B130LB-13 Equivalent & Substitute Parts

Part Overview

The B130LB-13 is a Schottky rectifier diode rated for 30 V DC reverse voltage and 2 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 production and repair applications. Substitute parts must maintain electrical performance within the specified voltage and current parameters while accommodating available packaging and compliance requirements.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	445 mV @ 2 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	1	mA @ 30 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 125	°C
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the B130LB-13 is determined by the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io): 2 A minimum
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB compatible

Secondary Considerations:

Forward voltage (Vf) at rated current
Reverse leakage current
Operating temperature range
RoHS and regulatory compliance status
Product status (Active vs. Discontinued/Obsolete)

Substitute parts are grouped into two categories:

Category A - Direct Electrical & Package Equivalents (2A rated): Parts maintaining 2 A current rating with DO-214AA SMB package and 30 V reverse voltage specification.

Category B - Higher Current Capability (3A–4A rated): Parts with current ratings exceeding 2 A, suitable for applications with design margin or upgraded specifications, maintaining 30 V reverse voltage and SMB package compatibility.

Category C - Reduced Current Capability (1A rated): Parts with 1 A current rating, suitable only for applications where the 2 A requirement can be relaxed or where lower current paths are acceptable.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Package	Temp Range [°C]	RoHS Status	Product Status
B130LB-13	Diodes Incorporated	30	2	445 @ 2A	DO-214AA, SMB	-55 to 125	Non-compliant	Discontinued
B130LB-13-F	Diodes Incorporated	30	2	445 @ 2A	DO-214AA, SMB	-55 to 125	ROHS3 Compliant	Active
MBRS230LT3G	onsemi	30	2	500 @ 2A	DO-214AA, SMB	-55 to 125	ROHS3 Compliant	Active
SL23-E3/5BT	Vishay General Semiconductor - Diodes Division	30	2	440 @ 2A	DO-214AA, SMB	-55 to 125	ROHS3 Compliant	Active
SS23	Taiwan Semiconductor Corporation	30	2	500 @ 2A	DO-214AA, SMB	-55 to 125	ROHS3 Compliant	Active
SK33B-LTP	Micro Commercial Co	30	3	500 @ 3A	DO-214AA, SMB	-55 to 150	ROHS3 Compliant	Not For New Designs
SK43BL-TP	Micro Commercial Co	30	4	450 @ 4A	DO-214AA, SMB	-55 to 150	ROHS3 Compliant	Not For New Designs
BAS3010A03WE6327HTSA1	Infineon Technologies	30	1	470 @ 1A	SC-76, SOD-323	-65 to 125	ROHS3 Compliant	Active
STPS130U	STMicroelectronics	30	1	550 @ 1A	DO-214AA, SMB	-55 to 150	ROHS3 Compliant	Active
STPS1L30U	Vishay General Semiconductor - Diodes Division	30	1	420 @ 1A	DO-214AA, SMB	-55 to 150	Non-compliant	Obsolete

Engineering Selection Recommendations

For Direct Replacement (2 A Current Requirement):

The B130LB-13-F is the primary recommended substitute. It is manufactured by Diodes Incorporated (same manufacturer as the original part), maintains identical electrical specifications (30 V, 2 A, 445 mV forward voltage), uses the same DO-214AA SMB package, and holds Active product status with ROHS3 compliance. This part provides seamless compatibility with existing PCB layouts and assembly processes.

Alternative 2 A rated options include MBRS230LT3G (onsemi), SL23-E3/5BT (Vishay), and SS23 (Taiwan Semiconductor Corporation). All three maintain the 30 V reverse voltage and 2 A current rating with DO-214AA SMB packaging and Active product status. Forward voltage specifications vary slightly (440–500 mV @ 2 A), remaining within acceptable operating margins for most applications. All three are ROHS3 compliant.

For Applications Permitting Higher Current Ratings:

SK33B-LTP and SK43BL-TP offer 3 A and 4 A current ratings respectively, both maintaining 30 V reverse voltage and DO-214AA SMB package compatibility. These parts provide design margin for applications with potential current transients or future specification upgrades. Both are ROHS3 compliant but carry "Not For New Designs" status, limiting their suitability for new product development.

For Reduced Current Applications (1 A Requirement):

STPS130U (STMicroelectronics) and BAS3010A03WE6327HTSA1 (Infineon) are suitable where application current requirements do not exceed 1 A. STPS130U maintains DO-214AA SMB packaging and Active product status with ROHS3 compliance. BAS3010A03WE6327HTSA1 uses a smaller SC-76 SOD-323 package, requiring PCB layout modification but offering reduced board space. Both maintain 30 V reverse voltage specification.

