US2K-TP General Purpose Rectifier Diode 800V 2A Equivalent & Substitute Parts

Part Overview

The US2K-TP is a general purpose rectifier diode manufactured by Micro Commercial Co, rated for 800V DC reverse voltage and 2A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for legacy system maintenance, repair operations, and design transitions to active product lines that meet current manufacturing and compliance standards.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.65 V @ 2 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	-
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	5	µA @ 800 V
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-50 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the US2K-TP is determined by the following critical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 800 V minimum
Package / Case: DO-214AA or DO-214BA surface mount packages
Mounting Type: Surface Mount
RoHS3 Compliance

Allowable Variation Criteria:

Current - Average Rectified (Io): Substitute parts must equal or exceed 2A requirement, or operate at reduced current levels within circuit design margins
Voltage - Forward (Vf): Lower forward voltage is acceptable; higher values require thermal analysis
Reverse Recovery Time (trr): Faster recovery (lower trr) is acceptable; slower recovery requires circuit validation
Operating Temperature Range: Substitute must cover minimum -50°C to 150°C junction temperature range
Packaging Format: Tape & Reel (TR) and Cut Tape (CT) are both acceptable for surface mount assembly

Non-Critical Parameters:

Reverse Leakage Current: Minor variations acceptable within 5-20 µA range at rated voltage
Capacitance: Variations acceptable for general purpose rectification applications

Parameter Comparison

Parameter	US2K-TP (Main)	RS2K-E3/5BT	S2K-13-F	UFS180JE3/TR13
Manufacturer	Micro Commercial Co	Vishay General Semiconductor	Diodes Incorporated	Microchip Technology
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	2 A	1.5 A	1.5 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.65 V @ 2 A	1.3 V @ 1.5 A	1.15 V @ 1.5 A	1.2 V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery >500ns	Fast Recovery ≤ 500ns
Reverse Recovery Time (trr)	75 ns	500 ns	Not specified	60 ns
Current - Reverse Leakage @ Vr	5 µA @ 800 V	5 µA @ 800 V	5 µA @ 800 V	20 µA @ 800 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214BA
Operating Temperature - Junction	-50 to 150 °C	-55 to 150 °C	-65 to 150 °C	-55 to 175 °C
Product Status	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: S2K-13-F (Diodes Incorporated)

The S2K-13-F is the preferred substitute for the US2K-TP. Both components share identical 800V reverse voltage rating and DO-214AA SMB package specification. The S2K-13-F is in Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The 1.5A current rating is lower than the original 2A specification; however, this substitution is valid for applications operating at or below 1.5A average rectified current. The S2K-13-F demonstrates superior forward voltage characteristics (1.15 V @ 1.5 A versus 1.65 V @ 2 A), resulting in reduced thermal dissipation. Operating temperature range extends to -65°C minimum, exceeding the original -50°C specification. Inventory availability is substantial at 30,200 pieces.

Secondary Substitute: RS2K-E3/5BT (Vishay General Semiconductor)

The RS2K-E3/5BT maintains 800V reverse voltage and DO-214AA SMB package compatibility. This component is Active status with ROHS3 compliance. The 1.5A current rating requires current derating from the original 2A specification. Forward voltage is 1.3 V @ 1.5 A, providing improved thermal performance. Reverse recovery time is 500 ns, which is within the fast recovery classification. Operating temperature range is -55 to 150°C. Packaging is Cut Tape (CT) format. Inventory is 2,591 pieces.

Tertiary Substitute: UFS180JE3/TR13 (Microchip Technology)

The UFS180JE3/TR13 is suitable only for applications requiring 1A or lower average rectified current. This component maintains 800V reverse voltage rating and surface mount technology. Package is DO-214BA, which differs from the original DO-214AA but maintains SMB form factor compatibility in most PCB layouts. The component is Active status with ROHS3 compliance. Reverse recovery time is 60 ns, the fastest among all substitutes. Operating temperature range extends to 175°C maximum junction temperature. Reverse leakage current is 20 µA @ 800 V, higher than other options. Inventory is 3,756 pieces.

Current Derating Considerations:

Applications originally designed for 2A operation must be re-evaluated if substituting with 1.5A or 1A rated parts. Thermal analysis and circuit margin verification are required to confirm adequate performance at reduced current ratings.

Frequently Asked Questions (FAQ)

Q: Can the S2K-13-F directly replace the US2K-TP in a 2A application?

A: No. The S2K-13-F is rated for 1.5A maximum average rectified current, while the US2K-TP is rated for 2A. Direct substitution in a 2A application would exceed the component's current rating. The substitution is valid only for applications operating at 1.5A or below.

Q: What is the difference between DO-214AA and DO-214BA packages?

A: Both are surface mount SMB packages with identical footprint dimensions and mounting compatibility. The primary difference is internal die size and current handling capability. The UFS180JE3/TR13 uses DO-214BA and is rated for 1A, while the US2K-TP and other substitutes use DO-214AA for higher current ratings. PCB layout compatibility is maintained between these packages.

Q: Why does the S2K-13-F have lower forward voltage than the US2K-TP?

A: Forward voltage varies with semiconductor manufacturing process, die design, and current rating. The S2K-13-F operates at 1.15 V @ 1.5 A, while the US2K-TP operates at 1.65 V @ 2 A. Lower forward voltage at lower current is typical and results in reduced power dissipation and thermal generation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (RS2K-E3/5BT, S2K-13-F, UFS180JE3/TR13) are ROHS3 compliant, matching the original US2K-TP compliance status.

Q: What is the significance of reverse recovery time differences?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference (EMI) characteristics. The US2K-TP has 75 ns trr, while RS2K-E3/5BT has 500 ns. Faster recovery (lower trr) reduces switching losses in high-frequency applications. For general purpose rectification at line frequency (50/60 Hz), trr differences are not critical.

Q: Can I use the UFS180JE3/TR13 in place of the US2K-TP?

A: The UFS180JE3/TR13 is suitable only for applications requiring 1A or lower average rectified current. It maintains 800V reverse voltage and surface mount compatibility. However, the 1A current rating represents a 50% reduction from the original 2A specification, requiring circuit re-evaluation.

Q: What packaging formats are available for these substitutes?

A: S2K-13-F is supplied in Tape & Reel (TR) format. RS2K-E3/5BT is supplied in Cut Tape (CT) format. UFS180JE3/TR13 is supplied in Cut Tape (CT) and Digi-Reel® format. All formats are compatible with automated surface mount assembly equipment.

Q: Is the US2K-TP still available for new purchases?

A: The US2K-TP is classified as "Not For New Designs" and has 3,863 pieces in stock. This status indicates the component is in end-of-life phase. For new designs and long-term supply assurance, substitution to an Active product (S2K-13-F, RS2K-E3/5BT, or UFS180JE3/TR13) is recommended.

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