AS4PJHM3/87A Equivalent & Substitute Parts

Part Overview

The AS4PJHM3/87A is an avalanche diode rated for 600 V DC reverse voltage with 2.4 A average rectified current, packaged in a surface mount TO-277A (SMPC) configuration. This component is manufactured by Vishay General Semiconductor - Diodes Division as part of the eSMP® series and is classified as a standard recovery rectifier diode.

The AS4PJHM3/87A has been discontinued at DiGi Electronics. Equivalent and substitute parts are available to maintain design continuity and ensure procurement of functionally compatible components for new production runs or replacement inventory.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	2.4 A
Voltage - Forward (Vf) (Max) @ If	962 mV @ 2 A
Reverse Recovery Time (trr)	1.8 µs
Current - Reverse Leakage @ Vr	10 µA @ 600 V
Capacitance @ Vr, F	60 pF @ 4 V, 1 MHz
Operating Temperature - Junction	-55°C to 175°C
Package / Case	TO-277, 3-PowerDFN
Mounting Type	Surface Mount
Technology	Avalanche
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the AS4PJHM3/87A is determined by electrical and mechanical parameter equivalence across the following criteria:

Electrical Parameters (Critical for Substitution):

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 2.4 A
Reverse Recovery Time (trr): 1.8 µs
Current - Reverse Leakage @ Vr: 10 µA @ 600 V
Capacitance @ Vr, F: 60 pF @ 4 V, 1 MHz
Operating Temperature - Junction: -55°C to 175°C

Mechanical Parameters (Critical for Substitution):

Package / Case: TO-277, 3-PowerDFN
Mounting Type: Surface Mount
Supplier Device Package: TO-277A (SMPC)

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Technology: Avalanche

Parts are grouped as direct substitutes when all electrical and mechanical parameters match the main part specification. Parametric equivalents maintain the same core electrical ratings and package configuration.

Parameter Comparison

Parameter	AS4PJHM3/87A (Main)	AS4PJHM3_A/I	AS4PJ-M3/86A	AS4PJ-M3/87A
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	2.4 A	2.4 A	2.4 A	2.4 A
Voltage - Forward (Vf) (Max) @ If	962 mV @ 2 A	1.1 V @ 4 A	962 mV @ 2 A	962 mV @ 2 A
Reverse Recovery Time (trr)	1.8 µs	1.8 µs	1.8 µs	1.8 µs
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V
Capacitance @ Vr, F	60 pF @ 4 V, 1 MHz	60 pF @ 4 V, 1 MHz	60 pF @ 4 V, 1 MHz	60 pF @ 4 V, 1 MHz
Operating Temperature - Junction	-55°C to 175°C	-55°C to 175°C	-55°C to 175°C	-55°C to 175°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
Technology	Avalanche	Avalanche	Avalanche	Avalanche
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

AS4PJHM3_A/I is a direct substitute with automotive-grade qualification (AEC-Q101). This part maintains all electrical parameters of the main part and is currently in active production status. The forward voltage specification differs at a different test current (1.1 V @ 4 A versus 962 mV @ 2 A), but both measurements are within the avalanche diode characteristic curve and do not affect substitution validity. This part is supplied in Tape & Reel packaging and carries ROHS3 compliance.

AS4PJ-M3/86A is a parametric equivalent with identical electrical specifications to the main part, including forward voltage measurement at 2 A. This part is in active production status with 1800 units in stock inventory. It is supplied in Tape & Reel packaging and maintains ROHS3 compliance.

AS4PJ-M3/87A is a parametric equivalent with identical electrical specifications to the main part. This part is in active production status with 972 units in stock inventory. It is supplied in Tape & Reel packaging and maintains ROHS3 compliance.

All three substitute parts are manufactured by Vishay General Semiconductor - Diodes Division, maintain the eSMP® series designation, and are ROHS3 compliant. Selection between substitutes should be based on availability, packaging requirements (Tape & Reel), and automotive qualification needs.

Frequently Asked Questions (FAQ)

Q: Can AS4PJHM3_A/I replace AS4PJHM3/87A in all applications?

A: Yes. AS4PJHM3_A/I maintains all critical electrical parameters: 600 V reverse voltage, 2.4 A average rectified current, 1.8 µs reverse recovery time, and identical package configuration (TO-277A SMPC). The forward voltage is specified at a different test current but remains within the avalanche diode operating characteristic. This part is actively produced and ROHS3 compliant.

Q: What is the difference between AS4PJ-M3/86A and AS4PJ-M3/87A?

A: Both parts are parametric equivalents with identical electrical specifications and package configuration. The primary difference is inventory availability: AS4PJ-M3/86A has 1800 units in stock, while AS4PJ-M3/87A has 972 units in stock. Both are actively produced and ROHS3 compliant.

Q: Does the forward voltage difference in AS4PJHM3_A/I affect circuit performance?

A: The forward voltage specification for AS4PJHM3_A/I is measured at 4 A (1.1 V), while the main part and other substitutes are measured at 2 A (962 mV). Both measurements represent the same diode characteristic at different operating points. The avalanche diode forward voltage curve is continuous across this current range, and the part is electrically equivalent for circuit substitution.

Q: Are all substitute parts surface mount in the same package?

A: Yes. All substitute parts use the TO-277, 3-PowerDFN package in surface mount configuration with TO-277A (SMPC) supplier device package designation. Mechanical compatibility is maintained across all substitutes.

Q: What is the significance of AEC-Q101 qualification on AS4PJHM3_A/I?

A: AEC-Q101 is an automotive electronics qualification standard. AS4PJHM3_A/I carries this qualification, indicating it meets automotive-grade reliability and testing requirements. This qualification is provided as additional information; all substitute parts maintain equivalent electrical and mechanical specifications for general industrial applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts, including the main part AS4PJHM3/87A, carry ROHS3 compliance status. This ensures compliance with Restriction of Hazardous Substances regulations across all substitution options.

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

A: All parts, including the main part and all substitutes, operate across a junction temperature range of -55°C to 175°C. This specification is identical across all components and does not differentiate substitution options.

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