CDSL4148-G Equivalent & Substitute Parts Reference

Part Overview

The CDSL4148-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 75 V DC reverse voltage and 150 mA average rectified current in a surface mount SOD-80 MiniMELF package. This part is classified as obsolete, making identification of active equivalent alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance within the specified parameter ranges while meeting packaging and compliance requirements.

Substiute Parts

CDSL4148-G

Comchip TechnologyIn Stock: 161682CDSL4148-G Datasheet

Current PartRFQ

LS4148-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 147460LS4148-GS08 Datasheet

Parametric EquivalentRFQ

LS4148-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 9897LS4148-GS18 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDSL4148-G are qualified based on the following electrical and mechanical criteria:

Primary Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 75 V
• Current - Average Rectified (Io): 150 mA
• Package / Case: DO-213AC, MINI-MELF, SOD-80
• Mounting Type: Surface Mount
• Operating Temperature - Junction (Max): 175 °C

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) (Max) @ If: ≤ 1 V
• Reverse Recovery Time (trr): ≤ 8 ns
• Current - Reverse Leakage @ Vr: ≤ 5 µA @ 75 V
• Capacitance @ Vr, F: 4 pF @ 0V, 1MHz
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute parts LS4148-GS08 and LS4148-GS18 satisfy all primary matching parameters and remain within acceptable ranges for secondary parameters. Both substitutes are manufactured by Vishay General Semiconductor - Diodes Division and maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

LS4148-GS08 and LS4148-GS18 Substitution Basis:

Both LS4148-GS08 and LS4148-GS18 are direct parametric equivalents for the CDSL4148-G. The substitutes are manufactured by Vishay General Semiconductor - Diodes Division and maintain active product status, ensuring long-term availability and supply chain stability. Both parts carry AEC-Q101 automotive qualification and Automotive grade designation, providing enhanced reliability documentation beyond the original part.

Compliance Alignment:

• RoHS3 compliance maintained across all parts
• Moisture Sensitivity Level 1 (Unlimited) consistent
• REACH Unaffected status preserved
• ECCN EAR99 classification maintained

Electrical Performance: The substitute parts operate within the specified electrical envelope. Reverse recovery time (trr) increases from 4 ns to 8 ns, and reverse leakage current increases from 2.5 µA to 5 µA. These variations remain within acceptable ranges for general-purpose rectification applications in the 75 V, 150 mA classification.

Inventory Availability: LS4148-GS08 provides higher stock availability (147,400 pcs) compared to LS4148-GS18 (9,800 pcs), supporting procurement flexibility for volume requirements.

Frequently Asked Questions (FAQ)

Q: Can LS4148-GS08 and LS4148-GS18 be used interchangeably with CDSL4148-G?

A: Yes. Both substitute parts meet the electrical specifications and package requirements of the CDSL4148-G. The primary difference is reverse recovery time (8 ns versus 4 ns) and reverse leakage current (5 µA versus 2.5 µA), which remain within acceptable operating ranges for general-purpose rectification at 75 V, 150 mA.

Q: What is the difference between LS4148-GS08 and LS4148-GS18?

A: Both parts are electrically identical and carry the same electrical specifications. The suffix designations (GS08 and GS18) indicate different manufacturing date codes or tape reel configurations. Selection between these variants depends on procurement requirements and inventory availability.

Q: Are the substitute parts qualified for automotive applications?

A: Yes. Both LS4148-GS08 and LS4148-GS18 carry Automotive grade designation and AEC-Q101 qualification, exceeding the qualification level of the original CDSL4148-G.

Q: Does the package remain identical?

A: Yes. All parts use the DO-213AC, MINI-MELF, SOD-80 surface mount package with identical mechanical and thermal characteristics.

Q: Are there any compliance or regulatory differences?

A: No. All parts maintain ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), REACH Unaffected status, and EAR99 ECCN classification.

Q: Why is the reverse recovery time different?

A: The reverse recovery time difference (4 ns versus 8 ns) reflects manufacturing process variations between Comchip Technology and Vishay. Both values are within the Small Signal classification (≤ 200 mA) and do not affect functionality in general-purpose rectification circuits.

Q: What inventory considerations apply to these substitutes?

A: LS4148-GS08 maintains significantly higher stock levels (147,400 pcs) compared to LS4148-GS18 (9,800 pcs). For high-volume procurement, LS4148-GS08 provides superior supply chain continuity.