SS36-M3/57T Equivalent & Substitute Parts

Part Overview

The SS36-M3/57T is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 60V DC reverse voltage and 3A average rectified current in a surface mount DO-214AB (SMC) package. This part is active and widely used in power conversion and protection circuits requiring fast recovery characteristics. Equivalent and substitute parts are identified based on matching electrical ratings, package compatibility, and manufacturing specifications to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) Max	60	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) Max @ If	750 mV @ 3 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500	µA @ 60 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS36-M3/57T are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share identical electrical specifications: 60V reverse voltage, 3A average rectified current, 750mV forward voltage drop at 3A, fast recovery characteristics, and DO-214AB SMC package. These parts differ only in packaging format (Tape & Reel vs. Cut Tape) or internal manufacturing grade (standard vs. automotive-qualified). Parametric equivalents include SS36-E3/57T, SS36-E3/9AT, SS36HE3_B/H, SS36HE3_B/I, SK36-AU_R1_000A1, and SK36-TP.

Manufacturer Recommended Alternatives maintain the 60V reverse voltage and DO-214AB SMC package but differ in current rating or forward voltage characteristics. These include higher-current variants (B560CQ-13-F and STPS5L60S/STPS5L60SY at 5A) and lower forward voltage options (STPS3L60S and STPS5L60S from STMicroelectronics). Selection of these alternatives requires circuit validation to confirm current headroom and thermal performance are acceptable.

Key parameters determining substitution eligibility:

Voltage - DC Reverse (Vr) Max: 60V (mandatory match)
Package / Case: DO-214AB, SMC (mandatory match)
Technology: Schottky (mandatory match)
Current - Average Rectified (Io): 3A minimum (equal or higher acceptable)
Voltage - Forward (Vf): 750mV or lower (lower values acceptable)
Speed: Fast Recovery ≤ 500ns (mandatory match)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) mV @ If	Reverse Leakage µA @ 60V	Package	Status	Grade
SS36-M3/57T	Vishay	60	3	750 @ 3A	500	DO-214AB	Active	Standard
SS36-E3/57T	Vishay	60	3	750 @ 3A	500	DO-214AB	Active	Standard
SS36-E3/9AT	Vishay	60	3	750 @ 3A	500	DO-214AB	Active	Standard
SS36HE3_B/H	Vishay	60	3	750 @ 3A	500	DO-214AB	Active	Automotive AEC-Q101
SS36HE3_B/I	Vishay	60	3	750 @ 3A	500	DO-214AB	Active	Automotive AEC-Q101
SK36-AU_R1_000A1	Panjit	60	3	750 @ 3A	100	DO-214AB	Active	Automotive AEC-Q101
SK36-TP	Micro Commercial Co	60	3	750 @ 3A	500	DO-214AB	Obsolete	Standard
B560CQ-13-F	Diodes Inc.	60	5	700 @ 5A	500	DO-214AB	Active	Automotive AEC-Q101
STPS3L60S	STMicroelectronics	60	3	700 @ 3A	55	DO-214AB	Active	Standard
STPS5L60S	STMicroelectronics	60	5	520 @ 5A	220	DO-214AB	Active	Standard
STPS5L60SY	STMicroelectronics	60	5	520 @ 5A	220	DO-214AB	Active	Automotive

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Drop-In Replacement)

SS36-E3/57T, SS36-E3/9AT, SS36HE3_B/H, and SS36HE3_B/I are direct electrical equivalents with identical voltage, current, and forward voltage specifications. These parts differ only in packaging format or automotive qualification grade. SS36HE3_B/H and SS36HE3_B/I carry AEC-Q101 automotive qualification, making them suitable for automotive and high-reliability applications. Selection between these equivalents depends on packaging availability (Tape & Reel vs. Cut Tape) and application requirements for automotive-grade components.

SK36-AU_R1_000A1 (Panjit) and SK36-TP (Micro Commercial Co) are parametric equivalents from alternative manufacturers. SK36-AU_R1_000A1 is active and AEC-Q101 qualified with lower reverse leakage (100µA vs. 500µA). SK36-TP is obsolete and should be avoided for new designs unless existing inventory must be consumed.

Higher Current Alternatives (Circuit Validation Required)

B560CQ-13-F (Diodes Inc.), STPS5L60S, and STPS5L60SY (STMicroelectronics) are rated for 5A instead of 3A. These parts provide additional current headroom and lower forward voltage drops (520mV at 5A for STPS variants vs. 750mV at 3A for SS36). These alternatives are suitable only when circuit design permits higher current capacity and thermal management is verified. STPS5L60SY includes automotive qualification.

