Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
SHIKUES 78L24
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- SHIKUES 78L24
- Type
- SHIKUES
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 1.7V@(40mA)
- Electronic Component
- SHIKUES
- Electronic Component
- 78L24
- Electronic Component
- 1
- Package
- SOT-89
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.144g
- Electronic Component
- 1
- Electronic Component
- BM0257628052
- Operating Temperature
- 40℃~+85℃@(Ta)
- Operating Voltage
- 38V
- Output
- Electronic Component
- Output Voltage
- 24V
- Output Current
- 150mA
- Output Type
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
78L24 产品概述
一、概述
78L24 是 SHIKUES（时科）推出的一款固定输出 24V 线性低压差稳压器（LDO），单通道正输出，采用 SOT-89 小型封装。该器件侧重于工业级供电场合，支持最高工作电压 38V，最大输出电流 150mA，并提供过热关断与短路保护，适合为传感器、控制模块、继电器驱动及工业控制电子设备提供稳定电源。
二、主要性能参数
- 输出类型：固定（24V）
- 最大工作电压：38V
- 输出电流：150mA（典型最大连续输出）
- 压差（dropout）：1.7V @ 40mA（在更高输出电流下压差会增加，应留足裕量）
- 静态电流（Iq）：6.5mA
- 电源纹波抑制比（PSRR）：35dB @ 120Hz
- 保护功能：热关断、短路保护
- 工作温度范围：-40℃ ~ +85℃（Ta）
- 封装：SOT-89，单通道，正输出
三、热设计与使用建议
- 功耗计算：稳压器功耗 P = (VIN − VOUT) × IOUT。举例当 VIN = 38V、VOUT = 24V、IOUT = 150mA 时，P ≈ 2.1W。SOT-89 封装对散热有限，长时间在此功耗下需通过较大 PCB 铜箔散热或外部散热措施降低结温。
- 输入电压裕量：因压差随电流上升而增加，实际应用中建议保证 VIN ≥ VOUT + 2.5V（视负载而定），以确保在 150mA 工况下不发生掉电。
- 旁路和稳定性：建议在输入端靠近器件放置 1µF10µF 低 ESR 电容以抑制瞬态和提高稳定性，输出端使用 4.7µF10µF 低 ESR 电容以保证环路稳定与改善瞬态响应（具体电容选型参考厂商数据手册）。
- 布局要点：输入、输出电容靠近引脚布置，地线短且直接回到大地平面，SOT-89 的散热通过引脚和底部铜箔，应在 PCB 上预留较大散热铜箔并连到地层。
四、典型应用场景
- 工业控制模块、PLC 辅助电源
- 仪表与数据采集系统的模拟/数字参考电源
- 低中功率传感器、继电器驱动电源
- 通信设备和嵌入式系统中要求较高输入电压容限但输出电流不大的稳压点
五、封装与可靠性
SOT-89 小型封装有利于空间受限的电路板设计，相比 TO-220/TO-92 工艺更适合表面贴装生产。器件集成热关断和短路保护，提高系统可靠性，但在高功耗场合仍需关注结温和长期热应力。
六、选型与注意事项
- 若系统要求更低的静态电流或更高输出电流，应考虑替代型号或更大封装的 LDO。
- 对于电池供电或极低功耗应用，6.5mA 静态电流可能偏高，应权衡功耗。
- 应严格参照厂方数据手册的典型特性曲线（压差随电流上升、PSRR 随频率变化等）进行设计验证。
78L24 在中等电流、较高输入电压需求的场景下提供了简单可靠的线性稳压方案，搭配良好 PCB 散热设计，可在工业环境中长期稳定运行。
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.
