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Vishay Semiconductor Opto Division VLDY1535R-08
- Part No.:
- VLDY1535R-08
- Manufacturer:
- Vishay Semiconductor Opto Division
- Category:
- LED Indication - Discrete
- Package:
- 2-SMD, Z-Bend
- Datasheet:
-
VLDY1535R-08.pdf
- Description:
- LED YELLOW CLEAR 2SMD BOTTOM ENT
- Quantity:
- Payment:
- Shipping:
Inventory:7,321
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Product details
Overview
VLDY1535R-08 from Vishay Semiconductors is a yellow surface-mount LED with dome lens, designed for high-brightness indicator and backlighting applications. It delivers 4500–14 000 mcd luminous intensity at 50 mA, features AlInGaP-on-Si chip technology, ±22° viewing angle, and operates with 1.9–2.7 V forward voltage.
For engineers reviewing the VLDY1535R-08 datasheet, VLDY1535R-08 pinout, VLDY1535R-08 application, or VLDY1535R-08 equivalent, this page provides verified optical/electrical specs, thermal derating curves, JEDEC level 2a moisture sensitivity data, gullwing/reverse gullwing package dimensions, and real-world use context for traffic signage, industrial indicators, and LCD backlighting.
Technical Context
The VLDY1535R-08 uses AlInGaP-on-Si die architecture to achieve high luminous intensity (up to 14 000 mcd) and stable yellow emission (583–595 nm dominant wavelength) under DC forward current up to 70 mA. Its ±22° half-intensity angle and 2.3 × 2.3 × 2.6 mm SMD dome lens package enable directional light output with minimal beam spread.
Thermal resistance is 325 K/W junction-to-ambient when mounted on ≥16 mm² PCB copper pad, supporting operation from –40 °C to +100 °C ambient. ESD withstand voltage reaches 2 kV (HBM, JESD22-A114-B), and it complies with J-STD-020 reflow profiles including peak temperature ≤260 °C for ≤100 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Luminous intensity | 4500–14 000 mcd @ 50 mA - enables high-visibility indication in ambient lighting up to 10 klux |
| Dominant wavelength | 583–595 nm - precise yellow chromaticity compliant with CIE 1931 color space for signaling |
| Forward voltage | 1.9–2.7 V @ 50 mA - compatible with 3.3 V and 5 V logic-level drive without external regulation |
| Viewing angle | ±22° half-intensity - focused beam ideal for discrete status indication and symbol illumination |
| Max DC forward current | 70 mA @ Tamb ≤ 60 °C - supports sustained brightness in compact thermal environments |
| Junction temperature | 125 °C max - defines upper thermal limit for reliability-critical automotive/industrial mounting |
| ESD rating | 2 kV HBM (JESD22-A114-B) - ensures robustness during automated SMT handling and board assembly |
Pinout & Package
Package: SMD dome lens, 2.3 × 2.3 × 2.6 mm footprint, available in gullwing (anode/cathode on same side) and reverse gullwing (anode/cathode on opposite sides) configurations per drawing 6.544-5408.01-4 and 6.544-5409.01-4. Exposed copper thermal pad enhances heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive DC input | Accepts forward current up to 70 mA; requires series resistor or constant-current driver for bias control |
| Cathode | Ground reference | Connected to PCB ground plane; serves as primary thermal path via exposed copper pad |
Key Features
| Feature | Design Value |
|---|---|
| AlInGaP-on-Si chip technology | Delivers high luminous flux (1.2 mlm/mcd ratio) and stable yellow output across temperature range |
| JEDEC level 2a moisture sensitivity | Enables standard SMT reflow without baking if used within 672 hours of dry-pack opening |
| Luminous intensity binning (FA group) | Ensures consistent brightness across reels-no mixing of intensity groups per reel |
| Wavelength binning (groups 5–6) | Guarantees tight 589–595 nm dominant wavelength control for color-critical signage |
| Reflow-compatible termination finish | Lead-free matte tin plating supports J-STD-020 profile with peak temp ≤260 °C and ramp rates ≤3 °C/s |
Applications
