FR1J Equivalent & Substitute Parts

Part Overview

The FR1J is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 600 V DC reverse voltage and 1 A average rectified current in a Surface Mount SMB (DO-214AA) package. This diode is classified as a fast recovery device with a reverse recovery time of 250 ns, suitable for applications requiring rapid switching characteristics. The part is currently Active in product status with 12,200 pieces in stock inventory.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support applications where alternative manufacturers or performance characteristics are acceptable within specified electrical and mechanical parameters.

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 @ 1 A	V
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-50 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the FR1J are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent: Parts that match the FR1J across all critical electrical specifications including reverse voltage rating (600 V), average rectified current (1 A), forward voltage drop (1.3 V @ 1 A), and fast recovery characteristics (trr ≤ 250 ns). These parts are pin-compatible and functionally interchangeable in the same circuit topology.

Similar Substitute: Parts that share the same package format (DO-214AA, SMB) and reverse voltage rating (600 V) but differ in average rectified current capacity or recovery speed characteristics. These substitutes are suitable for applications where higher current capacity or different switching speed requirements are acceptable, provided the circuit design accommodates the parameter differences.

Substitution eligibility is determined by:

Identical or higher DC reverse voltage rating (Vr)
Equal or higher average rectified current rating (Io)
Compatible package and mounting type (DO-214AA, SMB, Surface Mount)
Compliance with RoHS3 and applicable regulatory standards

Parameter Comparison

Parameter	FR1J (Main)	CMR2-06 TR13 PBFREE	S3JBHR5G	FR1J_R1_00001
Manufacturer	SMC Diode Solutions	Central Semiconductor Corp	Taiwan Semiconductor Corporation	Panjit International Inc.
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	1 A	2 A	3 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.1 V @ 2 A	1.15 V @ 3 A	1.3 V @ 1 A
Reverse Recovery Time (trr)	250 ns	2.5 µs	1.5 µs	250 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V	5 µA @ 600 V	10 µA @ 600 V	1 µA @ 600 V
Capacitance @ Vr, F	10 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	40 pF @ 4V, 1MHz	12 pF @ 4V, 1MHz
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-50 to 150 °C	-65 to 150 °C	-55 to 150 °C	-50 to 150 °C
Product Status	Active	Active	Discontinued at DiGi Electronics	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	12,200 Pcs	8,265 Pcs	4,076 Pcs	1,884 Pcs

Engineering Selection Recommendations

FR1J_R1_00001 (Panjit International Inc.) is the primary parametric equivalent for the FR1J. This part maintains identical electrical specifications including 600 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage drop at 1 A, and 250 ns reverse recovery time. The FR1J_R1_00001 is Active in product status, ROHS3 compliant, and REACH unaffected. This part is suitable for direct substitution in applications requiring fast recovery diode characteristics.

CMR2-06 TR13 PBFREE (Central Semiconductor Corp) is a similar substitute with higher current capacity (2 A) and identical reverse voltage rating (600 V). This part operates with standard recovery characteristics (trr = 2.5 µs) rather than fast recovery. The CMR2-06 TR13 PBFREE is Active in product status and ROHS3 compliant. This substitute is applicable in circuits where the 1 A current requirement can be satisfied by a 2 A rated device and where standard recovery speed is acceptable.

S3JBHR5G (Taiwan Semiconductor Corporation) is a similar substitute with the highest current capacity (3 A) among the listed alternatives. This part is rated for 600 V reverse voltage with standard recovery characteristics (trr = 1.5 µs). The S3JBHR5G is discontinued at DiGi Electronics and carries higher reverse leakage current (10 µA @ 600 V) compared to the FR1J. This part is suitable only for applications where higher current capacity is required and product discontinuation status is acceptable.

All substitute parts share the DO-214AA (SMB) package format and Surface Mount mounting type, ensuring mechanical compatibility with FR1J PCB layouts. All parts are ROHS3 compliant and operate within the -50 to 150 °C junction temperature range or extended ranges.

Frequently Asked Questions (FAQ)

Q: Can the FR1J_R1_00001 be used as a direct replacement for the FR1J?

A: Yes. The FR1J_R1_00001 manufactured by Panjit International Inc. is a parametric equivalent with identical electrical specifications: 600 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage drop at 1 A, and 250 ns reverse recovery time. Both parts use the DO-214AA (SMB) package and are Surface Mount compatible. The FR1J_R1_00001 is Active in product status and ROHS3 compliant.

Q: What is the difference between the FR1J and CMR2-06 TR13 PBFREE?

A: The primary differences are current rating and recovery speed. The CMR2-06 TR13 PBFREE is rated for 2 A average rectified current compared to the FR1J's 1 A rating. The CMR2-06 TR13 PBFREE operates with standard recovery characteristics (trr = 2.5 µs) versus the FR1J's fast recovery (trr = 250 ns). Both parts share the same 600 V reverse voltage rating and DO-214AA package. The CMR2-06 TR13 PBFREE is suitable for applications where higher current capacity is required and standard recovery speed is acceptable.

Q: Is the S3JBHR5G suitable for replacing the FR1J?

A: The S3JBHR5G can be used as a substitute only if the application circuit design accommodates higher current capacity (3 A) and standard recovery speed (trr = 1.5 µs). The S3JBHR5G is discontinued at DiGi Electronics, which may impact long-term availability. The part carries higher reverse leakage current (10 µA @ 600 V) compared to the FR1J (5 µA @ 600 V). Both parts share the 600 V reverse voltage rating and DO-214AA package format.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The FR1J, CMR2-06 TR13 PBFREE, S3JBHR5G, and FR1J_R1_00001 are all ROHS3 compliant. All parts are suitable for applications requiring RoHS3 compliance.

Q: What is the package compatibility between the FR1J and substitute parts?

A: All listed parts use the DO-214AA (SMB) package format with Surface Mount mounting type. This ensures mechanical and footprint compatibility on PCBs designed for the FR1J. No layout modifications are required when substituting between these parts.

Q: Which substitute part has the lowest reverse leakage current?

A: The FR1J_R1_00001 has the lowest reverse leakage current at 1 µA @ 600 V, compared to the FR1J at 5 µA @ 600 V and the S3JBHR5G at 10 µA @ 600 V. The CMR2-06 TR13 PBFREE matches the FR1J at 5 µA @ 600 V.

Q: Can I use a higher-rated current diode in place of the FR1J?

A: Yes, provided the circuit design accommodates the substitute part's electrical characteristics. The CMR2-06 TR13 PBFREE (2 A) and S3JBHR5G (3 A) can be used in applications where the FR1J's 1 A rating is sufficient, as higher-rated devices operate within lower stress conditions. However, differences in recovery speed and reverse leakage current must be evaluated for the specific application.

Q: What is the operating temperature range for the FR1J and its substitutes?

A: The FR1J and FR1J_R1_00001 operate from -50 to 150 °C junction temperature. The CMR2-06 TR13 PBFREE extends to -65 °C minimum, and the S3JBHR5G operates from -55 to 150 °C. All parts support the standard -50 to 150 °C range.

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