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GF1J Equivalent & Substitute Parts
Part Overview
The GF1J is a general-purpose rectifier diode manufactured by onsemi, rated for 600 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status within onsemi's product portfolio. Identification of equivalent and substitute parts is necessary for design continuity, legacy system support, and procurement flexibility when the primary part becomes unavailable or when alternative sourcing is required.
Substiute Parts
Key Parameters
| Parameter | GF1J Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) (Max) | 600 | V |
| Current - Average Rectified (Io) | 1 | A |
| Voltage - Forward (Vf) (Max) @ If | 1 | V @ 1 A |
| Reverse Recovery Time (trr) | 2 | µs |
| Current - Reverse Leakage @ Vr | 5 | µA @ 600 V |
| Package / Case | DO-214AC, SMA | — |
| Mounting Type | Surface Mount | — |
| Operating Temperature - Junction | -65°C ~ 175°C | — |
| Technology | Standard | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the GF1J is determined by the following critical electrical and mechanical parameters:
Primary Substitution Criteria:
- Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
- Current - Average Rectified (Io): Must equal or exceed 1 A
- Package / Case: Must be DO-214AC (SMA) surface mount
- Mounting Type: Must be surface mount
- RoHS Status: Must maintain ROHS3 compliance
Secondary Compatibility Factors:
- Forward voltage (Vf) at rated current
- Reverse recovery time (trr) and recovery speed classification
- Reverse leakage current at rated voltage
- Operating temperature range
Substitute parts are grouped into two categories:
Category A - Direct Electrical Equivalents (600 V, 1 A): Parts with identical voltage and current ratings, matching the GF1J electrical specification exactly. These include MRA4005T1G, MRA4005T3G, NRVA4005T3G, RS1J, CGRA4005-G, CMR1-06M BK PBFREE, CMR1-06M TR13 PBFREE, and ES1J-LTP.
Category B - Higher Voltage Rating (1000 V, 1 A): MRA4007T3G provides enhanced voltage capability while maintaining 1 A current rating. This part is suitable for applications where higher voltage margin is beneficial.
Category C - Lower Voltage Rating (400 V, 1 A): MRA4004T3G is suitable only for applications where the circuit voltage requirement does not exceed 400 V. This part is not recommended as a direct substitute for 600 V applications.
Parameter Comparison
| Part Number | Manufacturer | Vr (Max) [V] | Io [A] | Vf (Max) @ 1A [V] | trr [µs/ns] | Ir @ Vr [µA] | Package | Product Status | Temp Range [°C] |
|---|---|---|---|---|---|---|---|---|---|
| GF1J | onsemi | 600 | 1 | 1.0 | 2 µs | 5 @ 600V | DO-214AC (SMA) | Not For New Designs | -65 ~ 175 |
| MRA4004T3G | onsemi | 400 | 1 | 1.1 | >500ns | 10 @ 400V | DO-214AC, SMA | Not For New Designs | -55 ~ 175 |
| MRA4005T1G | onsemi | 600 | 1 | 1.1 | >500ns | 10 @ 600V | DO-214AC, SMA | Not For New Designs | -55 ~ 175 |
| MRA4005T3G | onsemi | 600 | 1 | 1.1 | >500ns | 10 @ 600V | DO-214AC, SMA | Not For New Designs | -55 ~ 175 |
| MRA4007T3G | onsemi | 1000 | 1 | 1.1 | >500ns | 10 @ 1000V | DO-214AC, SMA | Not For New Designs | -55 ~ 175 |
| NRVA4005T3G | onsemi | 600 | 1 | 1.1 | >500ns | 10 @ 600V | DO-214AC, SMA | Not For New Designs | -55 ~ 150 |
| RS1J | Taiwan Semiconductor Corporation | 600 | 1 | 1.3 | 250 ns | 5 @ 600V | DO-214AC (SMA) | Active | -55 ~ 150 |
| CGRA4005-G | Comchip Technology | 600 | 1 | 1.1 | ≤500ns | 5 @ 600V | DO-214AC (SMA) | Active | -55 ~ 150 |
| CMR1-06M BK PBFREE | Central Semiconductor Corp | 600 | 1 | 1.1 | >500ns | 5 @ 600V | DO-214AC, SMA | Active | -65 ~ 150 |
| CMR1-06M TR13 PBFREE | Central Semiconductor Corp | 600 | 1 | 1.1 | >500ns | 5 @ 600V | DO-214AC, SMA | Active | -65 ~ 150 |
| ES1J-LTP | Micro Commercial Co | 600 | 1 | 1.7 | 35 ns | 5 @ 600V | DO-214AC (SMA) | Active | -65 ~ 175 |
Engineering Selection Recommendations
For Direct Replacement (600 V, 1 A Applications):
Parts MRA4005T1G, MRA4005T3G, CGRA4005-G, CMR1-06M BK PBFREE, and CMR1-06M TR13 PBFREE provide electrical equivalence to the GF1J with 600 V reverse voltage and 1 A current rating. Among these, RS1J (Taiwan Semiconductor Corporation) and ES1J-LTP (Micro Commercial Co) are classified as Active products, offering superior long-term availability and supply chain stability compared to the GF1J's "Not For New Designs" status.