Compliance Considerations:

The original B130LB-13 is RoHS non-compliant. All recommended active substitutes (B130LB-13-F, MBRS230LT3G, SL23-E3/5BT, SS23, STPS130U) are ROHS3 compliant, supporting transition to compliant supply chains. STPS1L30U is obsolete and RoHS non-compliant; its use is not recommended for new applications.

Frequently Asked Questions (FAQ)

Q: Can B130LB-13-F be used as a direct drop-in replacement for B130LB-13?

A: Yes. B130LB-13-F is manufactured by Diodes Incorporated and maintains identical electrical specifications (30 V reverse voltage, 2 A current rating, 445 mV forward voltage @ 2 A) and package format (DO-214AA SMB). No circuit modifications or PCB layout changes are required. B130LB-13-F is Active with ROHS3 compliance, addressing the discontinued status of the original part.

Q: What is the difference between the 2 A rated substitutes (B130LB-13-F, MBRS230LT3G, SL23-E3/5BT, SS23)?

A: All four parts meet the 30 V reverse voltage and 2 A current requirements with DO-214AA SMB packaging. Primary differences are forward voltage specifications (440–500 mV @ 2 A) and manufacturer. B130LB-13-F offers the closest electrical match to the original part. MBRS230LT3G, SL23-E3/5BT, and SS23 are from different manufacturers (onsemi, Vishay, and Taiwan Semiconductor Corporation respectively) but all are Active and ROHS3 compliant. Forward voltage variations are within typical application tolerances.

Q: Can SK33B-LTP or SK43BL-TP be used in place of B130LB-13?

A: SK33B-LTP (3 A) and SK43BL-TP (4 A) maintain 30 V reverse voltage and DO-214AA SMB package compatibility, making them electrically and mechanically compatible. However, both carry "Not For New Designs" status, limiting their use to legacy product support or repair applications. These parts are suitable only when higher current capability is beneficial or when legacy inventory must be consumed. For new designs, B130LB-13-F or other Active-status alternatives are preferred.

Q: Why is BAS3010A03WE6327HTSA1 listed as a substitute if it has only 1 A rating?

A: BAS3010A03WE6327HTSA1 is included as a substitute option for applications where the circuit current requirement does not exceed 1 A. It maintains the 30 V reverse voltage specification and Schottky technology. However, its SC-76 SOD-323 package differs from the DO-214AA SMB package of the original part, requiring PCB layout modification. This part is suitable only for applications where current reduction is acceptable and board space constraints justify package change.

Q: Are there any temperature range differences between substitutes?

A: Most 2 A rated substitutes (B130LB-13-F, MBRS230LT3G, SL23-E3/5BT, SS23) maintain the -55°C to 125°C junction temperature range of the original B130LB-13. SK33B-LTP and SK43BL-TP extend the upper limit to 150°C. STPS130U and STPS1L30U also reach 150°C maximum. For applications operating within -55°C to 125°C, all substitutes are suitable. Applications requiring operation above 125°C should specify SK33B-LTP, SK43BL-TP, STPS130U, or STPS1L30U.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: The original B130LB-13 is RoHS non-compliant. All recommended active substitutes are ROHS3 compliant, supporting regulatory requirements in markets enforcing RoHS directives. For new product designs and supply chain transitions, ROHS3 compliant parts (B130LB-13-F, MBRS230LT3G, SL23-E3/5BT, SS23, STPS130U) are required. STPS1L30U is RoHS non-compliant and obsolete; its use is not recommended.

Q: Can multiple substitute parts be used interchangeably in the same design?

A: Yes, provided the selected substitute meets the application's voltage (30 V minimum), current (2 A minimum for direct replacement), and package requirements (DO-214AA SMB for board compatibility). Forward voltage variations among 2 A rated substitutes (440–500 mV @ 2 A) are within typical design tolerances. However, mixing different part numbers in production should be avoided unless explicitly qualified by design review, as reverse leakage current and other secondary parameters vary among manufacturers.

Q: What should be considered when transitioning from B130LB-13 to a substitute part?

A: Verify that the selected substitute meets the application's voltage and current requirements. Confirm package compatibility with existing PCB layouts (DO-214AA SMB for direct replacement). Review forward voltage and reverse leakage specifications to ensure circuit performance remains within design margins. For new designs, prioritize Active-status parts with ROHS3 compliance. For legacy product support, any electrically compatible substitute is acceptable. Conduct functional testing on prototype units before full production transition.

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