numbers differ by current - reverse leakage @ vr, operating temperature - junction, reverse recovery time and voltage - DC reverse (Vr). Use the selection guide above to pick by current - reverse leakage @ vr.
How many onsemi onsemi UF40 Series part numbers are listed?: 7 onsemi onsemi UF40 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for onsemi onsemi UF40 Series?: Request a quote (RFQ) for any onsemi UF40 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.