RGF1A Equivalent & Substitute Parts

Part Overview

The RGF1A is a general-purpose rectifier diode manufactured by onsemi, rated for 50 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as Not For New Designs, indicating it has been superseded in onsemi's product portfolio. For applications requiring equivalent or substitute components, alternative parts with matching or superior electrical characteristics and active product status are available from multiple manufacturers.

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	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 50 V
Mounting Type	Surface Mount	-
Package / Case	DO-214AC, SMA	-
Operating Temperature - Junction	-65 to 175	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the RGF1A is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 50 V minimum
Current - Average Rectified (Io): 1 A minimum
Mounting Type: Surface Mount
Package compatibility: DO-214AC (SMA) or equivalent footprint

Performance Considerations:

Forward voltage (Vf) at 1 A: Lower values indicate improved efficiency
Reverse recovery time (trr): Faster recovery enables higher frequency operation
Reverse leakage current: Lower values indicate better blocking characteristics
Operating temperature range: Extended range provides design flexibility

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (50 V, 1 A, Standard Technology) Parts meeting all mandatory parameters with standard rectifier diode technology. These include RS1A, CGRA4001-G, ES1A-E3/5AT, ES1A-E3/61T, ES1A-13-F, EGF1A-E3/67A, and EGF1A-E3/5CA.

Category 2: Enhanced Performance Alternatives (60 V, 1 A, Schottky Technology) Parts with higher voltage rating (60 V) and Schottky technology, offering lower forward voltage drop. These include CMSH1-60M BK PBFREE and CMSH1-60M TR13 PBFREE. These parts are suitable for applications where lower forward voltage loss is beneficial, though they exhibit higher reverse leakage current.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ 1A	trr	Package	Temp Range	Product Status	Technology
RGF1A	onsemi	50 V	1 A	1.3 V	150 ns	DO-214AC	-65 to 175°C	Not For New Designs	Standard
RS1A	Taiwan Semiconductor Corporation	50 V	1 A	1.3 V	150 ns	DO-214AC	-55 to 150°C	Active	Standard
RGF1A-E3/67A	Vishay General Semiconductor - Diodes Division	50 V	1 A	1.3 V	150 ns	DO-214BA	-65 to 175°C	Active	Standard
CGRA4001-G	Comchip Technology	50 V	1 A	1.1 V	-	DO-214AC	-55 to 150°C	Active	Standard
CMSH1-60M BK PBFREE	Central Semiconductor Corp	60 V	1 A	700 mV	-	DO-214AC	-65 to 150°C	Active	Schottky
CMSH1-60M TR13 PBFREE	Central Semiconductor Corp	60 V	1 A	700 mV	-	DO-214AC	-65 to 150°C	Active	Schottky
EGF1A-E3/5CA	Vishay General Semiconductor - Diodes Division	50 V	1 A	1.0 V	50 ns	DO-214BA	-65 to 175°C	Active	Standard
EGF1A-E3/67A	Vishay General Semiconductor - Diodes Division	50 V	1 A	1.0 V	50 ns	DO-214BA	-65 to 175°C	Active	Standard
ES1A-13-F	Diodes Incorporated	50 V	1 A	920 mV	25 ns	DO-214AC	-55 to 150°C	Active	Standard
ES1A-E3/5AT	Vishay General Semiconductor - Diodes Division	50 V	1 A	920 mV	25 ns	DO-214AC	-55 to 155°C	Active	Standard
ES1A-E3/61T	Vishay General Semiconductor - Diodes Division	50 V	1 A	920 mV	25 ns	DO-214AC	-55 to 150°C	Active	Standard

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

RS1A from Taiwan Semiconductor Corporation provides electrical equivalence to RGF1A with identical voltage, current, and forward voltage specifications. RS1A maintains Active product status and ROHS3 compliance. The operating temperature range is reduced to -55 to 150°C compared to RGF1A's -65 to 175°C. This part is suitable for applications where the narrower temperature range is acceptable.

For Enhanced Performance with Maintained Compatibility:

EGF1A-E3/67A and EGF1A-E3/5CA from Vishay General Semiconductor - Diodes Division offer improved electrical characteristics with lower forward voltage (1.0 V vs. 1.3 V) and faster reverse recovery time (50 ns vs. 150 ns). Both parts maintain the full operating temperature range of -65 to 175°C and Active product status. Package variant is DO-214BA instead of DO-214AC; footprint compatibility must be verified for the specific application. These parts are from the SUPERECTIFIER® series.

