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TCET1202 Equivalent & Substitute Parts
Part Overview
The TCET1202 is an optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This component provides galvanic isolation up to 5000Vrms with a single channel configuration in a 4-DIP package. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter ranges for this optoisolator category.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Isolation | 5000Vrms |
| Number of Channels | 1 |
| Current Transfer Ratio (Min) | 63% @ 10mA |
| Current Transfer Ratio (Max) | 125% @ 10mA |
| Voltage - Output (Max) | 70V |
| Current - Output / Channel | 50mA |
| Vce Saturation (Max) | 300mV |
| Operating Temperature Range | -40°C ~ 100°C |
| Package / Case | 4-DIP (0.300", 7.62mm) |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the TCET1202 is determined by the following critical parameters:
- Voltage isolation rating of 5000Vrms minimum
- Single channel configuration
- Transistor output type
- 4-DIP through-hole package format
- Maximum output voltage of 70V or greater
- Output current capability of 50mA or greater per channel
- Active product status with current manufacturing support
- RoHS3 compliance certification
The HCPL-817-06LE meets these substitution criteria. Both devices share identical isolation voltage, channel count, output type, package format, and compliance certifications. Variations in current transfer ratio test conditions and operating temperature range represent acceptable parameter differences within the optoisolator category.
Parameter Comparison
| Parameter | TCET1202 (Vishay) | HCPL-817-06LE (Broadcom) |
|---|---|---|
| Manufacturer | Vishay Semiconductor Opto Division | Broadcom Limited |
| Voltage - Isolation | 5000Vrms | 5000Vrms |
| Number of Channels | 1 | 1 |
| Current Transfer Ratio (Min) | 63% @ 10mA | 50% @ 5mA |
| Current Transfer Ratio (Max) | 125% @ 10mA | 100% @ 5mA |
| Voltage - Output (Max) | 70V | 70V |
| Current - Output / Channel | 50mA | 50mA |
| Vce Saturation (Max) | 300mV | 200mV |
| Operating Temperature Range | -40°C ~ 100°C | -30°C ~ 100°C |
| Package / Case | 4-DIP (0.300", 7.62mm) | 4-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole | Through Hole |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the TCET1202 and HCPL-817-06LE are Active products with current manufacturing support and full RoHS3 compliance. Selection between these optoisolators should be based on application-specific requirements within the provided parameter ranges.
The TCET1202 operates across a wider temperature range (-40°C to 100°C) compared to the HCPL-817-06LE (-30°C to 100°C). Applications requiring operation below -30°C necessitate the TCET1202.
The HCPL-817-06LE provides lower Vce saturation (200mV maximum versus 300mV), which may reduce power dissipation in output switching applications. Both devices maintain identical isolation voltage, output voltage rating, and output current capability.
Inventory availability differs between manufacturers. Selection may be influenced by supply chain requirements and lead time considerations.
Frequently Asked Questions (FAQ)
Q: Can the HCPL-817-06LE directly replace the TCET1202 in all applications?
A: Direct replacement is possible when operating temperature requirements do not exceed -30°C minimum. Applications requiring operation below -30°C require the TCET1202. Both devices share identical 4-DIP package dimensions, isolation voltage, and output specifications.
Q: What is the significance of the different current transfer ratio test conditions?
A: The TCET1202 specifies current transfer ratio at 10mA input current, while the HCPL-817-06LE specifies at 5mA. These represent different measurement conditions within the optoisolator category. Application circuits must verify that actual operating conditions fall within the specified ranges for the selected device.
Q: Are there package compatibility concerns?
A: Both devices use identical 4-DIP through-hole packaging (0.300", 7.62mm). PCB footprints and mounting procedures are compatible without modification.
Q: Do both parts meet regulatory compliance requirements?
A: Both the TCET1202 and HCPL-817-06LE are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Compliance certifications are equivalent for both devices.
Q: What is the practical difference in Vce saturation between these devices?
A: The HCPL-817-06LE maximum Vce saturation of 200mV is lower than the TCET1202 maximum of 300mV. In output switching applications, this difference affects power dissipation in the transistor output stage. Circuit design must account for the specific saturation characteristics of the selected device.
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