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EL357NE-VG Equivalent & Substitute Parts
Part Overview
The EL357NE-VG is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 3750Vrms isolation voltage in a single-channel configuration with 4-SOP surface mount packaging. The device is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).
Substitute parts are identified based on matching critical electrical parameters: 3750Vrms isolation voltage, transistor output type, single-channel configuration, DC input, 80V maximum output voltage, and surface mount gull wing package geometry. Substitutes must maintain compatibility with the specified operating temperature range and forward voltage characteristics.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | EL357NE-VG |
| Manufacturer | Everlight Electronics Co Ltd |
| Category | Optoisolators |
| Number of Channels | 1 |
| Voltage - Isolation | 3750Vrms |
| Output Type | Transistor |
| Input Type | DC |
| Voltage - Output (Max) | 80V |
| Current - Output / Channel | 50mA |
| Current Transfer Ratio (Min) | 100% @ 5mA |
| Current Transfer Ratio (Max) | 200% @ 5mA |
| Voltage - Forward (Vf) (Typ) | 1.2V |
| Vce Saturation (Max) | 200mV |
| Operating Temperature | -55°C ~ 110°C |
| Mounting Type | Surface Mount |
| Package / Case | 4-SMD, Gull Wing |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the EL357NE-VG are grouped based on strict adherence to the following critical parameters:
Primary Matching Criteria:
- Voltage - Isolation: 3750Vrms (mandatory)
- Number of Channels: 1 (mandatory)
- Output Type: Transistor (mandatory)
- Input Type: DC (mandatory)
- Voltage - Output (Max): 80V (mandatory)
- Package / Case: 4-SMD, Gull Wing (mandatory)
- Mounting Type: Surface Mount (mandatory)
Secondary Compatibility Parameters:
- Current Transfer Ratio ranges (may vary within acceptable bounds)
- Current - Output / Channel (50mA minimum for EL357NE-VG; substitutes may support 80mA)
- Voltage - Forward (Vf): 1.2V to 1.3V acceptable range
- Vce Saturation (Max): 200mV to 400mV acceptable range
- Operating Temperature: -55°C to 110°C (EL357NE-VG); substitutes may have -40°C to 110°C
- RoHS Status: ROHS3 Compliant (required)
- Moisture Sensitivity Level: MSL 1 (required)
All identified substitutes meet these criteria and are classified as Active product status with appropriate regulatory compliance.
Parameter Comparison
| Parameter | EL357NE-VG | FODM121 | FODM121AR2 | FODM121B | FODM121C | FODM121CR2 | FODM121R2 | FODM124R2 | HCPL-181-000E | HCPL-181-00AE | HCPL-181-00BE |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Everlight | onsemi | onsemi | onsemi | onsemi | onsemi | onsemi | onsemi | Broadcom | Broadcom | Broadcom |
| Voltage - Isolation | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Type | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor |
| Input Type | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC | DC |
| Voltage - Output (Max) | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V | 80V |
| Current - Output / Channel | 50mA | 80mA | 80mA | 80mA | 80mA | 80mA | 80mA | 80mA | 50mA | 50mA | 50mA |
| Current Transfer Ratio (Min) | 100% @ 5mA | 50% @ 5mA | 100% @ 5mA | 50% @ 5mA | 100% @ 5mA | 100% @ 5mA | 50% @ 5mA | 100% @ 1mA | 50% @ 5mA | 80% @ 5mA | 130% @ 5mA |
| Current Transfer Ratio (Max) | 200% @ 5mA | 600% @ 5mA | 300% @ 5mA | 150% @ 5mA | 200% @ 5mA | 200% @ 5mA | 600% @ 5mA | 1200% @ 1mA | 600% @ 5mA | 160% @ 5mA | 260% @ 5mA |
| Voltage - Forward (Vf) (Typ) | 1.2V | 1.3V (Max) | 1.3V (Max) | 1.3V (Max) | 1.3V (Max) | 1.3V (Max) | 1.3V (Max) | 1.3V (Max) | 1.2V | 1.2V | 1.2V |
| Vce Saturation (Max) | 200mV | 400mV | 400mV | 400mV | 400mV | 400mV | 400mV | 400mV | 200mV | 200mV | 200mV |
| Rise / Fall Time (Typ) | 3µs, 4µs | 3µs, 3µs | 3µs, 3µs | 3µs, 3µs | 3µs, 3µs | 3µs, 3µs | 3µs, 3µs | 3µs, 3µs | 4µs, 3µs | 4µs, 3µs | 4µs, 3µs |
| Operating Temperature | -55°C ~ 110°C | -40°C ~ 110°C | -40°C ~ 110°C | -40°C ~ 110°C | -40°C ~ 110°C | -40°C ~ 110°C | -40°C ~ 110°C | -40°C ~ 110°C | -55°C ~ 100°C | -55°C ~ 100°C | -55°C ~ 100°C |
| Package / Case | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SMD, Gull Wing | 4-SOIC (0.209", 5.30mm Width) | 4-SMD, Gull Wing | 4-SMD, Gull Wing |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the EL357NE-VG. Selection among substitutes depends on specific application requirements within the following categories:
onsemi FODM121 Series Substitutes: The FODM121, FODM121AR2, FODM121B, FODM121C, FODM121CR2, FODM121R2, and FODM124R2 variants provide 3750Vrms isolation with transistor output in 4-SMD gull wing packages. These components support higher output current (80mA) compared to the EL357NE-VG (50mA). Operating temperature range is -40°C to 110°C. Current transfer ratio specifications vary across variants: FODM121 and FODM121R2 offer 50-600% @ 5mA; FODM121AR2 offers 100-300% @ 5mA; FODM121B offers 50-150% @ 5mA; FODM121C and FODM121CR2 offer 100-200% @ 5mA; FODM124R2 offers 100-1200% @ 1mA. Vce saturation is 400mV maximum across all FODM121 variants. Packaging options include Tube, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel®.