ES1A-E3/5AT and ES1A-E3/61T from Vishay General Semiconductor - Diodes Division provide superior performance with forward voltage of 920 mV and reverse recovery time of 25 ns. Both maintain 50 V / 1 A ratings and ROHS3 compliance. Operating temperature range is -55 to 155°C (ES1A-E3/5AT) or -55 to 150°C (ES1A-E3/61T). Package is DO-214AC (SMA), matching RGF1A footprint.

ES1A-13-F from Diodes Incorporated offers equivalent performance to ES1A-E3/5AT and ES1A-E3/61T with 920 mV forward voltage and 25 ns reverse recovery time. Operating temperature range is -55 to 150°C. Package is DO-214AC (SMA).

For Lower Forward Voltage Applications:

CMSH1-60M BK PBFREE and CMSH1-60M TR13 PBFREE from Central Semiconductor Corp employ Schottky technology, delivering significantly lower forward voltage (700 mV) at the cost of higher reverse leakage current (500 µA vs. 5 µA). Voltage rating is increased to 60 V. These parts are suitable for applications prioritizing efficiency over leakage characteristics. Operating temperature range is -65 to 150°C. Packaging options include Bulk (BK PBFREE) and Tape & Reel (TR13 PBFREE).

For Standard Recovery Applications:

CGRA4001-G from Comchip Technology provides 50 V / 1 A operation with lower forward voltage (1.1 V) but standard recovery speed (>500 ns). Operating temperature range is -55 to 150°C. This part is suitable for applications where fast recovery is not required.

All substitute parts listed maintain ROHS3 compliance, MSL 1 (Unlimited) rating, and REACH Unaffected status, matching the compliance profile of RGF1A.

Frequently Asked Questions (FAQ)

Q: Can RS1A be used as a direct replacement for RGF1A?

A: RS1A provides electrical equivalence with identical 50 V reverse voltage, 1 A current rating, and 1.3 V forward voltage. Both parts use DO-214AC (SMA) packaging and maintain ROHS3 compliance. The primary difference is the operating temperature range: RS1A operates from -55 to 150°C versus RGF1A's -65 to 175°C. Direct substitution is valid for applications within the -55 to 150°C range.

Q: What is the difference between DO-214AC and DO-214BA packages?

A: Both packages are surface mount diode packages with identical electrical footprints for the diode function. DO-214AC is also designated SMA, while DO-214BA is designated GF1. Physical dimensions and PCB land patterns differ between the two packages. Verify PCB layout compatibility before substituting parts with different package designations.

Q: Why do EGF1A-E3/67A and EGF1A-E3/5CA have lower forward voltage than RGF1A?

A: EGF1A-E3/67A and EGF1A-E3/5CA are part of Vishay's SUPERECTIFIER® series, which employs advanced semiconductor processing to achieve lower forward voltage (1.0 V) while maintaining the same 50 V / 1 A ratings. Lower forward voltage reduces power dissipation in the diode during conduction.

Q: Are Schottky diodes (CMSH1-60M series) suitable replacements for RGF1A?

A: CMSH1-60M BK PBFREE and CMSH1-60M TR13 PBFREE are Schottky diodes with 60 V rating and significantly lower forward voltage (700 mV). They are electrically compatible for 50 V applications due to the higher voltage rating. However, Schottky diodes exhibit higher reverse leakage current (500 µA vs. 5 µA). Substitution is valid only for applications where higher leakage current is acceptable and lower forward voltage loss is beneficial.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time indicates how quickly the diode transitions from conducting to blocking state when reverse voltage is applied. Faster recovery time (lower trr value) enables operation at higher switching frequencies with reduced switching losses. RGF1A has 150 ns trr, while ES1A variants have 25 ns trr, making ES1A variants suitable for higher frequency applications.

Q: Can I substitute RGF1A with a part having higher voltage rating?

A: Yes. A diode rated for 60 V (such as CMSH1-60M series) can be used in a 50 V application. The higher voltage rating provides additional safety margin. However, verify that other electrical characteristics (current rating, forward voltage, leakage current, temperature range) meet application requirements.

Q: What does "Not For New Designs" status mean for RGF1A?

A: This designation indicates that onsemi has discontinued active development and marketing of RGF1A. The part may still be available from inventory, but onsemi recommends using alternative parts for new designs. Active substitute parts such as RS1A, EGF1A-E3/67A, ES1A-E3/5AT, and others provide equivalent or superior performance with ongoing manufacturer support.

Q: Are all listed substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, matching RGF1A's compliance status. All parts also maintain MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and Bulk. Packaging selection depends on manufacturing volume and assembly process requirements. Verify packaging compatibility with your procurement and assembly workflow.

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