518 - Adafruit Through-Hole Component | Adafruit Industries
MPN： 518 ✓ 啟用中518 概覽
What is a hobbyist electronic component? A hobbyist component is a part designed for makers, educators, engineers, and students building prototypes, learning platforms, and small-scale projects. These components typically prioritize ease of use (through-hole or breadboard-friendly packages), accessibility (open documentation, tutorials), and affordability over automotive-grade reliability or industrial certifications. Adafruit specializes in this segment with breakout boards (Feather, ItsyBitsy, QT Py), sensors, displays, LEDs, and discrete components. The 518 MPN sits within this taxonomy as a catalog-line item rather than a high-volume industry standard part.
Key features of the 518 include its in-stock availability at LCSC Electronics, a tape-and-reel or cut-tape distribution chain compatible with prototyping, and Adafruit's typical open-documentation philosophy with publicly available pinouts and example code. Pricing is positioned for low-quantity prototype purchases (1-piece unit price $4.0848 as of 2026-10-11) rather than volume OEM production runs. The component is sourced through LCSC, a major Asian distributor, indicating primary manufacturing in East Asia with global distribution.
Technical depth: Adafruit's catalog numbering convention uses short numeric identifiers that map internally to part descriptions, package types, and BOM references. The LCSC listing for part number 518 confirms the component is active in distributor inventory, has assigned package markings, and ships with the standard LCSC documentation set including dimensional drawings and basic electrical ratings where applicable. Designers should always cross-reference the LCSC product detail page for the authoritative datasheet and BOM metadata.
Typical applications include maker/educational prototyping with Arduino, Raspberry Pi, CircuitPython, and MicroPython platforms; breadboard-based circuit experimentation; STEM classroom kits; small-batch product development; and hobbyist IoT/sensor projects. The component is suitable wherever Adafruit's documentation ecosystem provides reference designs and example firmware.
Design consideration: Because the MPN "518" alone does not disambiguate the underlying device function, the engineer must load the LCSC product page (linked below) to confirm the device type, pinout, electrical ratings, and recommended operating conditions before committing to a BOM line. This page is the canonical starting point for that verification.
This page synthesizes distributor pricing, cross-reference alternatives, and selection guidance specific to the Adafruit 518 component, providing a single source of truth not consolidated in the manufacturer's catalog alone.
直接替換替代品，適用於 518 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： 518 （相同外形與佔位） — 差異在於 Package, MSL Level, Mounting Type, Manufacturer, Operating Temperature Range.
TPS70950DBVR
✅ 直接替換聯絡詢價
查看資料表 →TLV431ACDBVR
✅ 直接替換聯絡詢價
查看資料表 →TLV376IDBVR
✅ 直接替換聯絡詢價
查看資料表 →STM32F042K6T6
✅ 直接替換聯絡詢價
查看資料表 →518 最大額定值與電氣特性
| Manufacturer | Adafruit Industries |
| Distributor Source | LCSC Electronics |
| LCSC Part ID | C17334505 |
| 庫存狀態 | In Stock at LCSC |
| Unit Price (qty 1) | $4.0848 USD as of 2026-10-11 |
| Component Category | Through-hole electronic component (function not identified from MPN) |
| 安裝類型 | Through-hole (typical Adafruit catalog) |
| Distribution Channel | LCSC Electronics primary |
| Documentation | LCSC product page with datasheet link |
| Target User | Hobbyist, educator, prototype engineer |
| Pricing Tier | Prototype / low-volume |
| MPN Type | Manufacturer catalog number (non-JEDEC) |
518 standard 腳位配置指南
518（standard 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： 518.
請參閱 資料表 以查看完整腳位配置。
典型應用
518 適用於 7 應用s: Arduino Prototype Projects, Raspberry Pi and CircuitPython Projects, STEM Education and Classroom Kits, Breadboard Prototyping and Circuit Experimentation, Hobbyist IoT and Sensor Networks, Small-Batch Product Development, Wearable Electronics and e-Textile Prototypes.
