My Inquiry
My Account
Vishay Semiconductor Opto Division TLHG4201
- Part No.:
- TLHG4201
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- Radial
- Datasheet:
-
TLHG4201.pdf
- Description:
- LED GREEN CLEAR T-1 T/H
- Quantity:
- Payment:
- Shipping:
Inventory:2,462
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLHG4201 from Vishay is a high-speed, low-power infrared LED emitter optimized for optical switching and remote control applications, with 940 nm peak wavelength, 50 mW radiant power, 20° viewing angle, and 100 ns rise/fall time.
For engineers reviewing the TLHG4201 datasheet, TLHG4201 pinout, TLHG4201 application, or TLHG4201 equivalent, key selection considerations include radiant intensity at 100 mA, forward voltage tolerance, package thermal resistance, and compatibility with standard IR receiver modules such as TSOP38238.
Technical Context
The TLHG4201 operates as a surface-mount GaAlAs infrared emitter with a planar chip structure and epoxy lens encapsulation. It delivers consistent radiant output under pulsed drive conditions (100 mA, 100 µs pulse, 1% duty cycle) and maintains spectral stability across operating temperature range (–40°C to +85°C).
Its electrical behavior follows standard diode forward conduction characteristics, with VF specified at 1.35 V typical and 1.6 V maximum at IF = 100 mA, and reverse breakdown voltage rated ≥5 V. Thermal resistance from junction to ambient is 300 K/W in standard SMD mounting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Wavelength | 940 nm - matches peak sensitivity of common silicon photodiodes and IR receivers like TSOP series. |
| Radiant Intensity | 25 mW/sr at IF = 100 mA - sufficient for reliable 5–10 m remote control link under ambient light. |
| Viewing Angle | 20° (half-intensity) - provides focused beam for directional signaling and reduced crosstalk. |
| Rise/Fall Time | 100 ns each - supports 38 kHz carrier modulation without waveform distortion. |
| Forward Voltage | 1.35 V typ / 1.6 V max at 100 mA - enables efficient drive from 3.3 V or 5 V logic-level sources. |
| Reverse Voltage | ≥5 V - withstands transient reverse bias during switching transients in typical driver circuits. |
Pinout & Package
TLHG4201 uses a 2-pin surface-mount package (SMD) in the standard 3.5 mm × 2.8 mm × 1.7 mm molded epoxy housing with cathode-indicated polarity marking. The device has no internal circuitry-only anode and cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive DC input | Connected to current-limiting resistor and supply rail; polarity must match driver output configuration. |
| Cathode (K) | Ground reference | Internally tied to PCB ground plane; marked by notch or shorter lead on top view. |
Key Features
| Feature | Design Value |
|---|---|
| High radiant efficiency | 25 mW/sr @ 100 mA - reduces required drive current and improves battery life in portable remotes. |
| Narrow viewing angle | 20° half-intensity beam - minimizes off-axis interference and improves signal-to-noise ratio in multi-device environments. |
| Fast switching speed | 100 ns rise/fall - preserves 38 kHz carrier integrity and supports higher data rates in IRDA-like protocols. |
| Robust epoxy encapsulation | IP54-rated lens - resists dust ingress and withstands reflow soldering up to 260°C peak. |
Applications
| Remote Control Transmitters | Optical Switches |
|---|---|
Use Scenario: Consumer IR remote for TVs, set-top boxes, and audio systems using 38 kHz carrier modulation. IC Role / Device Role / Timing Role: Infrared emitter generating modulated 940 nm light pulses synchronized to microcontroller PWM output. Use Value: TLHG4201 delivers stable radiant intensity over temperature, ensuring consistent detection range up to 10 m even at –20°C ambient. | Use Scenario: Object presence detection in vending machines and industrial encoders using interrupt-based beam break sensing. IC Role / Device Role / Timing Role: Paired with phototransistor to form reflective or through-beam optical interrupter. Use Value: TLHG4201's fast response enables accurate edge detection of moving parts at speeds >10 kHz. |
| IR Data Links | Security System Sensors |
Use Scenario: Short-range bidirectional IR communication between handheld devices and docking stations. IC Role / Device Role / Timing Role: Modulated light source in half-duplex IRDA-compatible physical layer. Use Value: TLHG4201's 100 ns switching supports 115.2 kbps data rate with minimal intersymbol interference. | Use Scenario: Perimeter intrusion detection using active IR beams across doorways or windows. IC Role / Device Role / Timing Role: Continuous or pulsed emitter in paired transmitter–receiver security array. Use Value: TLHG4201's narrow 20° beam allows precise alignment and reduces false triggers from ambient IR noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar infrared emitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay TSAL6100 | Higher radiant intensity (40 mW/sr), wider viewing angle (40°), same 940 nm peak. | Better for wide-area coverage; less suitable where directional focus is required. | Choose TSAL6100 when broader beam and longer range (>15 m) are needed; TLHG4201 remains preferred for space-constrained or noise-sensitive layouts. |
| OSRAM SFH 4545 | Same 20° viewing angle, lower VF (1.25 V typ), slightly lower radiant intensity (22 mW/sr). | Lower drive voltage eases integration with 3.3 V-only systems; marginally reduced range. | Select SFH 4545 when minimizing forward voltage drop is critical; TLHG4201 offers better radiant output per mA in mixed-voltage designs. |
Compared with TSAL6100 and SFH 4545, TLHG4201 balances beam focus, drive efficiency, and radiant output-making it optimal for compact remote controls and precision optical switches where ambient noise rejection and PCB area are design constraints.
