SMD LED 17-215/G6C-FN2P2B/3T Datasheet - Brilliant Yellow Green - 2.0x1.25x0.8mm - 2.35V Max - 60mW - English Technical Document

1. Product Overview

The 17-215/G6C-FN2P2B/3T is a surface-mount device (SMD) LED designed for high-density electronic assemblies. This component utilizes an AIGaInP (Aluminum Gallium Indium Phosphide) semiconductor chip to produce a Brilliant Yellow Green light output. Its primary advantage lies in its miniature footprint, which enables significant reductions in printed circuit board (PCB) size, increased component packing density, and ultimately contributes to the development of smaller and lighter end-user equipment. The device is supplied in industry-standard 8mm tape on 7-inch diameter reels, making it fully compatible with automated pick-and-place assembly equipment, thereby streamlining high-volume manufacturing processes.

The LED is classified as a mono-color type and is constructed using lead-free (Pb-free) materials. It complies with major international environmental and safety regulations, including the European Union's Restriction of Hazardous Substances (RoHS) directive, the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulation, and halogen-free standards (with Bromine <900 ppm, Chlorine <900 ppm, and their sum <1500 ppm). This compliance ensures its suitability for a wide range of global markets and applications with stringent material requirements.

2. In-Depth Technical Parameter Analysis

2.1 Absolute Maximum Ratings

The absolute maximum ratings define the stress limits beyond which permanent damage to the device may occur. These values are not intended for normal operation. For the 17-215 LED, the maximum continuous forward current (I_F) is rated at 25 mA. Under pulsed conditions with a duty cycle of 1/10 at 1 kHz, the peak forward current (I_FP) can reach 60 mA. The maximum permissible reverse voltage (V_R) is 5 V; it is critical to note that the device is not designed for operation in reverse bias, and this rating primarily applies to the reverse current (I_R) test condition. The total power dissipation (P_d) must not exceed 60 mW, calculated as the product of forward voltage and forward current. The device can withstand an electrostatic discharge (ESD) of 2000 V according to the Human Body Model (HBM). The operating temperature range (T_opr) is from -40°C to +85°C, while the storage temperature (T_stg) extends slightly to +90°C.

2.2 Electro-Optical Characteristics

The electro-optical performance is specified at a standard test condition of an ambient temperature (T_a) of 25°C and a forward current of 20 mA. The luminous intensity (I_v) has a typical range from 36.00 mcd to 72.00 mcd, with a specified tolerance of ±11%. The spatial distribution of light is characterized by a wide viewing angle (2θ_1/2) of 130 degrees, providing broad illumination. The spectral characteristics are defined by a peak wavelength (λ_p) of 575 nm and a dominant wavelength (λ_d) range from 570.00 nm to 574.50 nm (±1nm tolerance). The spectral bandwidth (Δλ) is approximately 20 nm. The forward voltage (V_F) typically ranges from 1.75 V to 2.35 V at 20 mA, with a tolerance of ±0.1 V. The reverse current (I_R) is guaranteed to be less than or equal to 10 μA when a reverse voltage of 5 V is applied.

3. Binning System Explanation

To ensure consistency in mass production, LEDs are sorted into bins based on key performance parameters. This allows designers to select components that meet specific application requirements for brightness, color, and electrical behavior.

3.1 Luminous Intensity Binning

Luminous intensity is categorized into three primary bins measured at I_F = 20 mA:

• Bin N2: 36.00 mcd (Min) to 45.00 mcd (Max)
• Bin P1: 45.00 mcd (Min) to 57.00 mcd (Max)
• Bin P2: 57.00 mcd (Min) to 72.00 mcd (Max)

The tolerance for luminous intensity within a bin is ±11%.

3.2 Dominant Wavelength Binning

The dominant wavelength, which correlates closely with perceived color, is divided into three bins:

• Bin CC2: 570.00 nm (Min) to 571.50 nm (Max)
• Bin CC3: 571.50 nm (Min) to 573.00 nm (Max)
• Bin CC4: 573.00 nm (Max) to 574.50 nm (Max)

The tolerance for dominant wavelength is ±1 nm.

3.3 Forward Voltage Binning

Forward voltage is sorted into three bins to aid in circuit design, particularly for current-limiting resistor calculation and power supply design:

• Bin 0: 1.75 V (Min) to 1.95 V (Max)
• Bin 1: 1.95 V (Min) to 2.15 V (Max)
• Bin 2: 2.15 V (Min) to 2.35 V (Max)

The tolerance for forward voltage is ±0.1 V.

4. Performance Curve Analysis

While the PDF indicates the presence of typical electro-optical characteristic curves on page 5, the specific graphs are not provided in the text content. Typically, such datasheets include curves illustrating the relationship between forward current and luminous intensity, forward voltage versus forward current, and the relative luminous intensity as a function of ambient temperature. These curves are essential for designers to understand the device's behavior under non-standard conditions. For instance, the luminous intensity typically decreases as the ambient temperature rises. The forward voltage also has a negative temperature coefficient, meaning it decreases slightly with increasing temperature. Designers should consult the graphical data to derate performance appropriately for their specific operating environment and to ensure stable current drive across the intended temperature range.

