B130B-13 Schottky Diode Equivalent & Substitute Parts

Part Overview

The B130B-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 30 V DC reverse voltage and 1 A average rectified current in a surface mount SMB (DO-214AA) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing production and repair applications. The part exhibits RoHS non-compliance and operates across a junction temperature range of -65°C to 150°C. Equivalent alternatives must maintain the core electrical specifications while offering improved availability and compliance status.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 30 V
Capacitance @ Vr, F	110	pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitution of the B130B-13 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V minimum (higher ratings acceptable)
Current - Average Rectified (Io): 1 A minimum (higher ratings acceptable)
Voltage - Forward (Vf) (Max) @ If: 500 mV maximum at rated current
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AA, SMB (or equivalent surface mount packages)

Secondary Considerations:

Current - Reverse Leakage @ Vr: 500 µA maximum at 30 V
Capacitance @ Vr, F: 110 pF nominal at 4V, 1MHz
Operating Temperature - Junction: -65°C to 150°C minimum range

Substitute parts are grouped into three categories: parametric equivalents (identical electrical specifications with improved packaging or compliance), manufacturer-recommended alternatives (equivalent performance with different package formats), and functional substitutes (higher current ratings in the same package for design flexibility).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Package	Product Status	RoHS Status
B130B-13	Diodes Incorporated	30	1	500 @ 1A	DO-214AA, SMB	Discontinued	Non-compliant
B130B-13-F	Diodes Incorporated	30	1	500 @ 1A	DO-214AA, SMB	Active	ROHS3 Compliant
CMSH1-40 TR13 PBFREE	Central Semiconductor Corp	40	1	500 @ 1A	DO-214AC, SMA	Active	ROHS3 Compliant
PMEG3010BEP,115	Nexperia USA Inc.	30	1	450 @ 1A	SOD-128	Active	ROHS3 Compliant
PMEG3010EP,115	Nexperia USA Inc.	30	1	360 @ 1A	SOD-128	Active	ROHS3 Compliant
SK13-LTP	Micro Commercial Co	30	1	500 @ 1A	DO-214AA, SMB	Not For New Designs	ROHS3 Compliant
SK33B-LTP	Micro Commercial Co	30	3	500 @ 3A	DO-214AA, SMB	Not For New Designs	ROHS3 Compliant
SK43BL-TP	Micro Commercial Co	30	4	450 @ 4A	DO-214AA, SMB	Not For New Designs	ROHS3 Compliant
STPS130U	STMicroelectronics	30	1	550 @ 1A	DO-214AA, SMB	Active	ROHS3 Compliant
STPS1L30U	Vishay General Semiconductor	30	1	420 @ 1A	DO-214AA, SMB	Obsolete	Non-compliant

Engineering Selection Recommendations

Recommended Primary Substitute: B130B-13-F

The B130B-13-F is the direct parametric equivalent manufactured by Diodes Incorporated. It maintains identical electrical specifications (30 V, 1 A, 500 mV forward voltage) and package format (DO-214AA, SMB) while offering active product status and ROHS3 compliance. This part is available in Tape & Reel packaging with 19,800 units in stock, providing superior availability compared to the discontinued B130B-13.

Recommended Secondary Substitutes for Active Designs:

STPS130U (STMicroelectronics) is an active product with identical voltage and current ratings in the same SMB package. Forward voltage is specified at 550 mV, representing a 10% increase over the B130B-13 specification. This part carries ROHS3 compliance and 16,717 units in stock.

PMEG3010EP,115 (Nexperia USA Inc.) offers improved forward voltage performance at 360 mV @ 1 A in a SOD-128 package. This part is active, ROHS3 compliant, and suitable for applications where reduced power dissipation is beneficial. Package change from SMB to SOD-128 requires PCB layout modification.

