Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
ST SMAJ18CA-TR SMAJ18CA
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ST(STMicroelectronics) SMAJ18CA-TR
- Type
- ST
- Unit
- Electronic Component
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- ST(STMicroelectronics)
- Electronic Component
- SMAJ18CA-TR
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.128g
- Electronic Component
- 1
- Electronic Component
- BM0000283541
- Operating Temperature
- 55℃~+150℃
- Voltage
- 39.3V
- Electronic Component
- IEC 61000-4-5；IEC 61000-4-2
- Current(Ir)
- 200nA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
产品概述：SMAJ18CA-TR
引言
SMAJ18CA-TR 是一款由意法半导体（STMicroelectronics）生产的高性能瞬态电压抑制二极管（TVS Diode），采用SMA（DO-214AC）封装。具备卓越的反向关断电压以及优良的箝位能力，SMAJ18CA-TR 特别适用于对敏感电子元器件进行过压保护，防止由于瞬态电压引起的损坏。这款器件的广泛适用性和高性能，令其成为通用电源线路保护和电路安全的重要组成部分。
关键特性
反向关断电压: 该器件的典型反向关断电压为18V，意味着它能有效在正常工作条件下抑制电压到安全水平，防止损坏。
击穿电压: SMAJ18CA-TR 的最小击穿电压为20V，确保在电压异常升高时，器件能够迅速响应并开始工作，限制电压至安全范围。
箝位电压: 在面对高达39.3V的瞬态过压情况时，SMAJ18CA-TR可有效限制电压，对重要电路进行保护，防止耐受能力不足的元器件受到威胁。
峰值脉冲电流: 该器件支持最大峰值脉冲电流为59A（在8/20µs的脉冲条件下）。这意味着其在高能量瞬态情况下，依然能够保持良好的性能。
工作温度范围: SMAJ18CA-TR 可以在-55°C至150°C的宽广温度范围内稳定工作，适合于严苛的环境条件。
封装形式: 该器件采用表面贴装型设计（SMA，DO-214AC），使得在现代电子电路中极易安装和组装，提高了应用的灵活性。
功率处理能力: SMAJ18CA-TR能处理最大高达400W的峰值功率，适合用于多种高功率电路的应用。
应用领域
SMAJ18CA-TR的应用范围广泛，包括：
电源电路保护: 可用于传统电源线路的瞬态抑制，避免高电压损害电源IC和其他关键元件。
通信设备: 保护与数据传输相关的电子器件不受瞬态电压造成的干扰。
消费电子产品: 在各种家用电器和电子产品中，作为过压保护组件，减少因电压浪涌造成的设备损坏。
汽车电子: 在汽车电路中应对可能的电压浪涌，确保电极配件和电子控制单元（ECU）的安全。
工业设备: 为各种工业控制和监测设备提供稳健的保护，降低维护成本和提高可靠性。
总结
SMAJ18CA-TR是一个高效、可靠的TVS二极管，设计时充分考虑了电压保护和稳定性。其优良的电气特性及广泛的应用场景，使其成为电子设备保护设计中的理想选择。无论是在家电、通信、工业还是汽车等领域，SMAJ18CA-TR都能提供出色的瞬态电压抑制性能，有效延长器件的使用寿命并提高系统的可靠性。
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.
