SS3P4HM3J/84A Equivalent & Substitute Parts

Part Overview

The SS3P4HM3J/84A is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-220AA package. This component is rated for 40 V DC reverse voltage with 3 A average rectified current and features fast recovery characteristics suitable for high-frequency switching applications. The part maintains Active product status and carries automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified to address inventory availability, supply chain continuity, and equivalent electrical performance requirements in circuit designs where this diode is specified.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	150	µA @ 40 V
Capacitance @ Vr, F	130	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-220AA (SMP)	—
Mounting Type	Surface Mount	—
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitution eligibility for the SS3P4HM3J/84A is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 600 mV @ 3 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 150 µA @ 40 V
Package / Case: DO-220AA (SMP)
Mounting Type: Surface Mount
Technology: Schottky
Operating Temperature - Junction: -55°C to 150°C

All identified substitute parts maintain identical electrical ratings and mechanical specifications. Variations in series designation (eSMP® vs. standard) and packaging tape reel configurations do not affect functional equivalence. All substitute parts share the same base product number SS3P4 and are manufactured by Vishay General Semiconductor - Diodes Division.

Parameter Comparison

Parameter	SS3P4HM3J/84A	SS3P4-M3/84A	SS3P4HM3/84A	SS3P4HM3/85A
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 3 A	600 mV @ 3 A	600 mV @ 3 A	600 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	150 µA @ 40 V	150 µA @ 40 V	150 µA @ 40 V	150 µA @ 40 V
Capacitance @ Vr, F	130 pF @ 4V, 1MHz	130 pF @ 4V, 1MHz	130 pF @ 4V, 1MHz	Not specified
Package / Case	DO-220AA (SMP)	DO-220AA (SMP)	DO-220AA (SMP)	DO-220AA (SMP)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Product Status	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical equivalence to the SS3P4HM3J/84A. Selection among these alternatives is based on the following factors:

Automotive Grade Compliance: The SS3P4HM3J/84A, SS3P4HM3/84A, and SS3P4HM3/85A carry automotive-grade designation with AEC-Q101 qualification. The SS3P4-M3/84A does not specify automotive-grade qualification. For applications requiring automotive compliance, select from SS3P4HM3/84A or SS3P4HM3/85A.

Series Designation: The SS3P4-M3/84A and SS3P4HM3/85A are designated as eSMP® series components. The SS3P4HM3J/84A and SS3P4HM3/84A do not carry this series designation. Series designation does not affect electrical performance or package compatibility.

Inventory Availability: Current stock levels vary across substitute parts. SS3P4-M3/84A maintains the highest inventory (20,300 units), followed by SS3P4HM3/85A (10,776 units), SS3P4HM3J/84A (885 units), and SS3P4HM3/84A (2,063 units).

Regulatory Compliance: All parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. All parts share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Frequently Asked Questions (FAQ)

Q: Can SS3P4-M3/84A be used as a direct replacement for SS3P4HM3J/84A in automotive applications?

A: The SS3P4-M3/84A does not carry automotive-grade qualification or AEC-Q101 certification. For automotive applications requiring these qualifications, use SS3P4HM3/84A or SS3P4HM3/85A instead.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the DO-220AA (SMP) package with identical mechanical dimensions and surface mount configuration. PCB footprints are interchangeable.

Q: What is the difference between eSMP® series and standard series designations?

A: Series designation indicates manufacturing process or product line classification. Both eSMP® and standard series maintain identical electrical specifications and package compatibility for the SS3P4 base product number.

Q: Do the substitute parts have identical thermal characteristics?

A: All substitute parts share the same operating temperature range (-55°C to 150°C junction temperature). Thermal performance is equivalent across all listed alternatives.

Q: Is capacitance specification critical for substitution?

A: The SS3P4HM3/85A does not specify capacitance value. For applications where capacitance at 4V, 1MHz is a design parameter, use SS3P4HM3J/84A, SS3P4-M3/84A, or SS3P4HM3/84A, which all specify 130 pF.

Q: Can these parts be used interchangeably in high-frequency switching circuits?

A: Yes. All substitute parts maintain identical fast recovery characteristics (≤ 500ns, > 200mA) and forward voltage specifications, ensuring equivalent performance in high-frequency switching applications.

Q: What is the significance of the tape reel packaging designation?

A: Tape & Reel (TR) packaging indicates the parts are supplied on continuous tape for automated assembly. This is a supply format specification and does not affect electrical or mechanical performance.

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