SS2P4HM3/85A Equivalent & Substitute Parts

Part Overview

The SS2P4HM3/85A is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, classified within the eSMP® series. This surface mount diode is rated for 40 V DC reverse voltage and 2 A average rectified current in a DO-220AA package. The part is actively produced and carries automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same package type and performance specifications, ensuring direct functional replacement in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 2 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	150	µA @ 40 V
Capacitance @ Vr, F	110	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-220AA	—
Mounting Type	Surface Mount	—
Technology	Schottky	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitute parts for the SS2P4HM3/85A are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 550 mV @ 2 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 150 µA @ 40 V
Capacitance @ Vr, F: 110 pF @ 4V, 1MHz
Operating Temperature - Junction: -55°C to 150°C
Package / Case: DO-220AA
Mounting Type: Surface Mount
Technology: Schottky
Series: eSMP®

All substitute parts must maintain identical electrical performance characteristics and physical package specifications to ensure direct functional replacement without circuit redesign.

Parameter Comparison

Parameter	SS2P4HM3/85A	SS2P4-M3/84A	SS2P4HM3/84A
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 2 A	550 mV @ 2 A	550 mV @ 2 A
Speed	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
Capacitance @ Vr, F	110 pF @ 4V, 1MHz	110 pF @ 4V, 1MHz	110 pF @ 4V, 1MHz
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Package / Case	DO-220AA	DO-220AA	DO-220AA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Series	eSMP®	eSMP®	eSMP®
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Grade	Automotive	Not specified	Automotive
Qualification	AEC-Q101	Not specified	AEC-Q101

Engineering Selection Recommendations

SS2P4-M3/84A: This part is a parametric equivalent to SS2P4HM3/85A with identical electrical and mechanical specifications. However, automotive-grade designation and AEC-Q101 qualification are not specified for this variant. Selection of this part is appropriate for non-automotive applications where automotive qualification is not a requirement. Inventory availability is significantly higher at 107,200 pieces.

SS2P4HM3/84A: This part maintains full parametric equivalence to SS2P4HM3/85A and carries identical automotive-grade designation and AEC-Q101 qualification. This part is suitable for direct substitution in automotive applications requiring AEC-Q101 compliance. Inventory availability is 2,400 pieces. Both the main part and this substitute share equivalent compliance certifications and operational characteristics.

For applications requiring automotive qualification and AEC-Q101 compliance, SS2P4HM3/84A is the appropriate substitute. For general-purpose applications without automotive requirements, SS2P4-M3/84A provides equivalent electrical performance with greater inventory availability.

Frequently Asked Questions (FAQ)

Q: Can SS2P4-M3/84A be used in place of SS2P4HM3/85A in automotive applications?

A: SS2P4-M3/84A provides identical electrical and mechanical parameters but does not carry automotive-grade designation or AEC-Q101 qualification. Use of this part in automotive applications depends on specific design requirements and qualification standards mandated by the application. For designs requiring AEC-Q101 compliance, SS2P4HM3/84A is the appropriate substitute.

Q: Are all substitute parts in the same DO-220AA package?

A: Yes. All listed substitute parts use the DO-220AA (SMP) package with surface mount mounting type. Physical footprint and PCB layout compatibility are maintained across all substitutes.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching the following parameters: 40 V DC reverse voltage rating, 2 A average rectified current, 550 mV maximum forward voltage at 2 A, fast recovery speed characteristic (≤ 500ns), 150 µA reverse leakage current at 40 V, and 110 pF capacitance at 4V and 1MHz. All listed substitutes maintain these specifications.

Q: Is there a difference in forward voltage characteristics between the main part and substitutes?

A: No. All parts, including the main part SS2P4HM3/85A and both substitutes, specify identical maximum forward voltage of 550 mV at 2 A forward current.

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

A: The junction operating temperature range for SS2P4HM3/85A and all listed substitutes is -55°C to 150°C.

Q: Are all parts RoHS compliant?

A: Yes. SS2P4HM3/85A, SS2P4-M3/84A, and SS2P4HM3/84A are all ROHS3 compliant with REACH unaffected status.

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