Equivalent & Substitute Parts for SS12-M3/5AT

Part Overview

The SS12-M3/5AT 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 complies with ROHS3 and REACH standards. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring 20 V, 1 A Schottky diode functionality in surface mount configuration.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	20 V
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
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Operating Temperature - Junction	-65°C ~ 125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of rectifier diodes is determined by electrical and mechanical parameter equivalence. The primary substitution criteria for the SS12-M3/5AT are:

Critical Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 20 V
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

Critical Mechanical Parameters:

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

Compliance Requirements:

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

Parts are classified as substitutes when all critical electrical parameters match the main part specification and the package configuration is identical. Variations in reverse leakage current, capacitance, or operating temperature range do not preclude substitution when other parameters remain equivalent.

Parameter Comparison

Parameter	SS12-M3/5AT (Vishay)	SS12-E3/5AT (Vishay)	SS12-E3/61T (Vishay)	B120-13-F (Diodes Inc.)	SS12 (Taiwan Semi.)
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Diodes Incorporated	Taiwan Semiconductor Corporation
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V	20 V	20 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	500 mV @ 1 A	500 mV @ 1 A	500 mV @ 1 A	500 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	200 µA @ 20 V	200 µA @ 20 V	200 µA @ 20 V	500 µA @ 20 V	200 µA @ 20 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Operating Temperature - Junction	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 150°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Type	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®
Inventory Status	996 Pcs	5800 Pcs	71923 Pcs	109100 Pcs	65300 Pcs

Engineering Selection Recommendations

All identified substitute parts meet the electrical and mechanical requirements for direct replacement of the SS12-M3/5AT in applications requiring a 20 V, 1 A Schottky rectifier diode in DO-214AC (SMA) surface mount package.

Parametric Equivalents (Vishay): SS12-E3/5AT and SS12-E3/61T are parametric equivalents manufactured by Vishay General Semiconductor - Diodes Division. These parts maintain identical electrical specifications and operating temperature range (-65°C ~ 125°C) as the main part. Differences in packaging format (Tape & Reel) do not affect electrical performance. SS12-E3/61T offers significantly higher inventory availability (71,923 units) compared to the main part (996 units).

Manufacturer-Recommended Equivalent (Diodes Incorporated): B120-13-F is a manufacturer-recommended substitute from Diodes Incorporated. This part meets all critical electrical parameters with identical voltage, current, and forward voltage specifications. The B120-13-F operates across an extended temperature range (-65°C ~ 150°C) and exhibits higher reverse leakage current (500 µA @ 20 V) compared to the main part (200 µA @ 20 V). Packaging is supplied as Cut Tape (CT) & Digi-Reel® with substantially higher inventory availability (109,100 units).

Parametric Equivalent (Taiwan Semiconductor Corporation): SS12 from Taiwan Semiconductor Corporation is a parametric equivalent with identical electrical specifications. Operating temperature range is -55°C ~ 125°C, which is narrower at the lower temperature limit compared to the main part (-65°C). This part is available in Cut Tape (CT) & Digi-Reel® packaging with high inventory availability (65,300 units).

All substitute parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can SS12-E3/5AT be used as a direct replacement for SS12-M3/5AT?

A: Yes. SS12-E3/5AT is a parametric equivalent with identical electrical specifications: 20 V reverse voltage, 1 A average rectified current, 500 mV forward voltage at 1 A, and fast recovery speed. Both parts operate across -65°C ~ 125°C and are packaged in DO-214AC (SMA) surface mount configuration. The difference in packaging format (Tape & Reel) does not affect electrical performance.

Q: What is the difference between SS12-E3/61T and SS12-E3/5AT?

A: Both parts are parametric equivalents with identical electrical specifications and operating temperature range. The designation difference (61T versus 5AT) reflects different tape reel specifications or manufacturing batches from Vishay. Electrical performance and package configuration are equivalent.

Q: Can B120-13-F replace SS12-M3/5AT in all applications?

A: B120-13-F meets all critical electrical parameters for substitution: 20 V reverse voltage, 1 A average rectified current, and 500 mV forward voltage at 1 A. However, B120-13-F exhibits higher reverse leakage current (500 µA @ 20 V) compared to SS12-M3/5AT (200 µA @ 20 V). Applications sensitive to leakage current performance should evaluate this difference. B120-13-F operates across an extended temperature range (-65°C ~ 150°C), which is advantageous for high-temperature environments.

Q: Is the Taiwan Semiconductor SS12 suitable for low-temperature applications?

A: The Taiwan Semiconductor SS12 operates across -55°C ~ 125°C, which is narrower at the lower temperature limit compared to SS12-M3/5AT (-65°C ~ 125°C). Applications requiring operation below -55°C should use Vishay parts (SS12-M3/5AT, SS12-E3/5AT, SS12-E3/61T) or B120-13-F, which all support -65°C minimum junction temperature.

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

A: SS12-M3/5AT, SS12-E3/5AT, and SS12-E3/61T are supplied in Tape & Reel (TR) format. B120-13-F and Taiwan Semiconductor SS12 are supplied in Cut Tape (CT) & Digi-Reel® format. Packaging format selection depends on assembly equipment compatibility and procurement volume requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts (SS12-E3/5AT, SS12-E3/61T, B120-13-F, and SS12) carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and environmental requirements.

Q: Which substitute part offers the highest inventory availability?

A: B120-13-F from Diodes Incorporated offers the highest inventory availability at 109,100 units. SS12-E3/61T from Vishay is the second highest at 71,923 units. Taiwan Semiconductor SS12 is available at 65,300 units. These inventory levels support high-volume procurement requirements.

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