CFRA105-G Equivalent & Substitute Parts Reference

Part Overview

The CFRA105-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 600 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical ratings, recovery characteristics, and package compatibility to ensure functional interchangeability in circuit applications.

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	V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	250	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the CFRA105-G are grouped based on the following substitution criteria:

Primary Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A (or within acceptable tolerance)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 250 ns
Current - Reverse Leakage @ Vr: 5 µA @ 600 V
Mounting Type: Surface Mount
Package / Case: DO-214AC (SMA) or DO-214BA (GF1)

Substitution Categories:

Direct Equivalents (Identical Package DO-214AC/SMA): Parts that maintain the same package footprint and all critical electrical parameters.

Package-Compatible Substitutes (DO-214BA/GF1): Parts with different package geometry but equivalent electrical performance. DO-214BA (GF1) package is mechanically compatible with DO-214AC (SMA) in most PCB layouts due to similar lead spacing.

Performance-Variant Substitutes: Parts with variations in forward voltage, recovery time, or leakage current that remain within acceptable operating ranges for general-purpose rectification applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ 1A (V)	trr (ns)	Ir @ 600V (µA)	Package	Product Status
CFRA105-G	Comchip Technology	600	1	1.3	250	5	DO-214AC	Active
RGF1J-E3/5CA	Vishay General Semiconductor	600	1	1.3	250	5	DO-214BA	Active
RS1J	Taiwan Semiconductor Corporation	600	1	1.3	250	5	DO-214AC	Active
RS1J-E3/61T	Vishay General Semiconductor	600	1	1.3	250	5	DO-214AC	Active
RS1J-13-F	Diodes Incorporated	600	1	1.3	250	5	DO-214AC	Active
ES1J-LTP	Micro Commercial Co	600	1	1.7	35	5	DO-214AC	Active
GF1J	onsemi	600	1	1.0	2000	5	DO-214AC	Not For New Designs
GF1J-E3/67A	Vishay General Semiconductor	600	1	1.1	2000	5	DO-214BA	Active
GS1J-LTP	Micro Commercial Co	600	1	1.0	—	10	DO-214AC	Active
MRA4005T1G	onsemi	600	1	1.1	—	10	DO-214AC	Not For New Designs
MRA4005T3G	onsemi	600	1	1.1	—	10	DO-214AC	Not For New Designs

Engineering Selection Recommendations

Tier 1 - Preferred Direct Substitutes (Active Status, Identical Package DO-214AC):

RS1J (Taiwan Semiconductor Corporation) and RS1J-13-F (Diodes Incorporated) are recommended as primary substitutes. Both maintain identical electrical specifications to the CFRA105-G, including 600 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage at 1 A, and 250 ns reverse recovery time. Both are Active product status and RoHS3 compliant. RS1J-13-F offers the highest inventory availability (151,735 pcs).

RS1J-E3/61T (Vishay General Semiconductor) is also a direct equivalent with Active status and identical electrical parameters in DO-214AC package.

Tier 2 - Package-Compatible Substitutes (Active Status, DO-214BA Package):

RGF1J-E3/5CA (Vishay General Semiconductor) provides identical electrical performance with Active product status. The DO-214BA (GF1) package is mechanically compatible with DO-214AC (SMA) for PCB layout purposes. This part is part of the SUPERECTIFIER® series and maintains all critical electrical parameters.

Tier 3 - Performance-Variant Substitutes (Active Status):

ES1J-LTP (Micro Commercial Co) maintains 600 V reverse voltage and 1 A current rating with Active status. Forward voltage is 1.7 V at 1 A (higher than CFRA105-G at 1.3 V) and reverse recovery time is 35 ns (faster than CFRA105-G at 250 ns). This part is suitable for applications where faster switching is beneficial.

GS1J-LTP (Micro Commercial Co) offers 1.0 V forward voltage with Active status but has 10 µA reverse leakage (higher than CFRA105-G at 5 µA). Reverse recovery time specification is not provided.

Not Recommended for New Designs:

GF1J (onsemi), MRA4005T1G (onsemi), and MRA4005T3G (onsemi) are marked as "Not For New Designs" and should not be selected for new circuit development, although they remain functionally compatible.

Frequently Asked Questions (FAQ)

Q: Can RS1J be used as a direct replacement for CFRA105-G?

A: Yes. RS1J matches all critical electrical parameters: 600 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage at 1 A, 250 ns reverse recovery time, and 5 µA reverse leakage at 600 V. Both use DO-214AC (SMA) package. RS1J is Active product status and RoHS3 compliant.

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

A: DO-214AC (SMA) and DO-214BA (GF1) are both surface mount diode packages with similar lead spacing and footprint compatibility. The primary difference is the package outline geometry. Parts in DO-214BA package (such as RGF1J-E3/5CA) can substitute for DO-214AC parts in most PCB layouts without requiring design changes.

Q: Why does ES1J-LTP have different electrical specifications?

A: ES1J-LTP has 1.7 V forward voltage (versus 1.3 V for CFRA105-G) and 35 ns reverse recovery time (versus 250 ns). These differences indicate different semiconductor technology. ES1J-LTP is suitable for applications requiring faster switching characteristics, though it will generate slightly more forward voltage drop.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and have Moisture Sensitivity Level (MSL) of 1 (Unlimited), matching the CFRA105-G compliance profile.

Q: Which substitute has the highest inventory availability?

A: RS1J-13-F (Diodes Incorporated) has the highest inventory with 151,735 pcs in stock, followed by MRA4005T3G (onsemi) with 820,400 pcs, though MRA4005T3G is marked "Not For New Designs."

Q: Can I use GF1J or MRA4005 series parts?

A: GF1J and MRA4005 series parts are functionally compatible but are marked "Not For New Designs." These parts should only be used for legacy system maintenance or repair, not for new circuit development.

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

A: Reverse recovery time determines how quickly the diode stops conducting when reverse bias is applied. CFRA105-G has 250 ns trr (fast recovery). Parts with shorter trr (such as ES1J-LTP at 35 ns) switch faster and generate less switching noise. Parts with longer trr (such as GF1J at 2 µs) are slower but may be acceptable in low-frequency applications.

Q: Are there any temperature rating differences?

A: CFRA105-G has maximum junction temperature of 150°C. Some substitutes (RGF1J-E3/5CA, ES1J-LTP, GF1J-E3/67A, GF1J) support up to 175°C. This provides additional thermal margin in high-temperature applications but does not affect substitutability in standard operating conditions.

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