Part Details for 4N37 by Fairchild Semiconductor Corporation
Results Overview of 4N37 by Fairchild Semiconductor Corporation
- Distributor Offerings: (7 listings)
- Number of FFF Equivalents: (2 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (4 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
4N37 Information
4N37 by Fairchild Semiconductor Corporation is an Optocoupler.
Optocoupler are under the broader part category of Optoelectronics.
Optoelectronic components work to detect, generate, and control light. They can essentially produce and/or react to light. Read more about Optoelectronics on our Optoelectronics part category page.
Price & Stock for 4N37
| Part # | Distributor | Description | Stock | Price | Buy | |
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Bristol Electronics | Min Qty: 9 | 414 |
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$0.1746 / $0.5820 | Buy Now |
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Quest Components | NPN-OUTPUT DC-INPUT OPTOCOUPLER,1-CHANNEL,1.5KV ISOLATION,DIP | 295 |
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$0.1552 / $0.7760 | Buy Now |
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Quest Components | NPN-OUTPUT DC-INPUT OPTOCOUPLER,1-CHANNEL,1.5KV ISOLATION,DIP | 295 |
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$0.4595 / $0.9190 | Buy Now |
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Quest Components | NPN-OUTPUT DC-INPUT OPTOCOUPLER,1-CHANNEL,1.5KV ISOLATION,DIP | 14 |
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$0.4595 / $0.5514 | Buy Now |
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Quest Components | NPN-OUTPUT DC-INPUT OPTOCOUPLER,1-CHANNEL,1.5KV ISOLATION,DIP | 10 |
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$0.2800 / $0.5600 | Buy Now |
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Quest Components | NPN-OUTPUT DC-INPUT OPTOCOUPLER,1-CHANNEL,1.5KV ISOLATION,DIP | 5 |
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$0.8180 / $1.0225 | Buy Now |
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Chip 1 Exchange | INSTOCK | 934 |
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RFQ |
Part Details for 4N37
4N37 CAD Models
4N37 Part Data Attributes
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4N37
Fairchild Semiconductor Corporation
Buy Now
Datasheet
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4N37
Fairchild Semiconductor Corporation
Transistor Output Optocoupler, 1-Element, 5300V Isolation, DIP-6
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| Rohs Code | Yes | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | FAIRCHILD SEMICONDUCTOR CORP | |
| Package Description | DIP-6 | |
| Reach Compliance Code | unknown | |
| HTS Code | 8541.40.80.00 | |
| Additional Feature | UL RECOGNIZED | |
| Coll-Emtr Bkdn Voltage-Min | 30 V | |
| Configuration | SINGLE | |
| Current Transfer Ratio-Nom | 100% | |
| Dark Current-Max | 50 nA | |
| Forward Current-Max | 0.1 A | |
| Isolation Voltage-Max | 5300 V | |
| JESD-609 Code | e3 | |
| Number of Elements | 1 | |
| Operating Temperature-Max | 100 °C | |
| Operating Temperature-Min | -55 °C | |
| Optoelectronic Device Type | TRANSISTOR OUTPUT OPTOCOUPLER | |
| Terminal Finish | Matte Tin (Sn) |
Alternate Parts for 4N37
This table gives cross-reference parts and alternative options found for 4N37. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of 4N37, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| 4N37 | General Instrument Optoelectronics | Check for Price | Transistor Output Optocoupler, | 4N37 vs 4N37 |
| 4N37 | North American Philips Discrete Products Div | Check for Price | Transistor Output Optocoupler, 1-Element, 1500V Isolation, | 4N37 vs 4N37 |
4N37 Frequently Asked Questions (FAQ)
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The 4N37 can operate safely between -55°C to 100°C, but the maximum junction temperature should not exceed 125°C.
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To ensure reliable operation in high-noise environments, use a shielded cable for the input signal, add a bypass capacitor between the input pins, and consider using a common-mode filter or a shielded optocoupler like the 4N37F.
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The recommended input current for the 4N37 is between 5mA to 10mA, but it can handle up to 20mA. Higher input currents may reduce the optocoupler's lifespan.
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The 4N37 has a typical propagation delay of 2μs and a rise/fall time of 1μs, making it suitable for low-to-medium speed applications (up to 100kHz). For high-speed data transmission, consider using a faster optocoupler like the 6N137 or 10MBO.
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Choose the input resistor (R1) based on the input voltage and desired input current. The output resistor (R2) should be selected based on the output voltage and desired output current. A general rule of thumb is to use R1 = (Vin - 1.4V) / Iin and R2 = Vout / Iout.