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Vishay Semiconductor Opto Division TLHG4400
- Part No.:
- TLHG4400
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- Radial
- Datasheet:
-
TLHG4400.pdf
- Description:
- LED GREEN DIFFUSED T-1 T/H
- Quantity:
- Payment:
- Shipping:
Inventory:1,575
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Product details
Overview
TLHG4400 from Vishay Semiconductors is a green high-efficiency LED in a 3 mm tinted diffused plastic package (T-1), delivering 2.5–13 mcd luminous intensity at 10 mA, with dominant wavelength 562–575 nm and forward voltage 2.4–3.0 V at 20 mA. It serves as an on/off indicator or status light in industrial control panels and instrumentation.
For engineers reviewing the TLHG4400 datasheet, TLHG4400 pinout, TLHG4400 application, or TLHG4400 equivalent, key selection criteria include luminous intensity binning (N-group), ±30° viewing angle, DC/high-peak-current capability, GaP-on-GaP chip technology, and compatibility with standard 3 mm through-hole mounting.
Technical Context
The TLHG4400 uses a GaP-on-GaP semiconductor structure optimized for visible green emission, with peak wavelength centered near 565 nm. Its tinted diffused lens ensures uniform angular intensity distribution and high on-off contrast.
Rated for continuous DC operation and pulsed currents up to 1 A (10 μs), it operates across –40 °C to +100 °C ambient and features 400 K/W junction-to-ambient thermal resistance. The device is binned by both luminous intensity (N group: 2.5–5 mcd) and dominant wavelength (groups 3–8 per spec).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Color | Green - meets visual identification requirements for safety-critical status indication |
| Luminous intensity | 2.5–13 mcd at 10 mA - N-group binning enables consistent brightness matching within assemblies |
| Dominant wavelength | 562–575 nm - supports color-coded UI compliance in industrial HMI applications |
| Viewing angle | ±30° half-intensity - provides wide visibility without hot-spotting in panel-mounted indicators |
| Forward voltage | 2.4–3.0 V at 20 mA - compatible with standard 3.3 V and 5 V logic-level drive circuits |
| Absolute max forward current | 30 mA DC - allows direct microcontroller GPIO driving with minimal series resistance |
| Junction temperature limit | 100 °C - supports reliable operation in sealed enclosures with limited airflow |
Pinout & Package
TLHG4400 is a two-terminal through-hole LED in a standard Ø 3 mm (T-1) tinted diffused plastic package with axial leads. Cathode is identified by shorter lead and flat edge on housing per Vishay mechanical drawing 6.544-5255.01-4.
| 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) | Negative terminal | Typically tied to ground or low-side switch; flat housing edge aligns with cathode marking |
Key Features
| Feature | Design Value |
|---|---|
| Standard Ø 3 mm (T-1) package | Enables drop-in replacement in legacy indicator designs and compatibility with automated insertion equipment |
| Luminous intensity categorization (N group) | Ensures batch-to-batch brightness uniformity for multi-LED status arrays without manual sorting |
| Wavelength categorization (green groups 3–8) | Guarantees consistent hue across production lots for color-coded system feedback |
| Wide ±30° viewing angle | Eliminates need for secondary optics in front-panel indicators, reducing BOM and assembly cost |
| DC and high-peak-current capability | Supports both steady-state illumination and multiplexed scanning without derating or external drivers |
Applications
| Status Indicator | Instrumentation Readout |
|---|---|
Use Scenario: Front-panel LED on programmable logic controller (PLC) module indicating RUN/STOP state. IC Role / Device Role / Timing Role: Visual status emitter - no timing function; driven statically or via PWM at ≤1 kHz. Use Value: High on-off contrast and wide viewing angle ensure clear visibility across operator positions without glare. |
Use Scenario: Numeric display backlight or digit separator in handheld multimeter. IC Role / Device Role / Timing Role: Constant-current illuminated element - no signal processing or timing role. Use Value: N-group intensity binning prevents mismatched brightness between adjacent digits under identical drive conditions. |
| Maintenance Access Light | Legend Illumination |
Use Scenario: Edge-lit label beside service port on telecom rack unit. IC Role / Device Role / Timing Role: Low-power ambient illumination source - operates continuously at 10 mA. Use Value: Tinted diffused lens delivers even, non-dazzling light ideal for close-proximity maintenance tasks. |
Use Scenario: Backlight for engraved membrane switch legend on medical device control panel. IC Role / Device Role / Timing Role: Steady-state optical source - no modulation or data encoding required. Use Value: 562–575 nm dominant wavelength provides optimal contrast against white or yellow legend markings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar green LED indicator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLHG4401 | Higher luminous intensity (4–14 mcd, M-group binning); otherwise identical package, wavelength, and electrical specs | Better suited for applications requiring higher brightness in ambient-lit environments | Select TLHG4401 when >13 mcd output is needed; TLHG4400 remains optimal for power-constrained or glare-sensitive use cases |
| TLHG4405 | Further increased intensity (6.3–15 mcd, P-group); same footprint, VF, and thermal ratings | Targeted at outdoor-facing or high-brightness panel applications where visibility exceeds indoor requirements | Choose TLHG4405 only if N-group intensity proves insufficient; verify thermal margin at 20 mA continuous drive |
Compared with TLHG4401 and TLHG4405, the TLHG4400 offers the lowest intensity tier in the TLHG440x green family-making it ideal for low-power, glare-controlled, or cost-optimized indicator designs where precise brightness matching (N group) is prioritized over maximum output.
