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Vishay Semiconductor Opto Division TLHF4601
- Part No.:
- TLHF4601
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- Radial
- Datasheet:
-
TLHF4601.pdf
- Description:
- LED ORANGE DIFFUSED T-1 T/H
- Quantity:
- Payment:
- Shipping:
Inventory:12,479
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Product details
Overview
TLHF4601 from Vishay Semiconductors is a high-intensity soft orange AlInGaP LED in a standard 3 mm (T-1) diffused plastic package, with luminous intensity of 40–125 mcd at 10 mA, dominant wavelength of 602–609 nm, and ±60° viewing angle. It serves as an indicator or status light in industrial control panels and instrumentation where color-consistent, wide-angle visibility is required.
For engineers reviewing the TLHF4601 datasheet, TLHF4601 pinout, TLHF4601 application, or TLHF4601 equivalent, key selection criteria include luminous intensity binning (Group V), forward voltage range (2.0–2.6 V at 20 mA), thermal resistance (400 K/W), and compatibility with DC or pulsed drive circuits up to 30 mA continuous.
Technical Context
The TLHF4601 uses AlInGaP-on-GaAs epitaxial technology to deliver high-efficiency soft orange emission with tight wavelength binning (Color Group 3 or 4). Its diffused lens and ±60° half-intensity angle enable uniform illumination across broad viewing zones without secondary optics.
Rated for operation from –40 °C to +100 °C ambient, the device supports 30 mA DC forward current and withstands 5 V reverse voltage. Junction-to-ambient thermal resistance is 400 K/W, limiting power dissipation to 80 mW at Tamb ≤ 60 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Luminous intensity | 40–125 mcd at 10 mA - defines visible output level for status indication under standard test conditions |
| Dominant wavelength | 602–609 nm - specifies soft orange chromaticity suitable for human-perceptible status signaling |
| Forward voltage | 2.0–2.6 V at 20 mA - determines series resistor value and driver voltage headroom requirements |
| Viewing angle | ±60° - enables wide-field-of-view mounting without directional aiming |
| Max DC forward current | 30 mA - sets absolute upper limit for continuous drive without derating |
| Junction-to-ambient thermal resistance | 400 K/W - constrains PCB copper area and ambient temperature for thermal management |
| Reverse voltage rating | 5 V - defines maximum allowable reverse bias before leakage or damage |
Pinout & Package
TLHF4601 is a two-terminal through-hole LED in a standard Ø3 mm (T-1) diffused plastic package per drawing 6.544-5255.01-4. Cathode is identified by a flat edge on the package body and shorter lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal | Connected to current-limiting resistor and supply rail; polarity must be observed to avoid reverse breakdown |
| Cathode | Negative terminal | Identified by flat edge and shorter lead; connects to ground or low-side switch node |
Key Features
| Feature | Design Value |
|---|---|
| AlInGaP-on-GaAs die technology | Enables high radiant efficiency and stable soft orange output over temperature and lifetime |
| Luminous intensity binning (Group V) | Ensures consistent brightness across units within a single bag-no mixing of intensity groups |
| Color wavelength binning (Groups 3–4) | Guarantees dominant wavelength between 602–609 nm for uniform appearance in multi-LED arrays |
| Wide ±60° viewing angle | Eliminates need for external diffusers or reflectors in panel-mount indicator applications |
| DC and high peak current capability | Supports both steady-state and pulsed drive (e.g., multiplexed displays) up to 30 mA continuous |
Applications
| Status Indicator | Instrument Panel Light |
|---|---|
Use Scenario: Visual power-on or fault condition feedback on industrial HMIs and PLC modules. IC Role / Device Role / Timing Role: Discrete optical emitter providing human-readable state information. Use Value: Soft orange hue offers high daytime visibility and low eye fatigue; ±60° viewing ensures readability from multiple operator positions. | Use Scenario: Backlighting segmented legends and analog meter scales in test equipment. IC Role / Device Role / Timing Role: Constant-current driven discrete light source for non-uniform surface illumination. Use Value: Diffused 3 mm package delivers even glow without hotspots; Group V intensity binning maintains consistent legend contrast across production batches. |
| Readout Display | Maintenance Access Light |
Use Scenario: Digit or symbol illumination in 7-segment or dot-matrix readouts for embedded controllers. IC Role / Device Role / Timing Role: Individually addressable segment emitter in multiplexed display configurations. Use Value: High 40–125 mcd output enables legibility in ambient light up to 10,000 lux; AlInGaP technology ensures minimal lumen depreciation over 10k hours. | Use Scenario: Localized task lighting inside enclosures during field servicing of telecom or power electronics gear. IC Role / Device Role / Timing Role: Low-power, long-life indicator lamp activated manually or via service mode signal. Use Value: 30 mA max rating allows direct drive from microcontroller GPIO with series resistor; operating range down to –40 °C supports outdoor cabinet use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED indicator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay TLHF4600 | Luminous intensity 10–26 mcd (Group R/S); narrower intensity range and lower typical output | Better suited for low-brightness, low-power indicator roles where glare must be minimized | Select TLHF4600 when lower intensity suffices and tighter binning consistency is prioritized over output level |
| Kingbright APL-3013SURK | Soft orange, 50–150 mcd at 20 mA, 2.0–2.4 V VF, same 3 mm T-1 package but non-diffused lens | Higher intensity but narrower ±30° viewing angle; requires optical design adjustment for wide-angle coverage | Choose APL-3013SURK only if higher output is critical and viewing angle can be compensated externally |
Compared with TLHF4601, TLHF4600 offers tighter intensity control at lower output, while APL-3013SURK trades wider viewing angle for higher luminance-neither is pin-compatible, but both serve overlapping indicator functions with distinct optical trade-offs.
