Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Jingdao Microelectronics SMBJ18CA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Electronic SMBJ18CA
- Type
- Jingdao Microelectronics
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic
- Electronic Component
- SMBJ18CA
- Electronic Component
- 1
- Package
- SMB
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.167g
- Electronic Component
- 1
- Cj- Capacitor
- 390pF
- Electronic Component
- BM0224625441
- Voltage
- 29.2V
- Electronic Component
- IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 22.1V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMBJ18CA TVS二极管产品概述
概要
SMBJ18CA 是一种由晶导微电子生产的静电和浪涌保护（TVS/ESD）二极管，专门设计用于保护电子设备免受静电放电（ESD）和浪涌电流的损害。以下是对此产品的详细介绍。
基础参数
- 击穿电压（Vc）: 20V
- 击穿电压是指在正常工作条件下，TVS二极管开始导通并吸收过载能量的电压阈值。
- 反向截止电压（Vrwm）: 18V
- 反向截止电压是指在正常工作条件下，TVS二极管可以承受的最大反向直流电压。
- 峰值脉冲电流（Ipp）: 20.6A
- 峰值脉冲电流表示TVS二极管在短时间内可以承受的最大电流。
- 最大钳位电压（Vcl）: 29.2V
- 最大钳位电压是指当TVS二极管导通时，通过其两端的最大允许电压。
类型和封装
- 类型: TVS（Transient Voltage Suppressor）
- TVS二极管是一种专门用于保护电子设备免受瞬态电压冲击的元器件。
- 封装: SMB（DO-214AA）
- SMB封装是一种小型、表面安装封装，适合于空间有限的应用场景。
品牌
- 品牌: 晶导微电子
- 晶导微电子是一家专业从事电子元器件研发、生产和销售的公司，拥有丰富的产品线和技术优势。
应用场景
SMBJ18CA TVS二极管广泛应用于各种需要保护电子设备免受静电和浪涌电流影响的场景，包括但不限于：
- 通信设备: 手机、无线路由器、调制解调器等。
- 工业控制系统: PLC、传感器、执行器等。
- 汽车电子: 汽车音响系统、导航系统、安全系统等。
- 消费电子: 电视机、音响设备、家用电器等。
- 医疗设备: 医疗监护仪、诊断设备、治疗设备等。
工作原理
当输入电压超过反向截止电压（Vrwm）时，TVS二极管会迅速导通，将过载能量吸收并将电压钳制在安全范围内，从而保护后级电路免受损害。这种快速响应和高效能量吸收能力使得SMBJ18CA成为一种理想的保护解决方案。
优势
- 高效能量吸收:
- SMBJ18CA能够在极短的时间内吸收大量能量，有效保护电子设备。
- 低漏电流:
- 在正常工作状态下，TVS二极管的漏电流非常小，不会对系统性能产生显著影响。
- 小型化封装:
- 使用SMB封装，使得该元器件非常适合于空间有限的应用场景。
- 高可靠性:
- 晶导微电子严格的质量控制和测试过程确保了产品的高可靠性和长寿命。
使用注意事项
- 安装方向:
- 确保正确安装TVS二极管的极性，以避免反向偏置导致的故障。
- 热设计:
- 考虑到TVS二极管在吸收能量时可能产生的热量，确保良好的散热设计。
- 电路布局:
- 将TVS二极管尽可能靠近需要保护的敏感器件，以减少传导路径上的电感和电容，提高保护效果。
总结
SMBJ18CA TVS二极管是保护电子设备免受静电和浪涌电流影响的一种高效、可靠且小型化的解决方案。其优异的性能参数和广泛的应用场景使其成为许多工程师和设计师的首选。通过正确使用和安装此元器件，可以显著提高系统的可靠性和耐用性。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