5. Mechanical and Package Information

5.1 Package Dimensions

The 17-215 SMD LED features a compact package. The key dimensions (in millimeters) are as follows, with a general tolerance of ±0.1 mm unless otherwise specified: The overall package length is 2.0 mm, the width is 1.25 mm, and the height is 0.8 mm. The device includes two anode/cathode terminals for electrical connection. Detailed dimensional drawings, including pad spacing, terminal size, and lens geometry, are provided in the datasheet to guide PCB land pattern design for optimal soldering and mechanical stability.

5.2 Polarity Identification

Correct polarity is crucial for LED operation. The datasheet's package drawing clearly indicates the anode and cathode terminals. Typically, one terminal may be marked or have a different shape (e.g., a notch or a chamfered corner) to facilitate visual identification during manual assembly or inspection. Designers must ensure the PCB footprint mirrors this polarity to prevent incorrect placement.

6. Soldering and Assembly Guidelines

6.1 Reflow Soldering Profile

The LED is compatible with infrared and vapor phase reflow soldering processes. For Pb-free soldering, a specific temperature profile must be followed:

• Pre-heating: Ramp from ambient to 150-200°C over 60-120 seconds.
• Soak/Reflow: Maintain above 217°C (liquidus temperature) for 60-150 seconds. The peak temperature must not exceed 260°C, and the time above 255°C must be limited to a maximum of 30 seconds.
• Cooling: The maximum cooling rate should not exceed 6°C per second.

It is strongly recommended that reflow soldering be performed no more than two times to prevent thermal stress damage to the LED package and internal wire bonds.

6.2 Hand Soldering

If hand soldering is unavoidable, extreme care must be taken. The soldering iron tip temperature should be below 350°C, and contact time with each terminal must not exceed 3 seconds. The soldering iron power should be 25W or less. A minimum interval of 2 seconds should be left between soldering each terminal. Using a double-head soldering iron for repair is suggested to minimize thermal stress, but repair after initial soldering is generally discouraged.

6.3 Storage and Moisture Sensitivity

The LEDs are packaged in moisture-resistant barrier bags with desiccant. The bag must not be opened until the components are ready for use. After opening:

• Unused LEDs should be stored at 30°C or less and 60% relative humidity (RH) or less.
• The "floor life" after opening the bag is 168 hours (7 days).
• If not used within this period, remaining LEDs must be re-bagged with desiccant.
• If the desiccant indicator has changed color or the exposure time is exceeded, a baking treatment of 60°C ±5°C for 24 hours is required before use.

7. Packaging and Ordering Information

7.1 Reel and Tape Specifications

The product is supplied in a standard "ammo pack" style carrier tape with a width of 8 mm, wound onto a 7-inch (178 mm) diameter reel. Each reel contains 3000 pieces. Detailed dimensions for the reel, carrier tape pockets, and cover tape are provided to ensure compatibility with automated feeders.

7.2 Label Explanation

The packaging label contains several key codes for traceability and specification:

• CPN: Customer's Product Number (as assigned by the buyer).
• P/N: Manufacturer's Product Number (17-215/G6C-FN2P2B/3T).
• QTY: Packing Quantity (e.g., 3000).
• CAT: Luminous Intensity Rank (e.g., N2, P1, P2).
• HUE: Chromaticity Coordinates & Dominant Wavelength Rank (e.g., CC2, CC3, CC4).
• REF: Forward Voltage Rank (e.g., 0, 1, 2).
• LOT No: Manufacturing Lot Number for traceability.

8. Application Recommendations

8.1 Typical Application Scenarios

The Brilliant Yellow Green color and compact size make this LED suitable for various indicator and backlighting functions:

• Automotive Interior: Backlighting for dashboard instruments, switches, and control panels.
• Telecommunications: Status indicators and keypad backlighting in telephones, fax machines, and other communication devices.
• Consumer Electronics: Flat backlighting for small LCD displays, switch illumination, and symbolic indicators.
• General Purpose Indication: Power status, mode selection, and alert indicators in a wide array of electronic equipment.

8.2 Critical Design Considerations

Current Limiting is Mandatory: LEDs are current-driven devices. An external current-limiting resistor must always be used in series with the LED. The value is calculated based on the supply voltage (V_supply), the LED's forward voltage (V_F from its bin), and the desired forward current (I_F, typically 20 mA or less). The formula is: R = (V_supply - V_F) / I_F. Without this resistor, even a small increase in supply voltage can cause a large, destructive increase in current.

Thermal Management: While the power dissipation is low, ensuring adequate PCB copper area around the LED pads can help dissipate heat, especially in high ambient temperature environments or when driven at the maximum continuous current. This helps maintain luminous output and longevity.

Application Restrictions: This standard commercial-grade LED is not specifically designed or qualified for high-reliability applications where failure could lead to safety risks. This includes, but is not limited to, military/aerospace systems, automotive safety-critical systems (e.g., brake lights, airbag indicators), and life-supporting medical equipment. For such applications, components with appropriate qualifications and reliability data should be sourced.

