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MCT2200W Optoisolator Equivalent & Substitute Parts
Part Overview
The MCT2200W is an optoisolator transistor with base output manufactured by onsemi, rated for 5300Vrms isolation voltage in a 6-DIP package. This component provides galvanic isolation for single-channel DC input applications with transistor output capability. The MCT2200W is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility across isolation voltage, output type, channel configuration, and package form factor while meeting current availability and compliance standards.
Substiute Parts
Key Parameters
| Parameter | MCT2200W |
|---|---|
| Manufacturer | onsemi |
| Product Status | Obsolete |
| Number of Channels | 1 |
| Voltage - Isolation | 5300Vrms |
| Output Type | Transistor with Base |
| Voltage - Output (Max) | 30V |
| Current - Output / Channel | 50mA |
| Current Transfer Ratio (Min) | 20% @ 10mA |
| Vce Saturation (Max) | 400mV |
| Operating Temperature | -55°C ~ 100°C |
| Package / Case | 6-DIP (0.400", 10.16mm) |
| Mounting Type | Through Hole |
| Input Type | DC |
Substitute Part Grouping Explanation
Substitution for the MCT2200W is determined by the following critical parameters:
Primary Compatibility Criteria:
- Single channel configuration (Number of Channels = 1)
- Transistor with base output type
- DC input type
- Through hole mounting in 6-DIP package
- Operating temperature range of -55°C to 100°C minimum
Secondary Compatibility Criteria:
- Isolation voltage rating of 5000Vrms or higher (MCT2200W = 5300Vrms)
- Output voltage capability of 30V or higher
- Output current of 50mA or higher per channel
- Current transfer ratio minimum of 20% @ 10mA
- Vce saturation of 500mV or lower
Substitute parts are grouped into two categories based on isolation voltage performance:
Group A - High Isolation (5000Vrms+): Parts meeting or exceeding the MCT2200W isolation specification, suitable for direct replacement in applications requiring maximum isolation protection.
Group B - Reduced Isolation (2500Vrms): Parts with lower isolation ratings, suitable only for applications where 2500Vrms isolation is sufficient and cost optimization is prioritized.
Parameter Comparison
| Part Number | Manufacturer | Isolation Voltage | Output Type | Voltage - Output (Max) | Current - Output | Vce Saturation (Max) | Package / Case | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| MCT2200W | onsemi | 5300Vrms | Transistor with Base | 30V | 50mA | 400mV | 6-DIP (0.400", 10.16mm) | Obsolete | N/A |
| 4N25 | Texas Instruments | 5000Vrms | Transistor with Base | 70V | 50mA | 500mV | 6-DIP (0.300", 7.62mm) | Active | RoHS non-compliant |
| 4N25-V | Everlight Electronics Co Ltd | 5000Vrms | Transistor with Base | 80V | N/A | 500mV | 6-DIP (0.300", 7.62mm) | Active | ROHS3 Compliant |
| 4N25-X000 | Vishay Semiconductor Opto Division | 5000Vrms | Transistor with Base | 70V | 50mA | 500mV | 6-DIP (0.300", 7.62mm) | Active | ROHS3 Compliant |
| 4N25-X001 | Vishay Semiconductor Opto Division | 5000Vrms | Transistor with Base | 70V | 50mA | 500mV | 6-DIP (0.300", 7.62mm) | Active | ROHS3 Compliant |
| 4N25-000E | Broadcom Limited | 2500Vrms | Transistor with Base | 30V | 100mA | 500mV | 6-DIP (0.300", 7.62mm) | Active | ROHS3 Compliant |
| 4N25-060E | Broadcom Limited | 2500Vrms | Transistor with Base | 30V | 100mA | 500mV | 6-DIP (0.300", 7.62mm) | Active | ROHS3 Compliant |
| 4N25-W00E | Broadcom Limited | 2500Vrms | Transistor with Base | 30V | 100mA | 500mV | 6-DIP (0.400", 10.16mm) | Active | ROHS3 Compliant |
| 4N25-W60E | Broadcom Limited | 2500Vrms | Transistor with Base | 30V | 100mA | 500mV | 6-DIP (0.400", 10.16mm) | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Replacement (High Isolation Requirement):
The 4N25-X000 and 4N25-X001 from Vishay Semiconductor Opto Division are the primary substitutes for MCT2200W applications. Both parts maintain 5000Vrms isolation voltage, matching the MCT2200W isolation class, and are ROHS3 compliant with active product status. These parts provide equivalent electrical performance with improved compliance posture compared to the obsolete MCT2200W.
The 4N25 from Texas Instruments offers 5000Vrms isolation and active status but carries RoHS non-compliant designation, making it suitable only for applications without RoHS requirements.
The 4N25-V from Everlight Electronics provides 5000Vrms isolation and ROHS3 compliance with active status. Output current specification is not provided in the datasheet parameters.
For Cost-Optimized Applications (Reduced Isolation Acceptable):
The 4N25-000E, 4N25-060E, 4N25-W00E, and 4N25-W60E from Broadcom Limited operate at 2500Vrms isolation with ROHS3 compliance and active product status. These parts are suitable only when application isolation requirements do not exceed 2500Vrms. The W-series variants (4N25-W00E, 4N25-W60E) maintain the 0.400" DIP width matching MCT2200W package dimensions, while standard variants use 0.300" width.
Package Consideration:
The MCT2200W uses 6-DIP (0.400", 10.16mm) package. Most substitute parts use 6-DIP (0.300", 7.62mm), requiring PCB layout verification. The 4N25-W00E and 4N25-W60E maintain the 0.400" width for direct footprint compatibility.
Frequently Asked Questions (FAQ)
Q: Can I use a 2500Vrms part as a substitute for the MCT2200W in my application?
A: Only if your application isolation requirement is 2500Vrms or lower. The MCT2200W is rated for 5300Vrms isolation. Using a lower-rated part in a high-voltage isolation application creates safety and reliability risks. Verify your circuit isolation requirements before selecting a reduced-isolation substitute.
Q: What is the difference between 4N25-X000 and 4N25-X001?
A: Both parts are manufactured by Vishay Semiconductor Opto Division with identical electrical specifications and 5000Vrms isolation. The primary difference is packaging: 4N25-X000 is supplied without specified packaging, while 4N25-X001 is supplied in tube packaging. Electrical performance and compatibility are equivalent.
Q: Why do some substitute parts have different package dimensions?
A: The MCT2200W uses 6-DIP (0.400", 10.16mm) width. Most modern optoisolator designs use 6-DIP (0.300", 7.62mm) width. The 4N25-W00E and 4N25-W60E maintain the wider 0.400" package for direct PCB footprint compatibility. Narrower packages require PCB layout modification but are electrically compatible.
Q: Is the MCT2200W still available for purchase?
A: The MCT2200W is classified as obsolete. Inventory availability is limited to existing stock (1034 pcs reported). For new designs and ongoing production, active substitute parts such as 4N25-X000, 4N25-X001, or 4N25-V are recommended to ensure long-term supply continuity.
Q: What does ROHS3 compliance mean for optoisolators?
A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. ROHS3 compliant parts are required for applications subject to EU environmental regulations and are preferred for modern industrial and consumer electronics.
Q: Can I interchange 4N25 variants from different manufacturers?
A: All 4N25 variants maintain the same pinout and basic electrical specifications (single channel, transistor output, DC input, 6-DIP package). However, verify isolation voltage rating, compliance certifications, and specific electrical parameters for your application before substitution. Manufacturer-specific variants may have different performance characteristics in edge-case operating conditions.
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