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Vishay Semiconductor Opto Division VLMR31R2T1-34-GS18
- Part No.:
- VLMR31R2T1-34-GS18
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- 2-SMD, J-Lead
- Datasheet:
-
VLMR31R2T1-34-GS18.pdf
- Description:
- LED AMBER CLEAR 2PLCC SMD
- Quantity:
- Payment:
- Shipping:
Inventory:3,832
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Product details
Overview
VLMR31R2T1-34-GS18 from Vishay Semiconductors is an orange-red AlInGaP-on-GaAs surface-mount LED in PLCC-2 package, delivering 160 mcd typical luminous intensity at 20 mA, with dominant wavelength 618 nm and forward voltage 2.0 V - optimized for automotive dashboard backlighting and indicator applications.
For engineers reviewing the VLMR31R2T1-34-GS18 datasheet, VLMR31R2T1-34-GS18 pinout, VLMR31R2T1-34-GS18 application, or VLMR31R2T1-34-GS18 equivalent, key selection criteria include luminous intensity binning (T group), ±60° viewing angle, AEC-Q101 qualification, JEDEC level 2a preconditioning, and compatibility with IR reflow per J-STD-020.
Technical Context
This device uses AlInGaP on GaAs epitaxial technology to achieve high-brightness orange-red emission with narrow dominant wavelength range (612–624 nm) and low forward voltage (1.8–2.4 V at 20 mA). Its PLCC-2 package features a white thermoplastic body with clear epoxy lens and integrated reflector for directional light output.
Designed for automated SMT assembly, VLMR31R2T1-34-GS18 supports JEDEC-compliant reflow, vapor-phase, and wave soldering processes. It meets AEC-Q101 stress testing requirements and exhibits ESD withstand voltage up to 2 kV (HBM, JESD22-A114-B), with thermal resistance junction-to-ambient of 400 K/W when mounted on ≥16 mm² PCB pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Luminous intensity | 90–355 mcd at 20 mA - defines visible brightness level for human-perceivable indicators under standard test conditions |
| Dominant wavelength | 612–624 nm - specifies spectral peak location critical for color-matching in automotive and UI applications |
| Forward voltage | 1.8–2.4 V at 20 mA - determines driver circuit compliance voltage and power dissipation (max 48 mW at 2.4 V) |
| Viewing angle | ±60° - sets beam spread for uniform illumination across symbols, switches, or LCD segments |
| Junction temperature | 125 °C max - constrains maximum allowable ambient + self-heating in sealed enclosures or high-density layouts |
| ESD rating | 2 kV HBM - informs ESD protection design requirements during handling and board assembly |
| AEC-Q101 qualified | Yes - confirms suitability for automotive-grade reliability and lifetime validation per stress test protocols |
Pinout & Package
The VLMR31R2T1-34-GS18 is housed in a surface-mount PLCC-2 package with non-diffused lens, low-profile construction (height ≤ 2.2 mm), and white thermoplastic body embedding a lead frame and internal reflector filled with clear epoxy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive DC input | Connected to current-limiting resistor or constant-current driver; polarity must be observed to avoid reverse breakdown |
| Cathode (K) | Ground return path | Common reference for multiple LEDs in array; requires low-impedance PCB trace to minimize voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| Luminous intensity ratio ≤ 1.6 per reel | Ensures consistent brightness across all units on a single tape reel, eliminating manual bin sorting in production |
| Non-diffused lens | Enables efficient coupling into light pipes and edge-lit LCD backlights without optical loss from diffusion layers |
| JEDEC level 2a preconditioning | Guarantees moisture sensitivity level compatible with standard reflow profiles without baking prior to assembly |
| Low power consumption | Operates at 20 mA typical - reduces thermal load and enables use with low-current microcontroller GPIOs or simple resistive drivers |
| EIA/ICE standard package | Ensures mechanical compatibility with industry-standard pick-and-place nozzles and stencil apertures for PLCC-2 footprint |
Applications
| Automotive Dashboard Backlighting | Telecom Indicator Panels |
|---|---|
Use Scenario: Illuminating segmented symbols and analog gauge markings in vehicle instrument clusters under varying ambient lighting. IC Role / Device Role / Timing Role: Discrete light source driven by constant-current LED driver IC or MCU PWM output. Use Value: High luminous intensity (160 mcd typ.) and ±60° viewing angle ensure legibility at wide viewing angles and in direct sunlight. | Use Scenario: Status indication on telephone handsets, fax machines, and VoIP endpoint devices requiring long-life, low-power visual feedback. IC Role / Device Role / Timing Role: Standalone indicator element powered directly from system rail via current-limiting resistor. Use Value: AEC-Q101 qualification and 125 °C junction rating support reliable operation in enclosed telecom enclosures with elevated ambient temperatures. |
| Audio/Video Equipment UI | Office Equipment Switch Indicators |
Use Scenario: Power-on, mute, input-select, and playback status lights on AV receivers, soundbars, and media players. IC Role / Device Role / Timing Role: Direct-drive LED with MCU GPIO or dedicated LED driver IC providing PWM dimming control. Use Value: Orange-red chromaticity (618 nm dom.) delivers high contrast against black front panels and avoids blue-light fatigue in home environments. | Use Scenario: Tactile switch illumination on printers, scanners, and multifunction peripherals where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Low-profile PLCC-2 footprint allows placement adjacent to mechanical switches without height interference. Use Value: Non-diffused lens concentrates light toward user-facing surface, increasing perceived brightness without increasing drive current or power draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar orange-red LED applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VLMR31Q2T1-GS18 | Same package, same technology, identical optical specs - differs only in luminous intensity bin (Q group: 90–112 mcd vs. R group: 112–140 mcd) | Suitable where lower brightness suffices and cost sensitivity favors standard bin | Select VLMR31Q2T1-GS18 if brightness tolerance allows lower mcd range and BOM cost optimization is prioritized |
| LA T676-Q2T1-24 | OSRAM cross-reference with matching dominant wavelength (618 nm), ±60° viewing angle, and PLCC-2 package - forward voltage slightly higher (2.1 V typ.) | Valid alternative where multi-source procurement strategy requires second-source qualification | Choose LA T676-Q2T1-24 when dual-sourcing is mandated and minor VF shift is acceptable in driver design |
Compared with VLMR31R2T1-34-GS18, VLMR31Q2T1-GS18 offers lower luminous intensity but identical form-factor and reliability; LA T676-Q2T1-24 provides second-source assurance with minimal electrical deviation, supporting supply chain resilience without layout or thermal redesign.
