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Vishay Semiconductor Opto Division VLRE31R1S2-GS18
- Part No.:
- VLRE31R1S2-GS18
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- 2-SMD, Z-Bend
- Datasheet:
-
VLRE31R1S2-GS18.pdf
- Description:
- LED YELLOW CLEAR SMD BOTTOM ENT
- Quantity:
- Payment:
- Shipping:
Inventory:2,147
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Product details
Overview
VLRE31R1S2-GS18 from Vishay Semiconductors is a yellow surface-mount LED using AlInGaP-on-GaAs technology, designed for top-down emission through PCBs in backlighting and indicator applications. It delivers luminous intensity of 112–285 mcd at 20 mA, with dominant wavelength 582–594 nm, forward voltage 2.1–2.3 V, and ±60° viewing angle.
For engineers reviewing the VLRE31R1S2-GS18 datasheet, VLRE31R1S2-GS18 pinout, VLRE31R1S2-GS18 application, or VLRE31R1S2-GS18 equivalent, this page provides verified optical, electrical, thermal, and packaging data - including AEC-Q101 qualification, JEDEC Level 2 preconditioning, and IR reflow compatibility - to support automotive dashboard, office equipment, and LCD backlight design decisions.
Technical Context
This reverse gullwing SMD LED uses AlInGaP-on-GaAs die mounted top-down in a white thermoplastic package with clear epoxy lens and internal reflector. Its non-diffused lens enables efficient coupling to light pipes and flat backlight assemblies.
It operates within -40 °C to +100 °C ambient temperature, supports 30 mA DC forward current and 1 A surge current, and exhibits 400 K/W junction-to-ambient thermal resistance when mounted on ≥16 mm² PCB pad area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Luminous intensity | 112–285 mcd at 20 mA: defines brightness range per bin group for consistent visual output in indicators |
| Dominant wavelength | 582–594 nm: specifies yellow chromaticity suitable for automotive dashboards and symbol illumination |
| Forward voltage | 2.1–2.3 V at 20 mA: determines series resistor selection and power budget in low-voltage indicator circuits |
| Viewing angle | ±60° half-intensity: enables wide-angle visibility without secondary optics in panel-mounted indicators |
| Junction capacitance | 15 pF at 0 V, 1 MHz: impacts high-frequency PWM dimming response and signal integrity in fast-switching drivers |
| ESD withstand | 2 kV HBM per JESD22-A114-B: informs ESD handling requirements during assembly and field operation |
| AEC-Q101 qualified | Validated for automotive-grade reliability: supports use in dashboard backlighting and switch illumination per ISO/TS 16949 |
Pinout & Package
Package: Reverse gullwing SMD (JEDEC-compliant), low-profile thermoplastic body with white reflector and clear epoxy lens. Dimensions per drawing 20859: length 3.2 mm, width 2.7 mm, height 1.8 mm, lead pitch 2.54 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive LED terminal | Connected to current-limiting resistor or driver output; polarity must be observed to avoid reverse conduction |
| Cathode (K) | Negative LED terminal | Typically tied to ground or low-side switch; reverse voltage rating limited to 5 V per absolute max ratings |
Key Features
| Feature | Design Value |
|---|---|
| Top-down emission architecture | Enables direct PCB-integrated backlighting without secondary lenses or reflectors |
| Non-diffused lens | Maximizes coupling efficiency into light guides and edge-lit panels for uniform LCD backlighting |
| Luminous intensity ratio IVmax/IVmin > 1.6 | Ensures predictable brightness variation across reels, simplifying binning-aware design validation |
| IR reflow, vapor phase & wave solder compatible | Supports automated assembly per J-STD-020C and CECC 00802 without thermal damage |
| JEDEC Level 2 preconditioning | Guarantees moisture sensitivity compliance for standard SMT line integration without baking |
Applications
| Automotive Dashboard Backlighting | Office Equipment Indicator |
|---|---|
|
Use Scenario: Illuminating segmented symbols and analog gauge markings in vehicle instrument clusters. IC Role / Device Role / Timing Role: Light source driven by constant-current LED driver IC or microcontroller GPIO with current-limiting resistor. Use Value: AEC-Q101 qualification and -40 °C to +100 °C operating range ensure reliability under automotive thermal cycling and vibration. |
Use Scenario: Status indication for power-on, network activity, or paper jam in printers and multifunction devices. IC Role / Device Role / Timing Role: Discrete indicator element controlled by logic-level outputs or dedicated LED driver. Use Value: ±60° viewing angle and 112–285 mcd intensity provide clear visibility across wide operator angles without added optics. |
| LCD Edge-Lit Backlighting | Telecom Device Symbol Illumination |
|
Use Scenario: Coupling into light guide for thin-profile monochrome LCD displays in industrial HMIs. IC Role / Device Role / Timing Role: Primary light emitter positioned along LCD perimeter; driven by PWM for brightness control. Use Value: Non-diffused lens and top-down emission enable >85% coupling efficiency into acrylic light pipes, reducing LED count per display. |
Use Scenario: Backlighting keypad symbols and status LEDs in telephony handsets and fax machines. IC Role / Device Role / Timing Role: Low-power visible indicator powered directly from 3.3 V or 5 V rail via series resistor. Use Value: 2.1–2.3 V forward voltage and 30 mA max current allow direct drive from common supply rails with minimal power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar yellow SMD LED applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LYT776-R1S2 | OSRAM equivalent; same luminous intensity bin (R1), identical package outline and solder profile | No AEC-Q101 qualification stated; not validated for automotive temperature cycling | Select LYT776-R1S2 only for non-automotive industrial or consumer applications where qualification is not required |
| VLRE31R2S2-XY-GS18 | Higher typical luminous intensity (140–285 mcd vs. 112–285 mcd); tighter dominant wavelength bin (585–591 nm vs. 582–594 nm) | Better color consistency in multi-LED arrays; higher brightness may require driver adjustment | Choose VLRE31R2S2-XY-GS18 when tighter wavelength control or higher minimum brightness is critical for visual matching |
Compared with VLRE31R1S2-GS18, LYT776-R1S2 offers mechanical compatibility but lacks automotive qualification, while VLRE31R2S2-XY-GS18 provides improved photometric consistency at the cost of reduced bin availability and potentially higher unit cost.
