How do the Vishay Vishay SI46 Series variants differ?

Vishay SI46 Series part numbers differ by current - continuous drain (Id) @ 25°C, drain to source voltage, gate charge (Qg) (Max) @ vgs and input capacitance (Ciss) (Max) @ vds. Use the selection guide above to pick by current - continuous drain (Id) @ 25°C.

How many Vishay Vishay SI46 Series part numbers are listed?

4 Vishay Vishay SI46 Series part numbers are listed, each with specifications and a datasheet where available.

Vishay SI46 Series

4 variants · Vishay

About the Vishay Vishay SI46 Series series

The Vishay Vishay SI46 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), drive voltage (Max rds on, min rds on) of 4.5V, 10V and FET feature of -. Variants differ by current - continuous drain (Id) @ 25°C, drain to source voltage and gate charge (Qg) (Max) @ vgs, so you can match the exact current - continuous drain (Id) @ 25°C your application requires using the selection guide below. All listed Vishay SI46 Series part numbers are active and orderable.

Select a variant by

Current - continuous drain (Id) @ 25°C: 18.2A (Tc) · 24.5A (Tc) · 40A (Tc)
Drain to source voltage: 25 V · 30 V
Gate charge (Qg) (Max) @ vgs: 26 nC @ 10 V · 68 nC @ 10 V · 161 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds: 1220 pF @ 15 V · 3150 pF @ 15 V · 6670 pF @ 15 V
Power dissipation: 2.5W (Ta), 5.7W (Tc) · 3W (Ta), 5.2W (Tc) · 3.5W (Ta), 7.8W (Tc)
Rds on (Max) @ id, vgs: 2.7mOhm @ 20A, 10V · 5.2mOhm @ 15A, 10V · 9.5mOhm @ 13.8A, 10V
Vgs: ±16V · ±20V

Variant comparison

Parameter	SI4630DY-T1-GE3	SI4634DY-T1-E3	SI4686DY-T1-E3	SI4686DY-T1-GE3
Current - continuous drain (Id) @ 25°C	40A (Tc)	24.5A (Tc)	18.2A (Tc)	18.2A (Tc)
Drain to source voltage	25 V	30 V	30 V	30 V
Gate charge (Qg) (Max) @ vgs	161 nC @ 10 V	68 nC @ 10 V	26 nC @ 10 V	26 nC @ 10 V
Input capacitance (Ciss) (Max) @ vds	6670 pF @ 15 V	3150 pF @ 15 V	1220 pF @ 15 V	1220 pF @ 15 V
Power dissipation	3.5W (Ta), 7.8W (Tc)	2.5W (Ta), 5.7W (Tc)	3W (Ta), 5.2W (Tc)	3W (Ta), 5.2W (Tc)
Rds on (Max) @ id, vgs	2.7mOhm @ 20A, 10V	5.2mOhm @ 15A, 10V	9.5mOhm @ 13.8A, 10V	9.5mOhm @ 13.8A, 10V
Vgs	±16V	±20V	±20V	±20V

Shared specifications

Case: 8-SOIC (0.154\", 3.90mm Width)
Drive voltage (Max rds on, min rds on): 4.5V, 10V
FET feature: -
FET type: N-Channel
Mounting type: Surface Mount
Operating temperature: -55°C~150°C(TJ)
Package: Tape & Reel (TR); Cut Tape (CT)
Technology: MOSFET (Metal Oxide)

Request a quote on any Vishay SI46 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 SI46 Series variants differ?: Vishay SI46 Series part numbers differ by current - continuous drain (Id) @ 25°C, drain to source voltage, gate charge (Qg) (Max) @ vgs and input capacitance (Ciss) (Max) @ vds. Use the selection guide above to pick by current - continuous drain (Id) @ 25°C.
How many Vishay Vishay SI46 Series part numbers are listed?: 4 Vishay Vishay SI46 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for Vishay Vishay SI46 Series?: Request a quote (RFQ) for any Vishay SI46 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.