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Vishay Semiconductor Opto Division TLHF4902
- Part No.:
- TLHF4902
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- Radial
- Datasheet:
-
TLHF4902.pdf
- Description:
- LED ORANGE CLEAR T-1 T/H
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
TLHF4902 from Vishay Semiconductors is a high-intensity soft orange AlInGaP LED in a standard Ø3 mm (T-1) clear plastic package, with dominant wavelength 605 nm (typ), luminous intensity 300 mcd at 10 mA, and viewing angle ±16°. It delivers high brightness for indicator and legend lighting in industrial control panels and instrumentation.
For engineers reviewing the TLHF4902 datasheet, TLHF4902 pinout, TLHF4902 application, or TLHF4902 equivalent, key selection criteria include forward voltage (1.9–2.6 V at 20 mA), reverse voltage rating (5 V), junction capacitance (15 pF), thermal resistance (400 K/W), and luminous intensity binning across standardized groups (V–EE).
Technical Context
This device uses AlInGaP-on-GaAs epitaxial technology to achieve high radiometric efficiency in the soft orange spectrum. Its narrow ±16° half-intensity angle enables focused beam output without secondary optics, while categorized luminous intensity and dominant wavelength bins ensure visual uniformity across production batches.
The TLHF4902 operates with DC or pulsed forward current up to 30 mA (Tamb ≤ 60 °C), supports surge currents of 100 mA for tp ≤ 10 μs, and maintains stable optical output over –40 to +100 °C ambient temperature range with junction temperature limited to 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Dominant wavelength | 605 nm (typ) - defines soft orange color point for human-eye-optimized status indication |
| Luminous intensity | 300 mcd at 10 mA - high-brightness output suitable for daylight-readable indicators |
| Viewing angle | ±16° - narrow beam enables directional light control without reflectors or lenses |
| Forward voltage | 1.9–2.6 V at 20 mA - compatible with standard 3.3 V and 5 V logic-level drive circuits |
| Reverse voltage | 5 V - limits need for external reverse-protection diodes in low-voltage applications |
| Junction capacitance | 15 pF at 0 V, 1 MHz - supports fast switching (<100 ns rise/fall) in multiplexed display drivers |
| Thermal resistance | 400 K/W - requires minimal heatsinking for continuous operation at rated current |
Pinout & Package
Package: Ø3 mm (T-1) clear plastic package per drawing 6.544-5255.02-4; body diameter 2.9 ± 0.1 mm, total length 6.1 ± 0.3 mm, lead spacing 2.54 mm nominal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive DC input terminal | Connected to current-limiting resistor or constant-current driver; polarity-sensitive for correct illumination |
| Cathode (K) | Ground return path | Common reference for multiple LEDs in matrix or bar-graph configurations; must be tied to system ground |
Key Features
| Feature | Design Value |
|---|---|
| AlInGaP-on-GaAs technology | Enables high-efficiency soft orange emission with superior thermal stability vs. GaAsP |
| Luminous intensity binning | Standardized groups (V–EE) allow consistent brightness matching across assemblies without manual sorting |
| Color wavelength binning | Six dominant wavelength groups (1–6, 598–611 nm) ensure uniform hue in multi-LED arrays |
| DC and pulsed current support | Rated for 30 mA DC (≤60 °C) and 100 mA surges (≤10 μs), enabling use in both steady-state and multiplexed driving |
Applications
| Status Indicator | Legend Illumination |
|---|---|
Use Scenario: Visual power-on, fault, or mode status on industrial HMIs and test equipment front panels. IC Role / Device Role / Timing Role: Discrete light source driven directly by microcontroller GPIO or dedicated LED driver IC. Use Value: High 300 mcd intensity and narrow ±16° beam ensure legibility at >2 m distance under ambient lighting. | Use Scenario: Backlighting engraved or printed labels on control panels, switches, and membrane keypads. IC Role / Device Role / Timing Role: Edge-lit or direct-mount discrete emitter positioned behind translucent legend areas. Use Value: Soft orange chromaticity (605 nm typ) provides high contrast against black/white legends with minimal glare. |
| Readout Light | Maintenance Indicator |
Use Scenario: Local illumination of analog meter scales, digital displays, or mechanical dials in field instruments. IC Role / Device Role / Timing Role: Constant-current biased LED mounted adjacent to readout surface. Use Value: Tight ±16° viewing angle confines light to target area, reducing stray reflection and improving measurement accuracy. | Use Scenario: Service-mode status signaling inside enclosures during calibration, firmware update, or diagnostic routines. IC Role / Device Role / Timing Role: Low-duty-cycle pulsed indicator activated only during maintenance windows. Use Value: 15 pF junction capacitance and fast turn-on enable clean 1–10 kHz blinking without waveform distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED indicator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay TLHF4900 | Identical package, same AlInGaP die, but luminous intensity binned to lower group (V: 63–125 mcd) | Lower brightness suitable for low-ambient-light environments or space-constrained PCB layouts | Select TLHF4900 when reduced intensity avoids washout or meets Class 1 laser safety thresholds |
| ROHM SML-010PTT86R | Ø3 mm package, soft orange, 270 mcd @ 20 mA, VF = 2.0–2.4 V, λd = 605 nm, but no wavelength binning | Lacks standardized color grouping; requires vendor lot qualification for hue consistency | Choose SML-010PTT86R where cost sensitivity outweighs strict bin-matching requirements |
Compared with TLHF4900 and SML-010PTT86R, the TLHF4902 offers higher guaranteed luminous intensity (300 mcd) and full wavelength binning-critical for multi-unit visual alignment in OEM panel assemblies-while maintaining identical footprint and drive compatibility.
