MBR860S Equivalent & Substitute Parts

Part Overview

The MBR860S is an active Schottky rectifier diode manufactured by SMC Diode Solutions, designed for surface mount applications in the TO-277B package. This component is specified for 60 V reverse voltage operation with an 8 A average rectified current rating. The part is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1) and is currently in active production status with 5381 pieces available in inventory.

Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where the primary part may be unavailable or where alternative electrical characteristics better suit specific circuit demands.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	650 mV @ 8 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	1	mA @ 60 V
Capacitance @ Vr, F	400	pF @ 5V, 1MHz
Package / Case	TO-277, 3-PowerDFN	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the MBR860S is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 60 V
Package / Case: TO-277, 3-PowerDFN (TO-277B supplier device package)
Technology: Schottky
Operating Temperature Range: -55°C to 150°C
Mounting Type: Surface Mount

Allowable Variation Parameters:

Current - Average Rectified (Io): Substitute parts with equal or greater current rating are acceptable
Voltage - Forward (Vf) (Max): Substitute parts with equal or lower forward voltage are acceptable
Current - Reverse Leakage @ Vr: Substitute parts with equal or lower reverse leakage are acceptable
Capacitance @ Vr, F: Substitute parts with equal or lower capacitance are acceptable

The DST560S-A from Littelfuse Inc. meets all mandatory matching parameters. However, the current rating is reduced from 8 A to 5 A, which represents a downgrade in current-handling capability. This substitution is valid only for applications where the circuit current demand does not exceed 5 A.

Parameter Comparison

Parameter	MBR860S (SMC)	DST560S-A (Littelfuse)	Compatibility
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	Match
Current - Average Rectified (Io)	8 A	5 A	Downgrade
Voltage - Forward (Vf) (Max) @ If	650 mV @ 8 A	750 mV @ 5 A	Higher Vf
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Match
Current - Reverse Leakage @ Vr	1 mA @ 60 V	700 µA @ 60 V	Better
Capacitance @ Vr, F	400 pF @ 5V, 1MHz	314 pF @ 5V, 1MHz	Better
Package / Case	TO-277, 3-PowerDFN	TO-277, 3-PowerDFN	Match
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	Match
Technology	Schottky	Schottky	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Match

Engineering Selection Recommendations

MBR860S (SMC Diode Solutions) is the primary selection for applications requiring the full 8 A current rating. This part is active in production with substantial inventory availability (5381 pieces). It carries ROHS3 compliance and unlimited moisture sensitivity rating, suitable for standard manufacturing and storage environments.

DST560S-A (Littelfuse Inc.) is a valid substitute only for applications where the circuit current demand does not exceed 5 A. This part carries automotive-grade qualification (AEC-Q101) and is ROHS3 compliant. The DST560S-A exhibits superior reverse leakage characteristics (700 µA versus 1 mA) and lower junction capacitance (314 pF versus 400 pF), which may provide advantages in specific low-current or high-frequency applications. Inventory availability is higher (12100 pieces).

Selection between these parts must be based on actual circuit current requirements. The MBR860S is required for applications exceeding 5 A. The DST560S-A is suitable only where maximum circuit current remains below 5 A and where the automotive qualification is beneficial or required.

Frequently Asked Questions (FAQ)

Q: Can the DST560S-A replace the MBR860S in all applications?

A: No. The DST560S-A has a maximum average rectified current rating of 5 A, compared to 8 A for the MBR860S. Substitution is valid only for applications where the circuit current demand does not exceed 5 A. Applications requiring currents between 5 A and 8 A must use the MBR860S.

Q: Are the packages physically identical?

A: Yes. Both parts use the TO-277, 3-PowerDFN package with TO-277B supplier device package designation. PCB footprints and mounting procedures are identical.

Q: What is the difference in forward voltage between these parts?

A: The MBR860S has a maximum forward voltage of 650 mV at 8 A, while the DST560S-A has a maximum forward voltage of 750 mV at 5 A. The DST560S-A exhibits higher forward voltage drop. This difference affects power dissipation and thermal performance in the circuit.

Q: Does the DST560S-A have automotive qualification?

A: Yes. The DST560S-A carries AEC-Q101 automotive qualification. The MBR860S does not list automotive qualification in the provided specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the MBR860S and DST560S-A are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1).

Q: Which part has better reverse leakage characteristics?

A: The DST560S-A has lower reverse leakage at 700 µA @ 60 V, compared to 1 mA @ 60 V for the MBR860S. Lower reverse leakage reduces standby current and improves circuit efficiency in certain applications.

Q: Can I use the MBR860S as a substitute for the DST560S-A?

A: Yes. The MBR860S can be used in place of the DST560S-A in all applications. The MBR860S has higher current rating (8 A versus 5 A), lower forward voltage (650 mV versus 750 mV), and identical package and temperature specifications. No circuit modifications are required.

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