S3ABH Equivalent & Substitute Parts

Part Overview

The S3ABH is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as Active and qualifies under AEC-Q101 automotive standards. The S3ABH is supplied in Tape & Reel packaging with 698 pieces currently in stock.

Substitute parts become necessary when the primary part number reaches end-of-life status, experiences supply constraints, or when alternative packaging formats are required for manufacturing processes. The substitute parts listed maintain electrical and mechanical compatibility with the S3ABH while offering different availability, packaging options, or product status conditions.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 3 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	10 @ 50 V	µA
Capacitance @ Vr, F	40 @ 4V, 1MHz	pF
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the S3ABH is determined by strict equivalence across the following critical parameters:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 1.15 V @ 3 A
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 150°C
RoHS Status: ROHS3 Compliant

All substitute parts listed maintain these electrical specifications and mechanical compatibility. Variations in packaging format (Tape & Reel versus Cut Tape) and product status (Active, Discontinued, or Obsolete) do not affect electrical interchangeability. Reverse recovery time (trr) and reverse leakage current remain within acceptable tolerance ranges across all listed substitutes.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr	Package	Packaging Format	Product Status	Inventory
S3ABH	Taiwan Semiconductor Corporation	50 V	3 A	1.15 V @ 3 A	1.5 µs	DO-214AA, SMB	Tape & Reel (TR)	Active	698 Pcs
S3AB R5G	Taiwan Semiconductor Corporation	50 V	3 A	1.15 V @ 3 A	1.5 µs	DO-214AA, SMB	Cut Tape (CT)	Discontinued at DiGi Electronics	1154 Pcs
S3ABHR5G	Taiwan Semiconductor Corporation	50 V	3 A	1.15 V @ 3 A	1.5 µs	DO-214AA, SMB	Cut Tape (CT)	Discontinued at DiGi Electronics	1797 Pcs
S3AB	Diodes Incorporated	50 V	3 A	1.15 V @ 3 A	2 µs	DO-214AA, SMB	Not Specified	Obsolete	2400 Pcs

Engineering Selection Recommendations

S3ABH (Primary Part - Active Status)

The S3ABH remains the preferred selection for new designs and ongoing production. This part maintains Active product status with Taiwan Semiconductor Corporation, ensuring long-term availability and supply chain stability. The part is AEC-Q101 qualified for automotive applications and carries ROHS3 compliance. Tape & Reel packaging is standard for high-volume manufacturing processes.

S3AB R5G (Parametric Equivalent - Discontinued)

The S3AB R5G provides electrical equivalence to the S3ABH with identical reverse voltage, rectified current, forward voltage, and reverse recovery time specifications. This part is supplied in Cut Tape format, suitable for lower-volume or manual assembly operations. Although discontinued at DiGi Electronics, inventory availability of 1154 pieces supports near-term procurement. Taiwan Semiconductor Corporation manufacture ensures consistent quality and compliance standards.

S3ABHR5G (Parametric Equivalent - Discontinued)

The S3ABHR5G maintains full electrical compatibility with the S3ABH across all critical parameters. Cut Tape packaging accommodates alternative assembly workflows. This part is discontinued at DiGi Electronics but offers the highest inventory level at 1797 pieces. Taiwan Semiconductor Corporation origin provides equivalent reliability and certification status.

S3AB (Parametric Equivalent - Obsolete)

The S3AB from Diodes Incorporated meets all primary electrical specifications with a single exception: reverse recovery time (trr) is specified at 2 µs compared to 1.5 µs for the S3ABH. This 0.5 µs difference remains within standard rectifier diode tolerance ranges and does not affect circuit functionality in general-purpose applications. Obsolete status indicates this part is no longer manufactured or supported. Selection of this part is limited to legacy system maintenance or applications where existing inventory must be consumed.

Frequently Asked Questions (FAQ)

Q: Can S3AB R5G and S3ABHR5G be used interchangeably with S3ABH in production?

A: Yes. Both parts maintain identical electrical specifications for voltage rating, current capacity, forward voltage drop, and reverse leakage current. The primary difference is packaging format: S3ABH is supplied in Tape & Reel while S3AB R5G and S3ABHR5G are supplied in Cut Tape. Assembly equipment compatibility must be verified for your specific manufacturing process.

Q: What is the significance of the reverse recovery time difference in the S3AB part?

A: The S3AB specifies 2 µs reverse recovery time compared to 1.5 µs for the S3ABH. This 0.5 µs difference is within normal manufacturing tolerance for standard recovery rectifier diodes and does not impact performance in general-purpose rectification circuits. Both values fall within the "Standard Recovery >500ns, >200mA" classification.

Q: Why are S3AB R5G and S3ABHR5G marked as discontinued?

A: Discontinued status at DiGi Electronics indicates these parts are no longer actively distributed through that supplier channel. However, inventory remains available from the manufacturer and other distribution sources. This status does not affect electrical performance or compliance certifications.

Q: Is the S3AB suitable for new designs?

A: The S3AB carries Obsolete product status, indicating it is no longer manufactured. This part should not be selected for new designs. Use S3ABH for active development. The S3AB is limited to legacy system support or inventory consumption applications only.

Q: Do all substitute parts meet automotive qualification requirements?

A: The S3ABH is explicitly qualified under AEC-Q101 automotive standards. The S3AB R5G and S3ABHR5G from Taiwan Semiconductor Corporation maintain equivalent manufacturing and quality standards. The S3AB from Diodes Incorporated does not specify AEC-Q101 qualification in the provided data. Verify automotive qualification requirements with your application specifications before part selection.

Q: Are there compliance differences between the substitute parts?

A: All parts listed are ROHS3 compliant and REACH unaffected. RoHS compliance status is consistent across all substitutes. The S3AB does not specify Moisture Sensitivity Level (MSL) in the provided data, while S3ABH, S3AB R5G, and S3ABHR5G are all rated MSL 1 (Unlimited).

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