SS10P4HM3_A/I Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS10P4HM3_A/I is a 40V, 10A Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, housed in a TO-277A (SMPC) surface mount package. This component is classified as Active and carries automotive-grade qualification (AEC-Q101), making it suitable for demanding applications requiring fast recovery characteristics and low forward voltage drop.

Substitute parts are identified when electrical parameters and mechanical packaging remain compatible within the specified operating range. The availability of equivalent alternatives ensures design flexibility and supply chain continuity for applications utilizing this diode topology.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	10	A
Voltage - Forward (Vf) (Max) @ If	560 mV @ 10 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	800	µA @ 40 V
Capacitance @ Vr, F	750	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Package / Case	TO-277, 3-PowerDFN	—
Mounting Type	Surface Mount	—
Technology	Schottky	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS10P4HM3_A/I are classified based on electrical parameter equivalence and mechanical compatibility. The substitution logic is determined by the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 10 A
Voltage - Forward (Vf) (Max) @ If: 560 mV @ 10 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 800 µA @ 40 V
Operating Temperature - Junction: -55°C to 150°C

Mechanical Compatibility Criteria:

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

Compliance Criteria:

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

Parts are grouped into two categories:

Parametric Equivalents: Parts that match all electrical parameters and mechanical specifications, differing only in packaging format (Tape & Reel vs. Cut Tape & Digi-Reel®) or internal series designation.

Manufacturer Recommended Equivalent: Parts that maintain the same voltage and package specifications but operate at reduced current ratings (5A vs. 10A), suitable for applications with lower current requirements.

Parameter Comparison

Parameter	SS10P4HM3_A/I	SS10P4-M3/86A	SS10P4-M3/87A	SS10P4HM3_A/H	FSV540
Manufacturer	Vishay	Vishay	Vishay	Vishay	onsemi
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	10 A	10 A	10 A	10 A	5 A
Voltage - Forward (Vf) (Max) @ If	560 mV @ 10 A	560 mV @ 10 A	560 mV @ 10 A	560 mV @ 10 A	520 mV @ 5 A
Speed	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Current - Reverse Leakage @ Vr	800 µA @ 40 V	800 µA @ 40 V	800 µA @ 40 V	800 µA @ 40 V	250 µA @ 40 V
Capacitance @ Vr, F	750 pF @ 4V, 1MHz	750 pF @ 4V, 1MHz	Not Specified	750 pF @ 4V, 1MHz	730 pF @ 0V, 1MHz
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
Grade	Automotive	Not Specified	Not Specified	Automotive	Not Specified
Qualification	AEC-Q101	Not Specified	Not Specified	AEC-Q101	Not Specified
Product Status	Active	Active	Active	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Parametric Equivalents (Full Substitution):

SS10P4-M3/86A, SS10P4-M3/87A, and SS10P4HM3_A/H are direct parametric equivalents to the SS10P4HM3_A/I. These parts maintain identical electrical specifications across all critical parameters: 40V reverse voltage, 10A average rectified current, 560mV forward voltage drop at 10A, and fast recovery characteristics. All three parts are classified as Active and comply with ROHS3 and MSL 1 requirements.

SS10P4HM3_A/H carries automotive-grade qualification (AEC-Q101) identical to the main part, making it the preferred substitute for automotive applications. SS10P4-M3/86A and SS10P4-M3/87A differ only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and series designation (eSMP® series), with no impact on electrical performance or functional compatibility.

Manufacturer Recommended Equivalent (Reduced Current Rating):

FSV540 (onsemi) is classified as a manufacturer-recommended equivalent but operates at a reduced current rating of 5A versus the 10A specification of the main part. This part maintains the 40V reverse voltage rating and fast recovery characteristics. The FSV540 is designated as "Not For New Designs," indicating it is retained for legacy support only. The lower reverse leakage current (250µA versus 800µA) and slightly lower forward voltage (520mV @ 5A) represent performance improvements in specific parameters but do not offset the current rating limitation.

FSV540 is suitable only for applications where the circuit current requirement does not exceed 5A and where legacy component support is acceptable.

