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LGE SMBJ5340B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LGE SMBJ5340B
- Type
- LGE
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LGE
- Electronic Component
- SMBJ5340B
- Electronic Component
- 1
- Package
- SMB
- Electronic Component
- Zener Diode
- Electronic Component
- 0.17g
- Electronic Component
- 1
- (Zzk)
- 300Ω
- (Zzt)
- 1Ω
- Electronic Component
- BM0230873930
- Diode
- 1
- Current(Ir)
- 1uA
- Power Dissipation(Pd)
- 5W
- Electronic Component
- 5.7V~6.3V
- Electronic Component
- 65℃~+150℃
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMBJ5340B — LGE(鲁光) 6V 5W 稳压二极管产品概述
一、产品概述
SMBJ5340B 为 LGE(鲁光) 出品的独立式稳压二极管，标称稳压值 6V，典型反向漏电流 Ir 为 1μA，稳压值允许公差范围为 5.7V~6.3V。器件以 SMB 封装（DO-214AA）提供，适用于需要小体积、较高稳压功率的稳压与过压保护场合。标准耗散功率 Pd 为 5W，允许在宽温度范围内工作，结温范围为 -65℃ 至 +150℃。
二、主要特点
- 标称稳压：6V，稳压范围 5.7V~6.3V，适合低压参考与稳压用途。
- 低漏电：反向电流仅 1μA（典型），利于低功耗系统。
- 中等内阻：稳态阻抗 Zzt ≈ 1Ω，分流动态阻抗 Zzk ≈ 300Ω，响应稳健。
- 功率能力：最大耗散功率 5W（注意需良好散热），适合中等功率点稳压与小功率保护。
- 宽温度范围：工作结温 -65℃~+150℃，可靠性高，适应工业环境。
三、电气参数说明与选型要点
- 最大持续耗散 Pd=5W：器件在额定环境和散热条件下可耗散的最大功率。实际设计中应留有裕量并考虑结温上升与环境温度。
- 稳压特性：在规定测试电流下获得 6V 标称值，开路或极低电流时电压会偏离标称，使用时需保证一定的偏置电流以维持稳定。
- 反向漏电 Ir：在高阻输入或待机场景可有效减少静态损耗。
- 阻抗 Zzt/Zzk：影响负载变动时的稳压精度，Zzt 越小，短时稳压能力越好。
四、热管理与可靠性建议
- PCB 散热：SMB 为表面贴装封装，建议在焊盘处增加铜箔面积或添加散热岛以降低结-壳热阻，延长器件寿命。
- 功率热限：按 Pd 计算最大允许工作电流 Iz_max ≈ Pd / Vz（理论值约 0.83A），但不建议长期在此值工作，应根据实际散热能力大幅降额。
- 温度影响：高温下稳压性能和耗散能力会下降，应参考具体应用的环境温度进行功率降额设计。
五、典型应用与使用注意
- 典型应用：小功率线性稳压、电源参考、浪涌/过压吸收、信号钳位及保护。
- 使用建议：稳压二极管通常与限流电阻配合使用；设计时计算 R = (Vin - Vz) / (Iz + Iload)，并确保 Vz * Iz + Vz * Iload 不超过 Pd，在高温下再作降额。
- 安装与储存：采用标准回流焊工艺，避免超温或长时间高湿环境存放；焊接后建议进行必要的清洁与外观检查。
SMBJ5340B 以其稳定的 6V 稳压特性、较低漏电和 SMB 封装的良好散热通道，适合工业与消费类电子中的中低功率稳压与保护场合。选择时需综合考虑工作电流、环境温度与 PCB 散热能力，确保长期可靠工作。
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