LTR-3208 Lite-On LED (Multiple) (Other) In Stock
Lite-On LTR-3208 is a high-sensitivity single-channel infrared phototransistor in a through-hole package with a 30 V minimum collector-emitter breakdown voltage, 4 mA nominal light current, and 100 nA maximum dark current. It is designed for infrared detection and remote control applications. Available from stock with worldwide shipping.
- Manufacturer
- Lite-On
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- LTR-3208 Datasheet PDF
- Category
- LED (Multiple)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- High-sensitivity infrared phototransistor with 4 mA nominal light current enables reliable detection of weak IR signals in remote control and optical sensing applications
- 100 nA maximum dark current minimizes quiescent power draw, making LTR-3208 suitable for battery-powered sensing systems requiring low standby current
- 30 V minimum collector-emitter breakdown voltage allows operation in industrial circuits with elevated supply rails without risk of transistor breakdown
Applications
The LTR-3208 is well-suited for consumer electronics IR remote control receivers, industrial object detection sensors, and optical proximity switches where high photosensitivity to near-infrared wavelengths is required. Its through-hole mounting simplifies prototyping and low-volume board assembly, and its high sensitivity reduces the IR emitter drive current needed to achieve reliable detection across typical indoor operating distances.
Specifications
| Factory Lead Time | 22Weeks |
| YTEOL | 7.24 |
| Additional Feature | HIGH SENSITIVITY |
| Coll-Emtr Bkdn Voltage-Min | 30V |
| Configuration | SINGLE |
| Dark Current-Max | 100nA |
| Infrared Range | YES |
| Light Current-Nom | 4mA |
| Mounting Feature | THROUGH HOLE MOUNT |
| Number of Functions | 1 |
| Optoelectronic Device Type | PHOTO TRANSISTOR |
| Packing Method | TR |
| Power Dissipation-Max | 0.1W |
| Response Time-Max | 0.000005s |
| Shape | ROUND |
| Size | 5mm |
| Surface Mount | NO |
| Package | Other |
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
What is the nominal light current of the LTR-3208 and how does its high sensitivity benefit IR remote control designs?
The LTR-3208 delivers a 4 mA nominal light current under standard infrared illumination conditions, reflecting its high-sensitivity classification. This elevated output current allows simpler demodulator circuits to decode IR signals reliably at distances exceeding 5 meters, reducing the required emitter LED drive current and improving overall system power efficiency in consumer remote control receivers and set-top box front panels.
What maximum dark current does the LTR-3208 specify and why does it matter for battery-powered sensor applications?
The LTR-3208 specifies a maximum dark current of 100 nA, which represents the leakage current flowing through the phototransistor when no infrared light is present. In battery-powered proximity sensors or IR barrier systems operating in sleep mode, this sub-microamp dark current is low enough to sustain weeks of standby operation on a standard 3 V coin cell without significant battery drain.
How should engineers account for the 22-week factory lead time when designing LTR-3208 into a new product?
With a 22-week factory lead time, engineers should place LTR-3208 purchase orders at least 6 months before the scheduled production start date to avoid supply chain delays. For designs entering NPI or prototyping phases, ordering buffer stock of at least 20% above projected build quantity is advisable. Procurement teams should also identify alternative high-sensitivity IR phototransistors with 30 V breakdown and comparable 4 mA light current as approved substitutes in case of extended supply constraints.
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