Equivalent & Substitute Parts for SS15HE3/5AT

Part Overview

The SS15HE3/5AT 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-214AC (SMA) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with compatible or superior performance characteristics.

Key Parameters

Parameter	Value
Technology	Schottky
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
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic for the SS15HE3/5AT is based on the following critical parameters:

Primary Equivalence Criteria:

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

Vishay Parametric Equivalents (B150 and SS15 series variants) maintain all electrical specifications and package requirements, differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete). These parts are direct functional replacements.

Manufacturer-Recommended Substitute (PMEG6010ER,115 from Nexperia) provides enhanced performance with 60 V reverse voltage rating and improved forward voltage characteristics (530 mV @ 1 A), though it utilizes a different package format (SOD-123W) requiring PCB layout modification.

Cross-Manufacturer Alternative (SS15 from Taiwan Semiconductor Corporation) delivers identical electrical performance and package compatibility with active product status and higher inventory availability.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Package	Product Status	Inventory (Pcs)
SS15HE3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Obsolete	1132
B150-E3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	804
B150-E3/61T	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	10972
B150-M3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	787
B150-M3/61T	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	15671
SS15-E3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	5225
SS15-E3/61T	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	18200
SS15-M3/5AT	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	1098
SS15-M3/61T	Vishay	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	756
SS15	Taiwan Semiconductor	50 V	1 A	750 mV @ 1 A	DO-214AC (SMA)	Active	50950
PMEG6010ER,115	Nexperia	60 V	1 A	530 mV @ 1 A	SOD-123W	Active	3200

Engineering Selection Recommendations

For Direct Replacement (Same Package, Identical Specifications):

Select from active Vishay Schottky diodes in the B150 or SS15 series with DO-214AC (SMA) packaging. Parts B150-E3/61T and SS15-E3/61T offer the highest inventory levels (10972 and 18200 units respectively) and active product status, ensuring long-term availability and supply chain stability. These parts are ROHS3 compliant and maintain MSL 1 rating.

For Enhanced Performance with Package Change:

The PMEG6010ER,115 from Nexperia provides superior electrical characteristics with 60 V reverse voltage rating and reduced forward voltage (530 mV @ 1 A), resulting in lower power dissipation. This part requires PCB layout modification due to SOD-123W package format and is suitable for designs where thermal performance or voltage margin improvement justifies redesign effort.

For Cross-Manufacturer Sourcing:

Taiwan Semiconductor Corporation's SS15 offers identical electrical and mechanical specifications with significantly higher inventory (50950 units), providing supply chain redundancy and competitive pricing. This part maintains ROHS3 compliance and MSL 1 rating.

All recommended substitutes are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080, matching the regulatory profile of the original part.

Frequently Asked Questions (FAQ)

Q: Can B150-E3/61T directly replace SS15HE3/5AT without PCB modification?

A: Yes. Both parts share identical electrical specifications (50 V, 1 A, 750 mV forward voltage) and DO-214AC (SMA) package geometry. No PCB layout changes are required. The primary difference is product status (Active versus Obsolete) and packaging format (Cut Tape & Digi-Reel versus bulk).

Q: What is the difference between B150-M3/61T and B150-E3/61T?

A: Both parts are parametrically equivalent with 50 V reverse voltage, 1 A current rating, and 750 mV forward voltage. The designations reflect internal Vishay manufacturing codes. Selection between these variants should be based on inventory availability and packaging preference (Tape & Reel format).

Q: Is PMEG6010ER,115 a direct substitute for SS15HE3/5AT?

A: PMEG6010ER,115 is a functional substitute with enhanced specifications (60 V reverse voltage, 530 mV forward voltage) but uses SOD-123W package instead of DO-214AC (SMA). PCB redesign is required for footprint compatibility. This part is suitable when improved thermal performance or voltage margin is beneficial.

Q: Why does SS15-M3/5AT show 40 V reverse leakage specification instead of 50 V?

A: The reverse leakage current measurement point differs (40 V versus 50 V), though the maximum reverse voltage rating remains 50 V. This represents a measurement condition variation rather than a functional limitation. The part maintains full 50 V reverse voltage capability.

Q: Which substitute offers the best inventory availability?

A: Taiwan Semiconductor Corporation's SS15 provides the highest inventory level at 50950 units, followed by Vishay's SS15-E3/61T at 18200 units and B150-M3/61T at 15671 units. These options ensure supply continuity for high-volume applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, matching the regulatory requirements of the original SS15HE3/5AT component.

Q: Can SS15 from Taiwan Semiconductor be used in military or aerospace applications?

A: Regulatory compliance (ROHS3, REACH, ECCN EAR99) is identical to the original part. Application suitability for military or aerospace use depends on additional qualification requirements beyond the scope of this equivalency reference. Consult application-specific standards and supplier documentation.

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