Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
ST ZM4755APF Zener diode ZM4755APF
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ST ZM4755APF
- Type
- LL-41
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ST
- Electronic Component
- ZM4755APF
- Electronic Component
- 1
- Package
- LL-41
- Electronic Component
- Zener Diode
- Electronic Component
- ±5%
- Electronic Component
- 0.13g
- Electronic Component
- 1
- (Zzk)
- 1.5kΩ
- (Zzt)
- 70Ω
- Electronic Component
- BM0230898878
- Diode
- 1
- Current(Ir)
- 5uA
- Power Dissipation(Pd)
- 1W
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ZM4755APF 产品概述
一、产品简介
ZM4755APF 是一款额定稳压值为 43V 的齐纳二极管，品牌为 ST（先科），采用 LL-41 小型轴向封装，适用于中高电压参考与浪涌钳位场合。器件精度为 ±5%，反向漏电流为 5 μA（典型工况下），额定耗散功率 Pd 为 1W，适合非大功率的稳压与保护应用。
二、主要电气参数
- 稳压值（标称）：43V（±5%）
- 最大耗散功率：1W（器件温升与散热需考虑）
- 反向电流 Ir：5 μA（低漏泄，有利于精密小电流电路）
- 阻抗：Zzk = 1.5 kΩ（低电流膝区阻抗），Zzt = 70 Ω（工作区动态阻抗）
三、特性解读
Zzk 较高表明在齐纳膝区（小电流）时电压变化敏感，适合作开关或钳位启动用途；Zzt 为 70 Ω 则表示在正常规定电流下稳压性能较稳定但非超低阻抗，用于需要中等精度的参考或保护。±5% 精度适合一般工业与消费类电子应用。
四、典型应用与电路建议
适用于：
- 中高压参考源与基准电压
- 过压钳位与瞬态保护
- 电源去耦与浪涌吸收
设计提示：
- 最大稳压电流 Iz_max ≈ Pd / Vz ≈ 1W / 43V ≈ 23 mA，长期使用应取较低的工作电流并留裕量。
- 串联限流电阻 R = (Vs - 43V) / Iz，根据负载电流与稳压电流总和计算；电阻额定功率需按 (Vs - 43V)·Iz 选型并留裕量。举例：若 Vs=60V，取 Iz=10 mA，则 R≈1.7 kΩ，电阻耗散约0.17W。
五、热管理与可靠性
1W 为器件最大耗散，实际使用中应考虑环境温度与散热条件，必要时降低工作电流或采用并联/外部散热措施。长期在接近 Pd 的条件下工作会降低寿命。
六、封装与安装注意
LL-41 为小型轴向封装，便于穿孔安装。焊接时避免长时间高温加热引起封装损伤，焊点尽量靠近引脚并快速完成。
七、选型与替代建议
如需更低动态阻抗或更高功率，应选用功率等级更高或低阻抗的齐纳型号；若要求更高精度或更低温漂，可考虑基准电压源或温度补偿设计。
八、结论
ZM4755APF 适合用于要求中等精度的 43V 稳压与保护场合。设计时重点关注限流、散热与工作电流下的动态阻抗对稳压精度的影响，从而获得稳定可靠的电路表现。
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.
1 Piece ATMEGA328P-AU BGA Integrated Circuit Chipset QFP-32
- Model
- ATMEGA328P-AU
- Package
- DIP-28 / QFP-32
