CFRA107-G Equivalent & Substitute Parts Reference

Part Overview

The CFRA107-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 1000 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 with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit alternative manufacturers while maintaining electrical and mechanical compatibility. Equivalent diodes must match critical parameters including reverse voltage rating, forward current capacity, recovery characteristics, and package footprint.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	1000	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)	500	ns
Current - Reverse Leakage @ Vr	5	µA @ 1000 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

Substitution logic for the CFRA107-G is based on the following critical parameters that must be matched or exceeded:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr): 1000 V minimum
Current - Average Rectified (Io): 1 A minimum
Mounting Type: Surface Mount
Package compatibility: DO-214AC (SMA) or equivalent footprint

Performance Characteristics: Substitute parts are grouped into two categories based on recovery speed:

Category 1: Fast Recovery (≤ 500ns) Parts with reverse recovery time of 500 ns or less maintain identical switching performance to the CFRA107-G. These include RGF1M-E3/67A, RS1M, and RS1M-13-F. Fast recovery diodes are suitable for applications requiring minimal switching losses and high-frequency operation.

Category 2: Standard Recovery (> 500ns) Parts with reverse recovery time of 2 µs represent standard recovery technology. These include GF1M, GF1M-E3/5CA, GF1M-E3/67A (Vishay), and GS1M-LTP. Standard recovery diodes are suitable for lower-frequency applications where switching speed is less critical.

Forward Voltage Consideration: Forward voltage ranges from 1.0 V to 1.3 V across all listed substitutes. The CFRA107-G specifies 1.3 V maximum at 1 A. Substitutes with lower forward voltage (1.0 V to 1.2 V) offer improved efficiency but remain functionally compatible.

Reverse Leakage Current: Leakage current ranges from 5 µA to 10 µA at rated reverse voltage. The CFRA107-G specifies 5 µA. Substitutes with 10 µA leakage remain within acceptable limits for general-purpose rectification.

Package Variants: DO-214AC (SMA) and DO-214BA (GF1) packages are mechanically distinct. DO-214BA parts (RGF1M-E3/67A, GF1M-E3/5CA, GF1M-E3/67A from Vishay) require PCB footprint modification and are not direct pin-compatible substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ 1A (V)	Speed	trr (ns/µs)	Ir @ Vr (µA)	Package	Product Status
CFRA107-G	Comchip Technology	1000	1	1.3	Fast Recovery ≤ 500ns	500 ns	5 @ 1000V	DO-214AC (SMA)	Active
RGF1M-E3/67A	Vishay General Semiconductor	1000	1	1.3	Fast Recovery ≤ 500ns	500 ns	5 @ 1000V	DO-214BA (GF1)	Active
RS1M	EVVO Semi	1000	1	1.3	Fast Recovery ≤ 500ns	500 ns	5 @ 1 kV	DO-214AC (SMA)	Active
RGF1M	onsemi	1000	1	1.3	Fast Recovery ≤ 500ns	500 ns	5 @ 1000V	DO-214AC (SMA)	Not For New Designs
RS1M-13-F	Diodes Incorporated	1000	1	1.3	Fast Recovery ≤ 500ns	500 ns	5 @ 1000V	DO-214AC (SMA)	Active
GF1M	onsemi	1000	1	1.2	Standard Recovery > 500ns	2 µs	5 @ 1000V	DO-214AC (SMA)	Not For New Designs
GF1M-E3/5CA	Vishay General Semiconductor	1000	1	1.2	Standard Recovery > 500ns	2 µs	5 @ 1000V	DO-214BA (GF1)	Active
GF1M-E3/67A	Vishay General Semiconductor	1000	1	1.2	Standard Recovery > 500ns	2 µs	5 @ 1000V	DO-214BA (GF1)	Active
GS1M-LTP	Micro Commercial Co	1000	1	1.0	Standard Recovery > 500ns	Not specified	10 @ 1000V	DO-214AC (SMA)	Active
MRA4007T3G	onsemi	1000	1	1.1	Standard Recovery > 500ns	Not specified	10 @ 1000V	DO-214AC (SMA)	Not For New Designs
RS1K-13-F	Diodes Incorporated	800	1	1.3	Fast Recovery ≤ 500ns	500 ns	5 @ 800V	DO-214AC (SMA)	Active

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical and Mechanical Characteristics):

RS1M-13-F (Diodes Incorporated) and RS1M (EVVO Semi) are direct substitutes for CFRA107-G. Both maintain 1000 V reverse voltage, 1 A current rating, fast recovery characteristics (500 ns), and DO-214AC (SMA) package compatibility. Both are Active product status with RoHS3 compliance and unlimited MSL rating. RS1M-13-F offers significantly higher inventory availability (189,953 pcs) compared to CFRA107-G (894 pcs).