Broadcom HCPL-181 Series Substitutes: The HCPL-181-000E, HCPL-181-00AE, and HCPL-181-00BE variants provide 3750Vrms isolation with transistor output. Output current is 50mA, matching the EL357NE-VG. Operating temperature range is -55°C to 100°C. Current transfer ratio specifications vary: HCPL-181-000E offers 50-600% @ 5mA; HCPL-181-00AE offers 80-160% @ 5mA; HCPL-181-00BE offers 130-260% @ 5mA. Vce saturation is 200mV maximum, matching the EL357NE-VG. HCPL-181-000E uses 4-SOIC package; HCPL-181-00AE and HCPL-181-00BE use 4-Mini-Flat packages. Forward voltage is 1.2V, matching the EL357NE-VG specification.
Package Considerations: The EL357NE-VG uses 4-SOP (2.54mm) packaging. onsemi FODM121 variants use 4-SMD gull wing packages. Broadcom HCPL-181-000E uses 4-SOIC (0.209", 5.30mm Width); HCPL-181-00AE and HCPL-181-00BE use 4-Mini-Flat packages. Physical package differences require PCB layout verification before substitution.
Frequently Asked Questions (FAQ)
Q1: What are the critical parameters that determine if a part can substitute for the EL357NE-VG?
A: The following parameters must match exactly: 3750Vrms isolation voltage, single-channel configuration, transistor output type, DC input type, 80V maximum output voltage, and 4-SMD gull wing surface mount package. All identified substitutes meet these criteria.
Q2: Can FODM121 series parts with 80mA output current replace the EL357NE-VG rated for 50mA?
A: Yes. The FODM121 variants support higher output current (80mA) than the EL357NE-VG (50mA). This provides additional design margin and does not create incompatibility. The application circuit determines actual current draw.
Q3: What is the difference between FODM121 and FODM124R2 in terms of current transfer ratio?
A: FODM121 offers 50-600% current transfer ratio @ 5mA. FODM124R2 offers 100-1200% current transfer ratio @ 1mA. The FODM124R2 specification is measured at lower input current (1mA vs 5mA), resulting in higher transfer ratio values. Both are functionally compatible with the EL357NE-VG.
Q4: Are there operating temperature differences between the EL357NE-VG and substitute parts?
A: The EL357NE-VG operates from -55°C to 110°C. onsemi FODM121 variants operate from -40°C to 110°C, with a narrower low-temperature range. Broadcom HCPL-181 variants operate from -55°C to 100°C, with a narrower high-temperature range. Application temperature requirements must be verified before substitution.
Q5: What packaging options are available for FODM121 substitutes?
A: FODM121 is available in Tube packaging. FODM121AR2 and FODM121R2 are available in Tape & Reel (TR). FODM121B and FODM121C are available in Tube. FODM121CR2 is available in Tape & Reel (TR). FODM124R2 is available in Cut Tape (CT) & Digi-Reel®. Packaging selection depends on assembly process requirements.
Q6: How do Vce saturation specifications differ between the EL357NE-VG and substitutes?
A: The EL357NE-VG has 200mV maximum Vce saturation. onsemi FODM121 variants have 400mV maximum. Broadcom HCPL-181 variants have 200mV maximum. Lower Vce saturation reduces power dissipation in the output transistor. Applications sensitive to saturation voltage must account for this parameter difference.
Q7: Are all substitute parts ROHS3 compliant?
A: Yes. All identified substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the EL357NE-VG regulatory status.
Q8: Can HCPL-181-000E with 4-SOIC package replace the EL357NE-VG in a 4-SOP footprint?
A: No. HCPL-181-000E uses 4-SOIC (0.209", 5.30mm Width) package, which is physically different from the EL357NE-VG 4-SOP (2.54mm) package. PCB footprint modification is required. HCPL-181-00AE and HCPL-181-00BE use 4-Mini-Flat packages, also requiring footprint verification.
Q9: What is the forward voltage difference between the EL357NE-VG and FODM121 variants?
A: The EL357NE-VG has 1.2V typical forward voltage. FODM121 variants specify 1.3V maximum forward voltage. This 0.1V difference is within acceptable operating range for most applications but should be verified in circuits with tight input current specifications.
Q10: Are there inventory considerations when selecting substitutes?
A: Yes. Inventory levels vary significantly: EL357NE-VG has 722 pcs; FODM121CR2 has 66,880 pcs; HCPL-181-00BE has 103,100 pcs. Higher inventory availability may support production scheduling and supply chain continuity.
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