SS5P9-M3/87A Equivalent & Substitute Parts

Part Overview

The SS5P9-M3/87A 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 component belongs to the eSMP® series and is classified as Active product status with ROHS3 compliance. Equivalent and substitute parts are identified to address supply chain requirements, packaging format preferences, and application-specific certifications such as automotive qualification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	90	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	880 mV @ 5 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	15	µA @ 90 V
Capacitance @ Vr, F	130	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	TO-277, 3-PowerDFN	—
Mounting Type	Surface Mount	—
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS5P9-M3/87A are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Vishay eSMP® Series): Substitute parts SS5P9-M3/86A, SS5P9HM3_A/H, and SS5P9HM3_A/I maintain identical electrical specifications across all critical parameters: 90 V reverse voltage, 5 A average rectified current, 880 mV forward voltage drop at 5 A, fast recovery speed, 15 µA reverse leakage current, and 130 pF capacitance. These parts differ only in packaging format (Tape & Reel versus Cut Tape & Digi-Reel®) and automotive qualification status. SS5P9HM3_A/H and SS5P9HM3_A/I carry AEC-Q101 automotive qualification, while SS5P9-M3/86A does not.

Manufacturer Recommended Substitute (Littelfuse DST580S): The DST580S is a cross-manufacturer alternative that operates at 80 V reverse voltage (10 V lower than the primary part) with identical 5 A current rating. This part exhibits lower forward voltage drop (720 mV versus 880 mV at 5 A) and higher reverse leakage current (400 µA versus 15 µA at rated voltage). The DST580S uses TO-277B package variant and is suitable only for applications where 80 V reverse voltage rating is sufficient.

Substitution eligibility is determined by:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed application requirement
Current - Average Rectified (Io): Must equal or exceed application requirement
Package / Case compatibility: TO-277 family packages are mechanically compatible
Operating Temperature range: Must encompass application operating conditions

Parameter Comparison

Parameter	SS5P9-M3/87A	SS5P9-M3/86A	SS5P9HM3_A/H	SS5P9HM3_A/I	DST580S
Manufacturer	Vishay	Vishay	Vishay	Vishay	Littelfuse
Voltage - DC Reverse (Vr) (Max)	90 V	90 V	90 V	90 V	80 V
Current - Average Rectified (Io)	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	720 mV @ 5 A
Speed	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Current - Reverse Leakage @ Vr	15 µA @ 90 V	15 µA @ 90 V	15 µA @ 90 V	15 µA @ 90 V	400 µA @ 80 V
Capacitance @ Vr, F	130 pF @ 4V	130 pF @ 4V	130 pF @ 4V	130 pF @ 4V	245 pF @ 5V
Operating Temperature - Junction	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C
Package / Case	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
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Qualification	—	—	AEC-Q101	AEC-Q101	—
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Parametric Equivalents: SS5P9-M3/86A, SS5P9HM3_A/H, and SS5P9HM3_A/I are direct electrical equivalents to the SS5P9-M3/87A. Selection among these three parts is determined by packaging format requirements and automotive qualification necessity. For applications requiring AEC-Q101 automotive qualification, SS5P9HM3_A/H or SS5P9HM3_A/I must be selected. For non-automotive applications, SS5P9-M3/86A or SS5P9-M3/87A are suitable. Packaging format selection (Tape & Reel versus Cut Tape & Digi-Reel®) depends on assembly line equipment and volume requirements.

Cross-Manufacturer Alternative: The Littelfuse DST580S is suitable only for applications where the 80 V reverse voltage rating is sufficient. This part exhibits superior forward voltage characteristics (720 mV versus 880 mV) but higher reverse leakage current (400 µA versus 15 µA). Applications requiring the full 90 V reverse voltage rating of the SS5P9-M3/87A cannot use the DST580S. All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can SS5P9-M3/86A be used as a direct replacement for SS5P9-M3/87A?

A: Yes. SS5P9-M3/86A is a parametric equivalent with identical electrical specifications: 90 V reverse voltage, 5 A current rating, 880 mV forward voltage drop, and 15 µA reverse leakage current. The only differences are packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and absence of automotive qualification. Mechanical compatibility is confirmed through identical TO-277 package classification.

Q: What is the difference between SS5P9HM3_A/H and SS5P9HM3_A/I?

A: Both parts are parametric equivalents with identical electrical specifications and AEC-Q101 automotive qualification. The difference is inventory availability: SS5P9HM3_A/H has 1,800 pieces in stock, while SS5P9HM3_A/I has 39,300 pieces in stock. Electrical performance and package specifications are identical.

Q: Can the Littelfuse DST580S replace the SS5P9-M3/87A in all applications?

A: No. The DST580S operates at 80 V reverse voltage, which is 10 V lower than the SS5P9-M3/87A. Substitution is valid only for applications where the circuit design accommodates 80 V maximum reverse voltage. Additionally, the DST580S exhibits higher reverse leakage current (400 µA versus 15 µA), which may affect circuit performance in low-leakage applications.

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

A: Yes. All substitute parts use TO-277 package classification with 3-PowerDFN configuration. Mechanical dimensions and pin assignments are compatible across the Vishay eSMP® series (SS5P9-M3/87A, SS5P9-M3/86A, SS5P9HM3_A/H, SS5P9HM3_A/I) and the Littelfuse DST580S (TO-277B variant). PCB layout modifications are not required.

Q: Which substitute part should be selected for automotive applications?

A: For automotive applications requiring AEC-Q101 qualification, select either SS5P9HM3_A/H or SS5P9HM3_A/I. Both parts carry AEC-Q101 certification and maintain identical electrical specifications to the primary part. SS5P9-M3/87A and SS5P9-M3/86A do not carry automotive qualification and are not suitable for automotive applications.

Q: What is the impact of forward voltage difference between SS5P9-M3/87A and DST580S?

A: The DST580S exhibits 160 mV lower forward voltage drop (720 mV versus 880 mV at 5 A). This results in reduced power dissipation and heat generation in the substitute part. Circuit designs dependent on specific forward voltage characteristics for voltage regulation or biasing must account for this 160 mV difference.

Q: Are packaging format differences between Tape & Reel and Cut Tape & Digi-Reel® electrically significant?

A: No. Packaging format differences are logistical and assembly-related only. Electrical specifications, performance characteristics, and reliability are identical. Selection depends on assembly equipment compatibility and volume requirements.

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