UFS540JE3/TR13 Equivalent & Substitute Parts

Part Overview

The UFS540JE3/TR13 is a general-purpose rectifier diode manufactured by Microchip Technology, rated for 400 V DC reverse voltage and 5 A average rectified current in a surface-mount DO-214AB package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified based on matching or exceeding the electrical specifications of the main part while maintaining compatibility with the DO-214AB surface-mount package form factor. Alternatives are necessary when the primary part reaches end-of-life status, inventory constraints occur, or design flexibility is required across multiple qualified suppliers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 5 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	10	µA @ 400 V
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55°C ~ 175°C	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution logic for the UFS540JE3/TR13 is based on the following criteria:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V minimum
Package / Case: DO-214AB or equivalent SMC surface-mount package
Mounting Type: Surface Mount
RoHS3 Compliance and MSL 1 rating

Secondary Compatibility Factors:

Current - Average Rectified (Io): Equal to or greater than 5 A (full compatibility) or 3 A (reduced current capacity with design review)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) preferred; Standard Recovery acceptable with application verification
Operating Temperature Range: Minimum -55°C to 175°C junction temperature

Substitute parts are grouped into two categories:

Category A - Full Electrical Equivalents (5 A Rating): Parts matching the 5 A current specification with 400 V reverse voltage and fast recovery characteristics.

Category B - Reduced Current Equivalents (3 A Rating): Parts with 400 V reverse voltage and 3 A current rating. These parts require design review to confirm application current demands do not exceed 3 A continuous operation.

Parameter Comparison

Parameter	UFS540JE3/TR13 (Main)	MURS340T3G	ACGRCT302-HF	S5GL-TP	STTH3R04S
Manufacturer	Microchip Technology	onsemi	Comchip Technology	Micro Commercial Co	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	5 A	3 A	3 A	5 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 5 A	1.25 V @ 3 A	1 V @ 3 A	1.2 V @ 5 A	1.5 V @ 3 A
Speed Classification	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Fast Recovery ≤ 500ns	Standard Recovery >500ns	Fast Recovery ≤ 500ns
Reverse Recovery Time (trr)	50 ns	75 ns	—	—	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 400 V	10 µA @ 400 V	5 µA @ 400 V	10 µA @ 400 V	5 µA @ 400 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC	2-SMD, No Lead (3220/DO-214AB)	DO-214AB, SMC	DO-214AB, SMC
Operating Temperature - Junction	-55°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-55°C ~ 150°C	Max 175°C
Product Status	Active	Active	Last Time Buy	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute - Full Current Equivalence:

S5GL-TP (Micro Commercial Co) provides electrical equivalence at 5 A current rating with matching 400 V reverse voltage and 1.2 V forward voltage specification. However, this part carries "Not For New Designs" product status, limiting its use to legacy system maintenance or existing inventory utilization only. The operating temperature range extends to 150°C maximum junction temperature, which is 25°C lower than the main part specification.

Recommended Active Substitutes - Reduced Current Capacity:

MURS340T3G (onsemi) is an Active product with 400 V reverse voltage and 3 A current rating. This part features fast recovery characteristics (≤ 500ns) with 75 ns reverse recovery time and is available in high inventory (47,800 pcs). Operating temperature range extends to -65°C, providing enhanced low-temperature performance. Selection requires confirmation that application current demands do not exceed 3 A continuous operation.

STTH3R04S (STMicroelectronics) is an Active product with 400 V reverse voltage and 3 A current rating. This part offers the fastest reverse recovery time (35 ns) among all substitutes and features fast recovery characteristics. Operating temperature maximum is 175°C, matching the main part specification. Selection requires confirmation that application current demands do not exceed 3 A continuous operation.