Availability
VLRE31R1S2-GS18 is available at Aetrix Electronics and suitable for automotive dashboard backlighting, office equipment indicators, and LCD edge-lit backlighting requiring stable component supply and traceable sourcing.
Supply support for VLRE31R1S2-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 manufacturer of discrete semiconductors and passive components, specializing in high-reliability optoelectronics, power MOSFETs, and precision resistors.
The VLRE31R1S2-GS18 belongs to Vishay's standard AlInGaP yellow LED product series, engineered for high-brightness, low-profile SMD indicator and backlighting applications in automotive, telecom, and office equipment.
FAQ
What is the maximum continuous forward current for VLRE31R1S2-GS18?
The absolute maximum DC forward current for VLRE31R1S2-GS18 is 30 mA at ambient temperatures ≤85 °C. Exceeding this value risks accelerated degradation and thermal runaway. For reliable long-term operation, Vishay recommends derating to 20 mA in most applications, which aligns with the specified luminous intensity and forward voltage test conditions. The VLRE31R1S2-GS18 datasheet confirms this rating under Absolute Maximum Ratings on page 2.
Is VLRE31R1S2-GS18 qualified for automotive use?
Yes, VLRE31R1S2-GS18 is AEC-Q101 qualified, confirming its suitability for automotive applications such as dashboard backlighting and switch illumination. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD robustness. The VLRE31R1S2-GS18 meets these requirements as documented in the Vishay datasheet revision 1.8, section "Features" and "Absolute Maximum Ratings".
What does the "GS18" suffix indicate in VLRE31R1S2-GS18?
The "GS18" suffix denotes the tape-and-reel packaging configuration: 8000 units per 180 mm diameter reel, compliant with EIA-481 standards. This differs from GS08 (2000 units per 180 mm reel). The GS18 format supports high-volume automated placement and is referenced in the "Taping Dimensions" section of the VLRE31R1S2-GS18 datasheet on page 4.
Can VLRE31R1S2-GS18 be used with standard lead-free reflow processes?
Yes, VLRE31R1S2-GS18 is compatible with lead-free IR reflow soldering per J-STD-020C, supporting peak temperatures up to 260 °C for ≤10 s. The recommended profile includes ramp rates ≤3 °C/s (up) and ≤6 °C/s (down), with 217 °C liquidus hold time ≤30 s. This is confirmed in Figure 9 of the VLRE31R1S2-GS18 datasheet and under "Features".
What is the luminous intensity binning structure for VLRE31R1S2-GS18?
VLRE31R1S2-GS18 is categorized in the "R" luminous intensity group, with minimum 112 mcd and maximum 140 mcd at 20 mA. Each reel contains only one brightness bin - no mixing - ensuring consistent optical output across production lots. This binning is defined in the "Luminous Intensity Classification" table on page 2 of the VLRE31R1S2-GS18 datasheet.
VLRE31R1S2-GS18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- -
- Package/Case:
- 2-SMD, Z-Bend
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Color:
- Yellow
- Configuration:
- Standard
- Lens Color:
- -
- Lens Transparency:
- Clear
- Millicandela Rating:
- 199mcd
- Lens Style:
- Round with Flat Top
- Lens Size:
- 2.40mm Dia
- Voltage - Forward (Vf) (Typ):
- 2.1V
- Current - Test:
- 20mA
- Viewing Angle:
- 120°
- Mounting Type:
- Surface Mount, Bottom Entry
- Wavelength - Dominant:
- 588nm
- Wavelength - Peak:
- 590nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SMD
- Size / Dimension:
- 3.20mm L x 2.80mm W
VLRE31R1S2-GS18 FAQ
1.How can I place an order for VLRE31R1S2-GS18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VLRE31R1S2-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 VLRE31R1S2-GS18 reliable?
The price and inventory of VLRE31R1S2-GS18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VLRE31R1S2-GS18 is usually 5 days.
3.What payment methods are accepted for VLRE31R1S2-GS18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VLRE31R1S2-GS18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VLRE31R1S2-GS18?
VLRE31R1S2-GS18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VLRE31R1S2-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 VLRE31R1S2-GS18?
For technical support, including VLRE31R1S2-GS18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VLRE31R1S2-GS18 requirements.
6.How does Aetrix verify that VLRE31R1S2-GS18 is sourced from the original manufacturer or authorized distributors?
All VLRE31R1S2-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 VLRE31R1S2-GS18 meets industry standards.
7.What is the process for return or replacement of VLRE31R1S2-GS18?
All VLRE31R1S2-GS18 units undergo pre-shipment inspection (PSI). If there is an issue with VLRE31R1S2-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 VLRE31R1S2-GS18 part is unused and in its original packaging.
Return procedure for VLRE31R1S2-GS18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VLRE31R1S2-GS18 Tags
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LTST-C281KRKT
Lite-On Inc.
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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
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150141GS73100
Würth Elektronik
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