FR1G-TP Equivalent & Substitute Parts

Part Overview

The FR1G-TP is a general-purpose fast recovery rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Operating Temperature - Junction	-50 to 150	°C
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the FR1G-TP is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Reverse Recovery Time (trr): 150 ns
Operating Temperature - Junction: -50°C to 150°C
RoHS3 Compliance

Package Compatibility Considerations:

Primary substitute maintains DO-214AA (SMB) package for direct board-level replacement
Secondary substitute utilizes DO-214AC (SMA) package, requiring PCB layout evaluation

Two parametric equivalents are identified. The FR1G from Diotec Semiconductor matches all electrical specifications but uses a DO-214AC (SMA) package variant. The FR1G_R1_00001 from Panjit International Inc. provides identical electrical performance and maintains the original DO-214AA (SMB) package footprint.

Parameter Comparison

Parameter	FR1G-TP (Micro Commercial Co)	FR1G (Diotec Semiconductor)	FR1G_R1_00001 (Panjit International Inc.)
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	1 µA @ 400 V
Operating Temperature - Junction	-50°C to 150°C	-50°C to 150°C	-50°C to 150°C
Package / Case	DO-214AA, SMB	DO-214AC, SMA	DO-214AA, SMB
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

FR1G_R1_00001 (Panjit International Inc.) is the primary substitute for direct replacement applications. This part maintains identical package geometry (DO-214AA, SMB), ensuring compatibility with existing PCB layouts without modification. The component is active in production, carries ROHS3 and REACH compliance certifications matching the original FR1G-TP, and demonstrates superior reverse leakage characteristics (1 µA versus 5 µA at 400 V).

FR1G (Diotec Semiconductor) serves as an electrical equivalent for applications where package footprint flexibility exists. This part matches all critical electrical parameters and maintains active production status with full compliance certifications. The DO-214AC (SMA) package requires PCB layout evaluation and potential redesign of the component mounting area.

Both substitutes are suitable for new designs and production continuity where the FR1G-TP is no longer available.

Frequently Asked Questions (FAQ)

Q: Can FR1G_R1_00001 replace FR1G-TP without PCB modification?

A: Yes. The FR1G_R1_00001 maintains the DO-214AA (SMB) package footprint identical to the original FR1G-TP, enabling direct board-level substitution without layout changes.

Q: What is the difference between the DO-214AA (SMB) and DO-214AC (SMA) packages?

A: DO-214AA (SMB) and DO-214AC (SMA) are distinct surface mount package outlines with different physical dimensions and PCB pad configurations. Direct substitution between these packages requires PCB redesign. The FR1G from Diotec uses DO-214AC (SMA), while FR1G_R1_00001 uses DO-214AA (SMB).

Q: Are all substitutes RoHS3 compliant?

A: Yes. Both FR1G and FR1G_R1_00001 carry ROHS3 Compliant certification, matching the compliance status of the original FR1G-TP.

Q: How do reverse leakage specifications compare?

A: The FR1G-TP and FR1G specify 5 µA reverse leakage at 400 V. The FR1G_R1_00001 specifies 1 µA at 400 V, representing improved leakage performance while maintaining all other electrical equivalence.

Q: Which substitute has better production availability?

A: The FR1G from Diotec Semiconductor reports 205,200 pieces in stock, providing the highest inventory availability. The FR1G_R1_00001 reports 889 pieces in stock. Both are active production components.

Q: Are the electrical characteristics identical across all three parts?

A: All three parts match on voltage rating (400 V), current rating (1 A), forward voltage (1.3 V @ 1 A), recovery time (150 ns), and operating temperature range (-50°C to 150°C). The FR1G_R1_00001 demonstrates lower reverse leakage (1 µA versus 5 µA).

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