9. Technical Comparison and Differentiation

The primary differentiating factors of the 17-215 LED are its combination of a specific AIGaInP chip material yielding a Brilliant Yellow Green color, its very compact 2012 (2.0x1.25mm) footprint, and its compliance with modern environmental standards (Pb-free, Halogen-Free, RoHS, REACH). Compared to older through-hole or larger SMD LEDs, it enables significant miniaturization. Compared to other yellow-green LEDs, the AIGaInP technology typically offers higher luminous efficiency and better color stability over temperature and current variations than some alternative semiconductor materials used for similar colors. The wide 130-degree viewing angle is also a key feature for applications requiring broad, even illumination rather than a focused beam.

10. Frequently Asked Questions (FAQ)

Q1: What is the difference between peak wavelength (λp) and dominant wavelength (λd)?
A1: Peak wavelength is the wavelength at which the spectral power distribution is maximum. Dominant wavelength is the single wavelength of monochromatic light that matches the perceived color of the LED. For LEDs with a relatively narrow spectrum, they are often close, but λd is more relevant for color specification in applications.

Q2: Can I drive this LED without a current-limiting resistor if I use a constant voltage source set to the LED's forward voltage?
A2: No, this is not recommended and is likely to damage the LED. The forward voltage has a tolerance and a negative temperature coefficient. A slight variation in supply voltage or a rise in LED temperature can cause a significant and uncontrolled increase in current, leading to overheating and failure. Always use a series resistor or a dedicated constant-current driver.

Q3: Why is there a strict "floor life" after opening the moisture barrier bag?
A3: SMD components can absorb moisture from the atmosphere. During the high-temperature reflow soldering process, this trapped moisture can rapidly vaporize, creating internal pressure that may cause package cracking ("popcorning") or delamination, leading to failure. The floor life and baking procedures manage this moisture sensitivity level (MSL).

Q4: How do I interpret the bin codes (CAT, HUE, REF) when ordering?
A4: You can specify the exact bin codes you require based on your application's needs for brightness (CAT), color (HUE), and forward voltage (REF). Ordering tighter bins ensures greater consistency in your final product's appearance and electrical performance. If not specified, you will receive components from standard production bins.

11. Practical Design and Usage Examples

Example 1: Dashboard Switch Backlighting
In an automotive dashboard, multiple 17-215 LEDs can be placed behind translucent switch caps. A microcontroller GPIO pin, via a transistor, can supply power from the vehicle's 12V system. A series resistor is calculated for each LED. For example, using a 12V supply, a V_F of 2.1V (Bin 1), and a target I_F of 20mA: R = (12V - 2.1V) / 0.02A = 495 Ohms. A standard 510 Ohm resistor would be suitable, resulting in I_F ≈ 19.4 mA. The wide viewing angle ensures the switch is evenly lit.

Example 2: Status Indicator on a Network Device
For a "Link Active" indicator on a router, a single LED can be driven directly from a 3.3V logic signal. Using V_F = 1.9V (Bin 0) and I_F = 15 mA for reduced power and longer life: R = (3.3V - 1.9V) / 0.015A ≈ 93.3 Ohms. A 100 Ohm resistor would be used. The Brilliant Yellow Green color is highly visible and commonly associated with network activity.

12. Operating Principle Introduction

Light Emitting Diodes (LEDs) are semiconductor devices that emit light through a process called electroluminescence. The 17-215 LED uses an AIGaInP (Aluminum Gallium Indium Phosphide) compound semiconductor. When a forward voltage is applied across the p-n junction, electrons from the n-type region and holes from the p-type region are injected into the active region. When these charge carriers (electrons and holes) recombine, they release energy. In AIGaInP materials, this energy is released primarily as photons (light particles) with a wavelength corresponding to the bandgap energy of the semiconductor material. The specific composition of the Al, Ga, In, and P atoms is engineered to produce a bandgap that results in yellow-green light with a peak wavelength around 575 nm. The epoxy resin lens encapsulates the chip, protects it, and shapes the light output to achieve the desired 130-degree viewing angle.

13. Technology Trends and Developments

The general trend in SMD LED technology continues toward several key areas: Increased Efficiency: Ongoing material science and chip design improvements aim to produce more lumens per watt (lm/W), reducing power consumption for a given light output. Miniaturization: Packages continue to shrink (e.g., from 2012 to 1608, 1005 metric sizes) to support ever-smaller consumer electronics. Improved Color Rendering and Consistency: Advances in phosphor technology (for white LEDs) and epitaxial growth processes (for colored LEDs like AIGaInP) lead to tighter color bins and more stable performance over lifetime and temperature. Higher Reliability: Enhanced packaging materials and manufacturing processes are extending LED lifetimes and improving resistance to thermal and environmental stress. Integrated Solutions: There is a growing market for LEDs with built-in current-limiting resistors, protection diodes, or even driver ICs, simplifying circuit design. The 17-215 represents a mature, widely adopted package and technology that benefits from these ongoing industry-wide refinements in manufacturing yield and performance.