US5K-TP Equivalent & Substitute Parts

Part Overview

The US5K-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 5 A average rectified current in a Surface Mount SMC (DO-214AB) 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 ongoing maintenance, repair, and legacy system support where the original part is no longer readily available or when design flexibility permits component selection from active product lines.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	800 V
Current - Average Rectified (Io)	5 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	75 ns
Current - Reverse Leakage @ Vr	10 µA @ 800 V
Package / Case	DO-214AB, SMC
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the US5K-TP are categorized based on strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 800 V minimum
Current - Average Rectified (Io): 5 A minimum
Package / Case: DO-214AB, SMC (Surface Mount)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

Operating Temperature - Junction: -55°C minimum to 150°C maximum
Reverse Recovery Time (trr): ≤ 500 ns (Fast Recovery classification)
Current - Reverse Leakage @ Vr: ≤ 25 µA @ 800 V

Parts meeting all primary criteria are classified as direct substitutes. Parts meeting primary criteria with variations in secondary parameters are classified as parametric equivalents. The MURS480ET3G operates at reduced current (4 A vs. 5 A) and is therefore suitable only where circuit design permits lower current ratings. The S5K-M3/57T and HS5K V7G meet all primary and secondary criteria and are suitable for direct replacement.

Parameter Comparison

Parameter	US5K-TP (Main)	MURS480ET3G	S5K-M3/57T	HS5K V7G
Manufacturer	Micro Commercial Co	onsemi	Vishay General Semiconductor - Diodes Division	Taiwan Semiconductor Corporation
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	5 A	4 A	5 A	5 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 5 A	1.85 V @ 4 A	1.15 V @ 5 A	1.7 V @ 5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	75 ns	100 ns	2.5 µs	75 ns
Current - Reverse Leakage @ Vr	10 µA @ 800 V	25 µA @ 800 V	10 µA @ 600 V	10 µA @ 800 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 175°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Not For New Designs	Active	Active	Discontinued at DiGi Electronics
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

S5K-M3/57T (Vishay General Semiconductor - Diodes Division)

The S5K-M3/57T is the preferred substitute for the US5K-TP. This part maintains identical voltage and current ratings (800 V, 5 A), operates within the same temperature range (-55°C ~ 150°C), and is packaged in the same DO-214AB SMC format. The part is currently Active in product status, ensuring long-term availability. ROHS3 compliance and MSL 1 rating match the original specification. The primary distinction is the recovery time classification: S5K-M3/57T operates as a Standard Recovery diode (2.5 µs) compared to the Fast Recovery specification (75 ns) of the US5K-TP. This difference is significant only in applications where switching frequency or transient response characteristics are critical design parameters.

HS5K V7G (Taiwan Semiconductor Corporation)

The HS5K V7G provides parametric equivalence to the US5K-TP with identical electrical characteristics: 800 V reverse voltage, 5 A current rating, 1.7 V forward voltage drop, 75 ns recovery time, and 10 µA reverse leakage. Operating temperature range, package format, and compliance certifications are identical. However, this part is listed as Discontinued at DiGi Electronics, limiting its suitability for new procurement. It remains available for legacy system support where existing inventory exists.

MURS480ET3G (onsemi)

The MURS480ET3G is suitable only where circuit design permits operation at reduced current capacity. This part is rated for 4 A average rectified current versus the 5 A specification of the US5K-TP. All other electrical parameters align: 800 V reverse voltage, Fast Recovery classification (100 ns recovery time), and identical package format. The part is currently Active in product status. Forward voltage drop is slightly elevated at 1.85 V @ 4 A. This substitute is appropriate for applications with current headroom or where the 4 A rating meets circuit requirements.

Frequently Asked Questions (FAQ)

Q: Can the MURS480ET3G directly replace the US5K-TP in all applications?

A: The MURS480ET3G is suitable only where the circuit design permits operation at 4 A average rectified current. The US5K-TP is rated for 5 A. If the application requires the full 5 A capacity, the MURS480ET3G is not a direct replacement. Verify circuit current requirements before substitution.

Q: What is the primary difference between the S5K-M3/57T and the US5K-TP?

A: Both parts share identical voltage (800 V), current (5 A), package (DO-214AB SMC), and temperature ratings. The key difference is recovery time classification: S5K-M3/57T is Standard Recovery (2.5 µs) while US5K-TP is Fast Recovery (75 ns). In low-frequency rectification applications, this difference is negligible. In high-frequency switching circuits, the slower recovery time of the S5K-M3/57T may introduce additional switching losses.

Q: Why is the HS5K V7G listed as a substitute if it is discontinued?

A: The HS5K V7G is included because it provides complete parametric equivalence to the US5K-TP and may be available through existing inventory channels or secondary distributors. It is suitable for legacy system maintenance and repair where the original part is unavailable but equivalent stock exists.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts listed are packaged in DO-214AB SMC format and are Surface Mount components. The MURS480ET3G is supplied in Cut Tape (CT) & Digi-Reel® packaging, while S5K-M3/57T is supplied in Tape & Reel (TR) format. Both formats are compatible with standard surface mount assembly processes. Verify packaging compatibility with your procurement and assembly workflow.

Q: Do all substitute parts meet the same compliance requirements as the US5K-TP?

A: Yes. All substitute parts listed are ROHS3 Compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original US5K-TP specification. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Q: Which substitute part should be selected for new circuit designs?

A: The S5K-M3/57T is recommended for new designs requiring 800 V, 5 A rectification in SMC package format. This part is currently Active in product status, ensuring long-term availability and supply chain stability. The MURS480ET3G is an alternative for designs where 4 A current capacity is acceptable and where onsemi component qualification is preferred.

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