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Vishay Semiconductor Opto Division TLHR4405
- Part No.:
- TLHR4405
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- Radial
- Datasheet:
-
TLHR4405.pdf
- Description:
- LED RED DIFFUSED T-1 T/H
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
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Product details
Overview
TLHR4405 from Vishay Semiconductors is a red light-emitting diode (LED) in a standard Ø 3 mm tinted diffused plastic package, designed for status indication and panel lighting. It delivers 6.3–15 mcd luminous intensity at 10 mA, with dominant wavelength 612–625 nm, ±30° viewing angle, and forward voltage 2–3 V at 20 mA.
For engineers reviewing the TLHR4405 datasheet, TLHR4405 pinout, TLHR4405 application, or TLHR4405 equivalent, this device supports DC and pulsed operation up to 30 mA, offers tight luminous intensity binning (Q group), and is optimized for high on-off contrast in industrial control panels, instrumentation readouts, and maintenance lighting systems.
Technical Context
The TLHR4405 uses GaAsP-on-GaP epitaxial technology to achieve stable red emission with low thermal drift. Its ±30° half-intensity viewing angle ensures wide visibility without hot-spotting, while the tinted diffused lens enhances contrast in ambient-lit environments.
Rated for continuous operation from –40 °C to +100 °C and surge current up to 1 A (10 µs pulse), it supports both steady-state and high-duty-cycle indicator applications. Reverse voltage rating is 6 V, and junction-to-ambient thermal resistance is 400 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Luminous intensity | 6.3–15 mcd at 10 mA - defines brightness level for human-visible status indication under typical panel lighting conditions |
| Dominant wavelength | 612–625 nm - specifies red spectral output compatible with standard color-coding for power-on or fault states |
| Viewing angle | ±30° - enables uniform illumination across wide operator viewing zones without mechanical aiming |
| Forward voltage | 2–3 V at 20 mA - determines series resistor value for 5 V or 3.3 V logic-supplied indicator circuits |
| Absolute max forward current | 30 mA DC - sets upper limit for continuous drive without thermal degradation or luminance shift |
| Junction temperature | 100 °C - defines maximum allowable die temperature for reliable 10+ year operation in sealed enclosures |
| Package | Ø 3 mm (T-1) tinted diffused - standard through-hole footprint compatible with legacy PCB tooling and manual assembly |
Pinout & Package
TLHR4405 is a two-terminal through-hole LED in a standard Ø 3 mm (T-1) plastic package with axial leads. The cathode is identified by a flat edge on the lens housing and shorter lead; anode is longer lead. No internal circuitry - direct DC or pulsed current drive only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (longer lead) | Positive terminal | Connects to current-limiting resistor and supply rail; polarity must be observed to avoid reverse breakdown |
| Cathode (shorter lead, flat side) | Negative terminal | Typically tied to ground or sink driver; marking aligns with industry-standard LED orientation conventions |
Key Features
| Feature | Design Value |
|---|---|
| Standard Ø 3 mm (T-1) package | Ensures drop-in compatibility with existing 3 mm LED sockets, fixtures, and automated insertion equipment |
| Luminous intensity binning (Q group) | 6.3–12.5 mcd range guarantees consistent brightness across units in same reel - critical for uniform panel appearance |
| Tinted diffused lens | Provides high on-off contrast and eliminates glare - improves legibility in brightly lit industrial environments |
| Wide ±30° viewing angle | Supports multi-operator visibility without requiring precise mounting alignment or secondary optics |
| Suitable for DC and high peak current | Rated for 30 mA DC and 1 A surge (10 µs) - accommodates PWM dimming and transient-driven indicator circuits |
Applications
| Status Indicator Panels | Industrial Control Consoles |
|---|---|
Use Scenario: Front-panel LEDs on PLC I/O modules and HMI enclosures indicate power, communication, or fault states. IC Role / Device Role / Timing Role: Discrete visual indicator - no timing or signal processing; driven directly by microcontroller GPIO or discrete transistor switch. Use Value: High on-off contrast and wide viewing angle ensure clear status recognition by operators across varied angles and ambient lighting. |
Use Scenario: Annunciator lights on factory floor control cabinets show machine readiness, safety interlock status, or emergency stop activation. IC Role / Device Role / Timing Role: Passive optical output device - electrically simple, thermally robust, and immune to EMI-induced false triggering. Use Value: Rated for –40 °C to +100 °C operation and 30 mA DC drive enables reliable use in unconditioned industrial enclosures. |
| Test Equipment Readouts | Maintenance & Service Lighting |
Use Scenario: Brightness-matched LEDs on multimeter or oscilloscope front panels indicate range, battery, or function selection. IC Role / Device Role / Timing Role: Human-interface optical element - driven at fixed or PWM-modulated current; no data interface or intelligence. Use Value: Tight luminous intensity binning (Q group) ensures uniform brightness across multiple indicators on same instrument faceplate. |
Use Scenario: Portable diagnostic tools and service kits use LEDs for task lighting during field repairs of electrical panels or machinery. IC Role / Device Role / Timing Role: Low-power, high-visibility illumination source - operated from coin cell or rechargeable battery via simple resistor limiting. Use Value: 2–3 V forward voltage and 30 mA absolute max rating allow efficient operation from 3.3 V or 5 V portable supplies with minimal heat generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar red LED indicator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLHR4401 | Luminous intensity 2.5–14 mcd (M group) - ~58% lower typical output than TLHR4405 | Better suited for low-brightness, low-power, or space-constrained indicators where reduced current draw is prioritized | Select TLHR4401 when lower intensity suffices and tighter binning consistency is not required |
| TLHR4400 | Luminous intensity 1.6–13 mcd (L group) - ~58% lower typical output; wider intensity tolerance band | Appropriate for cost-sensitive, non-critical status indicators where brightness uniformity across units is less critical | Choose TLHR4400 for budget-driven designs where Q-group consistency and higher output are unnecessary |
Compared with TLHR4401 and TLHR4400, the TLHR4405 provides the highest luminous intensity in the TLHR440x family (Q group), enabling superior visibility in high-ambient-light settings and supporting longer LED trace lengths without brightness loss - making it optimal for mission-critical status indication where uniformity and legibility are design requirements.