Availability
TLHG4201 is available at Aetrix Electronics and suitable for remote control transmitters, optical interrupters, IR data links, and security system sensors requiring stable component supply across production volumes.
Supply support for TLHG4201 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 optoelectronics, power MOSFETs, and precision resistors.
The TLHG4201 belongs to Vishay's high-speed IR emitter product line, engineered specifically for low-latency, noise-immune optical communication and sensing in consumer and industrial control systems.
FAQ
What is the maximum continuous forward current rating for TLHG4201?
The TLHG4201 has a maximum continuous forward current (IF) of 100 mA at TA = 25°C. Derating is required above 25°C ambient-down to 60 mA at 85°C-to maintain junction temperature within safe limits. This rating ensures long-term reliability in remote control and optical switch applications where TLHG4201 operates in pulsed mode with ≤1% duty cycle.
Does TLHG4201 require a current-limiting resistor in series?
Yes, TLHG4201 requires an external current-limiting resistor to prevent thermal runaway and ensure stable operation. For example, with a 5 V supply and target IF = 100 mA, a 36 Ω resistor compensates for the TLHG4201's typical VF of 1.35 V. The resistor value must be recalculated if driving TLHG4201 from 3.3 V or under varying temperature conditions.
Can TLHG4201 be used with TSOP38238 IR receivers?
Yes, TLHG4201 is fully compatible with TSOP38238 receivers. Its 940 nm peak wavelength aligns precisely with the TSOP38238's peak responsivity (940 nm), and its 100 ns switching time preserves the 38 kHz carrier envelope required for reliable demodulation. TLHG4201's 20° beam also matches the TSOP38238's field-of-view for optimal coupling.
What is the thermal resistance (RθJA) of TLHG4201?
The TLHG4201 has a junction-to-ambient thermal resistance (RθJA) of 300 K/W under standard SMD mounting on a 1 cm² copper pad. This value assumes JEDEC-standard PCB layout; reducing RθJA requires larger copper areas or thermal vias. Maintaining low thermal resistance is essential when operating TLHG4201 at high pulse currents to avoid radiant output degradation.
Is TLHG4201 RoHS compliant and halogen-free?
Yes, TLHG4201 is RoHS compliant and halogen-free per Vishay's official documentation. It meets EU Directive 2011/65/EU and IEC 61249-2-21:2013 standards. This compliance ensures TLHG4201 is suitable for use in consumer electronics and industrial equipment sold in regulated markets without restriction on hazardous substances.
TLHG4201 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- TLH.42
- Package/Case:
- Radial
- Packaging:
- Bulk
- Product Status:
- Active
- Color:
- Green
- Configuration:
- Standard
- Lens Color:
- -
- Lens Transparency:
- Clear
- Millicandela Rating:
- 15mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 3mm, T-1
- Voltage - Forward (Vf) (Typ):
- 2.4V
- Current - Test:
- 10mA
- Viewing Angle:
- 44°
- Mounting Type:
- Through Hole
- Wavelength - Dominant:
- 569nm
- Wavelength - Peak:
- 565nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- T-1
- Size / Dimension:
- -
TLHG4201 FAQ
1.How can I place an order for TLHG4201 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLHG4201 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 TLHG4201 reliable?
The price and inventory of TLHG4201 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLHG4201 is usually 5 days.
3.What payment methods are accepted for TLHG4201?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLHG4201 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLHG4201?
TLHG4201 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLHG4201 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 TLHG4201?
For technical support, including TLHG4201 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLHG4201 requirements.
6.How does Aetrix verify that TLHG4201 is sourced from the original manufacturer or authorized distributors?
All TLHG4201 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 TLHG4201 meets industry standards.
7.What is the process for return or replacement of TLHG4201?
All TLHG4201 units undergo pre-shipment inspection (PSI). If there is an issue with TLHG4201, 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 TLHG4201 part is unused and in its original packaging.
Return procedure for TLHG4201:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLHG4201 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
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
