ULN2803CDWR TI Darlington Transistor Array | 20-SOIC | 50V, 500mA

Product Overview

The ULN2803CDWR from Texas Instruments is a high-voltage, high-current Darlington transistor array featuring eight open-collector outputs with common emitters. Each channel is rated at 50V and 500mA, with integrated suppression diodes for inductive load driving. Housed in a compact 20-SOIC package, it is ideal for interfacing low-level logic to high-power peripherals such as relays, solenoids, and stepper motors.

Detailed Technical Specifications

Key Features

• Eight Darlington transistors with common emitters
• Output current capability up to 500mA per channel
• Output voltage rating up to 50V
• Integrated clamp diodes for inductive load protection
• Inputs compatible with TTL and 5V CMOS logic
• Low input current (1.35mA typical at 5V)
• Compact 20-SOIC package for space-constrained designs

Target Applications

• Relay drivers in industrial control systems (e.g., PLC output modules)
• Stepper motor drivers for 3D printers and CNC machines
• Lamp and LED display drivers (e.g., 7-segment displays)
• Solenoid drivers in automotive systems (e.g., transmission control)
• Logic-to-power interface in 5G base station power management
• Dashboard indicator drivers in automotive clusters

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for ULN2803CDWR. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

ULN2803CDWR 是德州儀器（TI）推出的一款高電壓、大電流達林頓晶體管陣列，包含八個開路集電極輸出，共用發射極。每個通道額定電壓 50V，電流 500mA，並集成續流二極管，適用於驅動感性負載。採用緊湊的 20-SOIC 封裝，非常適合將低電平邏輯信號轉換為高功率外設（如繼電器、電磁閥和步進電機）的驅動信號。

詳細技術參數

核心特性

• 八個達林頓晶體管，共用發射極
• 每通道輸出電流高達 500mA
• 輸出電壓額定值 50V
• 集成鉗位二極管，保護感性負載
• 輸入兼容 TTL 和 5V CMOS 邏輯
• 低輸入電流（5V 時典型值 1.35mA）
• 緊湊的 20-SOIC 封裝，節省空間

典型應用場景

• 工業控制系統中的繼電器驅動（如 PLC 輸出模塊）
• 3D 打印機和 CNC 機床的步進電機驅動
• 燈泡和 LED 顯示驅動（如 7 段數碼管）
• 汽車系統中的電磁閥驅動（如變速箱控制）
• 5G 基站電源管理中的邏輯到功率接口
• 汽車儀表盤指示燈驅動

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 ULN2803CDWR 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]