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ES1LJ Equivalent & Substitute Parts
Part Overview
The ES1LJ is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, 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 identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. The ES1LJ operates across a junction temperature range of -55°C to 150°C and demonstrates fast recovery characteristics with a reverse recovery time of 35 nanoseconds.
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 | 1.7 @ 1 A | V |
| Reverse Recovery Time (trr) | 35 | ns |
| Current - Reverse Leakage @ Vr | 5 @ 600 V | µA |
| Operating Temperature - Junction | -55 to 150 | °C |
| Package / Case | DO-214AC, SMA | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the ES1LJ is determined by strict equivalence across the following critical parameters: maximum DC reverse voltage (600 V), average rectified current (1 A), forward voltage drop (1.7 V @ 1 A), reverse recovery time (35 ns or faster), reverse leakage current (5 µA @ 600 V), and surface mount DO-214AC (SMA) package configuration. Parts are grouped into three categories based on their relationship to the ES1LJ:
Parametric Equivalents maintain all critical electrical specifications and package requirements, differing only in manufacturer, product status, or minor non-critical parameters such as junction capacitance or temperature range extensions.
Direct Manufacturers are alternative part numbers from the same or different manufacturers that meet all ES1LJ specifications without deviation.
Similar Parts share the same voltage and current ratings, package type, and mounting configuration but may exhibit variations in forward voltage, reverse recovery time, or junction capacitance that remain within acceptable operating margins for general-purpose rectification applications.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Vr (Max) [V] | Io [A] | Vf (Max) @ If [V] | trr [ns] | Ir @ Vr [µA] | Package | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| ES1LJ | Taiwan Semiconductor Corporation | 600 | 1 | 1.7 @ 1 A | 35 | 5 @ 600 V | DO-214AC (SMA) | Obsolete | ROHS3 Compliant |
| ES1J | HY Electronic (Cayman) Limited | 600 | 1 | 1.7 @ 1 A | 35 | 5 @ 600 V | DO-214AC (SMA) | Active | RoHS Compliant |
| ES1JH | Taiwan Semiconductor Corporation | 600 | 1 | 1.7 @ 1 A | 35 | 5 @ 600 V | DO-214AC (SMA) | Active | ROHS3 Compliant |
| HS1J | Good-Ark Semiconductor | 600 | 1 | 1.7 @ 1 A | 75 | 5 @ 600 V | DO-214AC (SMA) | Active | ROHS3 Compliant |
| US1J | SMC Diode Solutions | 600 | 1 | 1.7 @ 1 A | 75 | 5 @ 600 V | DO-214AC (SMA) | Active | Not Specified |
| US1J R3G | Taiwan Semiconductor Corporation | 600 | 1 | 1.7 @ 1 A | 75 | 5 @ 600 V | DO-214AC (SMA) | Discontinued at DiGi Electronics | ROHS3 Compliant |
| US1JH | Taiwan Semiconductor Corporation | 600 | 1 | 1.7 @ 1 A | 75 | 5 @ 600 V | DO-214AC (SMA) | Active | ROHS3 Compliant |
| ES1J-LTP | Micro Commercial Co | 600 | 1 | 1.7 @ 1 A | 35 | 5 @ 600 V | DO-214AC (SMA) | Active | ROHS3 Compliant |
| CGRA4005-G | Comchip Technology | 600 | 1 | 1.1 @ 1 A | Not Specified | 5 @ 600 V | DO-214AC (SMA) | Active | ROHS3 Compliant |
| CSFA105-G | Comchip Technology | 600 | 1 | 1.5 @ 1 A | 35 | 5 @ 600 V | DO-214AC (SMA) | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Parametric Equivalents with Active Status)
ES1J (HY Electronic) and ES1JH (Taiwan Semiconductor Corporation) are direct parametric equivalents to the ES1LJ, maintaining identical electrical specifications including 35 nanosecond reverse recovery time and 1.7 V forward voltage. ES1JH carries automotive-grade qualification (AEC-Q101) and is actively produced, making it the preferred choice for new designs requiring long-term availability. ES1J is also actively produced with high inventory levels (175,400 pieces), providing supply security.
