The 3C91C is a high-reliability optically coupled isolator consisting of an infrared emitting diode and a silicon NPN phototransistor in a hermetically sealed TO-72 package with 12.70 mm leads. It provides 1 kVDC electrical isolation between input and output, operates over a temperature range of -55°C to +125°C, and has a 935 nm wavelength. The device has a minimum current transfer ratio of 0.3 and a maximum collector current of 30 mA, with a collector-emitter voltage rating of 30 V. It is processed to MIL-PRF-19500 standards and features an input-to-output capacitance of up to 2.5 pF at 1 MHz. The collector is connected to the header-base-case in all versions.
Optocoupler DC-IN 1-CH Transistor DC-OUT 4-Pin TO-72 Clamshell Product overview: 3C91C from TT Electronics / Optek Technology is a Bipolar Transistor for signal amplification, switching, driver stages, discrete power control, and general electronic circuit design. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include transistor, BJT, switching, amplification, Bipolar Transistor, Transistor, Photovoltaic Output Optoisolators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 903-3C91C can be used for catalog matching and distributor lookup.
| ERSAELECTRONICS PTE. LTD. | |
|---|---|
| Product Category | Bipolar RF Transistors |
| Product Number | 903-3C91C |
| Product Name | Bipolar Transistor |
| Package Type | Clamshell |
| Packing Method | Clamshell |
| IC(max) | 30000 milliamps |
