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4N47UTX Equivalent & Substitute Parts
Part Overview
The 4N47UTX is an optoisolator transistor with base output manufactured by TT Electronics/Optek Technology, designed for 1000VDC isolation applications in 6-LCC surface mount packaging. This component provides galvanic isolation for DC input signals with transistor output capability including base access. The 4N47UTX is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 4N47UTX |
| Manufacturer | TT Electronics / Optek Technology |
| Category | Optoisolators |
| Package / Case | 6-SMD, No Lead |
| Supplier Device Package | 6-LCC (6.22x4.32) |
| Number of Channels | 1 |
| Voltage - Isolation | 1000VDC |
| Current Transfer Ratio (Min) | 50% @ 2mA |
| Output Type | Transistor with Base |
| Voltage - Output (Max) | 45V |
| Voltage - Forward (Vf) (Typ) | 1.5V (Max) |
| Current - DC Forward (If) (Max) | 40 mA |
| Vce Saturation (Max) | 300mV |
| Rise / Fall Time (Typ) | 20µs, 20µs |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the 4N47UTX is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters define valid substitutes:
- Voltage isolation rating: 1000VDC
- Number of channels: 1
- Output configuration: Transistor with Base
- Current transfer ratio minimum: 50% @ 2mA
- Maximum output voltage: 45V
- Maximum forward voltage: 1.5V
- Maximum forward current: 40 mA
- Maximum Vce saturation: 300mV
- Rise and fall time: 20µs, 20µs
- Operating temperature range: -55°C ~ 125°C
- Package type: 6-SMD, No Lead (6-LCC 6.22x4.32)
- Mounting type: Surface Mount
The 4N47U meets all specified parameters and is manufactured by the same supplier, providing direct functional equivalence with active product status.
Parameter Comparison
| Parameter | 4N47UTX (Main Part) | 4N47U (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | TT Electronics / Optek Technology | TT Electronics / Optek Technology | Identical |
| Number of Channels | 1 | 1 | Identical |
| Voltage - Isolation | 1000VDC | 1000VDC | Identical |
| Current Transfer Ratio (Min) | 50% @ 2mA | 50% @ 2mA | Identical |
| Output Type | Transistor with Base | Transistor with Base | Identical |
| Voltage - Output (Max) | 45V | 45V | Identical |
| Voltage - Forward (Vf) (Typ) | 1.5V (Max) | 1.5V (Max) | Identical |
| Current - DC Forward (If) (Max) | 40 mA | 40 mA | Identical |
| Vce Saturation (Max) | 300mV | 300mV | Identical |
| Rise / Fall Time (Typ) | 20µs, 20µs | 20µs, 20µs | Identical |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | Identical |
| Package / Case | 6-SMD, No Lead | 6-SMD, No Lead | Identical |
| Supplier Device Package | 6-LCC (6.22x4.32) | 6-LCC (6.22x4.32) | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Product Status | Obsolete | Active | Substitute is Active |
Engineering Selection Recommendations
The 4N47U is the direct equivalent for the obsolete 4N47UTX. Both components share identical electrical specifications, mechanical packaging, and compliance certifications. The 4N47U maintains active product status with TT Electronics / Optek Technology, ensuring ongoing availability and manufacturing support. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The 4N47U is available in bulk packaging with confirmed inventory, making it suitable for production applications requiring the 4N47UTX specification.
Frequently Asked Questions (FAQ)
Q: Can the 4N47U directly replace the 4N47UTX in existing designs?
A: Yes. The 4N47U provides complete electrical and mechanical equivalence to the 4N47UTX across all specified parameters, including isolation voltage, current transfer ratio, output characteristics, and package dimensions. No circuit modifications are required.
Q: What is the difference between the 4N47UTX and 4N47U?
A: The primary difference is product status. The 4N47UTX is obsolete, while the 4N47U is active. All electrical and mechanical specifications are identical.
Q: Are there any packaging differences between these parts?
A: No. Both components use identical 6-SMD, No Lead packaging (6-LCC 6.22x4.32) for surface mount assembly. PCB footprints and reflow profiles are compatible.
Q: Do both parts meet current compliance standards?
A: Yes. Both the 4N47UTX and 4N47U are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.
Q: What is the isolation voltage rating for these optoisolators?
A: Both parts provide 1000VDC galvanic isolation between input and output circuits.
Q: Can these parts be used in high-temperature applications?
A: Yes. Both components operate across the temperature range of -55°C to 125°C, supporting industrial and extended temperature applications.
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