Availability
VLMR31R2T1-34-GS18 is available at Aetrix Electronics and suitable for automotive dashboard backlighting, telecom indicator panels, audio/video equipment UI, and office equipment switch indicators requiring stable component supply and AEC-Q101-compliant performance.
Supply support for VLMR31R2T1-34-GS18 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, diodes, and precision resistors.
The VLMR31 series belongs to Vishay's high-intensity SMD LED product line, engineered specifically for automotive, industrial, and consumer indicator/backlight applications demanding AEC-Q101 qualification, tight binning control, and robust reflow compatibility.
FAQ
What is the luminous intensity bin for VLMR31R2T1-34-GS18?
VLMR31R2T1-34-GS18 is categorized in the R luminous intensity group (112–140 mcd at 20 mA), with typical value 160 mcd - confirming it falls within the upper half of the R bin. This binning ensures consistent brightness across reels, and each GS18 tape contains only one intensity group, avoiding mixed-brightness assemblies. The "T1" suffix denotes the specific intensity sub-bin within R.
Is VLMR31R2T1-34-GS18 qualified for automotive use?
Yes, VLMR31R2T1-34-GS18 is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and ESD (2 kV HBM). Its operating temperature range (−40 to +100 °C) and junction temperature limit (125 °C) meet automotive cabin and under-hood indicator requirements. The "34" in the part number indicates AEC-Q101 compliance per Vishay's internal coding.
What is the recommended soldering profile for VLMR31R2T1-34-GS18?
VLMR31R2T1-34-GS18 is compatible with lead-free reflow per J-STD-020, with peak temperature ≤ 260 °C for ≤ 10 s, time above 217 °C ≤ 30 s, and ramp rates ≤ 3 °C/s (up) and ≤ 6 °C/s (down). It also supports vapor-phase and wave soldering per CECC 00802. Preconditioning to JEDEC level 2a eliminates need for baking before reflow when stored properly.
Does VLMR31R2T1-34-GS18 have a diffused or non-diffused lens?
VLMR31R2T1-34-GS18 features a non-diffused lens, as confirmed in the Vishay datasheet under FEATURES ("Non-diffused lens: excellent for coupling to light pipes and backlighting"). This design maximizes light directionality and coupling efficiency into light guides or edge-lit LCD backlights, distinguishing it from diffused variants intended for wide-angle indicator use.
What does the "GS18" suffix mean in VLMR31R2T1-34-GS18?
The "GS18" suffix indicates an 8 mm antistatic blister tape packaging option containing 8000 pieces per reel - Vishay's preferred tape configuration for high-volume SMT assembly. It includes JEDEC level 2a moisture sensitivity labeling, dry-packing in aluminum barrier bags, and bar code labeling per Vishay standard (type group, bin codes, date, batch, quantity).
VLMR31R2T1-34-GS18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- VLM3
- Package/Case:
- 2-SMD, J-Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Color:
- Amber
- Configuration:
- Standard
- Lens Color:
- -
- Lens Transparency:
- Clear
- Millicandela Rating:
- 248mcd
- Lens Style:
- Round with Flat Top
- Lens Size:
- 2.40mm Dia
- Voltage - Forward (Vf) (Typ):
- 2V
- Current - Test:
- 20mA
- Viewing Angle:
- 120°
- Mounting Type:
- Surface Mount
- Wavelength - Dominant:
- 620nm
- Wavelength - Peak:
- 624nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 2-PLCC
- Size / Dimension:
- 3.00mm L x 2.80mm W
VLMR31R2T1-34-GS18 FAQ
1.How can I place an order for VLMR31R2T1-34-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VLMR31R2T1-34-GS18 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 VLMR31R2T1-34-GS18 reliable?
The price and inventory of VLMR31R2T1-34-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VLMR31R2T1-34-GS18 is usually 5 days.
3.What payment methods are accepted for VLMR31R2T1-34-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VLMR31R2T1-34-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VLMR31R2T1-34-GS18?
VLMR31R2T1-34-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VLMR31R2T1-34-GS18 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 VLMR31R2T1-34-GS18?
For technical support, including VLMR31R2T1-34-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VLMR31R2T1-34-GS18 requirements.
6.How does Aetrix verify that VLMR31R2T1-34-GS18 is sourced from the original manufacturer or authorized distributors?
All VLMR31R2T1-34-GS18 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 VLMR31R2T1-34-GS18 meets industry standards.
7.What is the process for return or replacement of VLMR31R2T1-34-GS18?
All VLMR31R2T1-34-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with VLMR31R2T1-34-GS18, 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 VLMR31R2T1-34-GS18 part is unused and in its original packaging.
Return procedure for VLMR31R2T1-34-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VLMR31R2T1-34-GS18 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
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