Compliance and Certification:

All parametric equivalents maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity classification. Automotive-grade qualification (AEC-Q101) is present in the main part and SS10P4HM3_A/H, providing assurance for automotive applications. Selection between parametric equivalents should prioritize automotive qualification status when application requirements mandate it.

Frequently Asked Questions (FAQ)

Q: Can SS10P4-M3/86A be used as a direct replacement for SS10P4HM3_A/I?

A: Yes. SS10P4-M3/86A is a parametric equivalent with identical electrical specifications: 40V reverse voltage, 10A average rectified current, 560mV forward voltage drop at 10A, and fast recovery characteristics. The difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Both parts are Active status and ROHS3 compliant. For automotive applications, verify that the absence of explicit AEC-Q101 qualification in the SS10P4-M3/86A datasheet does not conflict with application requirements.

Q: What is the difference between SS10P4-M3/87A and SS10P4-M3/86A?

A: Both parts are parametric equivalents with identical electrical specifications and the same 10A current rating. The primary difference is packaging format and series designation (eSMP® series). SS10P4-M3/87A is supplied in Tape & Reel format, while SS10P4-M3/86A is available in Cut Tape & Digi-Reel® format. Electrical performance and mechanical compatibility are equivalent.

Q: Can FSV540 replace the SS10P4HM3_A/I in all applications?

A: No. FSV540 operates at a maximum average rectified current of 5A, compared to the 10A rating of SS10P4HM3_A/I. FSV540 is suitable only for applications where circuit current does not exceed 5A. Additionally, FSV540 is designated "Not For New Designs," indicating it is available for legacy support only. For new designs, parametric equivalents SS10P4-M3/86A, SS10P4-M3/87A, or SS10P4HM3_A/H are recommended.

Q: Is SS10P4HM3_A/H suitable for automotive applications?

A: Yes. SS10P4HM3_A/H carries automotive-grade qualification (AEC-Q101) and maintains all electrical specifications identical to SS10P4HM3_A/I: 40V reverse voltage, 10A average rectified current, 560mV forward voltage drop at 10A, and fast recovery characteristics. It is classified as Active and ROHS3 compliant, making it suitable for automotive applications requiring AEC-Q101 certification.

Q: Are all substitute parts compatible with the TO-277A (SMPC) package footprint?

A: Yes. All substitute parts listed—SS10P4-M3/86A, SS10P4-M3/87A, SS10P4HM3_A/H, and FSV540—use the TO-277, 3-PowerDFN package with TO-277A (SMPC) supplier device package designation. All are surface mount components with identical mechanical compatibility and PCB footprint requirements.

Q: What is the significance of the eSMP® series designation in SS10P4-M3/86A and SS10P4-M3/87A?

A: eSMP® is a Vishay product series designation indicating enhanced surface mount package technology. The eSMP® designation does not alter electrical performance or functional compatibility. Parts with and without this designation maintain identical electrical specifications and are mechanically compatible.

Q: Do all substitute parts meet ROHS3 compliance?

A: Yes. All substitute parts listed—SS10P4-M3/86A, SS10P4-M3/87A, SS10P4HM3_A/H, and FSV540—are ROHS3 compliant. All parts also carry MSL 1 (Unlimited) moisture sensitivity classification, indicating no moisture sensitivity restrictions during storage or handling.

Q: What is the impact of different reverse leakage current specifications among substitute parts?

A: Reverse leakage current varies among substitutes: SS10P4HM3_A/I, SS10P4-M3/86A, SS10P4-M3/87A, and SS10P4HM3_A/H specify 800µA @ 40V, while FSV540 specifies 250µA @ 40V. Lower reverse leakage current (FSV540) represents improved performance in this parameter but does not affect functional compatibility for applications designed around the 800µA specification. Applications sensitive to reverse leakage current should select parts with specifications matching circuit requirements.

Q: Can capacitance differences between substitute parts affect circuit performance?

A: Capacitance specifications are provided for SS10P4HM3_A/I, SS10P4-M3/86A, SS10P4HM3_A/H (750pF @ 4V, 1MHz), and FSV540 (730pF @ 0V, 1MHz). SS10P4-M3/87A does not specify capacitance. Capacitance differences are minor and do not affect functional compatibility in standard rectifier applications. Applications with specific capacitance requirements should verify that selected parts meet those specifications.

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