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Littelfuse SMAJ85A
Configuration
1 options
Configuration
21+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Littelfuse SMAJ85A
- Type
- LITTELFUSE
- Unit
- Electronic Component
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- SMAJ85A
- Electronic Component
- 1
- Package
- DO-214AC(SMA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.118g
- Electronic Component
- 1
- Electronic Component
- BM0000000438
- Operating Temperature
- 65℃~+150℃
- Voltage
- 137V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ85A 产品概述
概述
SMAJ85A 是由美国力特（Littelfuse Inc.）制造的一款高性能瞬态电压抑制二极管（TVS二极管），广泛用于电力线路中的过压保护。其主要设计目的是通过提供快速且有效的电压箝制，保护敏感电子器件免受过电压瞬态的影响。这款二极管采取表面贴装型设计，封装规格为 DO-214AC（SMA 形式），适用于各种电子电路和设备中。
基础参数
- 极性: 单向（Unidirectional），适用于只在一个方向上抑制瞬时过压信号的应用。
- 峰值脉冲电流（Ipp）: 在 10/1000 穿透时间下，峰值脉冲电流为 2.9A，这是其能够承受的最大脉冲电流值。
- 箝位电压（Vclamp）: 当电流达到脉冲规格时，箝位电压最大值为 137V，有效防止过电压对电路造成的影响。
- 击穿电压（Vbr）: 最低击穿电压为 94.4V，确保在给定的电压超过此值时，能够快速导通并保护后续电路。
- 反向关断电压（VRWM）: 典型值为 85V，提供对电路的有效阻断，从而在正常工作条件下避免误导通。
功能特点
- 高效抑制: SMAJ85A 能够在电压超过其反向关断电压时迅速导通，提供低阻抗通路以保护电路，帮助抑制数据丢失或电路损坏的风险。
- 宽温度范围: 该二极管的工作温度范围为 -65°C 到 150°C（TJ），使其在极端环境中依然具备良好的性能，适合航空、汽车以及工业等领域的应用。
- 安装简便: 作为表面贴装型元件，SMAJ85A 支持自动贴片装配，简化了器件的集成过程，提高了生产效率。
应用场景
SMAJ85A 在各种应用中表现出色，尤其在需要过电压保护的仪器和电气设备中具有重要作用。常见的应用场景包括：
- 电源线路保护: 为电源模块提供全面的过电压和瞬态浪涌保护。
- 通信设备: 防止电压尖峰影响到通信信号稳定，从而保障数据传输的可靠性。
- 汽车电子: 用于电动车辆和传统汽车中的各种电气设备保护，以增加安全性和可靠性。
- 工业控制: 应用于复杂的工业自动化系统，确保设备在负载波动或电力干扰中保持稳定。
竞争优势
与市场上其他同类产品相比，SMAJ85A 具备较高的功率承受能力（峰值脉冲功率达到 400W），同时具备极低的泄漏电流，能够确保设备在正常工作条件下的有效稳定性。此外，力特的品牌优势和优良的客户支持也为用户提供了额外的信任保障。
总结
SMAJ85A 作为一款高性能的 TVS 二极管，凭借其优秀的电气特性和广泛的应用场景，为电子设备提供了一道坚实的防护屏障。其超高的工作温度范围和优质的封装特性，使其成为设计人员的首选，尤其在能够承受高峰值电流和长期稳定工作的要求下，展现出卓越的性能。无论是在消费电子、通讯设备还是工业控制系统中，SMAJ85A 都能够满足现代电子工程中对过电压保护的严苛需求。
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