SS1P5L-E3/84A Equivalent & Substitute Parts

Part Overview

The SS1P5L-E3/84A is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V DC reverse voltage and 1 A average rectified current in a DO-220AA surface mount package. This part is classified as obsolete and has been superseded by active production alternatives within the eSMP® series. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and legacy system support.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	590 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 50 V
Package / Case	DO-220AA
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SS1P5L-E3/84A is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V (all substitutes match)
Current - Average Rectified (Io): 1 A (all substitutes match)
Voltage - Forward (Vf) (Max) @ If: 590 mV @ 1 A (primary group) or 680 mV @ 1 A (alternative group)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (all substitutes match)
Current - Reverse Leakage @ Vr: 100 µA @ 50 V or 150 µA @ 50 V (all substitutes within acceptable range)
Operating Temperature - Junction: -55°C ~ 150°C (all substitutes match)

Mechanical Compatibility Criteria:

Package / Case: DO-220AA (primary group) or MicroSMP/DO-219AD (alternative group)
Mounting Type: Surface Mount (all substitutes match)

Compliance Criteria:

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

Substitutes are grouped into two categories: parametric equivalents with identical package (DO-220AA) and direct manufacturer alternatives with different package (MicroSMP). Selection depends on PCB layout constraints and packaging requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	Reverse Leakage @ Vr	Package	Packaging Type	Inventory (Pcs)
SS1P5L-E3/84A	Vishay	Obsolete	50 V	1 A	590 mV @ 1 A	100 µA @ 50 V	DO-220AA	Cut Tape (CT)	30100
SS1P5L-M3/84A	Vishay	Active	50 V	1 A	590 mV @ 1 A	100 µA @ 50 V	DO-220AA	Tape & Reel (TR)	30300
SS1P5L-M3/85A	Vishay	Active	50 V	1 A	590 mV @ 1 A	100 µA @ 50 V	DO-220AA	Tape & Reel (TR)	1057
SS1P5LHM3/84A	Vishay	Active	50 V	1 A	590 mV @ 1 A	100 µA @ 50 V	DO-220AA	Tape & Reel (TR)	4400
SS1P5LHM3/85A	Vishay	Active	50 V	1 A	590 mV @ 1 A	100 µA @ 50 V	DO-220AA	Tape & Reel (TR)	973
MSS1P5-M3/89A	Vishay	Active	50 V	1 A	680 mV @ 1 A	150 µA @ 50 V	MicroSMP	Cut Tape (CT) & Digi-Reel®	157601

Engineering Selection Recommendations

Primary Substitutes (Parametric Equivalents - DO-220AA Package):

The parts SS1P5L-M3/84A, SS1P5L-M3/85A, SS1P5LHM3/84A, and SS1P5LHM3/85A are parametric equivalents to the obsolete SS1P5L-E3/84A. All maintain identical electrical specifications: 50 V reverse voltage, 1 A average rectified current, 590 mV forward voltage drop at 1 A, and fast recovery characteristics. These parts are active production items with ROHS3 compliance and unlimited moisture sensitivity rating.

SS1P5L-M3/84A and SS1P5LHM3/84A are recommended as direct replacements due to highest inventory availability (30300 and 4400 units respectively) and active product status. The SS1P5LHM3/84A and SS1P5LHM3/85A variants include automotive-grade qualification (AEC-Q101) and are suitable for applications requiring automotive reliability standards.

Alternative Substitute (Different Package - MicroSMP):

The MSS1P5-M3/89A is a direct manufacturer alternative with identical voltage and current ratings but features a MicroSMP (DO-219AD) package instead of DO-220AA. This part exhibits slightly higher forward voltage (680 mV vs. 590 mV) and reverse leakage current (150 µA vs. 100 µA), remaining within acceptable operating margins. MSS1P5-M3/89A is suitable only when PCB layout accommodates the smaller MicroSMP footprint and the higher forward voltage drop is acceptable for the application. This part has the highest inventory availability (157601 units).

Selection Criteria:

For direct pin-compatible replacement with identical electrical performance: select SS1P5L-M3/84A
For automotive applications requiring AEC-Q101 qualification: select SS1P5LHM3/84A
For space-constrained designs accepting higher forward voltage: select MSS1P5-M3/89A
All substitutes maintain RoHS3 compliance and unlimited moisture sensitivity rating

Frequently Asked Questions (FAQ)

Q: Can SS1P5L-M3/84A directly replace SS1P5L-E3/84A?

A: Yes. SS1P5L-M3/84A is a parametric equivalent with identical electrical specifications (50 V, 1 A, 590 mV forward voltage) and the same DO-220AA package. The primary difference is product status (active vs. obsolete) and packaging format (Tape & Reel vs. Cut Tape). Electrical and mechanical compatibility is complete.

Q: What is the difference between SS1P5L-M3/84A and SS1P5LHM3/84A?

A: Both parts share identical electrical specifications and DO-220AA packaging. SS1P5LHM3/84A includes automotive-grade qualification (AEC-Q101) and is designated for automotive applications. Selection depends on application requirements; non-automotive designs may use either part.

Q: Why does MSS1P5-M3/89A have different electrical specifications?

A: MSS1P5-M3/89A uses a different package (MicroSMP vs. DO-220AA), which results in different forward voltage (680 mV vs. 590 mV) and reverse leakage characteristics (150 µA vs. 100 µA). These differences are inherent to the package design. This part is suitable only when the higher forward voltage drop and leakage current are acceptable for the circuit design.

Q: Is MSS1P5-M3/89A compatible with existing PCB layouts designed for SS1P5L-E3/84A?

A: No. MSS1P5-M3/89A uses MicroSMP (DO-219AD) package, which has a different footprint than DO-220AA. PCB redesign is required. Use this part only for new designs or when PCB layout can be modified.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (SS1P5L-M3/84A, SS1P5L-M3/85A, SS1P5LHM3/84A, SS1P5LHM3/85A, and MSS1P5-M3/89A) are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: What is the difference between the /84A and /85A variants?

A: Both SS1P5L-M3/84A and SS1P5L-M3/85A are parametric equivalents with identical electrical specifications. The suffix difference (/84A vs. /85A) reflects manufacturing date codes or internal Vishay classification. Electrical performance and compatibility are equivalent.

Q: Which substitute has the best inventory availability?

A: MSS1P5-M3/89A has the highest inventory (157601 units). Among DO-220AA package variants, SS1P5L-M3/84A has the highest availability (30300 units).

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