Availability
TLHR4405 is available at Aetrix Electronics and suitable for industrial control panels, test equipment readouts, and maintenance lighting systems requiring stable component supply, long-term availability, and batch-to-batch luminous consistency.
Supply support for TLHR4405 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, specializing in high-reliability, application-optimized devices for industrial, automotive, and computing markets.
The TLHR4405 belongs to Vishay's standard Ø 3 mm LED product line, engineered specifically for general-purpose indicating and panel lighting where mechanical robustness, visual clarity, and production scalability are essential.
FAQ
What is the forward voltage range of TLHR4405 at 20 mA?
The TLHR4405 has a forward voltage range of 2 V to 3 V at 20 mA DC, per Vishay's datasheet (Document Number: 83006, Rev. 3.8). This range allows straightforward resistor-based biasing from common 3.3 V or 5 V supply rails while maintaining stable luminance and thermal performance in the TLHR4405.
Is TLHR4405 RoHS-compliant and halogen-free?
Yes, TLHR4405 complies with RoHS Directive 2011/65/EU and is halogen-free per Vishay's material categorization standards (see www.vishay.com/doc?99912). The device uses lead-free solderable leads and meets JEDEC J-STD-609A Class 1 for moisture sensitivity, supporting standard reflow and hand-soldering processes.
What does the "Q" in TLHR4405's luminous intensity group signify?
The "Q" designation indicates TLHR4405 is binned in the Q luminous intensity group (6.3–12.5 mcd), ensuring tight brightness matching within a single reel. This grouping enables consistent visual appearance across multiple TLHR4405 units mounted on the same PCB - critical for professional-grade instrumentation and control panels.
Can TLHR4405 be driven with PWM for brightness control?
Yes, TLHR4405 supports PWM dimming due to its suitability for high peak current (1 A surge, 10 µs pulse) and fast response time. When using PWM, maintain average current ≤30 mA and observe duty cycle limits shown in Figure 2 and Figure 6 of the TLHR4405 datasheet to prevent thermal overstress in the TLHR4405 junction.
What is the viewing angle specification for TLHR4405, and how is it measured?
The TLHR4405 has an angle of half intensity of ±30°, meaning luminous intensity drops to 50% of center-axis value at ±30° off-axis. This is measured at 10 mA DC under standard conditions (Tamb = 25 °C), per IESNA LM-79 methodology - confirming wide, uniform illumination ideal for operator-facing indicators in the TLHR4405 application space.
TLHR4405 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- TLH.44
- Package/Case:
- Radial
- Packaging:
- Bulk
- Product Status:
- Active
- Color:
- Red
- Configuration:
- Standard
- Lens Color:
- -
- Lens Transparency:
- Diffused
- Millicandela Rating:
- 15mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 3mm, T-1
- 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
- Size / Dimension:
- -
TLHR4405 FAQ
1.How can I place an order for TLHR4405 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLHR4405 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 TLHR4405 reliable?
The price and inventory of TLHR4405 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLHR4405 is usually 5 days.
3.What payment methods are accepted for TLHR4405?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLHR4405 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLHR4405?
TLHR4405 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLHR4405 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 TLHR4405?
For technical support, including TLHR4405 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLHR4405 requirements.
6.How does Aetrix verify that TLHR4405 is sourced from the original manufacturer or authorized distributors?
All TLHR4405 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 TLHR4405 meets industry standards.
7.What is the process for return or replacement of TLHR4405?
All TLHR4405 units undergo pre-shipment inspection (PSI). If there is an issue with TLHR4405, 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 TLHR4405 part is unused and in its original packaging.
Return procedure for TLHR4405:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLHR4405 Tags
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LTST-C281KRKT
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150060GS75000
Würth Elektronik
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151031VS06000
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150141GS73100
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