Equivalent & Substitute Parts for SS12-E3/5AT

Part Overview

The SS12-E3/5AT is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 20 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active and fully compliant with RoHS3 and REACH regulations. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and manufacturing optimization while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

SS12-E3/5AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 5820SS12-E3/5AT Datasheet

Current PartRFQ

SS12-E3/61T

Vishay General Semiconductor - Diodes DivisionIn Stock: 71963SS12-E3/61T Datasheet

Parametric EquivalentRFQ

B120-13-F

Diodes IncorporatedIn Stock: 109117B120-13-F Datasheet

MFR RecommendedRFQ

SS12-LTP

Micro Commercial CoIn Stock: 10174SS12-LTP Datasheet

MFR RecommendedRFQ

STPS1L30A

STMicroelectronicsIn Stock: 17265STPS1L30A Datasheet

MFR RecommendedRFQ

SS12

Taiwan Semiconductor CorporationIn Stock: 65317SS12 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SS12-E3/5AT are classified based on electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): 20 V minimum
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 500 mV @ 1 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 200 µA @ 20 V

Mechanical Parameters:

• Mounting Type: Surface Mount
• Package / Case: DO-214AC, SMA

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts are grouped into two categories: Parametric Equivalents (identical electrical and mechanical specifications) and Manufacturer Recommended Alternatives (compatible within application requirements with noted parameter variations).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitution):

SS12-E3/61T (Vishay General Semiconductor) and SS12 (Taiwan Semiconductor Corporation) are parametric equivalents to the SS12-E3/5AT. Both parts maintain identical electrical specifications (20 V reverse voltage, 1 A current rating, 500 mV forward voltage at 1 A, 200 µA reverse leakage) and mechanical compatibility (DO-214AC/SMA package, surface mount). Both are Active products with ROHS3 compliance and MSL 1 rating. These parts are suitable for direct substitution in existing designs.

Manufacturer Recommended Alternatives:

B120-13-F (Diodes Incorporated) is an Active product offering electrical equivalence with identical voltage, current, and speed ratings. The reverse leakage specification is 500 µA at 20 V (higher than the primary part's 200 µA), and the operating temperature range extends to 150°C. This part is suitable for applications where extended temperature performance is beneficial.

STPS1L30A (STMicroelectronics) is an Active product with a higher reverse voltage rating of 30 V and improved forward voltage performance (395 mV at 1 A versus 500 mV). This part is suitable for applications requiring higher voltage margin or lower forward voltage dissipation. The 30 V rating provides design flexibility for circuits with voltage transients.

SS12-LTP (Micro Commercial Co) carries a "Not For New Designs" status and is not recommended for new product development. This part is retained in the substitute list for legacy system support only.

Compliance and Certification:

All Active products listed (SS12-E3/5AT, SS12-E3/61T, B120-13-F, STPS1L30A, SS12) are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings, supporting deployment in standard manufacturing environments without special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can SS12-E3/61T be used as a direct replacement for SS12-E3/5AT?

A: Yes. SS12-E3/61T is a parametric equivalent with identical electrical specifications (20 V reverse voltage, 1 A current, 500 mV forward voltage at 1 A, 200 µA reverse leakage) and mechanical compatibility (DO-214AC/SMA package). Both are Active products with ROHS3 compliance.

Q: What is the difference between B120-13-F and SS12-E3/5AT?

A: B120-13-F maintains electrical equivalence in voltage, current, and speed ratings. The primary differences are: reverse leakage is 500 µA at 20 V (versus 200 µA for SS12-E3/5AT), and the operating temperature range extends to 150°C (versus 125°C). B120-13-F is suitable for applications requiring extended temperature performance.

Q: Why is STPS1L30A listed as a substitute if it has a 30 V rating instead of 20 V?

A: STPS1L30A is listed as a manufacturer-recommended alternative because it maintains the 1 A current rating and fast recovery speed while offering a higher reverse voltage rating (30 V). The higher voltage rating provides design margin for circuits with voltage transients. The forward voltage is also improved at 395 mV versus 500 mV, reducing power dissipation. This part is suitable for applications where higher voltage capability is beneficial.

Q: Is SS12-LTP recommended for new designs?

A: No. SS12-LTP carries a "Not For New Designs" product status. This part is listed for reference only to support legacy systems and existing inventory management. New designs should use SS12-E3/5AT, SS12-E3/61T, B120-13-F, STPS1L30A, or SS12.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitute parts use the DO-214AC (SMA) surface mount package, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The primary parameters are: Voltage - DC Reverse (Vr) (Max) of 20 V minimum, Current - Average Rectified (Io) of 1 A, Voltage - Forward (Vf) (Max) @ If of 500 mV @ 1 A, and Fast Recovery speed ≤ 500ns for currents > 200mA. Reverse leakage current and operating temperature range are secondary considerations based on application requirements.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All Active substitute parts (SS12-E3/5AT, SS12-E3/61T, B120-13-F, STPS1L30A, SS12) are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, supporting standard manufacturing environments.

Q: What is the difference between SS12 (Taiwan Semiconductor) and SS12-E3/5AT (Vishay)?

A: Both parts are parametric equivalents with identical electrical specifications (20 V reverse voltage, 1 A current, 500 mV forward voltage at 1 A, 200 µA reverse leakage) and DO-214AC/SMA package compatibility. The primary difference is the manufacturer and operating temperature range: Taiwan Semiconductor SS12 operates from -55°C to 125°C, while Vishay SS12-E3/5AT operates from -65°C to 125°C. Both are Active products with ROHS3 compliance.