Alternative with Automotive Qualification:

ACGRCT302-HF (Comchip Technology) carries AEC-Q101 automotive qualification and is rated for 400 V reverse voltage at 3 A current. This part features the lowest forward voltage (1 V @ 3 A) and lowest reverse leakage current (5 µA @ 400 V) among all substitutes. Product status is "Last Time Buy," restricting use to legacy applications. Operating temperature range extends to -65°C. Selection requires confirmation that application current demands do not exceed 3 A continuous operation.

Compliance Summary:

All substitute parts maintain RoHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and REACH Unaffected status, matching the main part's regulatory profile. All parts are packaged in DO-214AB or equivalent SMC surface-mount configurations suitable for direct PCB substitution.

Frequently Asked Questions (FAQ)

Q: Can MURS340T3G or STTH3R04S be used as direct replacements for UFS540JE3/TR13?

A: These parts are electrically compatible at 400 V reverse voltage and feature fast recovery characteristics matching the main part specification. However, both are rated for 3 A average rectified current versus the main part's 5 A rating. Direct substitution is valid only when application circuit current demands do not exceed 3 A continuous operation. Circuit analysis must confirm this condition before implementation.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have reverse recovery time ≤ 500 ns and are suitable for high-frequency switching applications. Standard recovery diodes exceed 500 ns reverse recovery time and are appropriate for lower-frequency rectification. The main part UFS540JE3/TR13 specifies fast recovery with 50 ns reverse recovery time. Substitute S5GL-TP uses standard recovery (>500ns) and requires application verification to confirm compatibility with circuit switching frequencies.

Q: Why is S5GL-TP marked "Not For New Designs"?

A: This product status indicates the part is in end-of-life phase and is available only from existing inventory. While electrically equivalent at 5 A current rating, this part should not be selected for new circuit designs. Use S5GL-TP only for legacy system maintenance or repair of existing equipment already using this component.

Q: What does "Last Time Buy" status mean for ACGRCT302-HF?

A: "Last Time Buy" indicates the manufacturer has announced end-of-production and will accept orders only until a specified cutoff date. After this date, the part becomes unavailable. ACGRCT302-HF should not be selected for new designs requiring long-term production support. This part is suitable for legacy applications or short-term production runs only.

Q: Are all substitute parts available in the same package as the main part?

A: All substitute parts use DO-214AB or equivalent SMC surface-mount packages, ensuring physical compatibility with existing PCB layouts. ACGRCT302-HF is specified as 3220/DO-214AB, which is the equivalent package designation. No PCB redesign is required for package accommodation.

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

A: Reverse recovery time affects switching speed and electromagnetic interference (EMI) characteristics. The main part specifies 50 ns trr. STTH3R04S offers 35 ns (faster), while MURS340T3G specifies 75 ns (slower). Faster recovery times reduce switching losses and EMI but may increase cost. Application circuit design determines whether trr differences are significant.

Q: Can I use ACGRCT302-HF in automotive applications?

A: ACGRCT302-HF carries AEC-Q101 automotive qualification, making it suitable for automotive circuit applications. The main part UFS540JE3/TR13 does not specify automotive qualification. If automotive qualification is required, ACGRCT302-HF is the only substitute meeting this criterion, subject to the 3 A current limitation.

Q: What is the impact of forward voltage (Vf) differences on circuit performance?

A: Forward voltage differences affect power dissipation and voltage drop across the diode during conduction. The main part specifies 1.2 V @ 5 A. ACGRCT302-HF offers lower Vf (1 V @ 3 A), reducing power loss. STTH3R04S specifies higher Vf (1.5 V @ 3 A), increasing power dissipation. Circuit thermal analysis determines whether these differences are acceptable.

Q: Are there temperature range limitations with any substitute parts?

A: S5GL-TP specifies maximum junction temperature of 150°C, which is 25°C lower than the main part's 175°C maximum. If the application requires operation at junction temperatures between 150°C and 175°C, S5GL-TP is not suitable. All other substitutes support the full -55°C to 175°C range or extended low-temperature performance (-65°C minimum).

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