Vishay Semiconductor Opto Division TLVY42N1P2-34

Overview

TLVY42N1P2-34 from Vishay Semiconductors is a yellow backlighting LED in a 3 mm tinted non-diffused package, engineered for uniform panel illumination with ±85° viewing angle, 28–71 mlm luminous flux at 15 mA, and 585–590 nm dominant wavelength using GaAsP-on-GaP technology.

For engineers reviewing the TLVY42N1P2-34 datasheet, TLVY42N1P2-34 pinout (2-lead axial), TLVY42N1P2-34 application in LCD backlighting or switch symbol illumination, or TLVY42N1P2-34 equivalent for yellow indicator LEDs, this page delivers verified optical, electrical, thermal, and packaging specifications aligned to Vishay Document #83392 Rev. 1.2.

Technical Context

The TLVY42N1P2-34 is a discrete visible-light emitter optimized for backlighting via its wide ±85° half-intensity angle and spatial radiation profile. Its GaAsP-on-GaP die structure delivers stable yellow output with dominant wavelength binned between 585 nm and 590 nm, and luminous flux categorized into P2 group (56–71 mlm).

Rated for 30 mA DC forward current at ≤60 °C ambient, it features low self-heating (R_thJA = 400 K/W) and operates across –40 to +100 °C. Reverse voltage tolerance is 6 V, and junction capacitance is 50 pF at 0 V/1 MHz - characteristics supporting reliable pulsed and continuous drive in space-constrained front-panel applications.

Key Specifications

Pinout & Package

TLVY42N1P2-34 uses a 2-lead axial through-hole package (Ø3.4 mm body, 4.6 mm total length, 2.54 mm lead pitch). Leads are unmarked; cathode is identified by shorter lead and flat edge on package base per Vishay drawing 6.544-5268.01-4.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar yellow backlighting LED applications.

Compared with TLVY42N1P2-34, TLHY42N1P2-34 shifts chromaticity toward green for improved daylight visibility but reduces yellow saturation, while SML-010YBT trades axial through-hole robustness and wide-angle coverage for SMT scalability and tighter board-level integration.

Availability

TLVY42N1P2-34 is available at Aetrix Electronics and suitable for display panel backlighting, switch symbol illumination, and measuring scale highlighting requiring stable component supply, batch-consistent luminous flux, and industrial-grade thermal resilience.

Supply support for TLVY42N1P2-34 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

Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in optoelectronics reliability and binning precision.

The TLVY42N1P2-34 belongs to Vishay's standard 3 mm backlighting LED series, designed specifically for cost-effective, high-uniformity illumination of human-interface elements in harsh ambient conditions.

FAQ

What is the maximum continuous forward current for TLVY42N1P2-34?

The TLVY42N1P2-34 supports up to 30 mA DC forward current when ambient temperature remains at or below 60 °C. Exceeding this current or operating above 60 °C ambient risks exceeding the 100 °C maximum junction temperature, accelerating lumen depreciation. Derating is required per Figure 1 in Vishay Document #83392 - at 85 °C ambient, max IF drops to ~18 mA. Always verify thermal design with actual board layout and airflow.

Does TLVY42N1P2-34 have a built-in resistor or require external current limiting?

TLVY42N1P2-34 is a bare LED die in a 2-lead axial package and does not include an integrated current-limiting resistor. It requires an external series resistor or constant-current driver to regulate forward current - for example, at 5 V supply and 20 mA target, a 130 Ω resistor compensates for typical 2.4–3.0 V VF. Failure to limit current will cause immediate thermal runaway and failure.

How is luminous flux binned for TLVY42N1P2-34, and what does "P2" signify?

"P2" denotes the highest luminous flux bin in the TLVY42N1P2-34 series, covering 56–71 mlm at 15 mA. Vishay ships only one flux bin per bag - no mixing - ensuring brightness consistency across reels. This binning enables predictable backlighting intensity without post-assembly sorting. The P2 designation appears in ordering codes and is verified per test condition: 25 ms pulse, ±11% measurement accuracy.

Can TLVY42N1P2-34 be used in reverse-biased mode?

Vishay specifies that reverse bias of TLVY42N1P2-34 is suitable only for short-term applications, with absolute maximum reverse voltage limited to 6 V. Continuous or repeated reverse operation degrades the GaAsP-on-GaP junction and may cause permanent leakage increase or open-circuit failure. It is not rated for AC driving or bidirectional signaling - use only in standard forward-biased DC or pulsed configurations.

What is the thermal resistance and how does it impact PCB layout for TLVY42N1P2-34?

TLVY42N1P2-34 has a junction-to-ambient thermal resistance (R_thJA) of 400 K/W. This high value means minimal heat conduction occurs through its axial leads alone. To sustain 30 mA at elevated ambient temperatures, add ≥25 mm² of 1 oz copper pour connected to both leads, avoid enclosing the LED in sealed plastic housings, and ensure ≥1 m/s airflow if operating above 60 °C ambient. Thermal simulation is recommended for high-density layouts.