SS12P3LHM3_A/H Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS12P3LHM3_A/H is an active Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 30V DC reverse voltage and 12A average rectified current in a surface mount TO-277A (SMPC) package. This component is designed for fast recovery applications with automotive-grade qualification (AEC-Q101) and ROHS3 compliance. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or inventory requirements necessitate alternative sourcing from qualified manufacturers while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	12	A
Voltage - Forward (Vf) (Max) @ If	560 mV @ 12 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	1 mA @ 20 V	mA
Capacitance @ Vr, F	930pF @ 4V, 1MHz	pF
Package / Case	TO-277, 3-PowerDFN	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS12P3LHM3_A/H are classified based on electrical parameter compatibility and mechanical package equivalence. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): 30V minimum
Current - Average Rectified (Io): 12A minimum
Package / Case: TO-277, 3-PowerDFN surface mount configuration
Technology: Schottky diode
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Compliance: ROHS3, AEC-Q101 automotive qualification

Parametric Equivalent Classification: Parts meeting or exceeding all critical electrical parameters with identical package specifications are classified as parametric equivalents. The SS12P3L-M3/86A meets this classification with identical voltage, current, forward voltage, speed, package, and temperature range specifications.

Manufacturer Recommended Classification: The PMEG030V030EPDZ from Nexperia USA Inc. is listed as a manufacturer-recommended alternative. This part maintains the 30V reverse voltage rating and fast recovery speed characteristics but operates at a reduced current rating of 3A, representing a functional alternative for applications with lower current requirements within the same voltage class and package family.

Parameter Comparison

Parameter	SS12P3LHM3_A/H (Main)	SS12P3L-M3/86A (Parametric Equivalent)	PMEG030V030EPDZ (Manufacturer Recommended)
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Nexperia USA Inc.
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V
Current - Average Rectified (Io)	12 A	12 A	3 A
Voltage - Forward (Vf) (Max) @ If	560 mV @ 12 A	560 mV @ 12 A	450 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 20 V	1 mA @ 30 V	150 µA @ 30 V
Capacitance @ Vr, F	930pF @ 4V, 1MHz	930pF @ 4V, 1MHz	495pF @ 1V, 1MHz
Package / Case	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN
Supplier Device Package	TO-277A (SMPC)	TO-277A (SMPC)	CFP15
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	Max 175°C
Grade	Automotive	Not specified	Automotive
Qualification	AEC-Q101	Not specified	AEC-Q101
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

SS12P3L-M3/86A (Parametric Equivalent): The SS12P3L-M3/86A is a direct parametric equivalent suitable for one-to-one replacement in applications requiring the full 12A current rating. Both parts are manufactured by Vishay General Semiconductor - Diodes Division, share identical electrical specifications (30V, 12A, 560mV forward voltage), and are packaged in the same TO-277A (SMPC) configuration. Both components maintain ROHS3 compliance and MSL 1 rating. This substitute is appropriate for applications where the original part number is unavailable and equivalent performance is required.

PMEG030V030EPDZ (Manufacturer Recommended): The PMEG030V030EPDZ from Nexperia USA Inc. is a manufacturer-recommended alternative for applications operating at reduced current levels (3A maximum versus 12A). This part maintains the 30V reverse voltage rating, fast recovery speed characteristic, and automotive-grade AEC-Q101 qualification. The PMEG030V030EPDZ exhibits superior reverse leakage characteristics (150µA @ 30V versus 1mA @ 20V) and lower forward voltage (450mV @ 3A). The CFP15 package designation differs from the TO-277A (SMPC) supplier package, though both are classified as TO-277, 3-PowerDFN case styles. This substitute is suitable only for applications where the 3A current rating is sufficient for the circuit design.

Compliance and Qualification: All three parts maintain ROHS3 compliance, MSL 1 rating, and active product status. The SS12P3LHM3_A/H and PMEG030V030EPDZ both carry automotive-grade designation with AEC-Q101 qualification. Selection should prioritize current requirement compatibility and application-specific thermal operating range requirements.

Frequently Asked Questions (FAQ)

Q: Can SS12P3L-M3/86A replace SS12P3LHM3_A/H in all applications?

A: Yes, the SS12P3L-M3/86A is a parametric equivalent with identical electrical specifications (30V, 12A, 560mV forward voltage) and package configuration (TO-277A SMPC). Both parts are manufactured by Vishay and maintain equivalent performance characteristics for direct substitution.

Q: What is the primary difference between SS12P3LHM3_A/H and PMEG030V030EPDZ?

A: The primary difference is current rating. The SS12P3LHM3_A/H is rated for 12A average rectified current, while the PMEG030V030EPDZ is rated for 3A. Both maintain 30V reverse voltage rating and fast recovery speed. The PMEG030V030EPDZ exhibits lower reverse leakage current (150µA @ 30V) and lower forward voltage (450mV @ 3A). The PMEG030V030EPDZ is suitable only for applications with 3A or lower current requirements.

Q: Are all three parts automotive-qualified?

A: The SS12P3LHM3_A/H and PMEG030V030EPDZ both carry automotive-grade designation with AEC-Q101 qualification. The SS12P3L-M3/86A does not specify automotive grade or AEC-Q101 qualification in the provided data. Automotive applications requiring explicit AEC-Q101 certification should use SS12P3LHM3_A/H or PMEG030V030EPDZ.

Q: What is the difference between TO-277A (SMPC) and CFP15 package designations?

A: Both designations refer to the same TO-277, 3-PowerDFN case style. TO-277A (SMPC) is the Vishay supplier device package designation, while CFP15 is the Nexperia supplier device package designation. The physical package and pin configuration are equivalent for surface mount assembly.

Q: Can PMEG030V030EPDZ be used in a 12A application?

A: No. The PMEG030V030EPDZ is rated for maximum 3A average rectified current. Using this part in a 12A application would exceed its current rating and result in component failure or degraded performance. The SS12P3L-M3/86A or SS12P3LHM3_A/H must be used for 12A applications.

Q: Do all three parts have the same moisture sensitivity level?

A: Yes. All three parts (SS12P3LHM3_A/H, SS12P3L-M3/86A, and PMEG030V030EPDZ) have MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture bake requirements.

Q: What is the operating temperature range difference between the parts?

A: The SS12P3LHM3_A/H and SS12P3L-M3/86A both operate from -55°C to 150°C junction temperature. The PMEG030V030EPDZ has a maximum junction temperature of 175°C, providing a higher thermal ceiling. Applications requiring operation above 150°C junction temperature must use the PMEG030V030EPDZ.

Q: Are all parts ROHS3 compliant?

A: Yes. All three parts (SS12P3LHM3_A/H, SS12P3L-M3/86A, and PMEG030V030EPDZ) are ROHS3 compliant and REACH unaffected.

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