SF32GHA0G Equivalent & Substitute Parts

Part Overview

The SF32GHA0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This diode is classified as Active product status and features fast recovery characteristics with a reverse recovery time of 35 ns, making it suitable for standard rectification applications requiring rapid switching performance.

Substitute parts are identified to provide design flexibility when the primary part becomes unavailable or when application requirements necessitate alternative electrical characteristics within compatible parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Package / Case	DO-201AD, Axial	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of rectifier diodes is determined by compatibility across the following critical parameters:

Voltage Rating Compatibility: The substitute part must equal or exceed the maximum DC reverse voltage (Vr) of the primary part. The SF32GHA0G operates at 100 V maximum reverse voltage; substitute parts must maintain this voltage class or higher.

Package Compatibility: Both the primary part and substitute must use identical or mechanically equivalent packaging. The SF32GHA0G uses DO-201AD axial through-hole packaging; substitutes must employ the same package type to ensure direct board-level compatibility without layout modifications.

Current Rating: While the substitute may have a higher current rating than the primary part, it must not have a lower current rating. The SF32GHA0G is rated for 3 A average rectified current; substitutes with equal or higher current capacity are acceptable.

Temperature Range: The operating temperature range must encompass or match the primary part's range (-55°C to 150°C junction temperature).

Compliance and Certification: RoHS and REACH compliance status must be maintained. Automotive-grade qualification (AEC-Q101) is a design requirement for this primary part.

The identified substitute part 60S1-TP meets the voltage, package, and temperature requirements but differs in current rating (6 A versus 3 A) and recovery speed classification, making it suitable for applications where higher current capacity is beneficial or neutral.

Parameter Comparison

Parameter	SF32GHA0G (Primary)	60S1-TP (Substitute)	Compatibility Notes
Manufacturer	Taiwan Semiconductor Corporation	Micro Commercial Co	Different manufacturers
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	Matched
Current - Average Rectified (Io)	3 A	6 A	Substitute rated higher
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	1 V @ 6 A	Different test conditions
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA	Standard Recovery > 500 ns, > 200 mA	Primary is faster
Reverse Recovery Time (trr)	35 ns	Not specified	Primary specifies value
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	Matched
Capacitance @ Vr, F	80 pF @ 4 V, 1 MHz	150 pF @ 4 V, 1 MHz	Substitute has higher capacitance
Package / Case	DO-201AD, Axial	DO-201AD, Axial	Matched
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	Matched
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched
Product Status	Active	Not For New Designs	Primary is active

Engineering Selection Recommendations

Primary Part Selection: The SF32GHA0G remains the recommended choice for new designs. It carries Active product status, automotive-grade qualification (AEC-Q101), and fast recovery characteristics suitable for applications requiring rapid switching response. The part is in stock with 1121 units available.

Substitute Part Consideration: The 60S1-TP is electrically compatible at the voltage and package level but carries Not For New Designs status. This classification indicates the part is available for legacy system support or replacement applications only. The substitute exhibits standard recovery speed rather than fast recovery, resulting in a longer reverse recovery time than the primary part. The higher current rating (6 A versus 3 A) and increased capacitance (150 pF versus 80 pF) may introduce different circuit behavior in timing-sensitive applications.

Compliance Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status. The primary part's automotive-grade qualification should be verified as a requirement for the target application before selecting the substitute.

Inventory Consideration: The substitute part has higher inventory availability (2750 units) compared to the primary part (1121 units), which may influence selection in high-volume procurement scenarios.

Frequently Asked Questions (FAQ)

Q: Can the 60S1-TP directly replace the SF32GHA0G in an existing circuit?

A: The 60S1-TP is mechanically and electrically compatible at the voltage and package level. However, the substitute has different recovery speed characteristics (standard versus fast recovery) and higher capacitance. Circuit performance may differ in applications sensitive to switching speed or capacitive loading. Functional verification is necessary for timing-critical circuits.

Q: What is the significance of the "Not For New Designs" status on the 60S1-TP?

A: This designation indicates the part is available for replacement and legacy support purposes but should not be selected for new product development. The primary part SF32GHA0G is the recommended choice for new designs.

Q: Are both parts suitable for automotive applications?

A: The SF32GHA0G carries automotive-grade qualification (AEC-Q101). The 60S1-TP does not list automotive qualification in the provided specifications. Automotive application requirements must be verified before selecting the substitute.

Q: How do the current ratings affect substitution?

A: The 60S1-TP is rated for 6 A average rectified current compared to the SF32GHA0G's 3 A rating. A higher-rated substitute is acceptable for applications operating at or below the primary part's current level. The substitute provides additional current capacity margin without reducing circuit performance in this regard.

Q: What is the impact of the different forward voltage specifications?

A: The SF32GHA0G specifies 950 mV forward voltage at 3 A, while the 60S1-TP specifies 1 V at 6 A. These measurements are taken at different current levels, making direct comparison imprecise. The substitute's slightly higher forward voltage may result in marginally increased power dissipation in the application circuit.

Q: Do both parts have identical package dimensions?

A: Both parts use DO-201AD axial through-hole packaging, ensuring mechanical compatibility and direct board-level substitution without layout modifications.

Q: What is the difference between fast recovery and standard recovery classifications?

A: The SF32GHA0G is classified as fast recovery with a reverse recovery time of 35 ns. The 60S1-TP is classified as standard recovery with recovery time exceeding 500 ns. Fast recovery diodes switch more rapidly, reducing switching losses in high-frequency applications. Standard recovery diodes are suitable for lower-frequency rectification circuits.

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