CDSV4148-G Equivalent & Substitute Parts

Part Overview

The CDSV4148-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 75V DC reverse voltage and 150mA average rectified current in a surface mount SOD-323 package. This part is classified as obsolete, which necessitates identification of active equivalent components for ongoing design support and procurement continuity. The substitute part maintains identical electrical specifications and mechanical compatibility, enabling direct replacement in existing applications.

Substiute Parts

CDSV4148-G

Comchip TechnologyIn Stock: 1081CDSV4148-G Datasheet

Current PartRFQ

1N4148WS-HF

Comchip TechnologyIn Stock: 3905391N4148WS-HF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDSV4148-G is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part 1N4148WS-HF is qualified as a direct replacement based on the following criteria:

Electrical Parameter Equivalence:

• Reverse voltage rating: 75V (identical)
• Average rectified current: 150mA (identical)
• Forward voltage drop: 1.25V @ 150mA (identical)
• Reverse recovery time: 4ns (identical)
• Reverse leakage current: 1µA @ 75V (identical)
• Junction capacitance: 2pF @ 0V, 1MHz (identical)

Mechanical Compatibility:

• Package designation: SOD-323 (identical)
• Mounting type: Surface Mount (identical)
• Supplier device package: SOD-323 (identical)

Compliance & Status:

• RoHS3 compliance maintained
• Moisture sensitivity level: 1 (Unlimited) — identical
• Operating temperature range: 125°C maximum junction temperature (identical)

The substitute part differs only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. unspecified), with no impact on functional or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 1N4148WS-HF is the qualified substitute for CDSV4148-G based on complete electrical and mechanical parameter equivalence. Selection of the substitute part is supported by the following factors:

Product Status Consideration: The CDSV4148-G is classified as obsolete, indicating discontinued manufacturing and limited availability. The 1N4148WS-HF maintains active product status with confirmed inventory of 390,528 pieces, ensuring procurement reliability and supply chain continuity.

Compliance Alignment: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1 — Unlimited), confirming regulatory and environmental compatibility. The HTSUS classification remains consistent (8541.10.0070), supporting import/export documentation requirements.

Functional Equivalence: All electrical parameters—reverse voltage, forward voltage, rectified current, reverse recovery time, leakage current, and junction capacitance—are identical between the main part and substitute. No circuit redesign or performance degradation is introduced by substitution.

Packaging Compatibility: Both parts utilize the SOD-323 surface mount package with identical mechanical footprints and land patterns. The substitute part is supplied in Tape & Reel format, which is standard for high-volume surface mount assembly operations.

Frequently Asked Questions (FAQ)

Q: Can 1N4148WS-HF be used as a direct replacement for CDSV4148-G in existing PCB designs?

A: Yes. The 1N4148WS-HF is electrically and mechanically equivalent to CDSV4148-G. Both parts share identical SOD-323 package dimensions, pin configurations, and electrical specifications. No PCB layout modifications are required.

Q: What is the primary reason for substituting CDSV4148-G?

A: CDSV4148-G is classified as obsolete with limited inventory availability. The 1N4148WS-HF is an active product with substantial stock, ensuring reliable procurement for current and future production requirements.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts are rated for 75V reverse voltage, 150mA average rectified current, 1.25V forward voltage drop at 150mA, 4ns reverse recovery time, and 1µA reverse leakage current at 75V. Junction capacitance is identical at 2pF @ 0V, 1MHz.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both CDSV4148-G and 1N4148WS-HF are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings. REACH and ECCN classifications are consistent.

Q: What is the difference in packaging format between these parts?

A: CDSV4148-G packaging format is not specified in available documentation. The 1N4148WS-HF is supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly. Both parts use the SOD-323 package case.

Q: Is the 1N4148WS-HF suitable for high-temperature applications?

A: Both parts are rated for a maximum junction temperature of 125°C. Operating temperature capability is identical between the main part and substitute.

Q: Can the 1N4148WS-HF be used in applications requiring small-signal rectification?

A: Yes. Both parts are classified as small-signal diodes rated for ≤200mA average rectified current with any speed capability. The 1N4148WS-HF is suitable for all applications previously served by CDSV4148-G.