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CEFA105-G Equivalent & Substitute Parts Reference
Part Overview
The CEFA105-G is a superfast recovery 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 part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.
The CEFA105-G is designed for general-purpose rectification in power supply circuits, switching applications, and other rectifier functions requiring fast recovery characteristics. Due to its obsolete status, alternative parts with equivalent electrical and mechanical specifications are required for design continuity and component sourcing.
Substiute Parts
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 |
| Reverse Recovery Time (trr) | 50 | ns |
| Current - Reverse Leakage @ Vr | 5 | µA @ 600 V |
| Speed Classification | Fast Recovery ≤ 500ns, > 200mA (Io) | — |
| Mounting Type | Surface Mount | — |
| Package / Case | DO-214AC, SMA | — |
| Operating Temperature - Junction (Max) | 150 | °C |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the CEFA105-G is determined by the following critical parameters:
Mandatory Matching Parameters:
- Voltage - DC Reverse (Vr): 600 V
- Current - Average Rectified (Io): 1 A
- Mounting Type: Surface Mount
- Package / Case: DO-214AC (SMA) or compatible mechanical equivalent
- Moisture Sensitivity Level: 1 (Unlimited)
Allowable Variation Parameters:
- Voltage - Forward (Vf): Substitute parts may range from 1.0 V to 1.7 V @ 1 A (CEFA105-G specifies 1.3 V maximum)
- Reverse Recovery Time (trr): Substitute parts may range from 35 ns to 2 µs (CEFA105-G specifies 50 ns)
- Speed Classification: Both fast recovery (≤ 500ns) and standard recovery (> 500ns) parts are acceptable
- Current - Reverse Leakage: Substitute parts may range from 5 µA to 10 µA @ 600 V
- Operating Temperature - Junction: Substitute parts may extend to -65°C to 175°C range (CEFA105-G specifies -65°C to 150°C maximum)
Substitute parts are grouped into two categories: parametric equivalents (CFRA105-G) and manufacturer-recommended alternatives (CMR1U-06M TR13 PBFREE, ES1J-LTP, GF1J, GF1J-E3/67A, GS1J-LTP, GS1JE-TPS05, MRA4005T1G, MRA4005T3G, NRVA4005T3G).
Parameter Comparison
| Part Number | Manufacturer | Vr (Max) V | Io (A) | Vf (Max) @ 1A (V) | trr (ns) | Speed | Package | Status |
|---|---|---|---|---|---|---|---|---|
| CEFA105-G | Comchip Technology | 600 | 1 | 1.3 | 50 | Fast Recovery ≤ 500ns | DO-214AC (SMA) | Obsolete |
| CFRA105-G | Comchip Technology | 600 | 1 | 1.3 | 250 | Fast Recovery ≤ 500ns | DO-214AC (SMA) | Active |
| CMR1U-06M TR13 PBFREE | Central Semiconductor Corp | 600 | 1 | 1.4 | 75 | Fast Recovery ≤ 500ns | DO-214AC (SMA) | Active |
| ES1J-LTP | Micro Commercial Co | 600 | 1 | 1.7 | 35 | Fast Recovery ≤ 500ns | DO-214AC (SMA) | Active |
| GF1J | onsemi | 600 | 1 | 1.0 | 2000 | Standard Recovery > 500ns | DO-214AC (SMA) | Not For New Designs |
| GF1J-E3/67A | Vishay General Semiconductor - Diodes Division | 600 | 1 | 1.1 | 2000 | Standard Recovery > 500ns | DO-214BA (GF1) | Active |
| GS1J-LTP | Micro Commercial Co | 600 | 1 | 1.0 | — | Standard Recovery > 500ns | DO-214AC (SMA) | Active |
| GS1JE-TPS05 | Micro Commercial Co | 600 | 1 | 1.1 | 2000 | Standard Recovery > 500ns | DO-214AC (SMA) | Active |
| MRA4005T1G | onsemi | 600 | 1 | 1.1 | — | Standard Recovery > 500ns | DO-214AC (SMA) | Not For New Designs |
| MRA4005T3G | onsemi | 600 | 1 | 1.1 | — | Standard Recovery > 500ns | DO-214AC (SMA) | Not For New Designs |
| NRVA4005T3G | onsemi | 600 | 1 | 1.1 | — | Standard Recovery > 500ns | DO-214AC (SMA) | Not For New Designs |
Engineering Selection Recommendations
Primary Substitute (Parametric Equivalent): CFRA105-G (Comchip Technology) is the direct parametric equivalent to CEFA105-G. Both parts share identical voltage, current, and forward voltage specifications. CFRA105-G is active in production status and available in higher inventory quantities (724 Pcs). The primary difference is reverse recovery time (250 ns vs. 50 ns), which remains within the fast recovery classification (≤ 500ns). CFRA105-G carries ROHS3 compliance.
Manufacturer-Recommended Substitutes (Active Status):
CMR1U-06M TR13 PBFREE (Central Semiconductor Corp) is an active production part with the highest inventory availability (47,646 Pcs). It meets all mandatory electrical parameters with forward voltage of 1.4 V @ 1 A and reverse recovery time of 75 ns. Operating temperature range extends to 175°C. ROHS3 compliant.
