FR1M-TP Equivalent & Substitute Parts

Part Overview

The FR1M-TP is a general-purpose rectifier diode rated for 1000 V DC reverse voltage and 1 A average rectified current in a DO-214AA (SMB) surface mount package. Manufactured by Micro Commercial Co, this component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	1000 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A
Reverse Recovery Time (trr)	500 ns
Current - Reverse Leakage @ Vr	5 µA @ 1000 V
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-50°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the FR1M-TP are classified into three categories based on electrical and mechanical compatibility:

Direct Manufacturer Equivalent (Packaging Variant): FR1M-LTP shares identical electrical specifications with the main part but differs in packaging format (Tape & Reel versus bulk). This part maintains the same base product number (FR1M) and all critical electrical parameters.

Parametric Equivalent (Same Electrical Class): FR1M_R1_00001 from Panjit International Inc. matches the electrical performance envelope of the FR1M-TP, including voltage rating, current rating, forward voltage, and recovery time. Package and mounting type are identical.

Similar Substitute (Higher Current Rating): CMR3U-10M TR13 PBFREE from Central Semiconductor Corp operates at the same 1000 V reverse voltage but with a higher 3 A current rating. This part uses a different package (DO-214AB, SMC) and exhibits different thermal characteristics.

Substitution eligibility is determined by:

Voltage - DC Reverse (Vr) (Max): 1000 V minimum
Current - Average Rectified (Io): 1 A minimum
Package / Case compatibility with PCB design
Operating temperature range requirements
RoHS and regulatory compliance status

Parameter Comparison

Parameter	FR1M-TP	FR1M-LTP	FR1M_R1_00001	CMR3U-10M TR13 PBFREE
Manufacturer	Micro Commercial Co	Micro Commercial Co	Panjit International Inc.	Central Semiconductor Corp
Product Status	Obsolete	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	1000 V	1000 V	1000 V	1000 V
Current - Average Rectified (Io)	1 A	1 A	1 A	3 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	2 V @ 3 A
Reverse Recovery Time (trr)	500 ns	500 ns	500 ns	100 ns
Current - Reverse Leakage @ Vr	5 µA @ 1000 V	5 µA @ 1000 V	1 µA @ 1000 V	5 µA @ 1000 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-50°C ~ 150°C	-50°C ~ 150°C	-50°C ~ 150°C	-65°C ~ 175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
Inventory Status	871 Pcs New Original In Stock	8176 Pcs New Original In Stock	20300 Pcs New Original In Stock	17302 Pcs New Original In Stock

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

FR1M-LTP is the primary active equivalent. It maintains all electrical specifications of the FR1M-TP while offering superior inventory availability (8176 units). The only difference is packaging format (Tape & Reel). This part is suitable for designs requiring no PCB layout modifications and is recommended for high-volume production environments where tape-and-reel packaging is standard.

FR1M_R1_00001 from Panjit International Inc. provides an alternative direct replacement with identical electrical ratings and package dimensions. This part exhibits lower reverse leakage current (1 µA versus 5 µA), which may provide marginal performance benefits in low-leakage applications. Inventory availability is highest among active equivalents (20300 units).

For Applications Tolerating Higher Current Capacity:

CMR3U-10M TR13 PBFREE accommodates designs where current headroom is beneficial. The 3 A rating provides 300% margin over the 1 A requirement. However, this substitution requires PCB layout modification due to package change from DO-214AA (SMB) to DO-214AB (SMC). The faster recovery time (100 ns versus 500 ns) and extended temperature range (-65°C to 175°C) may provide operational advantages in demanding thermal environments. This part is suitable only when PCB redesign is acceptable.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity. Moisture sensitivity level remains at MSL 1 (Unlimited) across all options.

Frequently Asked Questions (FAQ)

Q: Can FR1M-LTP be used as a direct drop-in replacement for FR1M-TP?

A: Yes. FR1M-LTP is electrically and mechanically identical to FR1M-TP. The only difference is packaging format (Tape & Reel versus bulk). If your assembly process accommodates tape-and-reel packaging, no design changes are required.

Q: What is the difference between FR1M_R1_00001 and FR1M-LTP?

A: Both parts are direct electrical equivalents with identical voltage, current, and package specifications. FR1M_R1_00001 is manufactured by Panjit International Inc. and exhibits lower reverse leakage current (1 µA versus 5 µA). FR1M-LTP is manufactured by Micro Commercial Co. Selection between these parts depends on manufacturer preference and inventory availability.

Q: Can CMR3U-10M TR13 PBFREE replace FR1M-TP without PCB modification?

A: No. CMR3U-10M TR13 PBFREE uses package DO-214AB (SMC), which differs from the FR1M-TP package DO-214AA (SMB). PCB footprint modification is required. This substitution is appropriate only when design changes are acceptable and the higher 3 A current rating provides operational benefit.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The critical parameters are: Voltage - DC Reverse (Vr) (Max) of 1000 V minimum, Current - Average Rectified (Io) of 1 A minimum, Voltage - Forward (Vf) (Max) of 1.3 V @ 1 A, and Reverse Recovery Time (trr) of 500 ns. Parts meeting or exceeding these specifications within the same package class are considered compatible.

Q: Is the lower reverse leakage current of FR1M_R1_00001 significant?

A: FR1M_R1_00001 exhibits 1 µA reverse leakage at 1000 V compared to 5 µA for FR1M-TP. This difference is relevant only in applications where leakage current directly impacts circuit performance, such as high-impedance analog circuits or precision measurement systems. For standard rectification applications, this difference is negligible.

Q: What is the advantage of CMR3U-10M TR13 PBFREE's faster recovery time?

A: CMR3U-10M TR13 PBFREE has a reverse recovery time of 100 ns compared to 500 ns for FR1M-TP. Faster recovery reduces switching losses and electromagnetic interference in high-frequency switching applications. This advantage applies only to circuits operating at frequencies where recovery time becomes a limiting factor.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. FR1M-LTP, FR1M_R1_00001, and CMR3U-10M TR13 PBFREE are all ROHS3 compliant and REACH unaffected, maintaining regulatory compatibility with the original FR1M-TP.

Q: Which substitute part offers the best inventory availability?

A: FR1M_R1_00001 from Panjit International Inc. has the highest inventory level at 20300 units. FR1M-LTP from Micro Commercial Co. has 8176 units available. CMR3U-10M TR13 PBFREE has 17302 units. Inventory levels should be verified at time of procurement.

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