ES1J-LTP (Micro Commercial Co) is a direct manufacturer equivalent with identical electrical performance and extended operating temperature range (-65°C to 175°C versus -55°C to 150°C), offering enhanced thermal margin for applications requiring wider temperature operation.
Secondary Substitutes (Parametric Equivalents with Longer Recovery Time)
HS1J (Good-Ark Semiconductor) and US1J (SMC Diode Solutions) maintain all voltage and current ratings but exhibit 75 nanosecond reverse recovery time, compared to the ES1LJ's 35 nanoseconds. These parts are suitable for applications where switching speed is not performance-critical. US1JH (Taiwan Semiconductor Corporation) provides automotive-grade qualification with the same 75 nanosecond recovery time and active production status.
Similar Parts (Modified Forward Voltage)
CGRA4005-G (Comchip Technology) exhibits reduced forward voltage of 1.1 V @ 1 A compared to the ES1LJ's 1.7 V, resulting in lower power dissipation. This characteristic is beneficial for efficiency-sensitive applications but requires verification that the lower forward voltage does not conflict with circuit design assumptions.
CSFA105-G (Comchip Technology) provides intermediate forward voltage of 1.5 V @ 1 A with matching 35 nanosecond recovery time, offering a compromise between the ES1LJ and CGRA4005-G specifications.
All recommended substitutes maintain ROHS3 compliance, surface mount DO-214AC (SMA) package configuration, and -55°C to 150°C minimum operating temperature range (or extended range for ES1J-LTP).
Frequently Asked Questions (FAQ)
Q: Can ES1J be used as a direct replacement for ES1LJ?
A: Yes. ES1J maintains identical electrical specifications: 600 V reverse voltage, 1 A average rectified current, 1.7 V forward voltage @ 1 A, and 35 nanosecond reverse recovery time. Both use DO-214AC (SMA) surface mount packaging. ES1J is actively produced with substantial inventory availability.
Q: What is the difference between ES1JH and ES1J?
A: ES1JH is manufactured by Taiwan Semiconductor Corporation with automotive-grade qualification (AEC-Q101), while ES1J is manufactured by HY Electronic. Both maintain identical electrical specifications. ES1JH is preferred for automotive and mission-critical applications requiring formal qualification documentation.
Q: Why do some substitutes show 75 nanosecond recovery time instead of 35 nanoseconds?
A: HS1J, US1J, US1J R3G, and US1JH exhibit 75 nanosecond reverse recovery time, which is slower than the ES1LJ's 35 nanoseconds. These parts remain suitable for general-purpose rectification where switching speed is not performance-limiting. Applications requiring fast switching or high-frequency operation should use ES1J, ES1JH, ES1J-LTP, CSFA105-G, or CGRA4005-G.
Q: Is ES1J-LTP suitable for high-temperature applications?
A: Yes. ES1J-LTP operates across -65°C to 175°C junction temperature range, compared to the ES1LJ's -55°C to 150°C. This extended range provides additional thermal margin for applications operating in elevated ambient conditions or with high power dissipation.
Q: What is the advantage of CGRA4005-G?
A: CGRA4005-G exhibits 1.1 V forward voltage @ 1 A, compared to the ES1LJ's 1.7 V. This lower forward voltage reduces power dissipation and heat generation, benefiting efficiency-sensitive applications. However, the lower forward voltage must be verified against circuit design requirements to ensure compatibility with voltage regulation and biasing schemes.
Q: Are all substitute parts RoHS compliant?
A: All recommended substitutes are ROHS3 compliant or RoHS compliant, meeting environmental and hazardous substance restrictions. ES1J carries RoHS compliance status; all others carry ROHS3 compliance status.
Q: Can ES2J-LTP be used as a substitute?
A: No. ES2J-LTP is rated for 2 A average rectified current, compared to the ES1LJ's 1 A rating. While it shares the same 600 V reverse voltage and DO-214AC package, the higher current rating makes it unsuitable as a direct replacement. Use only 1 A rated parts for ES1LJ substitution.
Q: What packaging options are available for substitutes?
A: All recommended substitutes use surface mount DO-214AC (SMA) package configuration, matching the ES1LJ. Packaging variations (Tape & Reel, Cut Tape, Digi-Reel) represent different supply formats for the same physical package and do not affect electrical compatibility or board-level integration.
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