B380-13 Schottky Diode 80V 3A SMC Equivalent & Substitute Parts

Part Overview

The B380-13 is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 80V DC reverse voltage and 3A average rectified current in a Surface Mount SMC (DO-214AB) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives for ongoing production and repair applications. Substitute parts must maintain electrical performance within the specified voltage, current, and thermal operating ranges while accommodating packaging and compliance requirements.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	80	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	790	mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500	µA @ 80 V
Capacitance @ Vr, F	100	pF @ 4V, 1MHz
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 125	°C

Substitute Part Grouping Explanation

Substitution of the B380-13 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Equivalence Criteria:

Voltage rating: 80V DC reverse voltage (Vr)
Current rating: 3A average rectified current (Io)
Technology: Schottky rectifier diode
Package: DO-214AB surface mount form factor
Speed classification: Fast recovery ≤ 500ns

Secondary Compatibility Parameters:

Forward voltage drop (Vf): Maximum 790 mV at 3A (tolerance range: 790–850 mV acceptable for most applications)
Reverse leakage current: 50–500 µA at 80V (lower values indicate superior performance)
Junction capacitance: 100–300 pF at 4V, 1MHz (higher values acceptable for non-RF applications)
Operating temperature range: Minimum -55°C to +125°C (extended ranges acceptable)

Package Considerations:

SMC (DO-214AB) package is the primary form factor
SMA (DO-214AC) package represents a mechanical variant with identical electrical performance but different footprint
Packaging format (Cut Tape, Tape & Reel, bulk) does not affect electrical substitution

Substitute parts meeting all primary criteria and falling within secondary parameter tolerances are classified as direct electrical equivalents.

Parameter Comparison

Parameter	B380-13	B380-13-F	B380Q-13-F	MB38_R1_00001	SK38-TP	SS38
Manufacturer	Diodes Inc.	Diodes Inc.	Diodes Inc.	Panjit Int'l	Micro Commercial	MDD
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Vr (Max) [V]	80	80	80	80	80	80
Io [A]	3	3	3	3	3	3
Vf (Max) @ If [mV]	790 @ 3A	790 @ 3A	790 @ 3A	800 @ 3A	850 @ 3A	—
Speed	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns
Ir @ Vr [µA]	500 @ 80V	500 @ 80V	500 @ 80V	50 @ 80V	500 @ 80V	500 @ 80V
Capacitance @ Vr [pF]	100 @ 4V, 1MHz	100 @ 4V, 1MHz	100 @ 4V, 1MHz	140 @ 4V, 1MHz	250 @ 4V, 1MHz	300 @ 4V, 1MHz
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AC, SMA
Tj (Operating) [°C]	-55 to 125	-55 to 125	-55 to 125	-65 to 175	-55 to 150	-55 to 150
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Not For New Designs	Active

Engineering Selection Recommendations

Recommended Primary Substitute: B380-13-F

The B380-13-F is the direct successor to the B380-13, manufactured by Diodes Incorporated. It maintains identical electrical specifications (80V, 3A, 790 mV forward voltage, SMC package) while achieving ROHS3 compliance and active product status. This part is available in Cut Tape and Digi-Reel packaging formats and represents the lowest-risk substitution path for existing B380-13 designs.

Recommended Automotive-Grade Alternative: B380Q-13-F

The B380Q-13-F is qualified to AEC-Q101 automotive standards and carries Diodes Incorporated's automotive-grade designation. Electrical parameters are identical to B380-13-F. This part is supplied in Tape & Reel format and is suitable for applications requiring automotive qualification or extended reliability documentation. Inventory availability is lower than B380-13-F.

Alternative Cross-Manufacturer Substitute: MB38_R1_00001

The MB38_R1_00001 (Panjit International) provides equivalent 80V/3A performance with superior reverse leakage characteristics (50 µA versus 500 µA) and extended operating temperature range (-65°C to +175°C). Forward voltage is 800 mV at 3A, representing a 10 mV increase over the B380-13 specification. This part is ROHS3 compliant and active. Capacitance is 140 pF, within acceptable tolerance. Selection of this part requires verification that the 10 mV forward voltage increase does not impact circuit performance.

