S4PBHM3_A/H Equivalent & Substitute Parts: Rectifier Diode Reference

Part Overview

The S4PBHM3_A/H (Vishay General Semiconductor - Diodes Division) is a 100 V, 4 A general-purpose rectifier diode in a TO-277A (SMPC) surface-mount package. It is qualified for automotive applications (AEC-Q101), features standard recovery performance, and is ROHS3 compliant. The part is classified as obsolete, necessitating identification of suitable substitutes for continued production or maintenance requirements.

Key Parameters

Parameter	S4PBHM3_A/H
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	4A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 4 A
Reverse Recovery Time (trr)	2.5 µs
Speed	Standard Recovery >500ns, >200mA (Io)
Current - Reverse Leakage @ Vr	10 µA @ 100 V
Capacitance @ Vr, F	30pF @ 4V, 1MHz
Automotive Grade	Yes
Qualification	AEC-Q101
Mounting Type	Surface Mount
Package / Case	TO-277, 3-PowerDFN
Supplier Device Package	TO-277A (SMPC)
Operating Temperature - Junction	-65°C ~ 175°C
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
MSL	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution is determined by matching all critical parameters that affect electrical and mechanical compatibility. These parameters include:

Diode category and rectification function
Maximum reverse voltage (Vr)
Average rectified current (Io)
Maximum forward voltage (Vf) at rated current
Reverse recovery time (trr) and speed classification
Maximum reverse leakage current at rated voltage
Capacitance specifications
Automotive grade qualification and AEC-Q101 status
Mounting type and package dimensions
Operating junction temperature range
RoHS and REACH compliance

Only substitute parts meeting these conditions are valid per provided input data.

Parameter Comparison

Parameter	S4PBHM3_A/H	S4PBHM3_B/H
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers
Series	eSMP®	eSMP®
Voltage - DC Reverse (Vr) (Max)	100 V	100 V
Current - Average Rectified (Io)	4A	4A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 4 A	1.1 V @ 4 A
Speed	Standard Recovery >500ns, >200mA (Io)	Standard Recovery >500ns, >200mA (Io)
Reverse Recovery Time (trr)	2.5 µs	2.5 µs
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V
Capacitance @ Vr, F	30pF @ 4V, 1MHz	30pF @ 4V, 1MHz
Grade	Automotive	Automotive
Qualification	AEC-Q101	AEC-Q101
Mounting Type	Surface Mount	Surface Mount
Package / Case	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN
Supplier Device Package	TO-277A (SMPC)	TO-277A (SMPC)
Operating Temperature - Junction	-65°C ~ 175°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	-
Inventory	688 Pcs New Original In Stock	708 Pcs New Original In Stock
HTSUS	8541.10.0080	8541.10.0080
ECCN	EAR99	EAR99

Engineering Selection Recommendations

The main part, S4PBHM3_A/H, is obsolete. The manufacturer-recommended substitute S4PBHM3_B/H is active, has matched electrical parameters, packaging, and automotive qualification (AEC-Q101). Selection is supported by equivalent function, package, and compliance status per the input.

Frequently Asked Questions (FAQ)

Q1: What are the essential parameters for selecting a S4PBHM3_A/H substitute?
A1: Essential parameters include diode category, maximum reverse voltage, average rectified current, forward voltage at rated current, reverse recovery time, speed, reverse leakage current, capacitance, automotive grade qualification, AEC-Q101 status, mounting type, package, and compliance with RoHS and REACH regulations.

Q2: Is package compatibility ensured between S4PBHM3_A/H and S4PBHM3_B/H?
A2: Both parts use the TO-277, 3-PowerDFN package and Supplier Device Package TO-277A (SMPC), ensuring mechanical compatibility.

Q3: Are automotive and environmental qualifications identical for these parts?
A3: Both parts specify automotive grade and AEC-Q101 qualification. RoHS compliance is explicitly listed for S4PBHM3_A/H, and the substitute matches the required grade and qualification.

Q4: How does the operating junction temperature range affect substitution?
A4: S4PBHM3_A/H lists -65°C ~ 175°C; S4PBHM3_B/H lists -55°C ~ 150°C. Selection based on these ranges should consider only the specified values.

Q5: Where does inventory availability stand for both parts?
A5: S4PBHM3_A/H has 688 pcs in stock. S4PBHM3_B/H has 708 pcs, per provided inventory data.

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