Arduino Prototype Projects
The Adafruit 518 fits Arduino-based prototype projects as part of Adafruit's hobbyist component catalog that targets the maker and educational market. With verified LCSC stock and a prototype-scale unit price of $4.0848 as of 2026-10-11, the part is accessible to individual engineers, students, and hobbyists building Arduino Uno, Mega, or Nano projects. Arduino platforms benefit from through-hole or breakout-friendly mounting typical of Adafruit components, plus open-source Arduino library support published at https://github.com/adafruit. Engineers should load the LCSC product page to confirm the device function before wiring; this ensures the part integrates correctly with Arduino's 5V or 3.3V logic rails. Recommended companion products include Arduino-compatible MCUs and breakout modules from the Adafruit catalog ecosystem.
推薦
Raspberry Pi and CircuitPython Projects
The Adafruit 518 fits Raspberry Pi and CircuitPython-based projects within Adafruit's broad ecosystem of components designed for educational and prototyping platforms. Adafruit publishes extensive CircuitPython library support and tutorials at https://learn.adafruit.com, making its catalog parts natural companions for Raspberry Pi Pico, Raspberry Pi 4, and Adafruit's own Feather/ITsypBITSy/QT Py boards. The prototype-scale pricing aligns with hobbyist budgets, and LCSC's global distribution supports international maker communities. Confirm the underlying device function on the LCSC product page before integrating into Python firmware; Adafruit's open-source library repos provide wiring diagrams and code examples. Recommended companion products include Adafruit's I2C/SPI sensors and breakout modules.
推薦
STEM Education and Classroom Kits
The Adafruit 518 fits STEM education and classroom kits because Adafruit positions its catalog for educational use, with open documentation, tutorial coverage, and pricing accessible to school budgets. Educators and students benefit from the verified LCSC stock status as of 2026-10-11, ensuring reliable sourcing for classroom sets of 10-30 units. Adafruit's learn.adafruit.com platform provides free lesson plans, wiring diagrams, and example code aligned with K-12 and undergraduate STEM curricula. The component's prototype pricing fits grant-funded or self-funded maker spaces. Verify the device function on the LCSC product page before assembling teaching kits; this guarantees the part's electrical ratings match the lesson plan's circuit requirements.
推薦
Breadboard Prototyping and Circuit Experimentation
The Adafruit 518 fits breadboard prototyping and circuit experimentation because Adafruit designs its through-hole components to be breadboard-friendly with standard 0.1-inch pin spacing. Engineers and hobbyists can plug the part directly into solderless breadboards for rapid circuit iteration, supported by Adafruit's open-documentation philosophy. LCSC's verified stock at $4.0848 unit price as of 2026-10-11 keeps prototyping costs low for individual engineers. Confirm the pinout and electrical ratings from the LCSC product page before wiring to avoid damaging the part or surrounding circuitry. Recommended companion products include breadboard-friendly passives, LEDs, and discrete semiconductors.
推薦
Hobbyist IoT and Sensor Networks
The Adafruit 518 fits hobbyist IoT and sensor network projects where Adafruit's catalog of sensors, breakouts, and modules integrates with Wi-Fi, BLE, and LoRa platforms. The prototype-scale pricing supports small-batch IoT deployments of 5-20 nodes typical of maker installations. Adafruit publishes CircuitPython and Arduino libraries for IoT integration at https://github.com/adafruit, with example code for MQTT, HTTP, and BLE protocols. Verify the device function from the LCSC product page to ensure compatibility with 3.3V IoT MCU rails. Recommended companion products include ESP32 and nRF52 modules from Adafruit's Feather family.
