1SS400CST2R Equivalent & Substitute Parts Reference

Part Overview

The 1SS400CST2R from Rohm Semiconductor is a surface-mount general-purpose rectifier diode, categorized under Diodes, Rectifiers. It supports a maximum reverse voltage of 80 V and a continuous forward current of 100 mA. The diode is rated with a forward voltage of 1.2 V at 100 mA, features a low reverse leakage current of 100 nA at 80 V, and is housed in a compact VMN2 (SOD-923) surface-mount package. With a product status of "Not For New Designs," it is necessary to evaluate and select compatible alternative models, especially for ongoing or future projects requiring continued availability and compliance.

Substiute Parts

1SS400CST2R

Rohm SemiconductorIn Stock: 77331SS400CST2R Datasheet

Current PartRFQ

1SS400CSFHT2RA

Rohm SemiconductorIn Stock: 405211SS400CSFHT2RA Datasheet

Parametric EquivalentRFQ

1SS400CST2RA

Rohm SemiconductorIn Stock: 191541SS400CST2RA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent and substitute models for the 1SS400CST2R are selected based on strict alignment of key electrical and mechanical parameters, including Voltage - DC Reverse (80 V max), Current - Average Rectified (100 mA), Forward Voltage (1.2 V @ 100 mA), Reverse Leakage Current (100 nA @ 80 V), capacitance, package type (VMN2/SOD-923), and mounting configuration. Compliance parameters such as RoHS, MSL rating, REACH status, and operating temperature (150°C max) must also match to ensure seamless compatibility in applications and assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Selection among 1SS400CST2R, 1SS400CSFHT2RA, and 1SS400CST2RA can be made based on stock availability and required certifications. All listed parts are ROHS3 compliant, MSL 1 rated, and REACH unaffected, which meets industry environmental and handling standards. The product status for 1SS400CSFHT2RA is "Not For New Designs," while 1SS400CST2RA is "Active." This status difference may influence selection for new or ongoing projects requiring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q1: What are the key criteria for selecting substitute diodes in the 1SS400CST2R category?
A1: Substitute selection requires identical or matching electrical ratings (reverse voltage, forward current, forward voltage at rated current, reverse leakage current, capacitance), mechanical characteristics (VMN2/SOD-923 package, surface mount), and compliance attributes (RoHS, REACH, MSL).

Q2: Are all listed alternatives compatible in terms of package and mounting?
A2: All models use the identical VMN2 (SOD-923) surface-mount package with 2 flat leads, ensuring compatibility in automated assembly and PCB footprint.

Q3: How do regulatory compliance requirements affect substitute selection?
A3: All variants are ROHS3 compliant, REACH unaffected, and designated as MSL 1 (Unlimited), satisfying standard environmental and handling regulations for electronic manufacturing.

Q4: Does product status impact substitute selection for ongoing projects?
A4: The "Active" status of 1SS400CST2RA favors selection for future designs, whereas "Not For New Designs" may be suited for sustaining existing or legacy products already using 1SS400CST2R or 1SS400CSFHT2RA.

Q5: Are there any differences in electrical performance among the substitutes?
A5: All substitutes match on critical electrical parameters as specified: 80 V DC reverse voltage, 100 mA average rectified current, 1.2 V maximum forward voltage at 100 mA, and 100 nA reverse leakage at 80 V. Capacitance and other specified parameters are aligned for all variants.