VF20100S-E3/45 Equivalent & Substitute Parts

Part Overview

The VF20100S-E3/45 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V DC reverse voltage and 20 A average rectified current. This component is part of the TMBS® series and features a through-hole TO-220-3 package with isolated tab configuration. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	20 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 20 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 100 V
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab
Operating Temperature - Junction	-40°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the VF20100S-E3/45 is determined by the following critical parameters: reverse voltage rating (100 V), average rectified current capacity, forward voltage characteristics, switching speed classification, and through-hole mounting configuration. Substitute parts must maintain electrical compatibility within the specified operating envelope while meeting regulatory compliance requirements.

The substitute parts are grouped into two categories:

Parametric Equivalents: Parts that match the primary electrical specifications (100 V, 20 A) and package form factor, differing only in packaging format or product status.

Manufacturer-Recommended Substitute: A part with enhanced current rating (30 A) and improved reverse leakage characteristics, suitable for applications where the original 20 A specification can accommodate higher current capacity without circuit redesign.

Parameter Comparison

Parameter	VF20100S-E3/45	VF20100S-E3/4W	VF20100S-M3/4W	STPS30M100SFP
Manufacturer	Vishay	Vishay	Vishay	STMicroelectronics
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	20 A	20 A	20 A	30 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 20 A	900 mV @ 20 A	900 mV @ 20 A	800 mV @ 30 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	500 µA @ 100 V	500 µA @ 100 V	500 µA @ 100 V	175 µA @ 100 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack
Operating Temperature - Junction	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C	150°C (Max)
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

VF20100S-E3/4W and VF20100S-M3/4W are direct parametric equivalents to the VF20100S-E3/45. Both parts maintain identical electrical specifications (100 V, 20 A, 900 mV forward voltage) and package configuration. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating. VF20100S-E3/4W is available in higher inventory (39,200 units) and retains the TMBS® series designation. VF20100S-M3/4W is available in lower inventory (1,007 units) and does not specify a series designation. Selection between these two should be based on procurement availability and supply chain requirements.

For Enhanced Performance Substitution:

STPS30M100SFP is a manufacturer-recommended substitute from STMicroelectronics with enhanced specifications. This part maintains the 100 V reverse voltage rating and through-hole TO-220 mounting but provides 30 A average rectified current capacity (versus 20 A) and improved reverse leakage characteristics (175 µA versus 500 µA at 100 V). Forward voltage is reduced to 800 mV at 30 A. This part is suitable for applications where the circuit design can accommodate higher current capacity without modification. STPS30M100SFP is active, ROHS3 compliant, and available in moderate inventory (3,032 units).

All substitute parts meet regulatory compliance requirements (ROHS3, REACH Unaffected, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can VF20100S-E3/4W be used as a direct replacement for VF20100S-E3/45?

A: Yes. VF20100S-E3/4W is a parametric equivalent with identical electrical specifications (100 V, 20 A, 900 mV forward voltage) and package configuration (TO-220-3 with isolated tab). The difference is packaging format (tube versus full pack) and product status (active versus obsolete). Electrical performance and pin compatibility are equivalent.

Q: What is the difference between VF20100S-E3/4W and VF20100S-M3/4W?

A: Both parts are parametric equivalents with identical electrical specifications and package configuration. VF20100S-E3/4W is designated as TMBS® series, while VF20100S-M3/4W does not specify a series designation. VF20100S-E3/4W has significantly higher inventory availability (39,200 units versus 1,007 units). Electrical performance is equivalent.

Q: Can STPS30M100SFP replace VF20100S-E3/45 in all applications?

A: STPS30M100SFP maintains the 100 V reverse voltage rating and through-hole mounting but provides 30 A current capacity versus the original 20 A specification. This part is suitable for applications where the circuit design can accommodate higher current capacity. The improved reverse leakage (175 µA versus 500 µA) and reduced forward voltage (800 mV at 30 A) represent performance enhancements. Mechanical compatibility is confirmed for TO-220 mounting, though the package designation differs (TO-220FPAB versus ITO-220AB).

Q: Are all substitute parts RoHS compliant?

A: Yes. VF20100S-E3/4W, VF20100S-M3/4W, and STPS30M100SFP are all ROHS3 compliant. All parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: What is the operating temperature range for these parts?

A: VF20100S-E3/45, VF20100S-E3/4W, and VF20100S-M3/4W operate from -40°C to 150°C junction temperature. STPS30M100SFP specifies a maximum junction temperature of 150°C. All parts are suitable for the same thermal operating envelope.

Q: How do the reverse leakage characteristics compare?

A: VF20100S-E3/45, VF20100S-E3/4W, and VF20100S-M3/4W specify 500 µA reverse leakage at 100 V. STPS30M100SFP provides improved reverse leakage of 175 µA at 100 V, representing a 65% reduction in leakage current. This characteristic may be advantageous in applications sensitive to leakage current performance.

Q: What is the moisture sensitivity level for these parts?

A: All substitute parts (VF20100S-E3/4W, VF20100S-M3/4W, and STPS30M100SFP) are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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