SS3P4L-E3/86A Equivalent & Substitute Parts

Part Overview

The SS3P4L-E3/86A is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40 V DC reverse voltage and 3 A average rectified current in a surface mount TO-277A (SMPC) package. This part is classified as obsolete and has been superseded by active alternatives within the eSMP® series and related product lines. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	470 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	250	µA @ 40 V
Operating Temperature - Junction	-55 to 150	°C
Package / Case	TO-277, 3-PowerDFN	-
Mounting Type	Surface Mount	-
Technology	Schottky	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the SS3P4L-E3/86A is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 470 mV @ 3 A (with tolerance for minor variations)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 250 µA @ 40 V (with tolerance for minor variations)
Operating Temperature - Junction: -55°C to 150°C minimum
Package / Case: TO-277, 3-PowerDFN
Mounting Type: Surface Mount
Technology: Schottky
RoHS Status: ROHS3 Compliant

Substitute Parts Identified:

Group 1: Vishay eSMP® Series (Active Status)

SS3P4L-M3/86A
SS3P4L-M3/87A

Group 2: Vishay Automotive Grade (Active Status, AEC-Q101 Qualified)

SS3P4LHM3_A/H
SS3P4LHM3_A/I

Group 3: Nexperia Cross-Manufacturer Alternative (Not For New Designs)

PMEG040V030EPDZ

All substitute parts maintain the core electrical specifications and package compatibility required for direct functional replacement.

Parameter Comparison

Parameter	SS3P4L-E3/86A	SS3P4L-M3/86A	SS3P4L-M3/87A	SS3P4LHM3_A/H	SS3P4LHM3_A/I	PMEG040V030EPDZ
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	470 mV @ 3 A	470 mV @ 3 A	470 mV @ 3 A	470 mV @ 3 A	470 mV @ 3 A	490 mV @ 3 A
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)
Current - Reverse Leakage @ Vr	250 µA @ 40 V	250 µA @ 40 V	250 µA @ 40 V	250 µA @ 40 V	250 µA @ 40 V	120 µA @ 40 V
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	Max 175°C
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
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Product Status	Obsolete	Active	Active	Active	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Standard	Standard	Standard	Automotive	Automotive	Automotive
Qualification	-	-	-	AEC-Q101	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

For Ongoing Production (Preferred Substitutes):

The SS3P4L-M3/86A and SS3P4L-M3/87A are direct parametric equivalents manufactured by Vishay in the active eSMP® series. Both parts maintain identical electrical specifications and package compatibility with the obsolete SS3P4L-E3/86A. These parts are available in Tape & Reel packaging and carry active product status, ensuring long-term supply chain viability.

For Automotive Applications:

The SS3P4LHM3_A/H and SS3P4LHM3_A/I are automotive-grade alternatives qualified to AEC-Q101 standard. These parts are suitable for applications requiring automotive-level reliability and traceability. The SS3P4LHM3_A/I offers the highest inventory availability (13,200 pieces) and is available in Cut Tape and Digi-Reel® packaging options in addition to standard Tape & Reel.

For Cross-Manufacturer Flexibility:

The PMEG040V030EPDZ from Nexperia USA Inc. provides a cross-manufacturer alternative with equivalent electrical performance. This part carries AEC-Q101 automotive qualification and exhibits lower reverse leakage current (120 µA versus 250 µA). However, this part is classified as "Not For New Designs" and should be reserved for legacy system support or applications where Nexperia supply chain integration is required.

Selection Basis:

All substitute parts maintain the 40 V / 3 A electrical specification
All substitute parts are housed in the same TO-277, 3-PowerDFN package
All substitute parts are RoHS3 compliant
Vishay eSMP® series parts (SS3P4L-M3/86A, SS3P4L-M3/87A) provide direct replacement with active product status
Automotive-grade parts (SS3P4LHM3_A/H, SS3P4LHM3_A/I) add AEC-Q101 qualification for regulated applications
Nexperia alternative (PMEG040V030EPDZ) is available for cross-manufacturer sourcing strategies

Frequently Asked Questions (FAQ)

Q: Can SS3P4L-M3/86A directly replace SS3P4L-E3/86A in existing designs?

