FR1J-TP Equivalent & Substitute Parts

Part Overview

The FR1J-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 1 A average rectified current in a DO-214AA (SMB) surface mount package. This part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design and procurement requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer compatible functionality within defined parameter tolerances for the DO-214AA package category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-50 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the FR1J-TP is determined by the following critical parameters: voltage rating (600 V DC reverse), current capacity (1 A or higher), package type (DO-214AA SMB or compatible surface mount), and recovery characteristics (fast or standard recovery). Parts are grouped into three categories:

Direct Equivalent (Same Manufacturer, Different Packaging): FR1J-LTP maintains identical electrical specifications with active product status and tape & reel packaging.

Similar Current-Rated Substitutes (Higher Current Capacity): S2J-M3/5BT (1.5 A) and S3JBHR5G (3 A) provide higher current ratings within the same 600 V voltage class and DO-214AA package, suitable for applications requiring additional current margin.

Parametric Equivalents (Same Base Specifications, Different Package): FR1J (Diotec, DO-214AC/SMA package) and FR1J_R1_00001 (Panjit, DO-214AA/SMB package) deliver identical electrical performance with alternative surface mount packages.

Higher Current Density Substitute (Enhanced Performance): STTH3L06UFY (STMicroelectronics, 3 A, SMBflat package) offers faster recovery time (70 ns) and automotive qualification (AEC-Q101) with extended temperature range (-40 to 175°C).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	Speed	trr	Package	Status
FR1J-TP	Micro Commercial Co	600 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	250 ns	DO-214AA (SMB)	Obsolete
FR1J-LTP	Micro Commercial Co	600 V	1 A	Not specified	Fast Recovery ≤ 500ns	250 ns	DO-214AA (SMB)	Active
S2J-M3/5BT	Vishay General Semiconductor	600 V	1.5 A	1.15 V @ 1.5 A	Standard Recovery >500ns	2 µs	DO-214AA (SMB)	Active
S3JBHR5G	Taiwan Semiconductor Corporation	600 V	3 A	1.15 V @ 3 A	Standard Recovery >500ns	1.5 µs	DO-214AA (SMB)	Discontinued at DiGi Electronics
STTH3L06UFY	STMicroelectronics	600 V	3 A	1.4 V @ 3 A	Fast Recovery ≤ 500ns	70 ns	DO-221AA (SMBflat)	Active
FR1J	Diotec Semiconductor	600 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	250 ns	DO-214AC (SMA)	Active
FR1J_R1_00001	Panjit International Inc.	600 V	1 A	1.3 V @ 1 A	Fast Recovery ≤ 500ns	250 ns	DO-214AA (SMB)	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications and Package): FR1J-LTP is the primary direct equivalent, manufactured by Micro Commercial Co with active product status. This part maintains all electrical parameters of the FR1J-TP while offering improved availability through tape & reel packaging. FR1J_R1_00001 (Panjit International Inc.) provides an alternative direct replacement with identical DO-214AA package and electrical specifications, with active status and higher inventory availability.

For Pin-Compatible Substitution (Same Package, Identical Electrical Performance): FR1J (Diotec Semiconductor) delivers parametric equivalence with identical voltage, current, and recovery specifications. The DO-214AC (SMA) package is mechanically compatible with DO-214AA footprints in most PCB layouts, though design verification is required for specific board geometries.

For Higher Current Margin Applications: S2J-M3/5BT (Vishay) and S3JBHR5G (Taiwan Semiconductor Corporation) provide 1.5 A and 3 A ratings respectively within the same 600 V class and DO-214AA package. These parts accommodate applications requiring additional current capacity while maintaining package compatibility. Note that S3JBHR5G is discontinued at DiGi Electronics; S2J-M3/5BT is the recommended higher-current alternative with active status.

For Enhanced Performance and Automotive Applications: STTH3L06UFY (STMicroelectronics) offers superior fast recovery characteristics (70 ns versus 250 ns), 3 A current rating, and AEC-Q101 automotive qualification. The SMBflat package (DO-221AA) requires PCB layout verification for compatibility with standard DO-214AA footprints. Extended operating temperature range (-40 to 175°C) supports demanding thermal environments.

Compliance Considerations: All recommended parts maintain ROHS3 compliance and REACH unaffected status, consistent with the FR1J-TP. Moisture sensitivity level (MSL 1, Unlimited) is uniform across all substitutes, eliminating moisture-related handling constraints.

Frequently Asked Questions (FAQ)

Q: Can FR1J-LTP be used as a direct replacement for FR1J-TP? A: Yes. FR1J-LTP is manufactured by the same supplier (Micro Commercial Co) and maintains identical electrical specifications: 600 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage at 1 A, and 250 ns reverse recovery time. The primary difference is packaging format (tape & reel versus bulk), with FR1J-LTP holding active product status.

Q: What is the difference between fast recovery and standard recovery diodes in this application? A: Fast recovery diodes (FR1J-TP, FR1J-LTP, STTH3L06UFY) exhibit reverse recovery times ≤ 500 ns, suitable for high-frequency switching applications. Standard recovery diodes (S2J-M3/5BT, S3JBHR5G) have recovery times > 500 ns, appropriate for lower-frequency rectification. Selection depends on circuit switching frequency requirements.

Q: Are S2J-M3/5BT and S3JBHR5G suitable substitutes if my circuit only requires 1 A? A: Yes. Both parts are rated for higher current (1.5 A and 3 A respectively) and maintain the same 600 V voltage rating and DO-214AA package. Higher current ratings provide design margin without affecting circuit operation at lower current levels. However, verify that forward voltage characteristics (1.15 V at rated current) are acceptable for your application.

Q: Can STTH3L06UFY replace FR1J-TP in existing PCB designs? A: STTH3L06UFY uses the SMBflat package (DO-221AA) with flat leads, differing from the standard DO-214AA package. Physical footprint compatibility must be verified with your PCB layout. The part offers superior performance (70 ns recovery time, 3 A rating, automotive qualification) but requires mechanical validation before board-level substitution.

Q: What is the significance of the FR1J base part number across different manufacturers? A: FR1J is a parametric equivalent designation indicating identical electrical specifications (600 V, 1 A, fast recovery, 250 ns trr) across multiple manufacturers including Diotec Semiconductor and Panjit International Inc. These parts are functionally interchangeable despite different package options (DO-214AC/SMA versus DO-214AA/SMB).

Q: Why is S3JBHR5G listed as discontinued at DiGi Electronics? A: S3JBHR5G (Taiwan Semiconductor Corporation) is marked as discontinued at DiGi Electronics, indicating limited future availability through this distribution channel. For 3 A applications, STTH3L06UFY (STMicroelectronics) is the recommended active alternative with superior recovery characteristics and automotive qualification.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with FR1J-TP environmental and regulatory requirements.

Q: What is the operating temperature range difference between FR1J-TP and STTH3L06UFY? A: FR1J-TP operates from -50°C to 150°C junction temperature. STTH3L06UFY extends this range to -40°C to 175°C, providing 25°C additional high-temperature margin. This extended range supports applications in elevated thermal environments and is supported by AEC-Q101 automotive qualification.

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