ACDSV4148-G Equivalent & Substitute Parts

Part Overview

The ACDSV4148-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 100 V DC reverse voltage and 200 mA average rectified current in a surface mount SOD-323 package. This component is classified as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for applications currently utilizing this diode.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	200 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA
Reverse Recovery Time (trr)	4 ns
Current - Reverse Leakage @ Vr	1 µA @ 75 V
Capacitance @ Vr, F	2 pF @ 0 V, 1 MHz
Package / Case	SC-76, SOD-323
Mounting Type	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution of the ACDSV4148-G is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Current - Average Rectified (Io): Must equal or exceed 200 mA
Voltage - Forward (Vf) (Max) @ If: Must equal or be lower than 1.25 V @ 150 mA
Reverse Recovery Time (trr): Must equal or be lower than 4 ns
Current - Reverse Leakage @ Vr: Must equal or be lower than 1 µA @ 75 V
Capacitance @ Vr, F: Must equal or be lower than 2 pF @ 0 V, 1 MHz
Operating Temperature - Junction: Must encompass or exceed -65°C ~ 150°C range

Mechanical Compatibility Criteria:

Package / Case: Must be SC-76, SOD-323
Mounting Type: Must be Surface Mount

Voltage Rating Consideration: The ACDSV4148-G operates at 100 V DC reverse voltage maximum. Substitute parts with lower voltage ratings (such as 75 V) are acceptable for applications where the circuit design does not require the full 100 V rating, provided all other electrical parameters are met or exceeded.

Parameter Comparison

Parameter	ACDSV4148-G (Main Part)	A1N4148WS-HF (Substitute)	Compatibility
Voltage - DC Reverse (Vr) (Max)	100 V	75 V	Substitute rated lower; acceptable for applications not requiring full 100 V
Current - Average Rectified (Io)	200 mA	200 mA	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA	1.25 V @ 150 mA	Equivalent
Reverse Recovery Time (trr)	4 ns	4 ns	Equivalent
Current - Reverse Leakage @ Vr	1 µA @ 75 V	1 µA @ 75 V	Equivalent
Capacitance @ Vr, F	2 pF @ 0 V, 1 MHz	2 pF @ 0 V, 1 MHz	Equivalent
Package / Case	SC-76, SOD-323	SC-76, SOD-323	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	Equivalent
Product Status	Last Time Buy	Active	Substitute is in active production
Qualification	AEC-Q101	Not specified in data	Main part carries automotive qualification

Engineering Selection Recommendations

The A1N4148WS-HF is a direct functional substitute for the ACDSV4148-G in applications where the circuit design voltage requirement does not exceed 75 V DC reverse voltage. Both components share identical electrical performance characteristics for forward voltage drop, reverse recovery time, leakage current, and capacitance. Both are packaged in SOD-323 surface mount format with identical thermal operating ranges.

The primary distinction is product status: the ACDSV4148-G is Last Time Buy (discontinued), while the A1N4148WS-HF is Active production status. The A1N4148WS-HF is supplied in Tape & Reel packaging with RoHS3 compliance and MSL Level 1 moisture sensitivity rating.

For applications requiring the full 100 V reverse voltage rating of the ACDSV4148-G, alternative parts with equivalent or higher voltage specifications must be evaluated. The A1N4148WS-HF substitution is valid only when circuit design permits operation at 75 V maximum reverse voltage.

Frequently Asked Questions (FAQ)

Q: Can the A1N4148WS-HF replace the ACDSV4148-G in all applications?

A: The A1N4148WS-HF is a functional substitute provided the circuit design does not require reverse voltage exceeding 75 V. All other electrical parameters (forward voltage, current rating, recovery time, leakage, and capacitance) are identical. Verify circuit maximum reverse voltage specification before substitution.

Q: What is the primary difference between these two parts?

A: The ACDSV4148-G is rated for 100 V DC reverse voltage, while the A1N4148WS-HF is rated for 75 V DC reverse voltage. All other electrical characteristics are equivalent. The ACDSV4148-G is Last Time Buy status; the A1N4148WS-HF is in active production.

Q: Are the packages identical?

A: Yes. Both components use the SC-76, SOD-323 surface mount package with identical physical dimensions and pin configuration. PCB layout compatibility is maintained.

Q: What is the difference in packaging format?

A: The ACDSV4148-G packaging format is not specified in available data. The A1N4148WS-HF is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly.

Q: Does the A1N4148WS-HF meet automotive qualification requirements?

A: The A1N4148WS-HF qualification status is not specified in provided data. The ACDSV4148-G carries AEC-Q101 automotive qualification. Verify qualification requirements for your specific application before substitution.

Q: What is the moisture sensitivity level of the substitute part?

A: The A1N4148WS-HF carries MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.

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