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Vishay Semiconductor Opto Division TLHR6401
- Part No.:
- TLHR6401
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- Radial
- Datasheet:
-
TLHR6401.pdf
- Description:
- LED RED DIFFUSED T-1 3/4 T/H
- Quantity:
- Payment:
- Shipping:
Inventory:3,692
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Product details
Overview
TLHR6401 from Vishay Semiconductors is a red high-efficiency LED in a 5 mm tinted diffused T-1¾ package, with luminous intensity of 4–12 mcd at 10 mA, dominant wavelength 612–630 nm, and ±30° viewing angle-designed for status indication and legend lighting in industrial control panels.
For engineers reviewing the TLHR6401 datasheet, TLHR6401 pinout, TLHR6401 application, or TLHR6401 equivalent, this page delivers verified optical/electrical specs, package geometry, real-world use cases, and two validated alternative LEDs for visual interface design and indicator replacement.
Technical Context
The TLHR6401 uses GaAsP-on-GaP semiconductor technology to deliver stable red emission with narrow dominant wavelength spread (612–630 nm) and low forward voltage (2–3 V at 20 mA). Its ±30° half-intensity angle ensures wide visibility while maintaining on-off contrast in ambient light.
Rated for DC and pulsed operation up to 1 A surge current (tp ≤ 10 μs), it supports reliable indicator function across -40 °C to +100 °C ambient range, with thermal resistance of 350 K/W and maximum junction temperature of 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Luminous intensity | 4–12 mcd at 10 mA - defines brightness level for clear visibility in panel-mounted status indicators |
| Dominant wavelength | 612–630 nm - specifies red chromaticity compliant with IEC 60068-2-17 visual signaling requirements |
| Forward voltage | 2–3 V at 20 mA - determines minimum drive voltage and series resistor sizing in 3.3 V/5 V logic-level circuits |
| Viewing angle | ±30° - enables uniform illumination across 60° cone without hotspots, suitable for front-panel legends |
| Absolute max forward current | 30 mA continuous - sets upper limit for steady-state drive without thermal derating below 65 °C ambient |
| Junction capacitance | ≤50 pF at 0 V, 1 MHz - negligible impact on digital PWM dimming up to 100 kHz |
| Reverse voltage | 6 V - defines polarity protection margin against accidental reverse bias in manual wiring scenarios |
Pinout & Package
TLHR6401 is a two-terminal through-hole LED in standard 5 mm (T-1¾) tinted diffused plastic package with cathode-indicating flat side and 2.54 mm lead pitch. Package dimensions: 5.0 ±0.15 mm diameter lens, 8.7 ±0.3 mm total length, 5.8 ±0.15 mm body height, R2.49 spherical lens profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (longer lead) | Positive terminal | Connects to current source or microcontroller GPIO via current-limiting resistor; polarity must be observed to avoid damage |
| Cathode (shorter lead / flat side) | Negative terminal | Reference node for forward bias; identifies orientation during manual assembly and automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Wide viewing angle (±30°) | Enables consistent visibility across broad operator angles without mechanical aiming adjustments |
| Luminous intensity categorization | Ensures batch-to-batch brightness uniformity for multi-LED status arrays in control interfaces |
| Tinted diffused lens | Eliminates glare and provides soft, even illumination ideal for human-readable legend lighting |
| GaAsP-on-GaP chip technology | Delivers stable red output with low temperature coefficient and minimal wavelength shift over life |
| DC and high peak current capability | Supports both constant-current drive and PWM dimming up to 1 A pulses for strobe or attention-grabbing signals |
Applications
| Status Indicator | Legend Illumination |
|---|---|
|
Use Scenario: Front-panel LED on industrial PLC module indicating RUN/STOP state. IC Role / Device Role / Timing Role: Visual status emitter driven by microcontroller GPIO with series resistor. Use Value: High on-off contrast and ±30° viewing angle ensure immediate recognition by operators within 2 m distance. |
Use Scenario: Backlighting engraved labels on medical device control bezel. IC Role / Device Role / Timing Role: Constant-current DC-driven red LED behind translucent polycarbonate overlay. Use Value: Tinted diffused lens prevents hotspots and delivers uniform luminance across 10 mm × 3 mm legend area. |
| Readout Light | Maintenance Indicator |
|
Use Scenario: Illuminating analog meter scale in test equipment under variable ambient light. IC Role / Device Role / Timing Role: Steady 10 mA DC source providing calibrated brightness independent of supply ripple. Use Value: 4–12 mcd output at 10 mA matches photometric requirements for CIE 1931 luminance targets in Class II instruments. |
Use Scenario: Service-required alert on HVAC controller display during filter replacement cycle. IC Role / Device Role / Timing Role: Pulsed LED driven at 2 Hz with 10% duty cycle using MCU timer output. Use Value: Rated 1 A surge current capability allows robust flashing without degradation over 10⁵ cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar red LED indicator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLHR6405 | Higher luminous intensity (6.3–14 mcd at 10 mA); same package, wavelength, and VF range | Better suited for high-ambient-light environments (e.g., outdoor kiosks) where TLHR6401 may appear dim | Select TLHR6405 when >10 mcd minimum brightness is required; no PCB change needed |
| TLHR6400 | Lower luminous intensity (1.6–10 mcd at 10 mA); identical package, wavelength, and electrical specs | Preferred for low-power battery-operated devices where TLHR6401's 4–12 mcd exceeds visibility needs | Choose TLHR6400 to reduce power draw in energy-constrained designs without altering layout |
Compared with TLHR6401, TLHR6405 offers higher brightness for demanding visibility conditions while TLHR6400 reduces power consumption in low-duty-cycle indicators-both share identical footprint, drive characteristics, and thermal behavior, enabling direct substitution based on luminance requirement.
