UFS520J/TR13 Equivalent & Substitute Parts

Part Overview

The UFS520J/TR13 is a general-purpose rectifier diode manufactured by Microchip Technology, rated for 200 V DC reverse voltage and 5 A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as Active and is RoHS non-compliant. Substitute parts are necessary when the primary part is unavailable, when design requirements demand RoHS compliance, or when alternative packaging formats are required for manufacturing processes.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 5 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	30	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Package / Case	DO-214AB, SMC	-
Operating Temperature - Junction	-55 to 175	°C
Mounting Type	Surface Mount	-

Substitute Part Grouping Explanation

Substitution of the UFS520J/TR13 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 5 A
Package / Case: Must be DO-214AB or SMC compatible
Mounting Type: Must be Surface Mount

Secondary Considerations:

Speed classification (Fast Recovery vs. Standard Recovery)
Reverse Recovery Time (trr)
Forward Voltage (Vf) characteristics
Operating Temperature range
RoHS compliance status
Product Status (Active vs. Not For New Designs)

Parts are grouped into two categories:

Category A - Direct Equivalents (5A rated): Parts meeting the exact 5 A current specification with 200 V voltage rating and compatible packaging.

Category B - Functional Alternatives (3A to 6A rated): Parts with voltage and package compatibility but different current ratings, suitable for applications where the 5 A specification can be adjusted or where higher current capacity is beneficial.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [mV]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Temp Range [°C]	RoHS Status	Product Status
UFS520J/TR13	Microchip Technology	200	5	950 @ 5A	Fast Recovery ≤ 500ns	30	10 @ 200V	DO-214AB, SMC	-55 to 175	Non-compliant	Active
S5DC-13-F	Diodes Incorporated	200	5	1150 @ 5A	Standard Recovery >500ns	-	10 @ 200V	DO-214AB, SMC	-65 to 150	ROHS3 Compliant	Active
S5DL-TP	Micro Commercial Co	200	5	1200 @ 5A	Standard Recovery >500ns	-	10 @ 200V	DO-214AB, SMC	-55 to 150	ROHS3 Compliant	Not For New Designs
SMLJ60S2-TP	Micro Commercial Co	200	6	1000 @ 6A	Standard Recovery >500ns	-	5 @ 200V	DO-214AB, SMC	-55 to 150	ROHS3 Compliant	Not For New Designs
STTH302S	STMicroelectronics	200	3	950 @ 3A	Fast Recovery ≤ 500ns	35	3 @ 200V	DO-214AB, SMC	-55 to 175	ROHS3 Compliant	Active
STTH3R02S	STMicroelectronics	200	3	1000 @ 3A	Fast Recovery ≤ 500ns	30	3 @ 200V	DO-214AB, SMC	-55 to 175	ROHS3 Compliant	Active
STTH4R02S	STMicroelectronics	200	4	1050 @ 4A	Fast Recovery ≤ 500ns	30	3 @ 200V	DO-214AB, SMC	-55 to 175	ROHS3 Compliant	Active
STTH4R02SY	STMicroelectronics	200	4	1050 @ 4A	Fast Recovery ≤ 500ns	30	3 @ 200V	DO-214AB, SMC	-40 to 175	ROHS3 Compliant	Active

Engineering Selection Recommendations

For RoHS Compliance Requirements: Select S5DC-13-F (Diodes Incorporated) as the primary substitute. This part maintains the 200 V / 5 A specification, is ROHS3 compliant, and carries Active product status. The forward voltage is elevated at 1150 mV compared to the original 950 mV, which must be evaluated for thermal and efficiency impacts in the target application.

For Fast Recovery Performance with Active Status: STTH4R02S (STMicroelectronics) provides Fast Recovery characteristics matching the original part's speed classification with 30 ns reverse recovery time. However, this part is rated at 4 A, requiring circuit verification that the reduced current rating is acceptable. STTH4R02SY offers identical electrical performance with automotive-grade qualification and extended temperature range (-40°C to 175°C).

For Direct 5 A Current Rating with Active Status: S5DC-13-F remains the only substitute maintaining both the 5 A current specification and Active product status with RoHS compliance. S5DL-TP provides equivalent current rating but carries Not For New Designs status, limiting its suitability for new product development.

For Higher Current Capacity: SMLJ60S2-TP (6 A rated) provides increased current margin with lower reverse leakage (5 µA vs. 10 µA). This part is suitable for applications requiring enhanced current headroom, though it carries Not For New Designs status.

For Reduced Reverse Leakage: STTH302S, STTH3R02S, and STTH4R02S all exhibit lower reverse leakage (3 µA) compared to the original 10 µA specification. These parts are beneficial in low-leakage applications but require current rating verification.

Frequently Asked Questions (FAQ)

Q: Can S5DC-13-F directly replace UFS520J/TR13 in all applications?

A: S5DC-13-F meets the voltage (200 V) and current (5 A) specifications and uses compatible DO-214AB/SMC packaging. However, the forward voltage is 200 mV higher (1150 mV vs. 950 mV at 5 A), which increases power dissipation. Thermal analysis of the target circuit is required to confirm compatibility.

Q: Why are STTH302S and STTH3R02S listed as substitutes if they are only rated for 3 A?

A: These parts are included because they meet the voltage specification (200 V) and package requirements (DO-214AB/SMC). They are functional alternatives for applications where the current requirement can be reduced or where multiple diodes can be paralleled. They are not direct replacements for 5 A applications.

Q: What is the difference between S5DL-TP and S5DC-13-F?

A: Both parts are 200 V / 5 A general-purpose rectifiers in DO-214AB/SMC packages. S5DC-13-F is Active status with ROHS3 compliance and lower forward voltage (1150 mV). S5DL-TP is Not For New Designs status with slightly higher forward voltage (1200 mV). S5DC-13-F is preferred for new designs.

Q: Is STTH4R02SY suitable for automotive applications?

A: STTH4R02SY carries automotive-grade qualification (Series Q) and is rated for -40°C to 175°C operating temperature. However, it is rated for 4 A, not 5 A. Automotive applications must verify that the reduced current rating meets circuit requirements.

Q: What is the impact of switching from Fast Recovery to Standard Recovery speed?

A: S5DC-13-F and S5DL-TP use Standard Recovery (>500ns) compared to the original Fast Recovery (≤500ns). Standard Recovery diodes exhibit slower reverse recovery, which may increase switching losses in high-frequency applications. Circuit performance must be validated for the target switching frequency.

Q: Can multiple lower-rated diodes be used in parallel to replace the 5 A UFS520J/TR13?

A: Parallel operation of diodes requires careful design to ensure current sharing. The provided substitute list includes parts rated at 3 A and 4 A that could theoretically be paralleled, but this approach introduces complexity and is not recommended without detailed thermal and electrical analysis.

Q: What packaging formats are available for these substitutes?

A: All listed substitutes use DO-214AB/SMC surface mount packages compatible with the original part. Packaging formats vary between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR). Verify packaging compatibility with your procurement and assembly processes.

Q: Are there temperature range limitations when substituting parts?

A: The original UFS520J/TR13 operates from -55°C to 175°C. S5DC-13-F operates from -65°C to 150°C (lower maximum). S5DL-TP operates from -55°C to 150°C. Verify that the substitute's temperature range meets application requirements, particularly the maximum junction temperature.

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