A: Yes. The SS3P4L-M3/86A is a parametric equivalent with identical electrical specifications (40 V, 3 A, 470 mV forward voltage, fast recovery ≤ 500ns) and the same TO-277, 3-PowerDFN package. The primary difference is product status: SS3P4L-E3/86A is obsolete while SS3P4L-M3/86A is active. The packaging format differs (SS3P4L-E3/86A is not specified; SS3P4L-M3/86A is Tape & Reel), but this does not affect functional compatibility.

Q: What is the difference between SS3P4L-M3/86A and SS3P4L-M3/87A?

A: Both parts are parametric equivalents with identical electrical specifications and package type. The difference is in the manufacturing date code designation (86A versus 87A). Both are active Vishay eSMP® series products suitable for direct substitution of the obsolete SS3P4L-E3/86A.

Q: Should I use the automotive-grade SS3P4LHM3_A/H or SS3P4LHM3_A/I for non-automotive applications?

A: The automotive-grade parts (SS3P4LHM3_A/H and SS3P4LHM3_A/I) are qualified to AEC-Q101 standard and carry automotive-level reliability assurance. These parts are suitable for any application requiring equivalent or higher reliability standards. The primary advantage is enhanced qualification documentation and traceability. For standard industrial applications, the eSMP® series parts (SS3P4L-M3/86A, SS3P4L-M3/87A) are functionally equivalent and appropriate.

Q: What is the difference between SS3P4LHM3_A/H and SS3P4LHM3_A/I?

A: Both parts are automotive-grade, AEC-Q101 qualified equivalents with identical electrical specifications. The difference is in packaging format: SS3P4LHM3_A/H is supplied in Tape & Reel (TR), while SS3P4LHM3_A/I is available in Cut Tape (CT) and Digi-Reel® formats. Electrical performance and package type (TO-277, 3-PowerDFN) are identical. Selection depends on assembly line requirements and tape format compatibility.

Q: Can PMEG040V030EPDZ from Nexperia replace the Vishay parts?

A: Yes, the PMEG040V030EPDZ is a functional equivalent with the same 40 V / 3 A rating and TO-277, 3-PowerDFN package. However, this part is classified as "Not For New Designs" by Nexperia. It should be used only for legacy system support or when cross-manufacturer sourcing is required. The PMEG040V030EPDZ exhibits lower reverse leakage current (120 µA versus 250 µA) and slightly higher forward voltage (490 mV versus 470 mV), which are within acceptable tolerance for most applications but should be verified in thermal and efficiency-critical designs.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (SS3P4L-M3/86A, SS3P4L-M3/87A, SS3P4LHM3_A/H, SS3P4LHM3_A/I, and PMEG040V030EPDZ) are RoHS3 compliant and REACH unaffected, matching the compliance status of the original SS3P4L-E3/86A.

Q: What is the maximum operating junction temperature for each substitute?

A: The Vishay parts (SS3P4L-E3/86A, SS3P4L-M3/86A, SS3P4L-M3/87A, SS3P4LHM3_A/H, SS3P4LHM3_A/I) are rated for -55°C to 150°C junction temperature. The Nexperia PMEG040V030EPDZ has a maximum junction temperature of 175°C, providing higher thermal margin. For applications operating near the 150°C limit, the PMEG040V030EPDZ offers additional thermal headroom.

Q: Which substitute part has the best inventory availability?

A: The SS3P4LHM3_A/I has the highest inventory availability at 13,200 pieces. The SS3P4LHM3_A/H has 6,800 pieces available. The SS3P4L-M3/86A has 1,703 pieces, and the PMEG040V030EPDZ has 1,094 pieces. For high-volume production requirements, the SS3P4LHM3_A/I is the recommended choice based on supply availability.

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