S4PBHM3_A/I Equivalent & Substitute Parts

Part Overview

The S4PBHM3_A/I is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V DC reverse voltage and 4 A average rectified current in a surface mount TO-277A (SMPC) package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement. The part belongs to the eSMP® series and carries automotive-grade qualification under AEC-Q101 standard.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	4	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 4 A	V
Reverse Recovery Time (trr)	2.5	µs
Current - Reverse Leakage @ Vr	10 @ 100 V	µA
Capacitance @ Vr, F	30 @ 4V, 1MHz	pF
Operating Temperature - Junction	-55 to 150	°C
Package / Case	TO-277, 3-PowerDFN
Mounting Type	Surface Mount
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution of the S4PBHM3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 4 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 4 A
Reverse Recovery Time (trr): 2.5 µs
Current - Reverse Leakage @ Vr: 10 µA @ 100 V
Capacitance @ Vr, F: 30 pF @ 4V, 1MHz
Operating Temperature - Junction: -55°C to 150°C
Package / Case: TO-277, 3-PowerDFN
Mounting Type: Surface Mount
Grade: Automotive
Qualification: AEC-Q101

All identified substitute parts maintain identical electrical performance characteristics and mechanical compatibility. Substitutes are classified as either manufacturer-recommended (active product status) or parametric equivalents (active product status with alternative part numbering schemes).

Parameter Comparison

Parameter	S4PBHM3_A/I	S4PBHM3_B/I	S4PB-M3/86A	S4PB-M3/87A
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	4 A	4 A	4 A	4 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 4 A	1.1 V @ 4 A	1.1 V @ 4 A	1.1 V @ 4 A
Reverse Recovery Time (trr)	2.5 µs	2.5 µs	2.5 µs	2.5 µs
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V
Capacitance @ Vr, F	30 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Package / Case	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Grade	Automotive	Automotive	Automotive	Automotive
Qualification	AEC-Q101	AEC-Q101	AEC-Q101	AEC-Q101
Product Status	Obsolete	Active	Active	Active
Series	eSMP®	eSMP®	eSMP®	eSMP®
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not specified	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

S4PBHM3_B/I is the manufacturer-recommended substitute for the obsolete S4PBHM3_A/I. This part maintains active product status with Vishay General Semiconductor - Diodes Division and carries identical electrical and mechanical specifications. The primary distinction is packaging format: S4PBHM3_B/I is supplied in Tape & Reel (TR) configuration, whereas the original part number does not specify packaging format.

S4PB-M3/86A and S4PB-M3/87A are parametric equivalents offering identical electrical performance and mechanical compatibility. Both parts are active products supplied in Tape & Reel (TR) packaging. These alternatives provide equivalent functionality with alternative part numbering schemes within the eSMP® series.

All substitute parts satisfy automotive-grade requirements and AEC-Q101 qualification. Selection among active alternatives should be based on procurement availability, packaging requirements, and supply chain considerations. The S4PBHM3_B/I represents the direct manufacturer-recommended path for design continuity.

Frequently Asked Questions (FAQ)

Q: Can S4PBHM3_B/I be used as a direct replacement for S4PBHM3_A/I?

A: Yes. S4PBHM3_B/I is the manufacturer-recommended substitute with identical electrical ratings (100 V, 4 A, 1.1 V forward voltage, 2.5 µs recovery time), matching thermal characteristics (-55°C to 150°C junction temperature), and equivalent mechanical packaging (TO-277, 3-PowerDFN surface mount). The primary difference is packaging format (Tape & Reel).

Q: What is the difference between S4PBHM3_B/I and S4PB-M3/86A?

A: Both parts are parametric equivalents with identical electrical specifications and mechanical compatibility. The difference lies in part numbering scheme and internal Vishay classification. Both are active products supplied in Tape & Reel packaging. Selection between these alternatives depends on procurement availability and supply chain preference.

Q: Are all substitute parts automotive-qualified?

A: Yes. All substitute parts carry automotive-grade classification and AEC-Q101 qualification, matching the original S4PBHM3_A/I specification.

Q: What is the significance of the obsolete status of S4PBHM3_A/I?

A: Obsolete status indicates the part is no longer manufactured or supported by Vishay. Active substitute parts ensure continued design support, technical documentation availability, and reliable procurement for new designs and production runs.

Q: Are there any differences in RoHS or REACH compliance between the main part and substitutes?

A: The main part S4PBHM3_A/I is specified as ROHS3 Compliant and REACH Unaffected. S4PB-M3/86A and S4PB-M3/87A carry identical ROHS3 Compliant and REACH Unaffected status. S4PBHM3_B/I does not specify these compliance parameters in the provided data.

Q: Can these diodes be used interchangeably in existing PCB designs?

A: Yes. All substitute parts share identical TO-277, 3-PowerDFN package specifications and surface mount mounting type, enabling direct PCB footprint compatibility without layout modifications.

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

A: S4PBHM3_A/I, S4PB-M3/86A, and S4PB-M3/87A are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.

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