OP140B TT ELECTRONICS / OPTEK TECHNOLOGY LED (Other) In Stock
TT Electronics / Optek OP140B is a plastic infrared emitting diode operating at 935 nm peak wavelength, designed for optocoupler, remote control, and optical sensor applications. It delivers reliable IR emission with compact through-hole packaging and low forward voltage, available for worldwide distribution.
- Manufacturer
- TT ELECTRONICS / OPTEK TECHNOLOGY
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- OP140B Datasheet PDF
- Category
- LED
- Price
- From $0.6375(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Peak emission wavelength of 935 nm in the near-infrared spectrum for phototransistor and photodetector pairing
- Plastic through-hole package providing low-cost, robust mounting for IR emitter applications
- Low forward voltage operation enabling compatibility with low-supply voltage drive circuits
- Designed for use with optocouplers, remote control systems, and proximity sensor modules
- RoHS compliant construction for environmentally regulated market applications
Applications
The OP140B is widely used in optocoupler circuits, infrared remote control transmitters, and proximity detection systems in consumer electronics, industrial automation, and medical equipment. Its 935 nm emission wavelength is well matched to silicon photodetector and phototransistor peak sensitivity, maximizing coupling efficiency in short-range optical isolation and sensing designs. The through-hole package simplifies prototyping and low-volume production while remaining compatible with automated insertion equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what wavelength does OP140B emit, and which types of photodetectors are best matched to it?
The OP140B emits at a 935 nm peak wavelength in the near-infrared range, which closely matches the peak sensitivity of silicon phototransistors and photodiodes typically centered around 900 nm to 1000 nm. This pairing maximizes optical coupling efficiency in isolation and proximity sensing circuits operating at standard drive currents of 20 mA to 100 mA.
How does OP140B compare to a visible-light LED for use in an enclosed optocoupler or object detection circuit?
Unlike visible-light LEDs, OP140B emits at 935 nm, which is invisible to the human eye and not affected by ambient visible light interference. In enclosed optocouplers or short-range object detection systems, this reduces false triggering from room lighting, and the IR emitter can be driven at 50 mA forward current without visible glow that could interfere with nearby optical sensors.
What are the typical forward voltage and forward current ratings for OP140B in a low-supply 3.3 V MCU-driven circuit?
The OP140B is a through-hole infrared emitting diode with a typical forward voltage of approximately 1.2 V to 1.5 V at 20 mA forward current, making it directly drivable from a 3.3 V MCU GPIO output through a current-limiting resistor of around 100 ohm. This makes it suitable for microcontroller-driven IR transmission in remote control and sensor applications.
For procurement of OP140B in industrial automation projects, is this part RoHS compliant and what package style does it use?
Yes, OP140B is RoHS compliant, making it eligible for use in environmentally regulated industrial and consumer products. It is supplied in a plastic through-hole package, which supports manual placement as well as automated through-hole insertion in low-to-medium volume production runs without requiring SMT reflow equipment.
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Why Buy from FindMyChip
About TT ELECTRONICS / OPTEK TECHNOLOGY
TT ELECTRONICS / OPTEK TECHNOLOGY is a leading electronic component manufacturer. FindMyChip sources TT ELECTRONICS / OPTEK TECHNOLOGY ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7100 | $0.71 |
| 5+ | $0.7000 | $3.50 |
| 10+ | $0.6700 | $6.70 |
| 300+ | $0.6650 | $199.50 |
| 750+ | $0.6400 | $480.00 |
| 2500+ | $0.6375 | $1593.75 |
In Stock · 24h Response · Worldwide Shipping
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