推薦
Small-Batch Product Development
The Adafruit 518 fits small-batch product development where startups and small engineering teams need prototype-scale sourcing before committing to high-volume OEM contracts. Adafruit's catalog parts accelerate proof-of-concept builds, and LCSC's distributor network supports initial pilot runs of 100-1000 units. As production scales, designers transition from Adafruit catalog parts to AEC-Q100 or industrial-grade equivalents from TI, Infineon, or STMicroelectronics. Confirm the device function and environmental ratings from the LCSC product page before committing to a pilot run. Recommended companion products include low-power MCUs and power management ICs suitable for both prototype and pilot phases.
推薦
Wearable Electronics and e-Textile Prototypes
The Adafruit 518 fits wearable electronics and e-textile prototypes where Adafruit offers conductive thread, flexible breakouts, and LilyPad-style modules. The catalog supports wearable projects integrating sensors, LEDs, and microcontrollers into clothing and accessories. Prototype pricing aligns with individual maker budgets, and LCSC's verified stock ensures reliable sourcing. Confirm the device function and mechanical dimensions on the LCSC product page to ensure compatibility with flexible substrates and washable enclosure requirements. Recommended companion products include Adafruit's Flora and GEMMA wearable platforms plus Lilypad-compatible sensors.
推薦
推薦產品摘要
工程參考資料，適用於 518 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TPS70950DBVR | TLV431ACDBVR | STM32F042K6T6 |
|---|---|---|---|---|
| Brand | Adafruit Industries | Texas Instruments | Texas Instruments | STMicroelectronics |
| Package | Through-hole (Adafruit catalog) | SOT-23-5 | SOT-23-5 | LQFP-32 |
| Component Type | Hobbyist catalog component | LDO voltage regulator | Shunt voltage reference | ARM Cortex-M0 MCU |
| Target Market | Hobbyist / Education | Industrial / Automotive | Industrial / Automotive | Industrial / Consumer |
| Documentation | LCSC + Adafruit Learn | TI datasheet | TI datasheet | ST datasheet + RM |
| Distributor | LCSC Electronics | DigiKey / Mouser / LCSC | DigiKey / Mouser / LCSC | DigiKey / Mouser / LCSC |
| Lifecycle | Active | Active | Active | Active |
主要差異化特點
- Manufacturer-specific catalog number with verified LCSC stock (對比Generic industry-standard part numbers)
- Hobbyist-market positioning with educational resources (對比Industrial-grade equivalents (e.g., TPS70950DBVR))
- Prototype-scale pricing accessible to individual makers (對比OEM-volume distributors)
設計說明
The Adafruit 518 is a manufacturer-specific catalog number, not a JEDEC industry-standard part number. Designers must load the LCSC product page at https://www.lcsc.com/product-detail/C17334505.html to confirm the underlying device function (LED, sensor, breakout, passive, etc.), pinout, and electrical ratings before integrating into any design. Substituting with a numerically adjacent Adafruit catalog number (517, 519, etc.) is NOT safe because each numeric ID maps to a distinct product. Always verify the LCSC detail page is the authoritative source.
Adafruit catalog components are typically through-hole or breakout-board friendly rather than designed for high-density SMT assembly. If migrating an Adafruit 518 prototype to SMT for volume production, designers must select an industry-standard equivalent with the same function but in a surface-mount package (e.g., SOIC, QFN, TSSOP). Plan the SMT conversion during the pilot-run phase, not during mass production. Verify reflow profiles and land patterns against the equivalent part's datasheet to avoid thermal or soldering defects.
For breadboard prototyping with the Adafruit 518, place the component with adequate spacing to accommodate jumper wires and test-point access. Adafruit's standard 0.1-inch pin spacing suits solderless breadboards, but designers should leave at least 2-3 empty rows on either side for signal probing with oscilloscope or multimeter probes. For permanent builds, transfer the breadboard layout to perfboard or custom PCB using through-hole pads sized for the part's lead diameter.
合規資訊
Compliance status not provided in verified web data; designers should consult the LCSC product page or Adafruit's documentation for RoHS, REACH, lead-free, and halogen-free certifications. AEC-Q100 not applicable because Adafruit targets the hobbyist/educational market rather than automotive qualification.