ES1J-LTP (Micro Commercial Co) is an active production part with high inventory (55,300 Pcs). It maintains fast recovery characteristics (35 ns trr) and includes capacitance specification (15 pF @ 4V, 1MHz). Forward voltage is 1.7 V @ 1 A. Operating temperature range extends to 175°C. ROHS3 compliant.
GF1J-E3/67A (Vishay General Semiconductor - Diodes Division) is an active production part with 18,426 Pcs inventory. It features the SUPERECTIFIER® series designation and operates with standard recovery characteristics. Package is DO-214BA (GF1), which is mechanically compatible with DO-214AC (SMA). Forward voltage is 1.1 V @ 1 A. ROHS3 compliant.
GS1J-LTP (Micro Commercial Co) is an active production part with standard recovery characteristics and forward voltage of 1.0 V @ 1 A. Operating temperature range is -55°C to 150°C. ROHS3 compliant.
GS1JE-TPS05 (Micro Commercial Co) is an active production part with standard recovery characteristics, forward voltage of 1.1 V @ 1 A, and reverse recovery time of 2 µs. Operating temperature range is -55°C to 150°C. ROHS3 compliant.
Legacy Status Parts (Not For New Designs): GF1J, MRA4005T1G, MRA4005T3G, and NRVA4005T3G are classified as "Not For New Designs" and should not be selected for new product development. These parts are listed for reference in legacy system maintenance only. NRVA4005T3G carries AEC-Q101 automotive qualification.
Frequently Asked Questions (FAQ)
Q: Can CFRA105-G directly replace CEFA105-G in existing designs?
A: Yes. CFRA105-G is the parametric equivalent with identical voltage (600 V), current (1 A), and forward voltage (1.3 V @ 1 A) specifications. The reverse recovery time difference (250 ns vs. 50 ns) does not affect compatibility because both remain within the fast recovery classification (≤ 500ns). CFRA105-G is active in production and recommended for immediate substitution.
Q: What is the difference between fast recovery and standard recovery diodes in this list?
A: Fast recovery diodes (CEFA105-G, CFRA105-G, CMR1U-06M TR13 PBFREE, ES1J-LTP) have reverse recovery times ≤ 500ns and are suitable for high-frequency switching applications. Standard recovery diodes (GF1J, GF1J-E3/67A, GS1J-LTP, GS1JE-TPS05, MRA4005T1G, MRA4005T3G, NRVA4005T3G) have reverse recovery times > 500ns and are suitable for lower-frequency rectification. Selection depends on circuit switching frequency requirements.
Q: Are all substitute parts RoHS3 compliant?
A: All active production substitute parts listed (CFRA105-G, CMR1U-06M TR13 PBFREE, ES1J-LTP, GF1J-E3/67A, GS1J-LTP, GS1JE-TPS05, MRA4005T1G, MRA4005T3G, NRVA4005T3G) are ROHS3 compliant. The original CEFA105-G does not specify RoHS status.
Q: Can I use GF1J-E3/67A if my circuit requires DO-214AC (SMA) package?
A: GF1J-E3/67A uses DO-214BA (GF1) package instead of DO-214AC (SMA). While both are surface mount packages with similar form factors, mechanical compatibility must be verified against your PCB footprint design. If your design requires strict DO-214AC (SMA) compatibility, select from CFRA105-G, CMR1U-06M TR13 PBFREE, ES1J-LTP, GS1J-LTP, or GS1JE-TPS05.
Q: What is the significance of the NRVA4005T3G automotive qualification?
A: NRVA4005T3G carries AEC-Q101 automotive qualification, indicating it meets automotive industry reliability and testing standards. This part is suitable for automotive applications requiring qualified components. However, it is classified as "Not For New Designs," limiting its use to legacy automotive system maintenance.
Q: Which substitute part has the lowest forward voltage drop?
A: GF1J and GS1J-LTP both specify 1.0 V forward voltage @ 1 A, the lowest among all listed parts. GF1J-E3/67A and GS1JE-TPS05 specify 1.1 V @ 1 A. Lower forward voltage reduces power dissipation in rectification circuits. However, GF1J is "Not For New Designs," so GS1J-LTP or GS1JE-TPS05 are preferred for new applications requiring minimum forward voltage.
Q: What inventory considerations should guide my selection?
A: MRA4005T1G and MRA4005T3G offer the highest inventory availability (820,300 Pcs and 820,400 Pcs respectively), though both are "Not For New Designs." For active production parts, CMR1U-06M TR13 PBFREE (47,646 Pcs) and ES1J-LTP (55,300 Pcs) provide substantial inventory. CFRA105-G (724 Pcs) offers direct parametric equivalence with moderate availability.
Q: Are all substitute parts rated for the same operating temperature range?
A: No. CEFA105-G specifies -65°C to 150°C maximum junction temperature. CMR1U-06M TR13 PBFREE, ES1J-LTP, GF1J, and GF1J-E3/67A extend to -65°C to 175°C. GS1J-LTP and GS1JE-TPS05 are limited to -55°C to 150°C. Verify operating temperature requirements against your application before selection.
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