Availability
TLHF4601 is available at Aetrix Electronics and suitable for industrial HMIs, instrumentation readouts, and maintenance lighting requiring stable component supply, consistent color matching, and wide-angle visibility.
Supply support for TLHF4601 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 Semiconductors is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability optoelectronics, power MOSFETs, and precision resistors.
The TLHF4601 belongs to Vishay's standard 3 mm LED product line, engineered for cost-effective, high-volume status indication in industrial, automotive, and consumer equipment where visual clarity and manufacturing consistency are essential.
FAQ
What is the luminous intensity range of the TLHF4601?
The TLHF4601 has a luminous intensity range of 40–125 mcd at 10 mA, corresponding to Intensity Group V per Vishay's classification table. This binning ensures consistent brightness across units shipped together, with no mixing of intensity groups within a single packaging unit.
What does the "soft orange" color designation mean for TLHF4601?
The "soft orange" designation for TLHF4601 refers to its dominant wavelength range of 602–609 nm, placing it between amber and red-orange on the CIE chromaticity diagram. This hue provides high perceptibility under varied ambient lighting while minimizing blue-light hazard and visual fatigue in prolonged viewing scenarios.
Can TLHF4601 be driven directly from a microcontroller GPIO pin?
Yes, TLHF4601 can be driven directly from a microcontroller GPIO pin when used with an appropriate current-limiting resistor. At 20 mA forward current and 2.0–2.6 V forward voltage, a typical 3.3 V MCU output requires a ~56 Ω resistor; ensure the GPIO can sink/source ≥30 mA continuously and observe absolute max ratings.
What is the thermal resistance specification for TLHF4601?
The TLHF4601 has a junction-to-ambient thermal resistance (RthJA) of 400 K/W. This value assumes standard PCB mounting with minimal copper area; designers must limit power dissipation to 80 mW at Tamb ≤ 60 °C and consider derating above that ambient temperature to maintain junction temperature below 100 °C.
How is color consistency ensured across TLHF4601 units?
Color consistency for TLHF4601 is ensured through wavelength binning into defined groups (e.g., Group 3: 602–605 nm; Group 4: 604–607 nm). Each packaging unit contains LEDs from only one wavelength group, preventing mixed-color shipments and enabling uniform appearance in multi-LED assemblies without post-production sorting.
TLHF4601 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:
- Diffused
- Millicandela Rating:
- 83mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 3mm, T-1
- Voltage - Forward (Vf) (Typ):
- 2V
- Current - Test:
- 20mA
- Viewing Angle:
- 120°
- Mounting Type:
- Through Hole
- Wavelength - Dominant:
- 606nm
- Wavelength - Peak:
- 610nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- T-1
- Size / Dimension:
- -
TLHF4601 FAQ
1.How can I place an order for TLHF4601 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLHF4601 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 TLHF4601 reliable?
The price and inventory of TLHF4601 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLHF4601 is usually 5 days.
3.What payment methods are accepted for TLHF4601?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLHF4601 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLHF4601?
TLHF4601 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLHF4601 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 TLHF4601?
For technical support, including TLHF4601 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLHF4601 requirements.
6.How does Aetrix verify that TLHF4601 is sourced from the original manufacturer or authorized distributors?
All TLHF4601 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 TLHF4601 meets industry standards.
7.What is the process for return or replacement of TLHF4601?
All TLHF4601 units undergo pre-shipment inspection (PSI). If there is an issue with TLHF4601, 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 TLHF4601 part is unused and in its original packaging.
Return procedure for TLHF4601:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLHF4601 Tags
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150060GS75000
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150060VS75000
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150060YS75000
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150060SS75000
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150060BS75000
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151031VS06000
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151033RS03000
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150080BS75000
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150080GS75000
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