Fast Recovery Alternatives with Package Modification:

RGF1M-E3/67A (Vishay General Semiconductor) provides identical electrical performance to CFRA107-G with fast recovery (500 ns) and 1000 V / 1 A ratings. However, this part uses DO-214BA (GF1) package, requiring PCB footprint redesign. RGF1M-E3/67A is Active product status with 7,790 pcs inventory.

RGF1M (onsemi) matches CFRA107-G electrically and mechanically but carries "Not For New Designs" product status, indicating obsolescence trajectory. This part should be avoided for new designs despite technical compatibility.

Standard Recovery Alternatives:

GF1M-E3/67A (Vishay General Semiconductor) and GF1M-E3/5CA (Vishay General Semiconductor) offer standard recovery characteristics (2 µs) with slightly lower forward voltage (1.2 V). Both use DO-214BA package and are Active product status. These parts are suitable for applications where switching speed is not critical and lower forward voltage improves efficiency.

GS1M-LTP (Micro Commercial Co) provides the lowest forward voltage (1.0 V) among all substitutes with standard recovery characteristics. This part maintains DO-214AC (SMA) package compatibility and Active product status. Higher reverse leakage current (10 µA) remains acceptable for general-purpose rectification.

MRA4007T3G (onsemi) carries "Not For New Designs" status and should not be selected for new applications despite technical compatibility.

Voltage Derating:

RS1K-13-F (Diodes Incorporated) is rated for 800 V reverse voltage, representing a 200 V reduction from CFRA107-G specification. This part is not suitable as a direct substitute and should only be considered in applications where 800 V reverse voltage margin is sufficient.

Compliance and Certification:

All recommended substitutes maintain RoHS3 compliance and unlimited MSL rating (MSL 1), matching CFRA107-G environmental specifications. REACH status is unaffected for all listed parts. ECCN classification remains EAR99 across all substitutes.

Frequently Asked Questions (FAQ)

Q: Can RS1M-13-F directly replace CFRA107-G without PCB modification?

A: Yes. RS1M-13-F maintains identical electrical specifications (1000 V, 1 A, fast recovery 500 ns) and uses the same DO-214AC (SMA) package. No PCB footprint changes are required. Both parts are Active product status with RoHS3 compliance.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes (≤ 500ns reverse recovery time) minimize switching losses and are suitable for high-frequency applications. Standard recovery diodes (> 500ns, typically 2 µs) are adequate for lower-frequency rectification. CFRA107-G specifies fast recovery at 500 ns. Substitutes with standard recovery (GF1M series, GS1M-LTP, MRA4007T3G) are functionally compatible but exhibit higher switching losses.

Q: Why do some substitutes use DO-214BA package instead of DO-214AC?

A: DO-214BA (GF1) and DO-214AC (SMA) are distinct surface mount packages with different PCB footprints and lead configurations. Parts using DO-214BA package (RGF1M-E3/67A, GF1M-E3/5CA, GF1M-E3/67A) require PCB redesign and cannot be used as drop-in replacements. Verify package compatibility before selection.

Q: Is forward voltage difference significant between 1.0 V and 1.3 V?

A: Forward voltage variation from 1.0 V to 1.3 V affects power dissipation and efficiency. Lower forward voltage (GS1M-LTP at 1.0 V) reduces heat generation. CFRA107-G specifies 1.3 V maximum. Substitutes with lower forward voltage improve efficiency but remain electrically compatible. Verify thermal design margins in your application.

Q: Can I use RS1K-13-F (800 V rated) instead of CFRA107-G (1000 V rated)?

A: No. RS1K-13-F is rated for 800 V reverse voltage, providing 200 V less margin than CFRA107-G. This part is not suitable as a substitute unless your application operates at significantly lower voltages with adequate safety margin below 800 V. Always maintain the specified voltage rating.

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

A: "Not For New Designs" indicates the manufacturer is discontinuing the part and recommends alternative components for new applications. Parts with this status (RGF1M, MRA4007T3G) should be avoided in new designs despite technical compatibility. Use Active product status parts (RS1M-13-F, GF1M-E3/67A, GS1M-LTP) for new applications.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and unlimited MSL rating (MSL 1), matching CFRA107-G environmental specifications. REACH status is unaffected for all parts.

Q: What is the inventory advantage of using RS1M-13-F?

A: RS1M-13-F (Diodes Incorporated) has 189,953 pcs in stock compared to CFRA107-G with 894 pcs. This 200x inventory advantage significantly reduces lead time risk and supply chain vulnerability for high-volume production.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all parts meet your application requirements. However, mixing fast recovery (500 ns) and standard recovery (2 µs) diodes in the same circuit may introduce performance inconsistencies. Standardize on a single substitute part number for consistency and simplified procurement.

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