Functional Alternatives for Higher Current Applications:

SK43BL-TP (Micro Commercial Co) provides 4 A current rating in the same DO-214AA, SMB package with 30 V reverse voltage rating. This part is suitable for designs requiring current margin above the 1 A specification. Forward voltage is 450 mV @ 4 A. Product status is "Not For New Designs," limiting use to legacy applications.

SK33B-LTP (Micro Commercial Co) provides 3 A current rating in the same package. Product status is "Not For New Designs."

Parts to Avoid:

STPS1L30U (Vishay) is classified as obsolete with RoHS non-compliance, matching the status of the original B130B-13. This part does not resolve the compliance or availability issues.

CMSH1-40 TR13 PBFREE (Central Semiconductor Corp) features a higher 40 V reverse voltage rating but uses a different package format (DO-214AC, SMA instead of DO-214AA, SMB), requiring PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can B130B-13-F be used as a direct replacement for B130B-13?

A: Yes. The B130B-13-F is a parametric equivalent with identical electrical specifications (30 V, 1 A, 500 mV forward voltage) and the same DO-214AA, SMB package. The primary differences are active product status, ROHS3 compliance, and improved availability. No circuit modifications are required.

Q: What is the difference between SMB and SMA packages?

A: SMB (DO-214AA) and SMA (DO-214AC) are different surface mount package formats with different footprints and pin configurations. Direct substitution between these packages requires PCB layout modification. The CMSH1-40 TR13 PBFREE uses SMA packaging and cannot be used without redesign.

Q: Why do some substitute parts have higher current ratings (3 A or 4 A) than the original 1 A specification?

A: Higher current-rated parts (SK33B-LTP at 3 A, SK43BL-TP at 4 A) maintain the same 30 V reverse voltage and SMB package but provide additional current capacity. These parts are functionally compatible with 1 A applications and offer design margin. However, both are classified as "Not For New Designs," limiting their use to legacy or repair applications.

Q: What does "Not For New Designs" product status mean?

A: "Not For New Designs" indicates that the manufacturer no longer recommends the part for new circuit designs, though existing inventory may remain available. These parts are suitable for repair and maintenance of existing equipment but should not be selected for new product development. Examples include SK13-LTP, SK33B-LTP, and SK43BL-TP.

Q: How does forward voltage affect circuit performance?

A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. The B130B-13 specifies 500 mV @ 1 A. Alternatives such as PMEG3010EP,115 (360 mV) exhibit lower forward voltage, reducing power dissipation and heat generation. Conversely, STPS130U (550 mV) exhibits higher forward voltage. Selection depends on circuit power budget and thermal requirements.

Q: Are all substitute parts RoHS compliant?

A: No. The original B130B-13 and STPS1L30U are RoHS non-compliant. All other listed substitutes (B130B-13-F, CMSH1-40 TR13 PBFREE, PMEG3010BEP,115, PMEG3010EP,115, SK13-LTP, SK33B-LTP, SK43BL-TP, STPS130U) are ROHS3 compliant. RoHS compliance is mandatory for many applications and markets.

Q: What is the significance of the SOD-128 package used by Nexperia parts?

A: SOD-128 is a compact surface mount package different from the SMB (DO-214AA) format. While electrically equivalent, SOD-128 requires different PCB footprints and assembly processes. Selection of Nexperia PMEG3010 series parts necessitates PCB redesign but offers improved forward voltage characteristics and active product status.

Q: Can STPS1L30U be used as a substitute despite being obsolete?

A: STPS1L30U is classified as obsolete with RoHS non-compliance, matching the status of the original B130B-13. While electrically compatible, this part does not resolve availability or compliance issues and should not be selected for new applications or redesigns.

Q: What packaging options are available for B130B-13 substitutes?

A: Substitute parts are available in three packaging formats: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel, and bulk quantities. B130B-13-F is available in Tape & Reel with 19,800 units in stock. PMEG3010EP,115 is available in Cut Tape & Digi-Reel format with 12,250 units. Packaging selection depends on production volume and assembly requirements.

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