AU3PJHM3_A/I Avalanche Diode Equivalent & Substitute Parts

Part Overview

The AU3PJHM3_A/I is an avalanche rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, classified within the eSMP® series. This surface mount component operates at 600V DC reverse voltage with 1.7A average rectified current and is housed in a TO-277A (SMPC) package. The device is actively produced and maintains automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative part numbers within the same manufacturer's product line.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1.7	A
Voltage - Forward (Vf) (Max) @ If	1.9 @ 3	V @ A
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	10 @ 600	µA @ V
Capacitance @ Vr, F	72 @ 4V, 1MHz	pF
Operating Temperature - Junction	-55 to 175	°C
Package / Case	TO-277, 3-PowerDFN
Mounting Type	Surface Mount
Technology	Avalanche

Substitute Part Grouping Explanation

Substitute parts for the AU3PJHM3_A/I are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

Electrical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1.7 A
Voltage - Forward (Vf) (Max) @ If: 1.9 V @ 3 A
Reverse Recovery Time (trr): 75 ns
Current - Reverse Leakage @ Vr: 10 µA @ 600 V
Capacitance @ Vr, F: 72 pF @ 4V, 1MHz

Mechanical Parameters (Must Match):

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

Technology & Series (Must Match):

Technology: Avalanche
Series: eSMP®

Compliance & Status (Must Match):

Product Status: Active
RoHS Status: ROHS3 Compliant
Operating Temperature - Junction: -55°C ~ 175°C

Parameter Comparison

Parameter	AU3PJHM3_A/I	AU3PJ-M3/86A	Match
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	✓
Current - Average Rectified (Io)	1.7 A	1.7 A	✓
Voltage - Forward (Vf) (Max) @ If	1.9 V @ 3 A	1.9 V @ 3 A	✓
Reverse Recovery Time (trr)	75 ns	75 ns	✓
Current - Reverse Leakage @ Vr	10 µA @ 600 V	10 µA @ 600 V	✓
Capacitance @ Vr, F	72 pF @ 4V, 1MHz	72 pF @ 4V, 1MHz	✓
Operating Temperature - Junction	-55°C ~ 175°C	-55°C ~ 175°C	✓
Package / Case	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	✓
Mounting Type	Surface Mount	Surface Mount	✓
Supplier Device Package	TO-277A (SMPC)	TO-277A (SMPC)	✓
Technology	Avalanche	Avalanche	✓
Series	eSMP®	eSMP®	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

The AU3PJ-M3/86A is a direct parametric equivalent to the AU3PJHM3_A/I. Both components are manufactured by Vishay General Semiconductor - Diodes Division within the eSMP® series and maintain identical electrical specifications across all critical parameters including reverse voltage, forward voltage, reverse recovery time, and leakage current. Both devices are housed in the TO-277A (SMPC) surface mount package and operate across the same temperature range of -55°C to 175°C.

Both parts maintain active product status and ROHS3 compliance, ensuring continued availability and regulatory alignment. The AU3PJ-M3/86A demonstrates higher inventory availability (6400 pieces) compared to the AU3PJHM3_A/I (689 pieces), which may influence procurement decisions based on supply chain requirements.

Selection between these two part numbers is based on availability, lead time, and procurement source rather than electrical or mechanical performance differences.

Frequently Asked Questions (FAQ)

Q: Can AU3PJ-M3/86A be used as a direct replacement for AU3PJHM3_A/I?

A: Yes. Both parts are parametrically equivalent across all electrical specifications, package configuration, and operating temperature range. No circuit modifications are required for substitution.

Q: Are there differences in the TO-277A (SMPC) package between these parts?

A: No. Both components use identical TO-277, 3-PowerDFN package geometry and supplier device package designation TO-277A (SMPC), ensuring mechanical and thermal compatibility on the same PCB layout.

Q: Do both parts meet automotive qualification requirements?

A: The AU3PJHM3_A/I carries explicit AEC-Q101 automotive qualification. The AU3PJ-M3/86A specifications do not include stated automotive qualification in the provided data. Automotive application requirements should be verified with the manufacturer before substitution.

Q: What is the difference between the part numbers AU3PJHM3_A/I and AU3PJ-M3/86A?

A: The part numbers reflect different manufacturing codes or packaging variants within Vishay's product line. Both share the base product number AU3 and maintain identical electrical and mechanical specifications. The suffix variations indicate different manufacturing batches or distribution channels.

Q: Are the reverse recovery time and leakage current specifications identical?

A: Yes. Both parts specify 75 ns reverse recovery time and 10 µA reverse leakage current at 600V, confirming equivalent switching performance and static characteristics.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both components operate across the identical junction temperature range of -55°C to 175°C, supporting equivalent thermal performance in high-temperature circuit environments.

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