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MCT210M Equivalent & Substitute Parts
Part Overview
The MCT210M is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 7500Vpk isolation rating. This component features a single-channel configuration in a 6-DIP package and is rated for 30mA output current with 150% minimum current transfer ratio at 10mA input.
The MCT210M is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure availability for new production runs or system updates.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | MCT210M |
| Manufacturer | onsemi |
| Category | Optoisolators |
| Number of Channels | 1 |
| Voltage - Isolation | 7500Vpk |
| Current Transfer Ratio (Min) | 150% @ 10mA |
| Output Type | Transistor with Base |
| Voltage - Output (Max) | 30V |
| Current - Output / Channel | 30mA |
| Package / Case | 6-DIP (0.300", 7.62mm) |
| Operating Temperature | -55°C ~ 100°C |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the MCT210M is determined by the following critical parameters:
- Package compatibility: 6-DIP (0.300", 7.62mm) form factor for direct PCB mounting
- Output configuration: Transistor with base output for circuit interface compatibility
- Single-channel design: One isolated channel per package
- Input type: DC input signal compatibility
- Isolation voltage rating: Minimum acceptable isolation voltage for the application
- Output current capability: Minimum 30mA to support existing load requirements
- Current transfer ratio: Minimum 150% @ 10mA for signal integrity
- Operating temperature range: Coverage of -55°C to 100°C or compatible subset
The CNY174M qualifies as a substitute based on matching package, output type, channel count, input type, and mounting method. While the CNY174M features lower isolation voltage (4170Vrms versus 7500Vpk), higher output voltage rating (70V versus 30V), and higher output current capability (50mA versus 30mA), these differences represent enhanced or equivalent performance characteristics for most applications.
Parameter Comparison
| Parameter | MCT210M | CNY174M |
|---|---|---|
| Manufacturer Part Number | MCT210M | CNY174M |
| Manufacturer | onsemi | onsemi |
| Number of Channels | 1 | 1 |
| Voltage - Isolation | 7500Vpk | 4170Vrms |
| Current Transfer Ratio (Min) | 150% @ 10mA | 160% @ 10mA |
| Current Transfer Ratio (Max) | — | 320% @ 10mA |
| Turn On / Turn Off Time (Typ) | 1µs, 50µs | 2µs, 3µs |
| Output Type | Transistor with Base | Transistor with Base |
| Voltage - Output (Max) | 30V | 70V |
| Current - Output / Channel | 30mA | 50mA |
| Voltage - Forward (Vf) (Typ) | 1.33V | 1.35V |
| Vce Saturation (Max) | 400mV | 400mV |
| Package / Case | 6-DIP (0.300", 7.62mm) | 6-DIP (0.300", 7.62mm) |
| Operating Temperature | -55°C ~ 100°C | -40°C ~ 100°C |
| Mounting Type | Through Hole | Through Hole |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The CNY174M is an active product from onsemi and represents the primary substitute for the obsolete MCT210M. Both components share identical package geometry, output configuration, and mounting method, enabling direct PCB replacement without layout modifications.
The CNY174M is ROHS3 compliant, whereas the MCT210M status is not specified. For applications subject to RoHS regulations, the CNY174M provides documented compliance. Both parts carry REACH Unaffected status and EAR99 ECCN classification.
The CNY174M demonstrates superior current transfer ratio performance (160% minimum versus 150% minimum) and provides higher output current capability (50mA versus 30mA) and output voltage rating (70V versus 30V). These characteristics support broader application flexibility.
The operating temperature range of the CNY174M (-40°C to 100°C) covers the upper portion of the MCT210M range (-55°C to 100°C). Applications requiring operation below -40°C require evaluation of alternative solutions.
Frequently Asked Questions (FAQ)
Q: Can the CNY174M directly replace the MCT210M on existing PCBs?
A: Yes. Both components use identical 6-DIP (0.300", 7.62mm) package geometry and through-hole mounting, enabling direct PCB substitution without layout changes.
Q: What is the isolation voltage difference between these parts?
A: The MCT210M provides 7500Vpk isolation, while the CNY174M provides 4170Vrms isolation. Applications requiring the higher isolation rating of the MCT210M must evaluate whether the CNY174M isolation voltage is sufficient for the intended circuit.
Q: Are there differences in switching speed?
A: Yes. The MCT210M specifies 1µs turn-on and 50µs turn-off time. The CNY174M specifies 2µs turn-on and 3µs turn-off time. The CNY174M exhibits faster turn-off performance, which may affect circuit timing in applications sensitive to switching delays.
Q: Does the CNY174M support the full operating temperature range of the MCT210M?
A: No. The CNY174M operates from -40°C to 100°C, while the MCT210M operates from -55°C to 100°C. Applications requiring operation below -40°C must verify alternative solutions.
Q: What compliance certifications apply to the CNY174M?
A: The CNY174M is ROHS3 compliant and carries REACH Unaffected status. The MCT210M ROHS status is not specified in available documentation.
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