WMSIC Electronic Components

ROHM KDZVTFTR4.3B

ModelKDZVTFTR4.3B
PackageSOD-123FL
BrandROHM
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ROHM KDZVTFTR4.3B
Type
ROHM
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ROHM
Electronic Component
KDZVTFTR4.3B
Electronic Component
1
Package
SOD-123FL
Electronic Component
Zener Diode
Electronic Component
0.05g
Electronic Component
1
Electronic Component
BM0058404052
Diode
1
Current(Ir)
20uA@1V
Power Dissipation(Pd)
1W
Electronic Component
4.3V~4.8V
Electronic Component
Electronic Component
Electronic Component
3000
Electronic Component
4.3V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

KDZVTFTR4.3B 产品概述

一、产品简介

KDZVTFTR4.3B 是 ROHM(罗姆)品牌的一款独立式稳压二极管,标称稳压值 4.3V,稳压范围 4.3V~4.8V,最大耗散功率 Pd = 1W,反向漏电流 Ir = 20μA @1V。该器件采用 SOD-123FL 表面贴装封装,适合体积受限的稳压、基准与钳位应用。

二、主要特性

  • 标称稳压:4.3V(范围 4.3~4.8V),提供低压差稳压点。
  • 低至 20μA 的反向电流(@1V),适合低功耗场景的基准要求。
  • 1W 的功率耗散能力,适用于中等功率的稳压或瞬态钳位。
  • SOD-123FL 小型表贴封装,便于自动贴装和高密度 PCB 设计。

三、电气特性与使用建议

按 Pd=1W 与 Vz≈4.3V 简单计算,器件理论最大稳压电流约为 232mA(Iz = Pd/Vz)。实际应用中应避免长期在该极限功率点工作,建议在稳压基准场合采用数 mA 的偏置电流以取得更稳定的电压,若用于功率稳压应参考厂方数据表的温度与功率折减曲线进行设计。

四、典型应用场景

  • 小功率线性稳压与参考电压源。
  • 信号或电源线路的过压钳位与瞬态保护。
  • 偏置电路、电平移位与保护电路中作为稳定点元件。

五、封装与热管理

SOD-123FL 提供紧凑的占板面积,但热阻相对较高。为了保证可靠性与长期稳定性,应在 PCB 设计中为该器件留出适当铜箔散热区域或过孔,缩短走线并避免热源邻近。高温环境或连续大电流工作时需要参考厂方的功率折减规范。

六、选型与注意事项

  • 设计前请查阅 ROHM 官方数据手册,确认测试电流 Izt、动态阻抗、温度系数及最大结温等关键信息。
  • 若需要更精确基准或更高精度稳压,请考虑带有更低温漂和更严格容差的器件或配合运放/参考源使用。
  • 焊接及回流过程中遵循 SOD-123FL 的温度曲线,避免过热造成性能退化。

总结:KDZVTFTR4.3B 以其 4.3V 标称电压、1W 功率和 SOD-123FL 小封装,适合各种中低功率稳压、基准和钳位应用。设计时重视热管理与工作电流选择,可在体积受限系统中提供可靠的电压稳定功能。

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