SSC54-M3/9AT Equivalent & Substitute Parts

Part Overview

The SSC54-M3/9AT is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 40 V DC reverse voltage with a 5 A average rectified current rating and is housed in a DO-214AB (SMC) package. The part is active in production status and complies with ROHS3 and REACH requirements.

Equivalent and substitute parts are identified when design requirements necessitate alternative packaging formats, different supplier sourcing, or automotive-grade qualification levels while maintaining identical electrical performance specifications.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	5 A
Voltage - Forward (Vf) (Max) @ If	490 mV @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 40 V
Package / Case	DO-214AB, SMC
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 relationships for the SSC54-M3/9AT are established based on strict electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 5 A
Voltage - Forward (Vf) (Max) @ If: 490 mV @ 5 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 500 µA @ 40 V
Package / Case: DO-214AB, SMC
Operating Temperature - Junction: -65°C ~ 150°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are differentiated by packaging format (Tape & Reel, Cut Tape, or Digi-Reel®) and automotive qualification status. The CDBC540-HF from Comchip Technology is included as a manufacturer-recommended alternative despite minor parameter variations in forward voltage and capacitance specifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Temp Range	Packaging Format	Automotive Grade
SSC54-M3/9AT	Vishay	40 V	5 A	490 mV @ 5 A	≤ 500ns	500 µA @ 40 V	DO-214AB	-65°C ~ 150°C	Tape & Reel	No
SSC54-E3/57T	Vishay	40 V	5 A	490 mV @ 5 A	≤ 500ns	500 µA @ 40 V	DO-214AB	-65°C ~ 150°C	Cut Tape & Digi-Reel®	No
SSC54-E3/9AT	Vishay	40 V	5 A	490 mV @ 5 A	≤ 500ns	500 µA @ 40 V	DO-214AB	-65°C ~ 150°C	Cut Tape & Digi-Reel®	No
SSC54-M3/57T	Vishay	40 V	5 A	490 mV @ 5 A	≤ 500ns	500 µA @ 40 V	DO-214AB	-65°C ~ 150°C	Cut Tape	No
SSC54HE3_A/H	Vishay	40 V	5 A	490 mV @ 5 A	≤ 500ns	500 µA @ 40 V	DO-214AB	-65°C ~ 150°C	Cut Tape & Digi-Reel®	Yes (AEC-Q101)
SSC54HE3_A/I	Vishay	40 V	5 A	490 mV @ 5 A	≤ 500ns	500 µA @ 40 V	DO-214AB	-65°C ~ 150°C	Cut Tape	Yes (AEC-Q101)
CDBC540-HF	Comchip Technology	40 V	5 A	550 mV @ 5 A	≤ 500ns	500 µA @ 40 V	DO-214AB	-50°C ~ 150°C	Tape & Reel	No

Engineering Selection Recommendations

Vishay SSC54 Series (Standard Grade): The SSC54-E3/57T, SSC54-E3/9AT, and SSC54-M3/57T are direct parametric equivalents to the SSC54-M3/9AT. Selection among these parts is determined by packaging format requirements. The Cut Tape & Digi-Reel® format (SSC54-E3/57T and SSC54-E3/9AT) accommodates both manual and automated assembly processes. The Cut Tape format (SSC54-M3/57T) is suitable for manual pick-and-place operations.

Vishay SSC54HE3_A Series (Automotive Grade): The SSC54HE3_A/H and SSC54HE3_A/I are AEC-Q101 qualified alternatives with identical electrical specifications. These parts are appropriate for automotive applications requiring formal qualification documentation. The SSC54HE3_A/H supports Cut Tape & Digi-Reel® packaging, while the SSC54HE3_A/I is available in Cut Tape format.

Comchip CDBC540-HF (Alternative Manufacturer): The CDBC540-HF is a manufacturer-recommended substitute from Comchip Technology. This part maintains voltage, current, and speed specifications but operates within a reduced temperature range (-50°C ~ 150°C versus -65°C ~ 150°C) and exhibits a higher forward voltage specification (550 mV @ 5 A versus 490 mV @ 5 A). Selection of this part is appropriate when supply chain diversification or cost optimization is required and the specified electrical differences are acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can SSC54-E3/57T be used as a direct replacement for SSC54-M3/9AT?

A: Yes. The SSC54-E3/57T is a parametric equivalent with identical electrical specifications. The difference is packaging format: SSC54-E3/57T is supplied in Cut Tape & Digi-Reel® format, while SSC54-M3/9AT is supplied in Tape & Reel format. Both are suitable for surface mount assembly.

Q: What is the difference between standard grade and automotive grade SSC54 parts?

A: Automotive grade parts (SSC54HE3_A/H and SSC54HE3_A/I) carry AEC-Q101 qualification, indicating compliance with automotive industry reliability and testing standards. Electrical specifications remain identical to standard grade parts. Automotive grade selection is required for applications subject to automotive qualification requirements.

Q: Is the CDBC540-HF a suitable replacement for all applications?

A: The CDBC540-HF maintains the same voltage and current ratings but differs in forward voltage (550 mV versus 490 mV at 5 A) and minimum operating temperature (-50°C versus -65°C). This part is suitable for applications where these parameter differences are acceptable. Applications requiring the full -65°C lower temperature limit or the lower forward voltage specification should use Vishay SSC54 series parts.

Q: What packaging formats are available for SSC54 diodes?

A: Three packaging formats are available: Tape & Reel (TR), Cut Tape (CT), and Cut Tape & Digi-Reel® (CT & Digi-Reel®). Tape & Reel format is standard for high-volume automated assembly. Cut Tape format accommodates manual assembly and lower-volume applications. Cut Tape & Digi-Reel® format provides flexibility for both manual and automated processes.

Q: Are all listed substitute parts ROHS3 compliant?

A: Yes. All parts listed—SSC54-M3/9AT, SSC54-E3/57T, SSC54-E3/9AT, SSC54-M3/57T, SSC54HE3_A/H, SSC54HE3_A/I, and CDBC540-HF—are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the base product number for Vishay SSC54 variants?

A: The base product number is SSC54. Variants are differentiated by suffix codes indicating grade (standard or automotive), packaging format, and tape configuration. All variants share identical core electrical specifications.

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