USB260HE3/5BT Equivalent & Substitute Parts

Part Overview

The USB260HE3/5BT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 600 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device features fast recovery characteristics with a 30 ns reverse recovery time and operates across a junction temperature range of -55°C to 150°C.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.6 V @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	30 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the USB260HE3/5BT is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AA, SMB (physical and electrical compatibility)
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Substitution Categories:

Direct Equivalents (Identical Electrical and Mechanical Specifications): Parts that match all primary criteria with identical or superior electrical performance and the same package type. These include Vishay USB260 series variants with different packaging configurations (Tape & Reel or Cut Tape).

Parametric Equivalents (Same Electrical Performance, Different Packaging): Parts from Vishay USB260 series that maintain identical electrical specifications but differ in packaging format (Cut Tape vs. Tape & Reel). These are functionally interchangeable with packaging-dependent inventory considerations.

Manufacturer Recommended Alternatives (Higher Ratings, Same Package): Parts from alternative manufacturers (Taiwan Semiconductor Corporation, Diodes Incorporated, STMicroelectronics) that meet or exceed the electrical requirements in the same DO-214AA SMB package. These may have higher voltage or current ratings, which are acceptable for applications designed for the USB260HE3/5BT.

Partial Equivalents (Lower Current Rating): STMicroelectronics STTH1 series parts rated for 1 A instead of 2 A. These are suitable only for applications requiring less than 1 A average rectified current and are not direct substitutes for full 2 A applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	trr	Package	Product Status	Packaging Type
USB260HE3/5BT	Vishay	600 V	2 A	1.6 V @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-214AA, SMB	Obsolete	Bulk
USB260HM3/5BT	Vishay	600 V	2 A	1.6 V @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-214AA, SMB	Active	Tape & Reel (TR)
USB260-M3/52T	Vishay	600 V	2 A	1.6 V @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-214AA, SMB	Active	Cut Tape (CT)
USB260-M3/5BT	Vishay	600 V	2 A	1.6 V @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-214AA, SMB	Active	Tape & Reel (TR)
USB260HM3/52T	Vishay	600 V	2 A	1.6 V @ 2 A	Fast Recovery ≤ 500ns	30 ns	DO-214AA, SMB	Active	Tape & Reel (TR)
S3KB	Taiwan Semiconductor	800 V	3 A	1.15 V @ 3 A	Standard Recovery >500ns	1.5 µs	DO-214AA, SMB	Active	Cut Tape (CT) & Digi-Reel®
S3KB-13-F	Diodes Incorporated	800 V	3 A	1.15 V @ 3 A	Standard Recovery >500ns	Not Specified	DO-214AA, SMB	Active	Tape & Reel (TR)
STTH1R06U	STMicroelectronics	600 V	1 A	1.7 V @ 1 A	Fast Recovery ≤ 500ns	45 ns	DO-214AA, SMB	Active	Cut Tape (CT) & Digi-Reel®
STTH3L06U	STMicroelectronics	600 V	3 A	1.3 V @ 3 A	Fast Recovery ≤ 500ns	85 ns	DO-214AA, SMB	Active	Cut Tape (CT) & Digi-Reel®
STTH2L06U	STMicroelectronics	600 V	2 A	1.3 V @ 2 A	Fast Recovery ≤ 500ns	85 ns	DO-214AA, SMB	Active	Cut Tape (CT) & Digi-Reel®
STTH1L06U	STMicroelectronics	600 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	80 ns	DO-214AA, SMB	Active	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended for Obsolescence Mitigation):

The Vishay USB260 series variants (USB260HM3/5BT, USB260-M3/52T, USB260-M3/5BT, USB260HM3/52T) are direct electrical and mechanical equivalents to the USB260HE3/5BT. All maintain identical voltage, current, and speed specifications with the same DO-214AA SMB package. These parts are in active product status and provide seamless substitution. Selection among these variants depends on packaging requirements: Tape & Reel (TR) for automated assembly or Cut Tape (CT) for manual placement. The USB260HM3/5BT and USB260HM3/52T variants include AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability.

