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EL1019(TA)-VG Equivalent & Substitute Parts
Part Overview
The EL1019(TA)-VG is a 5000Vrms optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component operates as a single-channel galvanic isolation device in a 4-SOP surface mount package. The part is Active status and ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).
Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across isolation voltage, output type, package configuration, and operating temperature range. Alternative models become necessary due to inventory availability, supply chain optimization, or specific current transfer ratio requirements within acceptable design margins.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Isolation Voltage | 5000 | Vrms |
| Number of Channels | 1 | — |
| Output Type | Transistor | — |
| Package Type | 4-SOP (2.54mm) | — |
| Mounting Type | Surface Mount | — |
| Maximum Output Voltage | 80 | V |
| Maximum Output Current | 50 | mA |
| Operating Temperature Range | -55 to 110 | °C |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution eligibility for the EL1019(TA)-VG is determined by the following mandatory criteria:
Electrical Compatibility Requirements:
- Isolation voltage: 5000Vrms (exact match required)
- Output type: Transistor (exact match required)
- Number of channels: 1 (exact match required)
- Maximum output voltage: ≥70V minimum
- Maximum output current: ≥50mA
- Input type: DC (exact match required)
Mechanical Compatibility Requirements:
- Package type: 4-SOP or 4-SMD, Gull Wing configuration
- Mounting type: Surface Mount
- Operating temperature range: Must encompass or match -55°C to 110°C
Compliance Requirements:
- RoHS3 compliant
- MSL rating: 1 (Unlimited)
Current Transfer Ratio (CTR) Considerations: Substitute parts are grouped by CTR specifications at measurement conditions (5mA or 10mA). Parts with overlapping or adjacent CTR ranges are functionally equivalent within design tolerance. The EL1019(TA)-VG specifies 200% to 400% CTR @ 5mA, establishing the reference performance band.
All identified substitutes maintain 5000Vrms isolation, single-channel transistor output, 4-SOP package configuration, and surface mount capability. Variations in turn-on/turn-off timing and rise/fall times are within acceptable switching performance margins for optoisolator applications.
Parameter Comparison
| Part Number | Manufacturer | Isolation Voltage (Vrms) | CTR Min @ Condition (%) | CTR Max @ Condition (%) | Output Voltage Max (V) | Output Current (mA) | Operating Temp (°C) | Package | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|
| EL1019(TA)-VG | Everlight Electronics | 5000 | 200 @ 5mA | 400 @ 5mA | 80 | 50 | -55 to 110 | 4-SOP | Tape & Reel |
| TCLT1000 | Vishay Semiconductor Opto | 5000 | 50 @ 5mA | 600 @ 5mA | 70 | 50 | -55 to 100 | 4-SOP | Tape & Reel |
| TCLT1002 | Vishay Semiconductor Opto | 5000 | 63 @ 10mA | 125 @ 10mA | 70 | 50 | -55 to 100 | 4-SOP | Cut Tape & Digi-Reel |
| TCLT1003 | Vishay Semiconductor Opto | 5000 | 100 @ 10mA | 200 @ 10mA | 70 | 50 | -55 to 100 | 4-SOP | Cut Tape & Digi-Reel |
| TCLT1005 | Vishay Semiconductor Opto | 5000 | 50 @ 5mA | 150 @ 5mA | 70 | 50 | -55 to 100 | 4-SOP | Tape & Reel |
| TCLT1006 | Vishay Semiconductor Opto | 5000 | 100 @ 5mA | 300 @ 5mA | 70 | 50 | -55 to 100 | 4-SOP | Tape & Reel |
| TCLT1007 | Vishay Semiconductor Opto | 5000 | 80 @ 5mA | 160 @ 5mA | 70 | 50 | -55 to 100 | 4-SOP | Tape & Reel |
| TCLT1008 | Vishay Semiconductor Opto | 5000 | 130 @ 5mA | 260 @ 5mA | 70 | 50 | -55 to 100 | 4-SOP | Tape & Reel |
| TCLT1009 | Vishay Semiconductor Opto | 5000 | 200 @ 5mA | 400 @ 5mA | 70 | 50 | -55 to 100 | 4-SOP | Cut Tape & Digi-Reel |
| VOL617A-1X001T | Vishay Semiconductor Opto | 5000 | 40 @ 5mA | 80 @ 5mA | 80 | 50 | -55 to 110 | 4-SOP | Tape & Reel |
| VOL617A-2X001T | Vishay Semiconductor Opto | 5000 | 63 @ 5mA | 125 @ 5mA | 80 | 50 | -55 to 110 | 4-SOP | Tape & Reel |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
TCLT1009 and TCLT1006 are the closest functional equivalents to the EL1019(TA)-VG. TCLT1009 matches the exact CTR specification (200% to 400% @ 5mA) and maintains the full operating temperature range (-55°C to 110°C when considering the EL1019 specification). TCLT1006 provides 100% to 300% CTR @ 5mA, which overlaps the EL1019 performance band. Both are ROHS3 compliant with MSL 1 rating and active product status.