| Traffic Signal Indicators | Industrial Control Panel Status |
|---|---|
Use Scenario: Red/yellow/green signal modules in roadside cabinets requiring daylight-visible status feedback. IC Role / Device Role / Timing Role: Discrete visual indicator emitting standardized yellow chromaticity for stop-wait phases. Use Value: 14 000 mcd intensity and ±22° beam ensure legibility at >10 m distance under direct sunlight exposure. |
Use Scenario: Power-on, fault, or mode indicators on DIN-rail mounted PLC I/O modules. IC Role / Device Role / Timing Role: Standalone status emitter with no timing or logic function-driven directly by microcontroller GPIO. Use Value: 70 mA max current and -40 °C to +100 °C operating range support continuous operation in unventilated enclosures. |
| LCD Keypad Backlighting | Automotive Interior Symbols |
Use Scenario: Edge-lit alphanumeric keys on consumer audio/video remote controls. IC Role / Device Role / Timing Role: Low-profile surface-mount light source positioned beneath translucent keycaps. Use Value: 2.3 mm × 2.3 mm footprint and dome lens provide uniform illumination without hotspots or shadowing. |
Use Scenario: Illuminated HVAC or gear selector symbols in passenger vehicle dashboards. IC Role / Device Role / Timing Role: Ambient-light-adapted indicator driven by PWM dimming circuitry. Use Value: 2 kV ESD rating and 125 °C junction temperature withstand automotive ESD events and under-hood thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar yellow LED indicator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VLDY1535G-08 | Same package and optics, but green-emitting (525 nm typ.) with identical 4500–14 000 mcd intensity range | Used where color coding requires green instead of yellow (e.g., "ready" vs. "warning" states) | Select VLDY1535G-08 only when green chromaticity is required; otherwise VLDY1535R-08 maintains yellow compliance. |
| VLDR1535R-08 | Red-emitting (624 nm typ.), higher intensity (3550–11 200 mcd), same 2.3 × 2.3 mm package and ±22° viewing angle | Preferred for red-status applications like power-off or alarm indicators where yellow is not color-coded | Choose VLDR1535R-08 for red signaling; VLDY1535R-08 is mandatory where yellow is specified per ISO/SAE standards. |
Compared with VLDY1535G-08 and VLDR1535R-08, the VLDY1535R-08 uniquely satisfies yellow-specific signaling requirements-its 589 nm typical dominant wavelength and FA intensity binning ensure regulatory-compliant chromaticity and brightness consistency where green or red alternatives would fail color validation.
Availability
VLDY1535R-08 is available at Aetrix Electronics and suitable for traffic signal modules, industrial HMI panels, and automotive interior symbols requiring stable component supply, consistent luminous intensity binning, and JEDEC level 2a moisture-safe reflow compatibility.
Supply support for VLDY1535R-08 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 designs and manufactures discrete semiconductors and optoelectronics with emphasis on reliability, precision, and application-specific performance across automotive, industrial, and computing markets.
The VLDY1535R-08 belongs to Vishay's power LED product group, engineered for high-brightness surface-mount indicator and backlighting applications demanding stable chromaticity, wide temperature operation, and robust SMT manufacturability.
FAQ
What is the maximum allowable forward current for VLDY1535R-08 at 85 °C ambient temperature?
The VLDY1535R-08 supports 70 mA DC forward current only when ambient temperature is ≤60 °C. At 85 °C, derating applies: Fig. 1 shows maximum permissible current drops to ~45 mA. Exceeding this risks accelerated lumen depreciation and junction overheating beyond the 125 °C limit. Always consult the thermal resistance (325 K/W) and actual board copper area when designing for elevated temperatures. The VLDY1535R-08 must be operated within these limits to maintain rated lifetime.
Does VLDY1535R-08 have a built-in current-limiting resistor?