Availability
TLHG4400 is available at Aetrix Electronics and suitable for industrial control panels, test equipment readouts, and medical device status indicators requiring stable component supply and long-term manufacturing continuity.
Supply support for TLHG4400 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 TLHG4400 belongs to Vishay's TLH.44.. series of standard 3 mm LEDs, designed specifically for general-purpose indicating and lighting in industrial, instrumentation, and consumer interfaces where mechanical robustness and visual consistency are critical.
FAQ
What is the luminous intensity range of the TLHG4400 at 10 mA?
The TLHG4400 has a luminous intensity range of 2.5–13 mcd at 10 mA, classified in the N-group per Vishay's binning specification. This range ensures consistent brightness across units shipped in the same packaging unit, with IVmin/IVmax ≤ 0.5 within each bag. The TLHG4400 is not rated for intensity beyond this specified range under standard test conditions.
Does the TLHG4400 have a built-in current-limiting resistor?
No, the TLHG4400 is a bare LED die in a 3 mm package with no integrated current-limiting resistor. External series resistance must be used to limit forward current to ≤30 mA DC or ≤1 A for 10 μs pulses. Typical design uses a 220 Ω resistor with 5 V supply or 100 Ω with 3.3 V supply to achieve ~10–20 mA drive.
What is the correct polarity orientation for TLHG4400 during PCB placement?
The TLHG4400 anode is the longer lead and corresponds to the side without the flat edge on the LED housing. The cathode is the shorter lead and aligns with the flat housing edge. Vishay specifies cathode-first tape orientation for part number TLHG4400-MS12, confirming cathode lead position in reel-fed assembly.
Can TLHG4400 be used in pulsed operation above 30 mA?
Yes - the TLHG4400 supports surge forward current up to 1 A for pulse widths ≤10 μs, provided duty cycle and average power remain within absolute maximum ratings. At 100 Hz repetition rate, peak current must be reduced to maintain average power ≤100 mW and junction temperature ≤100 °C. Pulse testing must follow Vishay's Fig. 2 characteristic curve.
Is TLHG4400 RoHS-compliant and halogen-free?
Yes, TLHG4400 complies with RoHS Directive 2011/65/EU and is halogen-free per Vishay's material categorization standard (document 99912). Full compliance documentation, including substance declarations and test reports, is available upon request from Vishay's quality portal or via Aetrix Electronics' technical support.
TLHG4400 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- TLH.44
- Package/Case:
- Radial
- Packaging:
- Bulk
- Product Status:
- Active
- Color:
- Green
- Configuration:
- Standard
- Lens Color:
- -
- Lens Transparency:
- Diffused
- Millicandela Rating:
- 13mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 3mm, T-1
- Voltage - Forward (Vf) (Typ):
- 2.4V
- Current - Test:
- 10mA
- Viewing Angle:
- 60°
- Mounting Type:
- Through Hole
- Wavelength - Dominant:
- 569nm
- Wavelength - Peak:
- 565nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- T-1
- Size / Dimension:
- -
TLHG4400 FAQ
1.How can I place an order for TLHG4400 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLHG4400 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 TLHG4400 reliable?
The price and inventory of TLHG4400 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLHG4400 is usually 5 days.
3.What payment methods are accepted for TLHG4400?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLHG4400 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLHG4400?
TLHG4400 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLHG4400 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 TLHG4400?
For technical support, including TLHG4400 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLHG4400 requirements.
6.How does Aetrix verify that TLHG4400 is sourced from the original manufacturer or authorized distributors?
All TLHG4400 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 TLHG4400 meets industry standards.
7.What is the process for return or replacement of TLHG4400?
All TLHG4400 units undergo pre-shipment inspection (PSI). If there is an issue with TLHG4400, 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 TLHG4400 part is unused and in its original packaging.
Return procedure for TLHG4400:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLHG4400 Tags
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