How do the Vishay Vishay SI42 Series variants differ?

Vishay SI42 Series part numbers differ by current - continuous drain (Id) @ 25°C, drain to source voltage, FET feature and gate charge (Qg) (Max) @ vgs. Use the selection guide above to pick by current - continuous drain (Id) @ 25°C.

How many Vishay Vishay SI42 Series part numbers are listed?

4 Vishay Vishay SI42 Series part numbers are listed, each with specifications and a datasheet where available.

Vishay SI42 Series

4 variants · Vishay

About the Vishay Vishay SI42 Series series

The Vishay Vishay SI42 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 case of 8-SOIC (0.154\", 3.90mm Width), FET type of 2 N-Channel (Dual) and mounting type of Surface Mount. Variants differ by current - continuous drain (Id) @ 25°C, drain to source voltage and FET feature, so you can match the exact current - continuous drain (Id) @ 25°C your application requires using the selection guide below. All listed Vishay SI42 Series part numbers are active and orderable.

Select a variant by

Current - continuous drain (Id) @ 25°C: 8A · 9.2A · 12.1A · 19.8A
Drain to source voltage: 20V · 25V · 30V · 40V
FET feature: Logic Level Gate · Standard
Gate charge (Qg) (Max) @ vgs: 15nC @ 10V · 17nC @ 10V · 25nC @ 10V · 45nC @ 10V
Input capacitance (Ciss) (Max) @ vds: 580pF @ 20V · 710pF @ 15V · 790pF @ 12.5V · 2110pF @ 10V
Power - max: 3.1W · 3.25W · 3.7W
Rds on (Max) @ id, vgs: 4.6mOhm @ 10A, 10V · 14mOhm @ 8A, 10V · 18mOhm @ 7A, 10V · 20mOhm @ 10A, 10V
Vgs(th) (Max) @ id: 1.4V @ 250µA · 2.4V @ 250µA · 2.5V @ 250µA

Variant comparison

Parameter	SI4202DY-T1-GE3	SI4204DY-T1-GE3	SI4228DY-T1-GE3	SI4288DY-T1-GE3
Current - continuous drain (Id) @ 25°C	12.1A	19.8A	8A	9.2A
Drain to source voltage	30V	20V	25V	40V
FET feature	Logic Level Gate	Standard	Logic Level Gate	Logic Level Gate
Gate charge (Qg) (Max) @ vgs	17nC @ 10V	45nC @ 10V	25nC @ 10V	15nC @ 10V
Input capacitance (Ciss) (Max) @ vds	710pF @ 15V	2110pF @ 10V	790pF @ 12.5V	580pF @ 20V
Power - max	3.7W	3.25W	3.1W	3.1W
Rds on (Max) @ id, vgs	14mOhm @ 8A, 10V	4.6mOhm @ 10A, 10V	18mOhm @ 7A, 10V	20mOhm @ 10A, 10V
Vgs(th) (Max) @ id	2.5V @ 250µA	2.4V @ 250µA	1.4V @ 250µA	2.5V @ 250µA

Shared specifications

Case: 8-SOIC (0.154\", 3.90mm Width)
FET type: 2 N-Channel (Dual)
Mounting type: Surface Mount
Operating temperature: -55°C~150°C(TJ)
Package: Tape & Reel (TR); Cut Tape (CT)

Request a quote on any Vishay SI42 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 Vishay Vishay SI42 Series variants differ?: Vishay SI42 Series part numbers differ by current - continuous drain (Id) @ 25°C, drain to source voltage, FET feature and gate charge (Qg) (Max) @ vgs. Use the selection guide above to pick by current - continuous drain (Id) @ 25°C.
How many Vishay Vishay SI42 Series part numbers are listed?: 4 Vishay Vishay SI42 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for Vishay Vishay SI42 Series?: Request a quote (RFQ) for any Vishay SI42 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.