FR1A-TP Equivalent & Substitute Parts

Part Overview

The FR1A-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 50 V DC reverse voltage and 1 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with modified parameters that remain within acceptable application ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 50 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

Substitution of the FR1A-TP is determined by the following critical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) rating must equal or exceed 50 V
Current - Average Rectified (Io) rating must equal or exceed 1 A
Voltage - Forward (Vf) characteristics must be compatible with circuit design
Speed classification must maintain Fast Recovery characteristics
Reverse Recovery Time (trr) must support circuit switching requirements

Mechanical Compatibility Criteria:

Package / Case must be DO-214AA (SMB) or mechanically equivalent
Mounting Type must be Surface Mount
Operating Temperature range must encompass -50°C to 150°C junction temperature

Compliance Criteria:

RoHS3 Compliance required
Moisture Sensitivity Level (MSL) of 1 (Unlimited) preferred for manufacturing flexibility

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications, different package options) and functional substitutes (enhanced electrical ratings with same package compatibility).

Parameter Comparison

Parameter	FR1A-TP (Micro Commercial Co)	FR1A (Diotec Semiconductor)	FR1A_R1_00001 (Panjit International Inc.)	ES2AHE3_A/H (Vishay General Semiconductor)
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	50 V
Current - Average Rectified (Io)	1 A	1 A	1 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	1.3 V @ 1 A	900 mV @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns	20 ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	1 µA @ 50 V	10 µA @ 50 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-50 to 150 °C	-50 to 150 °C	-50 to 150 °C	-55 to 150 °C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacement):

The FR1A manufactured by Diotec Semiconductor and FR1A_R1_00001 manufactured by Panjit International Inc. are parametric equivalents to the FR1A-TP. Both parts maintain identical electrical specifications (50 V, 1 A, 1.3 V forward voltage, 150 ns recovery time) and surface mount technology. The Diotec FR1A uses a DO-214AC (SMA) package variant, which requires PCB layout modification. The Panjit FR1A_R1_00001 maintains the DO-214AA (SMB) package, enabling direct footprint compatibility. Both manufacturers maintain active product status and ROHS3 compliance.

Functional Substitute (Enhanced Rating):

The ES2AHE3_A/H manufactured by Vishay General Semiconductor provides a functional substitute with enhanced current rating (2 A versus 1 A) and superior reverse recovery time (20 ns versus 150 ns). This part maintains 50 V reverse voltage rating and DO-214AA (SMB) package compatibility. The ES2AHE3_A/H carries AEC-Q101 automotive qualification and active product status. The enhanced specifications support applications requiring improved switching performance and higher current capacity within the same thermal package.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing processes. The Panjit FR1A_R1_00001 offers the highest inventory availability (919 pcs) with direct package compatibility. The Vishay ES2AHE3_A/H provides the largest inventory (1038 pcs) with automotive-grade qualification.

Frequently Asked Questions (FAQ)

Q: Can the FR1A-TP be replaced with the Vishay ES2AHE3_A/H in existing designs?

A: Yes. The ES2AHE3_A/H maintains identical 50 V reverse voltage rating and DO-214AA (SMB) package footprint. The 2 A current rating is a superset of the 1 A requirement, and the 20 ns reverse recovery time is superior to the original 150 ns specification. No PCB modifications are required.

Q: What is the difference between the Diotec FR1A and Panjit FR1A_R1_00001?

A: Both parts are parametric equivalents with identical electrical specifications. The primary difference is package format: Diotec uses DO-214AC (SMA), while Panjit uses DO-214AA (SMB). The Panjit part enables direct footprint replacement without PCB layout changes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The FR1A (Diotec), FR1A_R1_00001 (Panjit), and ES2AHE3_A/H (Vishay) are all ROHS3 compliant, matching the compliance status of the original FR1A-TP.

Q: Does the Vishay ES2AHE3_A/H require circuit design modifications?

A: No circuit design modifications are required. The ES2AHE3_A/H is electrically compatible with applications designed for the FR1A-TP. The enhanced specifications (2 A current, 20 ns recovery time) provide improved performance margins without requiring design changes.

Q: Which substitute part offers the best long-term availability?

A: The Panjit FR1A_R1_00001 and Vishay ES2AHE3_A/H both maintain active product status, ensuring long-term availability. The Vishay part carries AEC-Q101 automotive qualification, providing additional supply chain stability for automotive and industrial applications.

Q: Can the FR1A (Diotec) be used as a direct PCB replacement?

A: The Diotec FR1A requires PCB layout modification due to its DO-214AC (SMA) package format, which differs from the original DO-214AA (SMB) package. The Panjit FR1A_R1_00001 is recommended for direct PCB replacement without layout changes.

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