RS1J offers fast recovery characteristics (250 ns) and maintains reverse leakage current at 5 µA, matching the GF1J's leakage specification. ES1J-LTP provides the widest operating temperature range (-65°C to 175°C), matching the GF1J exactly, with fast recovery performance (35 ns) and equivalent reverse leakage.
CMR1-06M variants (both BK PBFREE and TR13 PBFREE) from Central Semiconductor Corp are Active products with extended lower temperature rating (-65°C), matching the GF1J's minimum junction temperature. These parts maintain 5 µA reverse leakage current and standard recovery speed.
For Higher Voltage Applications:
MRA4007T3G (1000 V, 1 A) is suitable when circuit design requires enhanced voltage margin beyond the 600 V specification. This part maintains 1 A current rating and standard recovery speed.
For Lower Voltage Applications:
MRA4004T3G (400 V, 1 A) is applicable only to circuits where maximum operating voltage does not exceed 400 V. This part is not suitable as a substitute for 600 V rated applications.
Automotive Applications:
NRVA4005T3G is qualified to AEC-Q101 automotive standard and is suitable for automotive-grade applications requiring 600 V, 1 A performance. Operating temperature range is -55°C to 150°C.
Frequently Asked Questions (FAQ)
Q: Can MRA4004T3G replace GF1J in a 600 V circuit?
A: No. MRA4004T3G is rated for 400 V maximum reverse voltage, which is insufficient for 600 V applications. Using this part in a 600 V circuit will result in diode failure. MRA4004T3G is suitable only for applications where circuit voltage does not exceed 400 V.
Q: What is the difference between MRA4005T1G and MRA4005T3G?
A: Both parts are electrically identical with 600 V reverse voltage and 1 A current rating. The difference is packaging: MRA4005T1G is supplied in Tape & Reel (TR), while MRA4005T3G is supplied in Cut Tape (CT) & Digi-Reel®. Selection depends on procurement and assembly requirements.
Q: Is RS1J a suitable replacement for GF1J?
A: Yes. RS1J meets all electrical requirements: 600 V reverse voltage, 1 A current rating, and DO-214AC (SMA) package. RS1J is an Active product with superior availability. The primary difference is faster recovery time (250 ns versus 2 µs for GF1J), which is advantageous in most applications. Operating temperature range is -55°C to 150°C, which is narrower than GF1J's -65°C to 175°C.
Q: Can I use ES1J-LTP as a direct substitute for GF1J?
A: Yes. ES1J-LTP provides 600 V reverse voltage, 1 A current rating, and DO-214AC (SMA) package. It is an Active product with the same operating temperature range as GF1J (-65°C to 175°C). Forward voltage is higher (1.7 V versus 1.0 V), and recovery time is significantly faster (35 ns), which may affect circuit performance in some applications. Verify forward voltage drop compatibility in your specific circuit.
Q: What is the advantage of MRA4007T3G over GF1J?
A: MRA4007T3G provides 1000 V reverse voltage rating compared to GF1J's 600 V. This higher voltage rating offers greater safety margin in circuits subject to voltage transients or overvoltage conditions. Current rating remains 1 A. Use MRA4007T3G when circuit design requires enhanced voltage protection.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant, matching the GF1J's environmental compliance status.
Q: Which substitute part has the best long-term availability?
A: RS1J and ES1J-LTP are classified as Active products, indicating ongoing manufacturing and supply. All other substitutes, including the GF1J, are classified as "Not For New Designs," indicating limited future availability. For new designs or long-term supply assurance, RS1J or ES1J-LTP are recommended.
Q: Can I use NRVA4005T3G in non-automotive applications?
A: Yes. NRVA4005T3G is qualified to AEC-Q101 automotive standard but can be used in non-automotive applications. It provides 600 V reverse voltage and 1 A current rating in DO-214AC (SMA) package. Operating temperature range is -55°C to 150°C.
Q: What is the difference between CMR1-06M BK PBFREE and CMR1-06M TR13 PBFREE?
A: Both parts are electrically identical with 600 V reverse voltage and 1 A current rating. The difference is packaging: CMR1-06M BK PBFREE is supplied in Bulk, while CMR1-06M TR13 PBFREE is supplied in Tape & Reel (TR). Selection depends on procurement and assembly requirements.
Q: Does forward voltage difference affect circuit performance?
A: Yes. Forward voltage affects power dissipation and voltage drop across the diode. GF1J has 1.0 V forward voltage, while most substitutes range from 1.1 V to 1.7 V. Higher forward voltage increases power loss and heat generation. In circuits sensitive to voltage drop, such as low-voltage rectification stages, verify that the substitute part's forward voltage is acceptable for your application.
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