B140AF-13 Equivalent & Substitute Parts

Part Overview

The B140AF-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 40 V DC reverse voltage and 1 A average rectified current in a surface mount SMAF package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the Schottky diode rectifier category. Alternative sources become necessary for supply chain continuity, inventory availability, or procurement optimization while maintaining identical functional performance.

Substiute Parts

B140AF-13

Diodes IncorporatedIn Stock: 10129B140AF-13 Datasheet

Current PartRFQ

SB14AFC_R1_00001

Panjit International Inc.In Stock: 6946SB14AFC_R1_00001 Datasheet

Parametric EquivalentRFQ

SS14FL-TP

Micro Commercial CoIn Stock: 35785SS14FL-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the B140AF-13 are qualified based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 500 mV @ 1 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Mounting Type: Surface Mount
• Package / Case: DO-221AC, SMA Flat Leads
• Operating Temperature - Junction: -55°C to 150°C
• Technology: Schottky

Secondary Compliance Criteria:

• RoHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Substitute parts identified in this reference maintain all primary electrical and mechanical parameters. Variations in secondary parameters such as reverse leakage current and junction capacitance remain within acceptable tolerances for Schottky rectifier applications while preserving core functional performance.

Parameter Comparison

Engineering Selection Recommendations

All three components—B140AF-13, SB14AFC_R1_00001, and SS14FL-TP—are Active product status and meet RoHS3 compliance requirements. Each part carries MSL 1 (Unlimited) moisture sensitivity classification and REACH Unaffected status, confirming suitability for standard manufacturing and storage environments.

B140AF-13 (Diodes Incorporated): Primary reference part with 10,053 units in stock. Establishes baseline electrical and mechanical specifications.

SB14AFC_R1_00001 (Panjit International Inc.): Parametric equivalent with 6,848 units in stock. Reverse leakage current and junction capacitance match the primary part exactly. Supplier device package designation SMAF-C indicates minor packaging variant within DO-221AC family.

SS14FL-TP (Micro Commercial Co): Parametric equivalent with 35,771 units in stock. Reverse leakage current is 500 µA (2.5× higher than primary part) and junction capacitance is 110 pF (2.2× higher than primary part). These variations remain within acceptable operating ranges for Schottky rectifier applications while maintaining all critical voltage, current, and thermal specifications.

Selection among these three parts depends on procurement availability, supply chain requirements, and application-specific tolerance for secondary parameter variations.

Frequently Asked Questions (FAQ)

Q: Can SB14AFC_R1_00001 be used as a direct replacement for B140AF-13?

A: Yes. SB14AFC_R1_00001 matches all critical electrical parameters (40 V reverse voltage, 1 A average rectified current, 500 mV forward voltage, fast recovery speed) and mechanical specifications (DO-221AC package, surface mount). Reverse leakage current and junction capacitance are identical to the primary part.

Q: What is the difference between SS14FL-TP and B140AF-13?

A: SS14FL-TP maintains identical voltage, current, and thermal ratings. The reverse leakage current is 500 µA compared to 200 µA in B140AF-13, and junction capacitance is 110 pF compared to 50 pF. These secondary parameters do not affect core rectification function in standard applications.

Q: Are all three parts in the same physical package?

A: Yes. All three parts use DO-221AC package with SMA flat leads, enabling direct PCB footprint compatibility. Supplier device package designations (SMAF, SMAF-C, DO-221AC SMA-FL) refer to the same mechanical form factor.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. B140AF-13, SB14AFC_R1_00001, and SS14FL-TP are all RoHS3 compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity classification.

Q: What is the operating temperature range for these parts?

A: All three parts operate across a junction temperature range of -55°C to 150°C, supporting identical thermal performance in end-use applications.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: All three parts meet the fast recovery speed specification (≤ 500ns, > 200mA). Interchangeability in high-frequency applications depends on application-specific requirements for reverse leakage current and junction capacitance. SS14FL-TP exhibits higher capacitance (110 pF) which may affect switching performance in circuits sensitive to parasitic capacitance.

Q: What inventory levels are available for each part?

A: B140AF-13 has 10,053 units in stock, SB14AFC_R1_00001 has 6,848 units, and SS14FL-TP has 35,771 units available as new original stock.