SS1P4L-M3/85A Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS1P4L-M3/85A is an active Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40 V DC reverse voltage and 1 A average rectified current. This component is packaged in the DO-220AA (SMP) surface mount configuration and belongs to the eSMP® series. The device is designed for fast recovery applications with switching speeds ≤ 500 ns at currents > 200 mA.

Equivalent and substitute parts are identified when alternative manufacturers offer Schottky diodes with matching or superior electrical specifications within the same voltage and current ratings, while maintaining compliance with applicable standards and regulatory requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	480	mV @ 1 A
Speed - Fast Recovery	≤ 500	ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	150	µA @ 40 V
Capacitance @ Vr, F	130	pF @ 4V, 1MHz
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SS1P4L-M3/85A is determined by equivalence in the following critical electrical parameters:

Reverse Voltage Rating (Vr): 40 V maximum
Average Rectified Current (Io): 1 A
Forward Voltage (Vf): ≤ 490 mV @ 1 A
Recovery Speed: Fast recovery ≤ 500 ns at > 200 mA
Reverse Leakage Current: ≤ 150 µA @ 40 V
Junction Temperature Range: Minimum -55°C to 150°C
Technology: Schottky diode
Compliance: ROHS3 compliant, MSL 1

Substitute parts must maintain these electrical specifications and regulatory compliance. Package differences (DO-220AA versus SOD-123W) represent mechanical variations that do not affect electrical substitution eligibility when board layout accommodates the alternative package footprint.

Parameter Comparison

Parameter	SS1P4L-M3/85A (Vishay)	PMEG4010ER,115 (Nexperia)	Match Status
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	Equivalent
Current - Average Rectified (Io)	1 A	1 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	480 mV @ 1 A	490 mV @ 1 A	Compatible
Speed - Fast Recovery	≤ 500 ns, > 200mA	≤ 500 ns, > 200mA	Equivalent
Current - Reverse Leakage @ Vr	150 µA @ 40 V	50 µA @ 40 V	Compatible (Lower)
Capacitance @ Vr, F	130 pF @ 4V, 1MHz	130 pF @ 1V, 1MHz	Compatible
Operating Temperature - Junction	-55°C to 150°C	150°C (Max)	Compatible
Technology	Schottky	Schottky	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	DO-220AA (SMP)	SOD-123W	Different
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

PMEG4010ER,115 (Nexperia USA Inc.) qualifies as a direct electrical substitute for the SS1P4L-M3/85A based on the following criteria:

Electrical Equivalence: Both devices meet the 40 V reverse voltage and 1 A average rectified current specifications. Forward voltage at 1 A differs by 10 mV (490 mV versus 480 mV), which remains within acceptable tolerance for Schottky diode applications.
Performance Advantage: The PMEG4010ER,115 exhibits lower reverse leakage current (50 µA versus 150 µA @ 40 V), indicating superior blocking characteristics.
Regulatory Compliance: Both parts are ROHS3 compliant, REACH unaffected, and classified under identical HTSUS code 8541.10.0080. Both carry MSL 1 (unlimited moisture sensitivity).
Product Status: Both components are active products with confirmed inventory availability.
Package Consideration: The PMEG4010ER,115 uses SOD-123W packaging instead of DO-220AA. This represents a mechanical difference requiring board layout verification. The SOD-123W package is a smaller surface mount configuration and must be confirmed compatible with the target PCB footprint and thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the PMEG4010ER,115 replace the SS1P4L-M3/85A in all applications?

A: Electrical substitution is valid based on matching voltage, current, and recovery speed specifications. However, the package change from DO-220AA to SOD-123W requires verification that the PCB layout accommodates the alternative footprint and that thermal dissipation requirements are met in the target application.

Q: What is the significance of the 10 mV difference in forward voltage?

A: The forward voltage difference (480 mV versus 490 mV @ 1 A) is within normal manufacturing tolerance for Schottky diodes and does not affect functional substitution. Both values remain within the specified maximum ratings for their respective parts.

Q: Why does the PMEG4010ER,115 have lower reverse leakage current?

A: Lower reverse leakage current (50 µA versus 150 µA @ 40 V) reflects manufacturing process differences between Nexperia and Vishay. This represents equivalent or superior performance and does not prevent substitution.

Q: Are there thermal differences between the two packages?

A: The DO-220AA and SOD-123W packages have different thermal characteristics. The specific thermal resistance (θJA) values are not provided in the input parameters. Thermal performance must be evaluated based on the target application's power dissipation and thermal environment requirements.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SS1P4L-M3/85A and PMEG4010ER,115 are ROHS3 compliant, REACH unaffected, and carry identical HTSUS classification. Both have MSL 1 rating (unlimited moisture sensitivity).

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Tape & Reel represent different supply formats for surface mount components. Tape & Reel (TR) is used for automated assembly processes, while Cut Tape (CT) is used for manual or lower-volume assembly. The electrical component itself is identical; the difference is in the delivery format and handling method.

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