Tier 2 - Parametric Equivalents (Higher Performance):

The STMicroelectronics STTH2L06U matches the USB260HE3/5BT in voltage (600 V) and current (2 A) ratings with identical fast recovery speed classification. This part is in active status and available in Cut Tape & Digi-Reel® packaging. The forward voltage is lower (1.3 V @ 2 A vs. 1.6 V @ 2 A), resulting in reduced power dissipation. The reverse recovery time is longer (85 ns vs. 30 ns), which may affect high-frequency switching applications but is acceptable for standard rectification circuits.

Tier 3 - Higher-Rated Alternatives (Derating Applications):

The Taiwan Semiconductor S3KB and Diodes Incorporated S3KB-13-F are rated for 800 V and 3 A, exceeding the USB260HE3/5BT specifications. These parts are suitable for applications where component derating is required or where higher voltage/current margins are necessary. Both are in active status. The trade-off is standard recovery speed (>500ns) versus fast recovery, making these suitable for lower-frequency rectification but not for high-speed switching applications.

Tier 4 - Reduced Current Alternatives (Current-Limited Applications Only):

The STMicroelectronics STTH1R06U and STTH1L06U are rated for 1 A average rectified current. These are suitable only for applications requiring less than 1 A and are not direct substitutes for the full 2 A rating of the USB260HE3/5BT.

Compliance Considerations:

All recommended substitutes are ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the original part. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all alternatives, indicating no special moisture handling requirements.

Frequently Asked Questions (FAQ)

Q: Can I use USB260HM3/5BT as a direct replacement for USB260HE3/5BT?

A: Yes. The USB260HM3/5BT is a direct electrical and mechanical equivalent with identical voltage (600 V), current (2 A), and speed (fast recovery ≤ 500ns) specifications. The primary difference is packaging format (Tape & Reel vs. bulk) and product status (Active vs. Obsolete). The USB260HM3/5BT includes AEC-Q101 automotive qualification, providing additional reliability assurance.

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

A: Cut Tape (CT) packaging provides components on a continuous tape that is cut to length, suitable for manual placement or small-volume assembly. Tape & Reel (TR) packaging provides components on a continuous reel, optimized for automated pick-and-place assembly equipment. Both formats contain identical components; the choice depends on assembly process requirements and volume.

Q: Can I substitute STTH2L06U for USB260HE3/5BT?

A: Yes, with considerations. The STTH2L06U matches the voltage (600 V) and current (2 A) ratings and maintains fast recovery speed classification. However, the reverse recovery time is longer (85 ns vs. 30 ns). This substitution is acceptable for standard rectification applications but may not be suitable for high-frequency switching circuits where the faster recovery time of the original part is critical.

Q: Why would I choose S3KB over USB260HE3/5BT equivalents?

A: The S3KB provides higher voltage (800 V) and current (3 A) ratings, allowing component derating in applications with voltage or current margin requirements. However, it uses standard recovery speed (>500ns) instead of fast recovery, making it unsuitable for high-speed switching applications. Selection depends on circuit requirements and design margins.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the environmental compliance of the USB260HE3/5BT.

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

A: This specification indicates the diode exhibits fast recovery characteristics with a reverse recovery time of 500 nanoseconds or less when switching currents greater than 200 mA. This classification is important for high-frequency rectification and switching applications where slow recovery can cause excessive reverse current and power loss.

Q: Can I use STTH1R06U if my application only requires 1 A?

A: Yes. If your circuit design requires only 1 A average rectified current, the STTH1R06U is a suitable substitute. It maintains the 600 V voltage rating and fast recovery speed classification. However, it is not a substitute for applications requiring the full 2 A rating of the USB260HE3/5BT.

Q: What is the significance of AEC-Q101 qualification on USB260HM3/5BT and USB260HM3/52T?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. Parts with this qualification have undergone additional reliability testing and are approved for automotive applications. If your application requires automotive-grade components, select USB260HM3/5BT or USB260HM3/52T over non-qualified alternatives.

Q: How do I choose between USB260-M3/52T and USB260-M3/5BT?

A: Both parts are electrically identical. The difference is packaging format: USB260-M3/52T is Cut Tape (CT) and USB260-M3/5BT is Tape & Reel (TR). Choose based on your assembly process: Cut Tape for manual or semi-automated placement, Tape & Reel for fully automated pick-and-place equipment.

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