SS15HE3_A/I Equivalent & Substitute Parts

Part Overview

The SS15HE3_A/I 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 surface mount DO-214AC (SMA) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and production continuity. The part carries automotive-grade qualification (AEC-Q101) and is ROHS3 compliant, making it suitable for automotive and industrial applications requiring fast recovery rectification.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 50 V
Technology	Schottky
Package / Case	DO-214AC, SMA
Operating Temperature - Junction	-65°C ~ 150°C
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SS15HE3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 750 mV @ 1 A (or lower)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case: DO-214AC, SMA
Operating Temperature - Junction: -65°C ~ 150°C
Technology: Schottky

Substitute Categories:

Direct Manufacturer Equivalent (Packaging Variant): SS15HE3_B/I is an identical electrical specification variant differing only in packaging format (Tape & Reel), with active product status.

Parametric Equivalents (Vishay General Semiconductor - Diodes Division): B150-E3/5AT, B150-E3/61T, B150-M3/5AT, B150-M3/61T, SS15-E3/5AT, SS15-E3/61T, SS15-M3/5AT, and SS15-M3/61T meet all electrical specifications and package requirements. These parts differ in packaging format (Tape & Reel or Cut Tape & Digi-Reel) and internal manufacturing codes. All maintain active product status.

Manufacturer-Recommended Equivalent (Alternative Supplier): B150-13-F (Diodes Incorporated) meets the core electrical specifications with minor parameter variations: forward voltage of 700 mV @ 1 A (lower than 750 mV specification) and reverse leakage of 500 µA @ 50 V (higher than 200 µA specification). This part is from an alternative manufacturer and carries active product status with higher inventory availability.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Temp Range	Product Status	Inventory
SS15HE3_A/I	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Discontinued	5100 Pcs
SS15HE3_B/I	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	744 Pcs
B150-E3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	804 Pcs
B150-E3/61T	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	10972 Pcs
B150-M3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	787 Pcs
B150-M3/61T	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	15671 Pcs
SS15-E3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	5225 Pcs
SS15-E3/61T	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	18200 Pcs
SS15-M3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	1098 Pcs
SS15-M3/61T	Vishay	50 V	1 A	750 mV @ 1 A	≤ 500ns	200 µA @ 40 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	756 Pcs
B150-13-F	Diodes Incorporated	50 V	1 A	700 mV @ 1 A	≤ 500ns	500 µA @ 50 V	DO-214AC (SMA)	-65°C ~ 150°C	Active	25400 Pcs

Engineering Selection Recommendations

Primary Selection Path:

For direct replacement of the discontinued SS15HE3_A/I, select SS15HE3_B/I from Vishay General Semiconductor - Diodes Division. This part maintains identical electrical specifications and automotive-grade AEC-Q101 qualification. The only difference is packaging format (Tape & Reel versus the original format). This part is active and maintains full compliance with ROHS3 and REACH requirements.

Secondary Selection Path (Vishay Equivalents):

The following Vishay parts provide complete electrical equivalence and are suitable for direct substitution:

SS15-E3/61T (highest inventory: 18,200 Pcs)
B150-E3/61T (high inventory: 10,972 Pcs)
B150-M3/61T (high inventory: 15,671 Pcs)

All three maintain identical electrical specifications, automotive qualification, and compliance certifications. Selection among these should be based on packaging format requirements (Tape & Reel or Cut Tape & Digi-Reel) and inventory availability.

Alternative Supplier Selection:

B150-13-F (Diodes Incorporated) is suitable for applications where forward voltage reduction (700 mV versus 750 mV) is acceptable and where higher reverse leakage current (500 µA versus 200 µA) does not impact circuit performance. This part offers the highest inventory availability (25,400 Pcs) and active product status. Electrical performance remains within the 50 V / 1 A / fast recovery specifications. Verify circuit design tolerance for the specified parameter variations before implementation.

Compliance Verification:

All recommended substitutes maintain ROHS3 compliance, REACH unaffected status, and automotive-grade qualification (AEC-Q101 for Vishay parts). Moisture sensitivity level remains MSL 1 (Unlimited) across all options.

Frequently Asked Questions (FAQ)

Q: Can SS15HE3_B/I be used as a direct replacement for SS15HE3_A/I?

A: Yes. SS15HE3_B/I is electrically identical to SS15HE3_A/I with all specifications matching: 50 V reverse voltage, 1 A average rectified current, 750 mV forward voltage at 1 A, and fast recovery characteristics. The only difference is packaging format (Tape & Reel). Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance.

Q: What is the difference between the various Vishay part numbers (SS15 versus B150 series)?

A: Both SS15 and B150 series are Schottky rectifier diodes from Vishay with identical electrical specifications for the 50 V / 1 A rating. The designations represent different product lines within Vishay's portfolio. The suffix codes (E3, M3, 5AT, 61T) indicate manufacturing process variants and packaging formats. All maintain equivalent electrical performance.

Q: Can B150-13-F from Diodes Incorporated be used instead of the Vishay parts?

A: B150-13-F is electrically compatible for most applications. It meets the 50 V / 1 A / fast recovery core specifications and operates across the same temperature range (-65°C to 150°C). However, it differs in two parameters: forward voltage is 700 mV (lower than 750 mV) and reverse leakage is 500 µA (higher than 200 µA). Verify that your circuit design tolerates these variations before substitution.

Q: What packaging formats are available for these substitute parts?

A: Substitute parts are available in two packaging formats: Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel. All parts use the same DO-214AC (SMA) surface mount package. Selection of packaging format depends on your assembly process requirements. Tape & Reel format is standard for automated pick-and-place assembly; Cut Tape & Digi-Reel is suitable for lower-volume or mixed-component assembly.

Q: Are all substitute parts automotive-grade qualified?

A: Vishay parts (SS15HE3_B/I, B150 series, SS15 series) carry AEC-Q101 automotive qualification. B150-13-F from Diodes Incorporated does not specify AEC-Q101 qualification in the provided data. For automotive applications requiring AEC-Q101 certification, use Vishay-manufactured substitutes.

Q: What is the difference between SS15-M3/5AT and SS15-E3/5AT?

A: Both parts meet identical electrical specifications for 50 V / 1 A operation. The M3 and E3 designations represent different manufacturing process codes from Vishay. The M3 variant specifies reverse leakage at 40 V (200 µA @ 40 V) while E3 specifies at 50 V (200 µA @ 50 V). Both are functionally equivalent for circuit applications.

Q: Which substitute part has the best inventory availability?

A: B150-13-F from Diodes Incorporated has the highest inventory (25,400 Pcs). Among Vishay parts, SS15-E3/61T offers the highest availability (18,200 Pcs), followed by B150-M3/61T (15,671 Pcs).

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

A: Yes. All substitute parts listed carry MSL 1 (Unlimited) moisture sensitivity level, matching the original SS15HE3_A/I specification. This indicates no moisture sensitivity restrictions for storage and handling.

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