Availability
TLHF4902 is available at Aetrix Electronics and suitable for industrial HMIs, instrumentation readouts, and maintenance indicator systems requiring stable component supply, long-term luminance consistency, and batch-to-batch visual uniformity.
Supply support for TLHF4902 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 manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, PA.
The TLHF4902 belongs to Vishay's standard-series high-intensity LED family, engineered specifically for reliable, color-consistent visual indication in harsh industrial and transportation environments.
FAQ
What is the maximum continuous forward current rating for TLHF4902?
The TLHF4902 has a maximum DC forward current of 30 mA at ambient temperatures ≤60 °C. Exceeding this limit risks accelerated lumen depreciation and junction overheating. Derating is required above 60 °C ambient, per the absolute maximum ratings table in the Vishay datasheet 83025. Always verify thermal design with the 400 K/W junction-to-ambient resistance value when operating near rating limits. The TLHF4902 must not be operated beyond its specified electrical boundaries.
Does TLHF4902 require external current limiting?
Yes, the TLHF4902 requires an external series current-limiting resistor or constant-current driver. It exhibits nonlinear V–I characteristics and lacks internal regulation. For 5 V supply operation at 20 mA, a typical resistor value is 150 Ω (calculated using worst-case VF = 1.9 V). The TLHF4902's forward voltage range (1.9–2.6 V) necessitates resistor tolerance consideration to maintain intensity consistency across production units.
How is luminous intensity binned for TLHF4902?
The TLHF4902 is shipped in standardized luminous intensity groups (V through EE), each specifying a min/max mcd range-e.g., group Z spans 240–480 mcd at 10 mA. Each bag contains LEDs from only one intensity group, ensuring visual uniformity. The TLHF4902's 300 mcd typical value falls within group Y (180–360 mcd) or Z depending on manufacturing lot; exact group is marked on packaging per Vishay's binning protocol.
Can TLHF4902 be used in multiplexed LED arrays?
Yes, the TLHF4902 supports pulsed operation with 100 mA surge current capability for pulse widths ≤10 μs, making it suitable for time-multiplexed displays. Its 15 pF junction capacitance ensures fast turn-on/turn-off response, minimizing ghosting. However, peak current and duty cycle must stay within thermal limits-verify average power dissipation does not exceed 80 mW. The TLHF4902's narrow ±16° viewing angle also helps isolate adjacent pixels in dense arrays.
What is the storage temperature range for TLHF4902?
The TLHF4902 has a specified storage temperature range of –55 to +100 °C, per Vishay datasheet 83025. This exceeds typical industrial requirements and allows safe long-term warehousing in uncontrolled environments. Note that soldering must occur within 5 seconds at 260 °C (measured 2 mm from body), and post-soldering handling must avoid mechanical stress on leads. The TLHF4902's robust construction supports reflow and hand-soldering processes when these thermal and mechanical limits are observed.
TLHF4902 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- -
- Package/Case:
- Radial
- Packaging:
- Bulk
- Product Status:
- Active
- Color:
- Orange
- Configuration:
- Standard
- Lens Color:
- -
- Lens Transparency:
- Clear
- Millicandela Rating:
- 440mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 3mm, T-1
- Voltage - Forward (Vf) (Typ):
- 1.9V
- Current - Test:
- 10mA
- Viewing Angle:
- 32°
- Mounting Type:
- Through Hole
- Wavelength - Dominant:
- 606nm
- Wavelength - Peak:
- 610nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- T-1
- Size / Dimension:
- -
TLHF4902 FAQ
1.How can I place an order for TLHF4902 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLHF4902 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLHF4902 reliable?
The price and inventory of TLHF4902 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLHF4902 is usually 5 days.
3.What payment methods are accepted for TLHF4902?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLHF4902 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLHF4902?
TLHF4902 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLHF4902 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLHF4902?
For technical support, including TLHF4902 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLHF4902 requirements.
6.How does Aetrix verify that TLHF4902 is sourced from the original manufacturer or authorized distributors?
All TLHF4902 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLHF4902 meets industry standards.
7.What is the process for return or replacement of TLHF4902?
All TLHF4902 units undergo pre-shipment inspection (PSI). If there is an issue with TLHF4902, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLHF4902 part is unused and in its original packaging.
Return procedure for TLHF4902:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLHF4902 Tags
-
LTST-C281KRKT
Lite-On Inc.
-
150060GS75000
Würth Elektronik
-
150060VS75000
Würth Elektronik
-
150060AS75000
Würth Elektronik
-
150060YS75000
Würth Elektronik
-
150060SS75000
Würth Elektronik
-
150060BS75000
Würth Elektronik
-
151031VS06000
Würth Elektronik
-
151033RS03000
Würth Elektronik
-
150080BS75000
Würth Elektronik
-
150080GS75000
Würth Elektronik
-
150141GS73100
Würth Elektronik
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