No, the VLDY1535R-08 is a bare LED die in an SMD package with no integrated current-limiting resistor. It requires an external series resistor or constant-current driver to regulate forward current to 50 mA (typical operating point) or up to 70 mA (absolute max at Tamb ≤ 60 °C). The VLDY1535R-08 forward voltage range of 1.9–2.7 V at 50 mA means resistor value must be calculated per actual VF measurement and supply voltage. Failure to include external current control will cause thermal runaway and premature failure of the VLDY1535R-08.
Is VLDY1535R-08 suitable for outdoor traffic signal applications?
Yes, the VLDY1535R-08 is explicitly designed for traffic signals and signs per its Applications section. Its 14 000 mcd max luminous intensity at 50 mA, ±22° viewing angle, and –40 °C to +100 °C operating range meet outdoor visibility and environmental durability requirements. The dome lens provides UV-stable optical coupling, and the AlInGaP-on-Si chip ensures low wavelength shift over temperature (Fig. 9 shows <10 nm drift from –40 °C to +100 °C). For full compliance, pair the VLDY1535R-08 with appropriate thermal management and IP-rated housing.
What does the "R" suffix in VLDY1535R-08 indicate?
The "R" in VLDY1535R-08 denotes reverse gullwing lead configuration-cathode and anode leads extend from opposite sides of the 2.3 × 2.3 mm body, enabling orthogonal PCB routing and improved mechanical stability during reflow. This contrasts with the "G" suffix (e.g., VLDY1535G-08), which indicates standard gullwing leads on the same side. Both variants share identical optical, electrical, and thermal specs; the "R" solely defines mechanical mounting orientation. The VLDY1535R-08 drawing number is 6.544-5409.01-4.
How is luminous intensity binned for VLDY1535R-08, and what does "FA" mean?
VLDY1535R-08 is binned into luminous intensity groups per Table "LUMINOUS INTENSITY CLASSIFICATION": "FA" corresponds to 7100–9000 mcd at 50 mA. Each reel ships only one intensity group-no mixing-and FA is one of six standard bins (CA through FA). This ensures brightness uniformity across production lots. The VLDY1535R-08 datasheet specifies that FA-group devices deliver predictable visual output in multi-LED arrays, critical for consistent panel appearance in HMI and signage. Binning tolerance is ±15 % per test condition.
VLDY1535R-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Semiconductor Opto Division
- Series:
- VLD.1535
- Package/Case:
- 2-SMD, Z-Bend
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Color:
- Yellow
- Configuration:
- Independent
- Lens Color:
- Colorless
- Lens Transparency:
- Clear
- Millicandela Rating:
- 8000mcd
- Lens Style:
- Round with Domed Top
- Lens Size:
- 1.80mm Dia
- Voltage - Forward (Vf) (Typ):
- 2.3V
- Current - Test:
- 50mA
- Viewing Angle:
- 44°
- Mounting Type:
- Surface Mount, Bottom Entry
- Wavelength - Dominant:
- 589nm
- Wavelength - Peak:
- 591nm
- Features:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 2-SMD
- Size / Dimension:
- 2.30mm L x 2.30mm W
VLDY1535R-08 FAQ
1.How can I place an order for VLDY1535R-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VLDY1535R-08 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 VLDY1535R-08 reliable?
The price and inventory of VLDY1535R-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VLDY1535R-08 is usually 5 days.
3.What payment methods are accepted for VLDY1535R-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VLDY1535R-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VLDY1535R-08?
VLDY1535R-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VLDY1535R-08 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 VLDY1535R-08?
For technical support, including VLDY1535R-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VLDY1535R-08 requirements.
6.How does Aetrix verify that VLDY1535R-08 is sourced from the original manufacturer or authorized distributors?
All VLDY1535R-08 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 VLDY1535R-08 meets industry standards.
7.What is the process for return or replacement of VLDY1535R-08?
All VLDY1535R-08 units undergo pre-shipment inspection (PSI). If there is an issue with VLDY1535R-08, 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 VLDY1535R-08 part is unused and in its original packaging.
Return procedure for VLDY1535R-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VLDY1535R-08 Tags
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