onsemi QTLP650C23TR

Overview

QTLP650C23TR from Fairchild Semiconductor is a surface-mount bi-color LED lamp with HER (High-Efficiency Red) and Yellow emitters in a single 1210 package, rated for 30 mA continuous forward current per die, 2.8 V max forward voltage at 20 mA, and 2.5/4.0 mcd minimum luminous intensity (HER/Yellow). It delivers wide 140° viewing angle and is optimized for keypad and push-button backlighting in compact consumer interfaces.

For engineers reviewing the QTLP650C23TR datasheet, pinout, applications, or equivalent options, key selection criteria include dual-color spectral separation (630 nm dominant red / 590 nm dominant yellow), moisture-proof packaging, 3.2 × 2.7 × 1.1 mm footprint compatibility with standard 1210 land patterns, and tape-and-reel delivery (2,000 units/reel).

Technical Context

This bi-color LED integrates two independent semiconductor die-AlGaAs-based HER and GaP-based Yellow-within a single 4-pin surface-mount package. Each emitter has separate anode/cathode terminals, enabling independent control of red and yellow illumination without external current-sharing components.

It operates within -40°C to +85°C ambient range, supports IR reflow soldering (peak 240°C, 5 sec max), and uses water-clear optics to maximize light extraction efficiency. The device is not rated for life-support applications and requires polarity-aware PCB layout per cathode marking.

Key Specifications

Pinout & Package

QTLP650C23TR uses a 4-pin surface-mount package (1210 footprint) with cathode-marked top-side polarity identification. Pin 1 = HER anode, Pin 2 = HER cathode, Pin 3 = Yellow cathode, Pin 4 = Yellow anode - enabling independent forward biasing of each die.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bi-color LED applications.

Compared with LTL-307EE and APL3015SYC, QTLP650C23TR offers superior angular uniformity and true independent dual-channel control in the industry-standard 1210 form factor-critical for precise color-state encoding in space-constrained human-interface designs.

Availability

QTLP650C23TR is available at Aetrix Electronics and suitable for keypad backlighting, push-button status indication, and LCD edge lighting requiring stable component supply and consistent optical performance across production batches.

Supply support for QTLP650C23TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Fairchild Semiconductor was a U.S.-based analog and power IC manufacturer acquired by ON Semiconductor in 2016; its legacy LED portfolio emphasizes reliability, manufacturability, and standard-package compatibility.

The QTLP650C23TR belongs to Fairchild's standard-brightness surface-mount LED family, engineered specifically for cost-sensitive, high-volume human-interface backlighting where color distinction, wide viewing angle, and reflow compatibility are essential.

FAQ

What is the pin configuration of QTLP650C23TR?

QTLP650C23TR has four terminals: Pin 1 is HER anode, Pin 2 is HER cathode, Pin 3 is Yellow cathode, and Pin 4 is Yellow anode. The cathode side is marked on the top surface. This configuration allows fully independent drive of the red and yellow emitters without shared current paths, making QTLP650C23TR suitable for discrete color-state signaling in UI applications.

Does QTLP650C23TR support IR reflow soldering?

Yes, QTLP650C23TR is qualified for IR reflow soldering with a peak temperature of 240°C for up to 5 seconds, per its original Fairchild specification. The package uses moisture-proof construction and meets MSL Level 1, eliminating pre-bake requirements. QTLP650C23TR's thermal profile compliance ensures robust joint formation without delamination or lens discoloration during standard SMT assembly.

What are the dominant wavelengths for each color in QTLP650C23TR?

The dominant wavelength for the HER (High-Efficiency Red) die in QTLP650C23TR is 630 nm, and for the Yellow die it is 590 nm. These values are measured at 20 mA forward current and define the perceived hue under standard viewing conditions. QTLP650C23TR's spectral separation enables clear visual distinction between red and yellow states in user-interface applications.

Can QTLP650C23TR be used in outdoor or high-humidity environments?

QTLP650C23TR features moisture-proof packaging and operates from -40°C to +85°C, supporting use in high-humidity indoor environments such as kitchens, bathrooms, or industrial enclosures. However, its water-clear epoxy lens is not rated for direct UV exposure or prolonged outdoor weathering. For QTLP650C23TR deployment in semi-outdoor kiosks, conformal coating of the PCB is recommended to protect solder joints and adjacent circuitry.

What is the minimum luminous intensity of QTLP650C23TR at 20 mA?

At 20 mA forward current, QTLP650C23TR delivers a minimum luminous intensity of 2.5 mcd for the HER die and 4.0 mcd for the Yellow die. These guaranteed minima ensure reliable visibility in typical indoor ambient lighting (≤100 lux). QTLP650C23TR's typical intensities are 4.0 mcd (HER) and 6.5 mcd (Yellow), providing margin for aging and temperature derating in long-life applications.