SS5P9HM3/87A Equivalent & Substitute Parts

Part Overview

The SS5P9HM3/87A is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 90 V DC reverse voltage and 5 A average rectified current in a surface mount TO-277A (SMPC) package. This part operates within the eSMP® series and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	90 V
Current - Average Rectified (Io)	5 A
Voltage - Forward (Vf) (Max) @ If	880 mV @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	15 µA @ 90 V
Package / Case	TO-277, 3-PowerDFN
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SS5P9HM3/87A is determined by the following critical parameters:

Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 90 V minimum
Current - Average Rectified (Io): 5 A
Voltage - Forward (Vf) (Max) @ If: 880 mV @ 5 A
Current - Reverse Leakage @ Vr: 15 µA @ 90 V
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters:

Package / Case: TO-277, 3-PowerDFN
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C ~ 150°C

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts that match all electrical and mechanical parameters with identical or superior specifications. These include SS5P9-M3/86A, SS5P9-M3/87A, SS5P9HM3_A/H, and SS5P9HM3_A/I. All are from the Vishay eSMP® series and maintain the same 90 V / 5 A rating.

Manufacturer Recommended Substitute: DST580S-A from Littelfuse Inc. operates at a reduced voltage rating of 80 V with equivalent current handling and is qualified for automotive applications per AEC-Q101.

Parameter Comparison

Parameter	SS5P9HM3/87A	SS5P9-M3/86A	SS5P9-M3/87A	SS5P9HM3_A/H	SS5P9HM3_A/I	DST580S-A
Manufacturer	Vishay	Vishay	Vishay	Vishay	Vishay	Littelfuse
Voltage - DC Reverse (Vr) (Max)	90 V	90 V	90 V	90 V	90 V	80 V
Current - Average Rectified (Io)	5 A	5 A	5 A	5 A	5 A	5 A
Voltage - Forward (Vf) (Max) @ If	880 mV @ 5 A	880 mV @ 5 A	880 mV @ 5 A	880 mV @ 5 A	880 mV @ 5 A	720 mV @ 5 A
Current - Reverse Leakage @ Vr	15 µA @ 90 V	15 µA @ 90 V	15 µA @ 90 V	15 µA @ 90 V	15 µA @ 90 V	400 µA @ 80 V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	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	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	Standard	Standard	Standard	AEC-Q101	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents):

SS5P9-M3/87A and SS5P9-M3/86A are direct parametric equivalents from Vishay's active product line. Both maintain identical electrical specifications (90 V / 5 A) and mechanical compatibility. SS5P9-M3/87A is available in higher inventory (18,300 pcs) and is recommended for standard applications requiring the full 90 V rating.

SS5P9HM3_A/H and SS5P9HM3_A/I are automotive-grade variants qualified to AEC-Q101. These parts are suitable for automotive and mission-critical applications. SS5P9HM3_A/I offers the highest inventory availability (39,300 pcs) among all substitutes.

Secondary Substitute (Voltage-Reduced Alternative):

DST580S-A from Littelfuse Inc. operates at 80 V maximum reverse voltage, representing a 10 V reduction from the original specification. This part is suitable only for applications where the circuit design operates below 80 V. The lower forward voltage drop (720 mV vs. 880 mV @ 5 A) may provide thermal benefits in power-dissipation-sensitive designs. DST580S-A is AEC-Q101 qualified and ROHS3 compliant.

Selection Criteria:

For direct replacement without circuit redesign, select from SS5P9-M3/87A, SS5P9-M3/86A, SS5P9HM3_A/H, or SS5P9HM3_A/I. For automotive applications, prioritize SS5P9HM3_A/I or SS5P9HM3_A/H. For non-automotive applications with standard requirements, SS5P9-M3/87A is the preferred choice based on active status and inventory availability.

DST580S-A is applicable only when circuit voltage margins permit operation below 80 V.

Frequently Asked Questions (FAQ)

Q: Can SS5P9-M3/87A directly replace SS5P9HM3/87A without circuit modification?

A: Yes. SS5P9-M3/87A is a parametric equivalent with identical electrical ratings (90 V / 5 A), forward voltage drop (880 mV @ 5 A), reverse leakage current (15 µA @ 90 V), and package configuration (TO-277, 3-PowerDFN). Both are surface mount devices with the same operating temperature range (-55°C ~ 150°C). The primary difference is product status: SS5P9HM3/87A is obsolete while SS5P9-M3/87A is active.

Q: What is the difference between SS5P9-M3/86A and SS5P9-M3/87A?

A: Both parts are parametric equivalents with identical electrical specifications and package type. The difference is in packaging format: SS5P9-M3/86A is supplied in Cut Tape (CT) & Digi-Reel®, while SS5P9-M3/87A is supplied in Tape & Reel (TR). Electrical performance and mechanical compatibility are equivalent.

Q: Are SS5P9HM3_A/H and SS5P9HM3_A/I suitable for automotive applications?

A: Yes. Both parts carry automotive-grade designation and are qualified to AEC-Q101. They maintain the same electrical specifications as the standard variants and are suitable for automotive and mission-critical applications requiring formal qualification.

Q: Can DST580S-A be used as a direct replacement?

A: DST580S-A is not a direct replacement. It operates at a maximum reverse voltage of 80 V compared to the original 90 V specification. Use DST580S-A only in applications where the circuit design operates below 80 V. The part offers a lower forward voltage drop (720 mV vs. 880 mV @ 5 A) and is AEC-Q101 qualified.

Q: What is the significance of the TO-277 package designation?

A: TO-277 is the mechanical package standard for all listed parts. The 3-PowerDFN variant indicates a three-terminal power dissipation optimized footprint suitable for surface mount assembly. All substitute parts use identical package geometry, ensuring PCB layout compatibility without redesign.

Q: Why is the original SS5P9HM3/87A classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured or supported by Vishay. Active equivalent parts from the same eSMP® series (SS5P9-M3/87A, SS5P9-M3/86A, SS5P9HM3_A/H, SS5P9HM3_A/I) provide continued design support and procurement availability.

Q: What is the difference in reverse leakage current between Vishay and Littelfuse parts?

A: Vishay parts (SS5P9 series) specify 15 µA @ 90 V reverse leakage, while DST580S-A specifies 400 µA @ 80 V. The higher leakage in the Littelfuse part is measured at a lower voltage (80 V vs. 90 V). This difference is significant in low-current or high-impedance circuit applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and are suitable for applications requiring RoHS compliance.

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