Not Recommended for New Designs: SK38-TP

The SK38-TP (Micro Commercial Co) meets electrical specifications but carries a "Not For New Designs" product status designation. Forward voltage is elevated at 850 mV (60 mV above specification), and capacitance is 250 pF. This part should be used only for legacy system maintenance where no alternative is available.

Package Variant: SS38

The SS38 (MDD) is electrically equivalent but supplied in SMA (DO-214AC) package format rather than SMC (DO-214AB). This represents a different footprint and is suitable only for applications where SMA package compatibility exists. Forward voltage specification is not provided; capacitance is 300 pF.

Frequently Asked Questions (FAQ)

Q: Can B380-13-F be used as a direct replacement for B380-13 without circuit modification?

A: Yes. The B380-13-F maintains identical electrical specifications across voltage rating (80V), current rating (3A), forward voltage (790 mV @ 3A), and package form factor (DO-214AB SMC). No circuit modification is required. The primary difference is improved RoHS3 compliance and active product status.

Q: What is the significance of the forward voltage difference between B380-13 and MB38_R1_00001?

A: The MB38_R1_00001 specifies 800 mV forward voltage at 3A, compared to 790 mV for the B380-13. This 10 mV increase is within typical Schottky diode manufacturing tolerance but may impact circuits with tight voltage margin requirements. Verification through circuit simulation or prototype testing is necessary if the application operates near voltage regulation limits.

Q: Why is SK38-TP marked "Not For New Designs"?

A: The "Not For New Designs" designation indicates that the manufacturer (Micro Commercial Co) has discontinued active development and support for this part. While electrically functional, it should not be selected for new product development. Existing designs using SK38-TP should transition to B380-13-F or B380Q-13-F.

Q: Is the SMA package (SS38) compatible with SMC footprints?

A: No. SMA (DO-214AC) and SMC (DO-214AB) are distinct package outlines with different lead configurations and PCB footprints. SS38 cannot be used as a direct replacement on boards designed for SMC packages. Package compatibility must be verified before selection.

Q: What is the advantage of B380Q-13-F over B380-13-F?

A: The B380Q-13-F carries AEC-Q101 automotive qualification, indicating compliance with automotive reliability and testing standards. This qualification is required for automotive applications and provides enhanced documentation of reliability performance. Electrical specifications are identical to B380-13-F. Selection depends on application requirements for automotive certification.

Q: Can the extended temperature range of MB38_R1_00001 (-65°C to +175°C) be used in place of the B380-13 range (-55°C to +125°C)?

A: The extended range of MB38_R1_00001 is a superset of the B380-13 range and provides additional margin for high-temperature applications. However, the primary selection criterion remains the core operating temperature requirement of the circuit. The extended range does not justify selection if the application operates within -55°C to +125°C unless additional thermal margin is specifically required.

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

A: This specification indicates that the diode exhibits fast recovery time (switching speed) of 500 nanoseconds or less when switching currents greater than 200 mA. All substitute parts meet this specification, confirming suitability for high-frequency switching applications.

Q: Is RoHS3 compliance mandatory for B380-13 replacement?

A: RoHS3 compliance is mandatory for products sold into European Union markets and many other regulated regions. The B380-13 is RoHS non-compliant, while all active substitute parts (B380-13-F, B380Q-13-F, MB38_R1_00001, SK38-TP, SS38) are ROHS3 compliant. New designs and production runs should specify RoHS3-compliant alternatives.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Tape & Reel are supply formats that do not affect electrical performance. Cut Tape is supplied in smaller quantities on individual tape strips, while Tape & Reel is supplied on continuous reels for automated assembly. Selection depends on production volume and assembly equipment compatibility, not electrical substitution criteria.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message