S1BB-13 Equivalent & Substitute Parts

Part Overview

The S1BB-13 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 1 A average rectified current in a surface mount SMB (DO-214AA) package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while meeting modern compliance standards.

Substiute Parts

S1BB-13

Diodes IncorporatedIn Stock: 735S1BB-13 Datasheet

Current PartRFQ

S1BB-13-F

Diodes IncorporatedIn Stock: 26267S1BB-13-F Datasheet

DirectRFQ

ER1B-LTP

Micro Commercial CoIn Stock: 3224ER1B-LTP Datasheet

MFR RecommendedRFQ

S1B

YAGEOIn Stock: 4761S1B Datasheet

MFR RecommendedRFQ

S1BB

Taiwan Semiconductor CorporationIn Stock: 751S1BB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Voltage Rating (Vr): Substitute must equal or exceed 100 V DC reverse voltage
• Current Rating (Io): Substitute must equal or exceed 1 A average rectified current
• Forward Voltage (Vf): Substitute must not exceed 1.1 V at 1 A to maintain circuit performance
• Package Type: Substitute must use DO-214AA (SMB) surface mount package for mechanical compatibility
• Operating Temperature Range: Substitute must support minimum -65°C junction temperature
• Reverse Recovery Characteristics: Substitute recovery speed must be compatible with circuit switching requirements

The following parts meet these substitution criteria:

1. S1BB-13-F (Diodes Incorporated) — Direct equivalent with identical electrical specifications and improved compliance status
2. S1BB (Taiwan Semiconductor Corporation) — Functionally equivalent with matching core electrical parameters
3. S1B (YAGEO) — Base series equivalent with compatible electrical characteristics
4. ER1B-LTP (Micro Commercial Co) — Alternative with enhanced recovery speed characteristics but different thermal range

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: S1BB-13-F (Diodes Incorporated)

The S1BB-13-F is the direct functional equivalent of the S1BB-13, offering identical electrical specifications with the advantage of active product status and ROHS3 compliance. This part is available in Tape & Reel packaging with 26,200 units in stock, providing supply continuity for production environments.

Secondary Substitute: S1BB (Taiwan Semiconductor Corporation)

The S1BB maintains full electrical compatibility with the original S1BB-13 across all critical parameters. This part is actively manufactured, ROHS3 compliant, and available with 691 units in stock. The operating temperature range extends to -55°C minimum, which is acceptable for most applications requiring -65°C operation.

Tertiary Substitute: S1B (YAGEO)

The S1B serves as a base series equivalent with compatible electrical characteristics. This part is actively produced and ROHS3 compliant with 4,697 units available. Complete electrical specifications are not provided in the reference data; verification against application requirements is necessary before selection.

Alternative Substitute: ER1B-LTP (Micro Commercial Co)

The ER1B-LTP offers enhanced reverse recovery performance (35 ns versus 3 µs) and extended operating temperature range (-65 to 175°C). This part is marked "Not For New Designs" and carries lower inventory (3,200 units). Selection is appropriate only when fast recovery characteristics provide specific circuit advantages.

Frequently Asked Questions (FAQ)

Q: Can S1BB-13-F be used as a direct replacement for S1BB-13?

A: Yes. The S1BB-13-F is electrically identical to the S1BB-13 across all specified parameters: 100 V reverse voltage, 1 A current rating, 1.1 V forward voltage, and identical package configuration. The primary difference is improved compliance status (ROHS3) and active product availability.

Q: What is the difference between S1BB-13 and S1BB?

A: Both parts share identical electrical specifications for voltage, current, forward voltage, and reverse leakage. The S1BB operates at a minimum junction temperature of -55°C compared to -65°C for the S1BB-13. For applications requiring operation below -55°C, the S1BB-13 or S1BB-13-F must be retained.

Q: Why is ER1B-LTP marked "Not For New Designs"?

A: The ER1B-LTP is a legacy product from Micro Commercial Co. While electrically compatible, its discontinued design status makes it unsuitable for new product development. Use this part only in existing designs where fast recovery characteristics (35 ns) provide specific performance benefits unavailable in active alternatives.

Q: Are all substitute parts available in the same package?

A: All substitute parts except S1B use the DO-214AA (SMB) package, which is mechanically and electrically compatible with the original S1BB-13. The S1B uses DO-214AC packaging; verify footprint compatibility before selection.

Q: What is the impact of forward voltage differences between substitutes?

A: The S1BB-13, S1BB-13-F, and S1BB all specify 1.1 V maximum forward voltage at 1 A. The ER1B-LTP specifies 950 mV, resulting in lower power dissipation. This difference is beneficial in power-sensitive applications but requires circuit validation to confirm acceptable voltage drop margins.

Q: Which substitute offers the best long-term supply availability?

A: The S1BB-13-F (Diodes Incorporated) offers the highest inventory (26,200 units) and active product status, providing the most reliable long-term supply chain. The S1BB (Taiwan Semiconductor Corporation) with 691 units and S1B (YAGEO) with 4,697 units provide secondary supply options.