SSB43L-E3/5BT Equivalent & Substitute Parts

Part Overview

The SSB43L-E3/5BT is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 30V DC reverse voltage and 4A average rectified current in a surface mount DO-214AA (SMB) package. This part is classified as Active and fully compliant with RoHS3 and REACH regulations. The device is suitable for applications requiring fast recovery characteristics (≤500ns) and low forward voltage drop at rated current.

Equivalent and substitute parts are identified when alternative components share the same or compatible electrical ratings and mechanical packaging, allowing direct or near-direct replacement in circuit designs. Substitutes may vary in current rating, forward voltage characteristics, or leakage current while maintaining the same 30V voltage class and SMB package form factor.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	4	A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 4 A	mV
Speed	Fast Recovery ≤500ns, >200mA (Io)	ns
Current - Reverse Leakage @ Vr	600	µA @ 30V
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-65 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the SSB43L-E3/5BT is determined by the following criteria:

Primary Substitution Criteria (Mandatory Match):

Voltage rating: 30V DC reverse voltage (Vr)
Package type: DO-214AA / SMB surface mount
Technology: Schottky diode
Speed classification: Fast Recovery (≤500ns, >200mA)
Compliance: RoHS3 and REACH status

Secondary Substitution Criteria (Allowable Variation):

Current rating: 4A nominal; lower ratings (3A, 2A, 1A) acceptable for current-limited applications
Forward voltage (Vf): 450mV baseline; variations within ±100mV acceptable depending on application thermal budget
Reverse leakage current: 600µA baseline; higher leakage acceptable in non-critical applications
Operating temperature range: -65°C to 150°C baseline; narrower ranges acceptable if application requirements are met
Packaging format: Cut Tape (CT) or Tape & Reel (TR) formats are interchangeable for component procurement

Substitutes are grouped as follows:

Group 1 - Parametric Equivalents (Identical Ratings):

SSB43L-E3/52T (Vishay) - Identical electrical specifications, Tape & Reel packaging variant
SSB43L-M3/52T (Vishay) - Identical electrical specifications, alternative packaging variant

Group 2 - Manufacturer Recommended Substitutes (Reduced Current Rating):

B130LB-13-F (Diodes Incorporated) - 2A rating, 30V, SMB package
SK33B-LTP (Micro Commercial Co) - 3A rating, 30V, SMB package

Group 3 - Manufacturer Recommended Substitutes (Reduced Current Rating):

STPS130U (STMicroelectronics) - 1A rating, 30V, SMB package
STPS1L30U (Vishay) - 1A rating, 30V, SMB package (Obsolete status)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [mV]	Leakage @ Vr [µA]	Package	Status	RoHS3
SSB43L-E3/5BT	Vishay	30	4	450 @ 4A	600 @ 30V	DO-214AA	Active	Compliant
SSB43L-E3/52T	Vishay	30	4	450 @ 4A	600 @ 30V	DO-214AA	Active	Compliant
SSB43L-M3/52T	Vishay	30	4	450 @ 4A	600 @ 30V	DO-214AA	Active	Compliant
B130LB-13-F	Diodes Inc	30	2	445 @ 2A	1000 @ 30V	DO-214AA	Active	Compliant
SK33B-LTP	Micro Commercial	30	3	500 @ 3A	500 @ 30V	DO-214AA	Not For New Designs	Compliant
STPS130U	STMicroelectronics	30	1	550 @ 1A	10 @ 30V	DO-214AA	Active	Compliant
STPS1L30U	Vishay	30	1	420 @ 1A	200 @ 30V	DO-214AA	Obsolete	Non-compliant

Engineering Selection Recommendations

Direct Replacement (No Design Changes Required):

SSB43L-E3/52T and SSB43L-M3/52T are parametric equivalents to SSB43L-E3/5BT. Both parts share identical electrical specifications (30V, 4A, 450mV forward voltage, 600µA leakage) and the same DO-214AA package. Selection between these three parts depends solely on packaging format availability (Cut Tape vs. Tape & Reel) and procurement inventory. Both substitute parts maintain Active status and full RoHS3 compliance.

Conditional Replacement (Application-Dependent):

B130LB-13-F (Diodes Incorporated, 2A rating) and SK33B-LTP (Micro Commercial, 3A rating) are suitable substitutes only when circuit design permits reduced current handling. These parts maintain the 30V voltage rating and SMB package compatibility. B130LB-13-F is Active and RoHS3 compliant. SK33B-LTP carries "Not For New Designs" status, limiting its use to legacy system maintenance or non-critical applications.

STPS130U (STMicroelectronics, 1A rating) and STPS1L30U (Vishay, 1A rating) are suitable only for applications with 1A or lower current requirements. STPS130U is Active and RoHS3 compliant, making it the preferred choice over STPS1L30U, which is Obsolete and RoHS non-compliant.

Not Recommended:

STPS1L30U should not be selected for new designs due to Obsolete status and RoHS non-compliance. SK33B-LTP should not be selected for new designs due to its "Not For New Designs" designation.

Frequently Asked Questions (FAQ)

Q: Can SSB43L-E3/52T directly replace SSB43L-E3/5BT without circuit modification?

A: Yes. SSB43L-E3/52T is a parametric equivalent with identical electrical ratings (30V, 4A, 450mV Vf, 600µA leakage) and the same DO-214AA package. The difference is packaging format (Tape & Reel vs. Cut Tape). No circuit changes are required.

Q: What is the difference between SSB43L-E3/5BT and SSB43L-M3/52T?

A: Both parts are parametric equivalents with identical electrical specifications. The difference is the packaging format designation. Both are suitable for direct replacement without design modification.

Q: Can B130LB-13-F replace SSB43L-E3/5BT in a 4A application?

A: No. B130LB-13-F is rated for 2A average rectified current, while SSB43L-E3/5BT is rated for 4A. Using B130LB-13-F in a 4A application would exceed the device's current rating and cause thermal stress or failure. B130LB-13-F is suitable only for applications requiring 2A or less.

Q: Is SK33B-LTP suitable for new product designs?

A: No. SK33B-LTP carries a "Not For New Designs" status. While it shares the 30V voltage rating and SMB package, it should be used only for legacy system maintenance or repair of existing products. New designs should use Active-status alternatives such as SSB43L-E3/52T or B130LB-13-F (if current rating permits).

Q: What is the difference between STPS130U and STPS1L30U?

A: Both are 1A, 30V Schottky diodes in SMB packages. STPS130U is Active and RoHS3 compliant. STPS1L30U is Obsolete and RoHS non-compliant. STPS130U should be selected for all new applications.

Q: Can I use STPS130U (1A) instead of SSB43L-E3/5BT (4A)?

A: Only if the circuit design permits operation at 1A or lower current levels. STPS130U cannot handle the full 4A rating of SSB43L-E3/5BT. Substitution requires circuit analysis to confirm that peak and average currents do not exceed 1A.

Q: Are all substitute parts in the same DO-214AA package?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility with SSB43L-E3/5BT.

Q: What does "Fast Recovery ≤500ns, >200mA (Io)" mean?

A: This specifies the diode's switching speed characteristic. The reverse recovery time is 500 nanoseconds or less when switching from forward to reverse bias at currents greater than 200mA. All listed substitutes meet this specification, ensuring compatibility in high-frequency switching applications.

Q: Does packaging format (Cut Tape vs. Tape & Reel) affect electrical performance?

A: No. Packaging format affects only procurement and handling logistics. Electrical specifications and performance are identical between Cut Tape (CT) and Tape & Reel (TR) variants of the same part number base.

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