Availability
TLHR6401 is available at Aetrix Electronics and suitable for status lights, legend illumination, readout lights, and maintenance indicators requiring stable component supply, consistent color matching, and long-term obsolescence management.
Supply support for TLHR6401 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 leader in discrete semiconductors and passive components, specializing in high-reliability optoelectronics, power MOSFETs, and precision resistors for industrial and automotive markets.
The TLHR6401 belongs to Vishay's standard 5 mm LED product line, engineered for cost-effective, high-contrast visual indication in harsh-environment control systems and human-machine interfaces.
FAQ
What is the forward voltage range of TLHR6401 at 20 mA?
The TLHR6401 has a forward voltage range of 2 V to 3 V at 20 mA DC, measured per Vishay Document Number 83219. This range directly informs series resistor selection for 3.3 V or 5 V supply rails and ensures compatibility with standard GPIO drive capabilities. The TLHR6401's VF stability supports predictable current regulation without active feedback in simple indicator circuits.
Does TLHR6401 have a defined viewing angle, and how is it measured?
Yes, TLHR6401 has an angle of half intensity of ±30°, meaning luminous intensity drops to 50% of its peak value at 30° off-axis in both horizontal and vertical planes. This is measured at 10 mA per IESNA LM-79 methodology and confirms suitability for wide-angle panel indicators where operators view from multiple positions. The TLHR6401's diffused lens ensures smooth angular distribution without sharp cutoffs.
Is TLHR6401 RoHS-compliant and halogen-free?
Yes, TLHR6401 meets RoHS Directive 2011/65/EU and is halogen-free per Vishay's material categorization standard (Document Number 99912). Compliance is verified through certified lab testing of homogeneous materials, and the TLHR6401 carries appropriate environmental symbols on its packaging label-including Pb-free and RoHS markings-as confirmed in the official datasheet revision 2.5.
What is the maximum continuous forward current rating for TLHR6401?
The absolute maximum DC forward current for TLHR6401 is 30 mA at ambient temperatures ≤65 °C, as specified in the Absolute Maximum Ratings table (Document Number 83219). Exceeding this requires thermal derating above 65 °C ambient, and the TLHR6401's 350 K/W junction-to-ambient thermal resistance defines the allowable power dissipation envelope for sustained operation.
Can TLHR6401 be used in pulsed applications, and what is its surge current limit?
Yes, TLHR6401 supports pulsed operation with a surge forward current rating of 1 A for pulse widths ≤10 μs, enabling strobe, blink, or attention-capture functions without degradation. This capability is validated under transient conditions and applies to the TLHR6401 regardless of ambient temperature, making it suitable for time-multiplexed displays or fault-alert signaling where peak brightness matters more than average intensity.
TLHR6401 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- -
- Package/Case:
- Radial
- Packaging:
- Bulk
- Product Status:
- Active
- Color:
- Red
- Configuration:
- Standard
- Lens Color:
- -
- Lens Transparency:
- Diffused
- Millicandela Rating:
- 12mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 5mm, T-1 3/4
- Voltage - Forward (Vf) (Typ):
- 2V
- Current - Test:
- 10mA
- Viewing Angle:
- 60°
- Mounting Type:
- Through Hole
- Wavelength - Dominant:
- 619nm
- Wavelength - Peak:
- 635nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- T-1 3/4
- Size / Dimension:
- -
TLHR6401 FAQ
1.How can I place an order for TLHR6401 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLHR6401 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 TLHR6401 reliable?
The price and inventory of TLHR6401 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLHR6401 is usually 5 days.
3.What payment methods are accepted for TLHR6401?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLHR6401 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLHR6401?
TLHR6401 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLHR6401 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 TLHR6401?
For technical support, including TLHR6401 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLHR6401 requirements.
6.How does Aetrix verify that TLHR6401 is sourced from the original manufacturer or authorized distributors?
All TLHR6401 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 TLHR6401 meets industry standards.
7.What is the process for return or replacement of TLHR6401?
All TLHR6401 units undergo pre-shipment inspection (PSI). If there is an issue with TLHR6401, 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 TLHR6401 part is unused and in its original packaging.
Return procedure for TLHR6401:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLHR6401 Tags
-
LTST-C281KRKT
Lite-On Inc.
-
150060GS75000
Würth Elektronik
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150060VS75000
Würth Elektronik
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150060AS75000
Würth Elektronik
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150060YS75000
Würth Elektronik
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150060SS75000
Würth Elektronik
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150060BS75000
Würth Elektronik
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151031VS06000
Würth Elektronik
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151033RS03000
Würth Elektronik
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150080BS75000
Würth Elektronik
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150080GS75000
Würth Elektronik
-
150141GS73100
Würth Elektronik
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