Equivalent & Substitute Parts for 1SS400CSFHT2RA (Rohm Semiconductor)

Part Overview

The Rohm Semiconductor 1SS400CSFHT2RA is a surface mount diode classified under diodes, rectifiers. Its general-purpose functionality includes a maximum DC reverse voltage of 80 V, average rectified current of 100 mA, and ultra-fast reverse recovery time of 4 ns. It conforms to automotive grade standards with AEC-Q101 qualification and is packaged in the VMN2 (SOD-923) form factor. The product status is "Not For New Designs," which necessitates the evaluation of substitute models for ongoing designs, production continuity, and long-term sourcing.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Package / Case	Supplier Device Package	Mounting Type	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Capacitance @ Vr, F	Operating Temperature - Junction	RoHS Status	MSL	REACH Status	Product Status
1SS400CSFHT2RA	Rohm Semiconductor	Diodes, Rectifiers	2-SMD, Flat Lead	VMN2 (SOD-923)	Surface Mount	80 V	100 mA	1.2 V @ 100 mA	4 ns	100 nA @ 80 V	3 pF @ 500mV, 1MHz	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Not For New Designs

Substitute Part Grouping Explanation

Substitute parts are grouped by strict adherence to the following electrical and mechanical parameters: voltage (Vr), current (Io), forward voltage (Vf), reverse recovery time (trr), reverse leakage, capacitance, operating temperature, mounting and package type, and compliance certifications. Models are considered equivalent if all these parameters match the required values shown above for the 1SS400CSFHT2RA.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Capacitance @ Vr, F	Operating Temperature - Junction	Package / Case	Supplier Device Package	Mounting Type	RoHS Status	MSL	REACH Status	Product Status
1SS400CSFHT2RA	Rohm Semiconductor	80 V	100 mA	1.2 V @ 100 mA	4 ns	100 nA @ 80 V	3 pF @ 500mV, 1MHz	150°C (Max)	2-SMD, Flat Lead	VMN2 (SOD-923)	Surface Mount	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Not For New Designs
1SS400CST2RA	Rohm Semiconductor	80 V	100 mA	1.2 V @ 100 mA	4 ns	100 nA @ 80 V	3 pF @ 0.5V, 1MHz	150°C (Max)	2-SMD, Flat Lead	VMN2 (SOD-923)	Surface Mount	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	Active

Engineering Selection Recommendations

The 1SS400CST2RA matches all provided electrical, mechanical, and compliance parameters with the 1SS400CSFHT2RA. The main distinction is product status: 1SS400CSFHT2RA is categorized as "Not For New Designs," whereas 1SS400CST2RA is listed as "Active." Both are ROHS3 compliant, REACH unaffected, and share identical moisture sensitivity ratings, package dimensions, and AEC-Q101 automotive qualification. The substitute part is suitable for new and ongoing designs under these parameters.

Frequently Asked Questions (FAQ)

Q: What is the primary factor for substituting 1SS400CSFHT2RA in designs?
A: The main factor is product status; 1SS400CSFHT2RA is "Not For New Designs," making it necessary to select an active equivalent.

Q: Are the package dimensions and mounting types identical between the main part and its substitute?
A: Yes, both use VMN2 (SOD-923), are 2-SMD, Flat Lead packages, and are intended for surface mount applications.

Q: Do all electrical parameters for the substitute match the original specification?
A: Yes, voltage, current, forward voltage, reverse recovery time, leakage current, capacitance, and operating temperature are equivalent within the stated parameters.

Q: Are compliance and certification statuses equivalent for both parts?
A: Both parts are ROHS3 compliant, have REACH unaffected status, and are rated MSL 1 (Unlimited), meeting typical automotive and environmental requirements.

Q: Is AEC-Q101 automotive qualification retained in the substitute?
A: The substitute part maintains automotive grade and qualification as specified in the input parameters.

Q: Does the difference in capacitance test voltage (0.5V vs. 500mV) affect selection?
A: The capacitance value remains 3 pF at ~0.5V; this parameter is equivalent as specified for substitution.

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