S3BB General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The S3BB is a general purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100V DC reverse voltage and 3A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts become necessary when the primary S3BB from Taiwan Semiconductor Corporation is unavailable due to inventory constraints, supply chain disruptions, or when alternative packaging formats are required for manufacturing processes. The substitute parts listed maintain electrical and mechanical compatibility within the specified parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) Maximum @ If	1.15 @ 3 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	10 @ 100 V	µA
Capacitance @ Vr, F	40 @ 4V, 1MHz	pF
Operating Temperature - Junction	-55 to 150	°C
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Technology	Standard	-

Substitute Part Grouping Explanation

Substitution of rectifier diodes is determined by equivalence in the following critical parameters:

Voltage Rating: DC reverse voltage (Vr) must equal or exceed 100V
Current Rating: Average rectified current (Io) must equal or exceed 3A
Forward Voltage Drop: Vf @ 3A must not exceed 1.15V
Reverse Recovery Time: trr must not exceed 1.5µs for standard recovery applications
Reverse Leakage Current: Must not exceed 10µA @ 100V
Package Compatibility: Surface mount DO-214AA (SMB) package required
Temperature Range: Operating junction temperature range -55°C to 150°C
Compliance: ROHS3 compliance and REACH unaffected status required

Parts are grouped as parametric equivalents when all electrical specifications and package requirements match the main part. Packaging format variations (Tape & Reel versus Cut Tape) do not affect electrical substitution but may impact procurement and assembly processes.

Parameter Comparison

Parameter	S3BB (Taiwan Semiconductor)	S3BB R5G (Taiwan Semiconductor)	S3BB (Diodes Incorporated)
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Diodes Incorporated
Voltage - DC Reverse (Vr) Max	100 V	100 V	100 V
Current - Average Rectified (Io)	3 A	3 A	3 A
Voltage - Forward (Vf) Max @ If	1.15 V @ 3 A	1.15 V @ 3 A	1.15 V @ 3 A
Reverse Recovery Time (trr)	1.5 µs	1.5 µs	2 µs
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V
Capacitance @ Vr, F	40 pF @ 4V, 1MHz	40 pF @ 4V, 1MHz	40 pF @ 4V, 1MHz
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Not specified
Product Status	Active	Discontinued at DiGi Electronics	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Selection: S3BB manufactured by Taiwan Semiconductor Corporation in Tape & Reel packaging is the recommended choice. This part maintains Active product status, ensuring long-term availability and supply chain stability. Current inventory of 867 pieces supports immediate procurement requirements.

Secondary Selection: S3BB R5G from Taiwan Semiconductor Corporation is electrically equivalent to the primary part and maintains identical electrical specifications. This substitute is suitable when Cut Tape packaging format is required for specific assembly processes. The part is discontinued at DiGi Electronics but remains available through alternative distribution channels. Inventory of 1050 pieces is currently available.

Tertiary Selection: S3BB from Diodes Incorporated is not recommended for new designs. This part carries Obsolete product status, indicating end-of-life classification and limited future availability. While electrical specifications are substantially equivalent, the reverse recovery time (trr) is specified at 2µs compared to 1.5µs for Taiwan Semiconductor parts, representing a 33% increase in recovery time. This difference may impact circuit performance in high-frequency switching applications. Procurement of this part should be limited to legacy system maintenance only.

Frequently Asked Questions (FAQ)

Q: Can S3BB R5G be used as a direct replacement for S3BB in production?

A: Yes. S3BB R5G from Taiwan Semiconductor Corporation is electrically equivalent to S3BB. The only difference is packaging format: S3BB R5G is supplied in Cut Tape (CT) format while the primary S3BB is supplied in Tape & Reel (TR) format. Both formats contain identical components and meet all electrical specifications. Selection between formats depends on assembly line requirements and handling procedures.

Q: What is the significance of the reverse recovery time difference between Taiwan Semiconductor and Diodes Incorporated versions?

A: The S3BB from Diodes Incorporated specifies reverse recovery time (trr) at 2µs, while Taiwan Semiconductor versions specify 1.5µs. This 0.5µs difference affects switching speed and may introduce additional switching losses in high-frequency rectification circuits. For applications operating below 100kHz, this difference is typically negligible. For higher frequency applications, the Taiwan Semiconductor versions are preferred.

Q: Are all listed parts ROHS3 compliant?

A: Yes. All three parts listed (S3BB and S3BB R5G from Taiwan Semiconductor Corporation, and S3BB from Diodes Incorporated) are ROHS3 compliant and REACH unaffected. All parts are suitable for applications requiring environmental compliance certification.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, suitable for lower-volume assembly or manual handling. Both formats contain identical components; the difference is in supply format only.

Q: Why is the Diodes Incorporated S3BB marked as Obsolete?

A: Obsolete product status indicates the manufacturer has discontinued production and will not accept new orders. This classification typically occurs when a manufacturer consolidates product lines or transitions to newer component families. Existing inventory may be available through secondary distributors, but long-term supply cannot be guaranteed.

Q: Can the S3BB be used in applications requiring reverse recovery times faster than 1.5µs?

A: No. The S3BB is classified as Standard Recovery with trr of 1.5µs. Applications requiring faster recovery times (typically below 500ns) require fast recovery or ultrafast recovery diodes, which are different component families with different part numbers and specifications.

Q: What is the moisture sensitivity level (MSL) rating and why is it important?

A: All listed parts carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture exposure precautions. This is the least restrictive moisture sensitivity classification and simplifies storage and handling requirements compared to higher MSL ratings.

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