CDST-2004S-HF Equivalent & Substitute Parts

Part Overview

The CDST-2004S-HF is a general-purpose diode array manufactured by Comchip Technology, configured as a 1 Pair Series Connection rectifier diode. This component operates at 240 V DC reverse voltage with 225 mA average rectified current per diode and is housed in a SOT-23-3 surface mount package. The part is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring this diode array specification.

Substiute Parts

CDST-2004S-HF

Comchip TechnologyIn Stock: 824CDST-2004S-HF Datasheet

Current PartRFQ

GSD2004S-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 2801GSD2004S-E3-08 Datasheet

Parametric EquivalentRFQ

MMBD2004S-7-F

Diodes IncorporatedIn Stock: 24128MMBD2004S-7-F Datasheet

Parametric EquivalentRFQ

MMBD2004SQ-7-F

Diodes IncorporatedIn Stock: 1113MMBD2004SQ-7-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDST-2004S-HF are qualified based on electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Series Connection
• Voltage - DC Reverse (Vr) (Max): 240 V
• Current - Average Rectified (Io) (per Diode): 225 mA (DC)
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 100 mA
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Reverse Recovery Time (trr): 50 ns
• Current - Reverse Leakage @ Vr: 100 nA @ 240 V
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Mounting Type: Surface Mount

All identified substitute parts meet these electrical and mechanical specifications. Variations in operating temperature range, packaging format (Tape & Reel vs. standard), and additional certifications (such as AEC-Q101 automotive qualification) are noted but do not disqualify substitution eligibility when core parameters align.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are Active product status and ROHS3 compliant, meeting regulatory requirements equivalent to the CDST-2004S-HF.

GSD2004S-E3-08 (Vishay General Semiconductor - Diodes Division): This part is electrically equivalent across all critical parameters. The operating temperature specification lists 150°C maximum rather than a range, which represents a functional equivalent for applications operating within the -65°C to 150°C envelope. Packaging is supplied in Tape & Reel format.

MMBD2004S-7-F (Diodes Incorporated): This part provides complete electrical and thermal equivalence to the CDST-2004S-HF, including identical operating temperature range (-65°C ~ 150°C). Packaging is supplied in Tape & Reel format. This part is suitable for direct substitution in standard applications.

MMBD2004SQ-7-F (Diodes Incorporated): This part meets all electrical specifications and operating temperature requirements of the CDST-2004S-HF. This variant carries AEC-Q101 automotive qualification and Automotive grade designation, making it suitable for applications requiring automotive-grade components. Packaging is supplied in Tape & Reel format.

Frequently Asked Questions (FAQ)

Q: Can MMBD2004S-7-F be used as a direct replacement for CDST-2004S-HF?

A: Yes. Both parts share identical electrical specifications (240 V reverse voltage, 225 mA average rectified current, 1 V forward voltage at 100 mA, 50 ns reverse recovery time), identical operating temperature range (-65°C ~ 150°C), and identical SOT-23-3 package configuration. Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between MMBD2004S-7-F and MMBD2004SQ-7-F?

A: Both parts are electrically and thermally identical. MMBD2004SQ-7-F carries AEC-Q101 automotive qualification and Automotive grade designation, while MMBD2004S-7-F is standard grade. Selection between these depends on application requirements for automotive qualification.

Q: Is GSD2004S-E3-08 suitable for applications requiring the full -65°C to 150°C operating range?

A: GSD2004S-E3-08 specifies a maximum junction temperature of 150°C. For applications requiring operation at the lower temperature extreme (-65°C), this part is suitable. The specification format differs from the CDST-2004S-HF but covers the same functional temperature envelope for standard applications.

Q: Are all substitute parts available in the same packaging format as CDST-2004S-HF?

A: All substitute parts use the SOT-23-3 surface mount package. The CDST-2004S-HF packaging format is not specified in the provided data. Substitute parts GSD2004S-E3-08, MMBD2004S-7-F, and MMBD2004SQ-7-F are supplied in Tape & Reel (TR) format. Verify packaging requirements for your procurement process.

Q: Can MMBD2004SQ-7-F be used in non-automotive applications?

A: Yes. MMBD2004SQ-7-F meets all electrical and mechanical specifications required for general-purpose applications. The AEC-Q101 qualification and Automotive grade designation indicate suitability for automotive use but do not restrict application to automotive circuits only.

Q: What parameters must match for a part to be considered a substitute?

A: Critical matching parameters include diode configuration (1 Pair Series Connection), reverse voltage (240 V), average rectified current (225 mA per diode), forward voltage (1 V @ 100 mA), reverse recovery time (50 ns), reverse leakage current (100 nA @ 240 V), and package type (SOT-23-3 surface mount). Operating temperature range and additional certifications may vary while maintaining substitution eligibility.