FR3J-TP Equivalent & Substitute Parts

Part Overview

The FR3J-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or supply chain optimization.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 3 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	10 @ 600 V	µA
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the FR3J-TP are classified into two categories based on substitution criteria:

Direct Substitutes (Electrical & Mechanical Equivalence)

Direct substitutes maintain the following critical parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 3 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): ≤ 250 ns
RoHS3 Compliance

Parts meeting these criteria: ES3J, MURS360T3G, RS3J-13-F, STTH3L06S, STTH3R06S, RS3J V7G, RS3J-E3/57T

Parametric Equivalents (Functional Compatibility with Minor Variations)

Parametric equivalents satisfy core electrical ratings (600 V, 3 A, DO-214AB package) but may exhibit variations in forward voltage, reverse recovery time, or temperature range within acceptable engineering tolerances.

Parts in this category: S3J, S3J-13-F

Non-Equivalent Parts (Current Rating Mismatch)

STTH2R06S is rated for 2 A average rectified current and does not meet the 3 A requirement of the FR3J-TP. This part is excluded from direct substitution.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Package	Tj (Max) [°C]	RoHS3
FR3J-TP	Micro Commercial Co	600	3	1.3 @ 3 A	250	10 @ 600 V	DO-214AB, SMC	150	Yes
ES3J	Good-Ark Semiconductor	600	3	1.7 @ 3 A	35	10 @ 600 V	DO-214AB, SMC	150	Yes
MURS360T3G	onsemi	600	3	1.25 @ 3 A	75	10 @ 600 V	DO-214AB, SMC	175	Yes
RS3J-13-F	Diodes Incorporated	600	3	1.3 @ 3 A	250	5 @ 600 V	DO-214AB, SMC	150	Yes
S3J	Diotec Semiconductor	600	3	1.15 @ 3 A	1500	5 @ 600 V	DO-214AB, SMC	150	Yes
S3J-13-F	Diodes Incorporated	600	3	1.15 @ 3 A	—	10 @ 600 V	DO-214AB, SMC	150	Yes
STTH2R06S	STMicroelectronics	600	2	1.7 @ 2 A	50	2 @ 600 V	DO-214AB, SMC	175	Yes
STTH3L06S	STMicroelectronics	600	3	1.3 @ 3 A	85	3 @ 600 V	DO-214AB, SMC	175	Yes
STTH3R06S	STMicroelectronics	600	3	1.7 @ 3 A	35	3 @ 600 V	DO-214AB, SMC	175	Yes
RS3J V7G	Taiwan Semiconductor Corporation	600	3	1.3 @ 3 A	250	10 @ 600 V	DO-214AB, SMC	150	Yes
RS3J-E3/57T	Vishay General Semiconductor - Diodes Division	600	3	1.3 @ 2.5 A	250	10 @ 600 V	DO-214AB, SMC	150	Yes

Engineering Selection Recommendations

Primary Direct Substitutes

RS3J-13-F (Diodes Incorporated) and STTH3L06S (STMicroelectronics) are the preferred direct substitutes. Both maintain 600 V reverse voltage, 3 A current rating, DO-214AB package, and fast recovery characteristics. RS3J-13-F matches the FR3J-TP forward voltage specification (1.3 V @ 3 A) and reverse recovery time (250 ns). STTH3L06S offers improved reverse recovery time (85 ns) and lower reverse leakage current (3 µA), with extended maximum junction temperature (175°C). Both are RoHS3 compliant and Active product status.

Secondary Direct Substitutes

MURS360T3G (onsemi) provides superior forward voltage performance (1.25 V @ 3 A) and extended temperature range (-65°C to 175°C). STTH3R06S (STMicroelectronics) delivers the fastest reverse recovery time (35 ns) among all candidates, suitable for high-frequency switching applications.

Parametric Equivalents

S3J-13-F (Diodes Incorporated) and S3J (Diotec Semiconductor) satisfy the 600 V, 3 A, DO-214AB requirements but employ standard recovery characteristics (>500 ns) rather than fast recovery. These parts are suitable for applications where switching speed is not critical. S3J-13-F is Active product status with 101,011 units in stock. S3J is Active with limited inventory (851 units).

Discontinued Parts

RS3J V7G (Taiwan Semiconductor Corporation) is discontinued at DiGi Electronics and should not be selected for new designs despite parametric equivalence.

Non-Equivalent Parts

STTH2R06S (STMicroelectronics) is rated for 2 A average rectified current and is not suitable for applications requiring 3 A capacity.

Frequently Asked Questions (FAQ)

Q: Can ES3J replace FR3J-TP in all applications?

A: ES3J maintains the 600 V, 3 A, DO-214AB specifications and fast recovery classification. However, forward voltage is higher (1.7 V @ 3 A versus 1.3 V @ 3 A), and reverse recovery time is significantly faster (35 ns versus 250 ns). These differences are acceptable in most general-purpose rectification circuits but may affect power dissipation and switching performance in specific designs.

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

A: Fast recovery diodes (≤500 ns reverse recovery time) are designed for high-frequency switching applications and exhibit lower switching losses. Standard recovery diodes (>500 ns) are suitable for lower-frequency rectification. The FR3J-TP is classified as fast recovery. S3J and S3J-13-F are standard recovery alternatives.

Q: Is STTH2R06S a valid substitute?

A: No. STTH2R06S is rated for 2 A average rectified current, while FR3J-TP is rated for 3 A. Using a 2 A diode in a 3 A application exceeds the component's current capacity and creates reliability risk.

Q: Can I use a substitute with a higher maximum junction temperature?

A: Yes. Parts with higher maximum junction temperature ratings (such as MURS360T3G and STTH3L06S at 175°C versus FR3J-TP at 150°C) provide additional thermal margin and are directly compatible. This represents an improvement in thermal performance.

Q: What packaging options are available for substitutes?

A: All direct substitutes use the DO-214AB (SMC) surface mount package, identical to FR3J-TP. Packaging variations exist only in supplier delivery format: Tape & Reel (TR), Cut Tape (CT), or Digi-Reel®. These are logistics considerations and do not affect component functionality.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant, matching the FR3J-TP compliance status.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current (Ir) ranges from 2 µA to 10 µA across the substitute list. Lower leakage current (STTH3L06S and STTH3R06S at 3 µA, STTH2R06S at 2 µA) reduces standby power consumption and improves circuit efficiency. This difference is negligible in most applications but becomes significant in precision analog circuits or low-power designs.

Q: Can I substitute based on forward voltage alone?

A: No. Forward voltage is one parameter among several. Reverse voltage, current rating, package, and recovery characteristics must all match or exceed application requirements. Substitution decisions must account for all electrical and mechanical parameters.

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