B270-13 Schottky Diode Equivalent & Substitute Parts

Part Overview

The B270-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 70 V DC reverse voltage and 2 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. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with allowable parameter variations within the same product category.

Substiute Parts

B270-13

Diodes IncorporatedIn Stock: 831B270-13 Datasheet

Current PartRFQ

B270-13-F

Diodes IncorporatedIn Stock: 47144B270-13-F Datasheet

DirectRFQ

SS28

onsemiIn Stock: 6097SS28 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B270-13 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Schottky diode technology
• Voltage rating: minimum 70 V DC reverse voltage (equal or higher)
• Current rating: minimum 2 A average rectified current (equal or higher)
• Forward voltage drop: within acceptable circuit tolerance
• Reverse leakage current: within acceptable circuit tolerance
• Fast recovery speed characteristic (≤ 500ns, > 200mA)

Mechanical Compatibility Criteria:

• Surface Mount package type
• DO-214AA (SMB) physical form factor
• Identical pin configuration and footprint

Compliance Criteria:

• RoHS compliance status
• Moisture Sensitivity Level (MSL) rating
• REACH and ECCN classification

Parts identified as direct equivalents maintain all electrical parameters within specification. Parts identified as functional substitutes may have higher voltage ratings or different leakage characteristics but remain functionally compatible within the same application category.

Parameter Comparison

Engineering Selection Recommendations

B270-13-F (Diodes Incorporated): This part is the direct electrical and mechanical equivalent of the B270-13, with identical voltage, current, and forward voltage specifications. The B270-13-F is currently in active product status with ROHS3 compliance and is available in Tape & Reel packaging. This part is the primary substitute for discontinued B270-13 applications. The higher inventory availability (47,113 pieces) supports production continuity.

SS28 (onsemi): This part provides functional substitution with a higher voltage rating (80 V versus 70 V) and identical current rating (2 A). The SS28 maintains fast recovery speed and Surface Mount SMB package compatibility. However, the SS28 carries a "Not For New Designs" product status designation and has a reduced operating temperature range (-65 to 125°C versus -65 to 150°C). The SS28 is suitable for legacy system maintenance where the higher voltage rating does not create circuit conflicts. ROHS3 compliance is confirmed.

Selection between B270-13-F and SS28 depends on application requirements: B270-13-F is recommended for new designs and production applications requiring active product support; SS28 is acceptable for existing systems where the higher voltage rating and reduced temperature range present no functional constraints.

Frequently Asked Questions (FAQ)

Q: Can B270-13-F be used as a direct replacement for B270-13?

A: Yes. The B270-13-F is electrically and mechanically identical to the B270-13, with matching voltage (70 V), current (2 A), forward voltage (790 mV @ 2 A), and package specifications (DO-214AA SMB). The primary difference is product status: B270-13-F is active while B270-13 is discontinued.

Q: What is the difference between B270-13 and B270-13-F packaging?

A: The B270-13 is supplied in bulk packaging, while B270-13-F is supplied in Tape & Reel (TR) format. Both use identical DO-214AA SMB package form factors and are compatible with standard surface mount assembly equipment.

Q: Can SS28 replace B270-13 in all applications?

A: SS28 provides functional substitution for applications where the higher voltage rating (80 V) does not create circuit conflicts. The SS28 has identical current rating (2 A) and fast recovery speed. However, the reduced operating temperature range (-65 to 125°C versus -65 to 150°C) and "Not For New Designs" status limit its use to legacy system maintenance.

Q: What is the significance of the forward voltage difference between B270-13 and SS28?

A: B270-13 has a maximum forward voltage of 790 mV @ 2 A, while SS28 has 850 mV @ 2 A. This 60 mV difference may affect circuit efficiency and heat dissipation in applications with tight voltage budgets. Verify circuit tolerance before substitution.

Q: Are B270-13-F and SS28 both RoHS compliant?

A: Yes. Both B270-13-F and SS28 carry ROHS3 compliance certification. The original B270-13 is RoHS non-compliant, making B270-13-F the preferred substitute for applications requiring RoHS compliance.

Q: What is the reverse leakage current difference between B270-13 and SS28?

A: B270-13 has 7 mA reverse leakage @ 70 V, while SS28 has 400 µA reverse leakage @ 80 V. The SS28 exhibits significantly lower leakage current, which may improve circuit performance in low-power or high-impedance applications.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes, all three parts (B270-13, B270-13-F, and SS28) use identical DO-214AA SMB package form factors with matching pin configurations and footprints. PCB designs require no modification for substitution.