VS-43CTQ100GPBF Equivalent & Substitute Parts

Part Overview

The VS-43CTQ100GPBF is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 100 V DC reverse voltage and 20 A average rectified current per diode in a Through Hole TO-220-3 package. The part is currently classified as Obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io) (per Diode)	20 A
Voltage - Forward (Vf) (Max) @ If	980 mV @ 40 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 100 V
Operating Temperature - Junction (Max)	175°C
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the VS-43CTQ100GPBF is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io) (per Diode): 20 A
Mounting Type: Through Hole
Package / Case: TO-220-3

Secondary Compatibility Parameters:

Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts are grouped into the following categories based on their relationship to the main part:

Parametric Equivalent: VS-43CTQ100-M3 matches all primary and secondary criteria with identical electrical specifications and is manufactured by the same supplier.

Direct Manufacturer Equivalents: STPS41H100CT (STMicroelectronics) and DST40100C (Littelfuse Inc.) meet all primary substitution criteria with minor variations in forward voltage characteristics and reverse leakage specifications.

Functional Equivalents with Parameter Variations: NTST40100CTG (onsemi) and ST40100C (SMC Diode Solutions) satisfy primary substitution criteria but carry Obsolete or REACH Affected status designations.

Partial Equivalents: MBR20100CT (Good-Ark Semiconductor) provides 100 V reverse voltage and Common Cathode configuration but is rated for 10 A average rectified current, making it unsuitable for applications requiring the full 20 A specification.

Parameter Comparison

Parameter	VS-43CTQ100GPBF	VS-43CTQ100-M3	STPS41H100CT	DST40100C	NTST40100CTG	ST40100C	MBR20100CT
Manufacturer	Vishay	Vishay	STMicroelectronics	Littelfuse Inc.	onsemi	SMC Diode Solutions	Good-Ark Semiconductor
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io) (per Diode)	20 A	20 A	20 A	20 A	20 A	Not Specified	10 A
Voltage - Forward (Vf) (Max) @ If	980 mV @ 40 A	980 mV @ 40 A	800 mV @ 20 A	750 mV @ 20 A	800 mV @ 20 A	750 mV @ 20 A	Not Specified
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Small Signal ≤ 200mA (Io), Any Speed
Current - Reverse Leakage @ Vr	1 mA @ 100 V	1 mA @ 100 V	10 µA @ 100 V	1 mA @ 100 V	12 µA @ 70 V	1 mA @ 100 V	200 nA @ 100 V
Operating Temperature - Junction (Max)	175°C	175°C	175°C	150°C	150°C	150°C	Not Specified
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3 Full Pack, Isolated Tab
Product Status	Obsolete	Active	Active	Active	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	Not Specified	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Unaffected

Engineering Selection Recommendations

Recommended Primary Substitute: VS-43CTQ100-M3

The VS-43CTQ100-M3 is the optimal substitute for the obsolete VS-43CTQ100GPBF. This part is manufactured by Vishay General Semiconductor - Diodes Division and provides complete electrical and mechanical equivalence. All critical parameters match identically, including 100 V reverse voltage, 20 A average rectified current, 980 mV forward voltage at 40 A, and Fast Recovery speed characteristics. The part carries Active product status with ROHS3 compliance and REACH Unaffected designation. Inventory availability is substantial at 9798 pieces.

Recommended Secondary Substitutes: STPS41H100CT and DST40100C

STPS41H100CT (STMicroelectronics) and DST40100C (Littelfuse Inc.) both satisfy all primary substitution criteria with 100 V reverse voltage, 20 A average rectified current, and Fast Recovery speed. Both parts carry Active product status and ROHS3 compliance. STPS41H100CT exhibits lower forward voltage (800 mV @ 20 A) and reverse leakage (10 µA @ 100 V) compared to the main part. DST40100C provides forward voltage of 750 mV @ 20 A with reverse leakage of 1 mA @ 100 V, matching the main part specification. Both parts are suitable for direct substitution in applications where the main part specifications are required.

Conditional Substitutes: NTST40100CTG and ST40100C

NTST40100CTG (onsemi) meets all primary substitution criteria but carries Obsolete product status, limiting its utility for long-term procurement. ST40100C (SMC Diode Solutions) is Active and meets primary criteria but carries REACH Affected designation, requiring compliance verification for specific applications.

Not Recommended: MBR20100CT

MBR20100CT (Good-Ark Semiconductor) is not suitable as a substitute for the VS-43CTQ100GPBF due to reduced average rectified current rating of 10 A per diode, which does not meet the 20 A specification of the main part. Additionally, this part exhibits Small Signal speed characteristics rather than Fast Recovery, and operating temperature range is not specified.

Frequently Asked Questions (FAQ)

Q: Can VS-43CTQ100-M3 be used as a direct replacement for VS-43CTQ100GPBF?

A: Yes. VS-43CTQ100-M3 is a parametric equivalent with identical electrical specifications, diode configuration, package type, and mounting method. The part is manufactured by the same supplier and carries Active product status with ROHS3 compliance.

Q: What is the primary difference between STPS41H100CT and DST40100C?

A: Both parts meet the primary substitution criteria of 100 V reverse voltage and 20 A average rectified current. STPS41H100CT exhibits lower forward voltage (800 mV @ 20 A) and lower reverse leakage (10 µA @ 100 V). DST40100C provides forward voltage of 750 mV @ 20 A with reverse leakage of 1 mA @ 100 V. Selection depends on thermal and leakage performance requirements of the specific application.

Q: Why is MBR20100CT not recommended as a substitute?

A: MBR20100CT is rated for 10 A average rectified current per diode, which is insufficient for applications requiring the 20 A specification of the VS-43CTQ100GPBF. Additionally, the part exhibits Small Signal speed characteristics rather than the Fast Recovery speed of the main part.

Q: Are all substitute parts available in the same TO-220-3 package?

A: All recommended substitutes are available in TO-220-3 package configuration. MBR20100CT is available in TO-220-3 Full Pack with Isolated Tab variant, which provides mechanical compatibility but with the noted current rating limitation.

Q: What compliance certifications should be verified for substitute parts?

A: All recommended substitute parts carry ROHS3 compliance. REACH status varies: VS-43CTQ100-M3, STPS41H100CT, DST40100C, NTST40100CTG, and MBR20100CT are REACH Unaffected. ST40100C carries REACH Affected designation and requires compliance verification for specific applications or regions.

Q: Can NTST40100CTG be used despite its Obsolete status?

A: NTST40100CTG meets all primary substitution criteria and carries Fast Recovery speed characteristics. However, Obsolete product status indicates limited future availability. Current inventory is 2100 pieces. For new designs or long-term procurement, Active status alternatives such as STPS41H100CT or DST40100C are preferred.

Q: What is the significance of the operating temperature range difference between substitute parts?

A: The main part VS-43CTQ100GPBF specifies maximum junction temperature of 175°C. VS-43CTQ100-M3 and STPS41H100CT maintain this 175°C maximum. DST40100C, NTST40100CTG, and ST40100C specify maximum junction temperature of 150°C. Applications operating near thermal limits require verification that the reduced maximum temperature of alternative parts remains acceptable.

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