Lower Forward Voltage Option (Thermal Performance Improvement)

STPS3L60S (STMicroelectronics) maintains 3A current rating but reduces forward voltage to 700mV at 3A and reverse leakage to 55µA. This variant reduces power dissipation and heat generation compared to the SS36-M3/57T, making it suitable for thermally constrained applications. Reverse leakage is significantly lower, improving efficiency in low-current standby conditions.

Compliance and Qualification Status

All recommended active parts maintain ROHS3 compliance, MSL 1 (Unlimited), and REACH Unaffected status. Automotive-qualified variants (SS36HE3_B/H, SS36HE3_B/I, SK36-AU_R1_000A1, STPS5L60SY) carry AEC-Q101 certification for automotive and high-reliability applications. Standard-grade variants are suitable for industrial and consumer applications without automotive requirements.

Frequently Asked Questions (FAQ)

Q: Can I use SS36-E3/57T as a direct replacement for SS36-M3/57T?

A: Yes. SS36-E3/57T is a parametric equivalent with identical electrical specifications (60V, 3A, 750mV forward voltage, fast recovery). The only difference is packaging format: SS36-M3/57T uses Tape & Reel (TR) while SS36-E3/57T uses Cut Tape (CT) & Digi-Reel®. Both are active and suitable for direct substitution if packaging format is compatible with assembly equipment.

Q: What is the difference between SS36HE3_B/H and SS36HE3_B/I?

A: Both are automotive-qualified (AEC-Q101) Vishay Schottky diodes with identical electrical ratings (60V, 3A, 750mV). The difference lies in packaging format: SS36HE3_B/H uses Cut Tape (CT) & Digi-Reel®, while SS36HE3_B/I uses Tape & Reel (TR). Electrical performance and reliability are equivalent; selection depends on assembly line compatibility.

Q: Can I substitute a 5A diode (STPS5L60S) for the 3A SS36-M3/57T?

A: Electrical substitution is possible because STPS5L60S maintains 60V reverse voltage and DO-214AB package. However, circuit validation is required. STPS5L60S has lower forward voltage (520mV at 5A vs. 750mV at 3A), which reduces power dissipation. Verify that the circuit design accommodates the higher current rating and that thermal management remains adequate. This substitution is beneficial for thermally constrained applications.

Q: Why is SK36-TP marked as obsolete?

A: SK36-TP (Micro Commercial Co) is listed with obsolete status, indicating the manufacturer has discontinued production. Although parametric equivalents exist, new designs should avoid this part. Existing inventory may be used if available, but long-term supply cannot be guaranteed. Transition to active alternatives such as SS36-E3/57T or SK36-AU_R1_000A1.

Q: What does AEC-Q101 qualification mean for diode selection?

A: AEC-Q101 is an automotive industry standard qualification for discrete semiconductors. Parts carrying this certification (SS36HE3_B/H, SS36HE3_B/I, SK36-AU_R1_000A1, STPS5L60SY) have undergone rigorous testing for reliability, temperature cycling, and performance consistency. AEC-Q101 qualification is mandatory for automotive applications and recommended for high-reliability industrial applications. Standard-grade parts without this certification are suitable for consumer and general industrial use.

Q: How does reverse leakage current affect part selection?

A: Reverse leakage current (specified at 60V) determines standby power consumption and efficiency at low operating currents. SS36-M3/57T specifies 500µA reverse leakage. STPS3L60S reduces this to 55µA, and SK36-AU_R1_000A1 to 100µA. Lower reverse leakage improves efficiency in applications with extended low-current or standby periods. Higher leakage (500µA) is acceptable in high-current applications where standby losses are negligible.

Q: Are all substitute parts available in the same DO-214AB package?

A: Yes. All substitute parts listed maintain the DO-214AB (SMC) surface mount package, ensuring mechanical and thermal compatibility. Differences exist only in packaging format for shipment and handling (Tape & Reel vs. Cut Tape & Digi-Reel®), which do not affect circuit performance or PCB assembly compatibility.

Q: What is the difference between standard and automotive-grade Schottky diodes?

A: Automotive-grade diodes (AEC-Q101 qualified) undergo additional qualification testing including temperature cycling, humidity resistance, and long-term reliability verification. Standard-grade diodes meet basic electrical specifications but without automotive-specific testing. For automotive applications, select AEC-Q101 qualified variants. For non-automotive applications, standard-grade parts provide cost savings without performance compromise.

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