Secondary Substitutes (Acceptable with Design Verification):
TCLT1008 (130% to 260% CTR @ 5mA) and TCLT1000 (50% to 600% CTR @ 5mA) are functionally compatible but operate at reduced maximum temperature (-55°C to 100°C). These parts are suitable for applications not requiring the full 110°C upper limit. TCLT1008 provides narrower CTR tolerance closer to the EL1019 specification.
Alternative Options (Different CTR Bands):
TCLT1002, TCLT1003, TCLT1005, and TCLT1007 operate at different CTR specifications measured at 10mA or with different percentage ranges. These parts are electrically compatible but require circuit design adjustment for input current conditions. All maintain 5000Vrms isolation and 4-SOP package compatibility.
VOL617 Series Consideration:
VOL617A-1X001T and VOL617A-2X001T maintain the full -55°C to 110°C operating range and 80V maximum output voltage matching the EL1019(TA)-VG. However, CTR specifications are lower (40% to 80% and 63% to 125% respectively), requiring design verification for input drive current compatibility.
Packaging and Inventory:
All substitutes are available in surface mount 4-SOP configuration. Tape & Reel packaging is standard for production volumes. Cut Tape & Digi-Reel options (TCLT1002, TCLT1003, TCLT1009) are available for lower-volume requirements.
Frequently Asked Questions (FAQ)
Q: Can TCLT1009 be used as a direct replacement for EL1019(TA)-VG?
A: TCLT1009 is electrically compatible with matching 200% to 400% CTR @ 5mA specification and 5000Vrms isolation. Both are ROHS3 compliant with MSL 1 rating. The primary difference is operating temperature range: TCLT1009 operates -55°C to 100°C versus EL1019(TA)-VG at -55°C to 110°C. Direct substitution is valid for applications within the -55°C to 100°C window.
Q: What is the significance of CTR (Current Transfer Ratio) measurement conditions?
A: CTR is measured at specific input LED current levels (5mA or 10mA). The EL1019(TA)-VG specifies CTR @ 5mA, while some Vishay TCLT parts specify CTR @ 10mA. Parts measured at different conditions have different CTR values. When selecting substitutes, verify that the measurement condition matches your circuit's input current design point.
Q: Are TCLT1006 and TCLT1008 interchangeable?
A: Both parts maintain 5000Vrms isolation, single-channel transistor output, and 4-SOP package. TCLT1006 specifies 100% to 300% CTR @ 5mA, while TCLT1008 specifies 130% to 260% CTR @ 5mA. The CTR ranges overlap, making them functionally compatible. Selection depends on whether your circuit requires the lower CTR floor (100%) of TCLT1006 or the higher minimum (130%) of TCLT1008.
Q: Why do some substitutes have lower maximum output voltage (70V vs 80V)?
A: The EL1019(TA)-VG and VOL617 series support 80V maximum output voltage. Most TCLT series parts are rated 70V maximum. This difference is not a functional limitation for typical 5kV isolation applications but should be verified if your circuit operates near the 70V threshold.
Q: Can I use TCLT1000 with its 50% to 600% CTR range?
A: TCLT1000 is electrically compatible with 5000Vrms isolation and 4-SOP package. However, the extremely wide CTR range (50% to 600%) indicates loose manufacturing tolerance. This part is suitable only if your circuit design accommodates the full CTR variation without performance degradation. The EL1019(TA)-VG and TCLT1009 offer tighter CTR control (200% to 400%).
Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?
A: Both are surface mount compatible formats. Tape & Reel is standard for high-volume automated assembly. Cut Tape & Digi-Reel provides flexibility for lower volumes or mixed component orders. Electrical performance is identical; packaging choice depends on production volume and assembly equipment compatibility.
Q: Is the VOL617A series a suitable substitute?
A: VOL617A-1X001T and VOL617A-2X001T maintain 5000Vrms isolation, 80V maximum output voltage, and -55°C to 110°C operating range matching the EL1019(TA)-VG. However, CTR specifications are significantly lower (40% to 80% and 63% to 125%). These parts are suitable only if your circuit design accommodates lower CTR values or if higher input LED current is available.
Q: Are all substitutes ROHS3 compliant?
A: All listed substitutes are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the EL1019(TA)-VG compliance profile. This ensures environmental and regulatory compatibility across all identified alternatives.
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