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YLPTEC B0503S-1WR3 B0503S
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- YLPTEC B0503S-1WR3
- Type
- YLPTEC
- Minimum package
- 43 管
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- YLPTEC
- Electronic Component
- B0503S-1WR3
- Electronic Component
- 1
- Electronic Component
- 6mm
- Package
- SIP-4
- Electronic Component
- Isolated Power Supply Module
- Electronic Component
- 1.954g
- Electronic Component
- 11.6mm
- Electronic Component
- 10.16mm
- Electronic Component
- 1
- Electronic Component
- BM0257676998
- Operating Temperature
- 40℃~+105℃
- Switching Frequency
- 270kHz
- Electronic Component
- 30mVp-p
- Conversion
- 83%
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
B0503S-1WR3 产品概述
一、产品简介
B0503S-1WR3 是 YLPTEC（易川）推出的一款小功率降压隔离型 DC-DC 转换器，单通道输出，额定输出功率 1W。该器件在宽温范围内稳定工作，具有短路保护及良好的隔离性能，适合对体积、可靠性和隔离要求较高的嵌入式电源应用。
二、主要参数
- 功能类型：降压型（隔离 DC-DC）
- 输入电压范围（Vin）：4.5V ～ 5.5V
- 输出电压（Vout）：3.3V
- 输出功率：1W
- 最大输出电流：303mA
- 转换效率：典型 83%
- 开关频率：270kHz
- 空载输入电流：8mA
- 纹波噪声：30mVp-p（典型）
- 最大容性负载：2400µF
- 隔离电压（Vrms）：1.5kV
- 保护功能：短路保护
- 工作温度：-40℃ ～ +105℃
三、核心特性
- 高效率：典型转换效率 83%，在 5V→3.3V 场景下损耗小，有利于热管理。
- 强隔离：1.5kV 隔离电压适用于需要隔离通信接口或隔离供电的场合。
- 抗负载能力：最大容性负载 2400µF，可稳定驱动大电容负载而不产生振荡。
- 小体积 SIP-4 封装：尺寸 11.6mm × 6mm × 10.16mm，便于 PCB 布局与模块化设计。
- 可靠性：内置短路保护并支持宽温度工作，适合工业级应用。
四、典型应用场景
- 工业控制与传感器接口隔离电源
- 嵌入式系统的局部降压隔离供电（MCU、外围模块）
- 通信接口、总线隔离（如 CAN、RS-485 等）
- 移动或便携设备中需小功率隔离的子系统
五、设计与使用要点
- 按照厂商数据手册正确选配输入/输出旁路电容，建议使用低 ESR 电容以降低输出纹波。
- 尽量缩短输入/输出电源走线，减少寄生电感，必要时在输入侧并联陶瓷电容滤波。
- 输出电流建议适当留有裕量，长期工作时对温升进行评估并考虑散热或降额使用。
- 在存在强干扰环境下，考虑在输入端增加滤波与浪涌抑制元件以提高稳定性。
- 坚持依据官方引脚定义和布线指南完成 PCB 设计，避免误接或接地环路。
六、封装与可靠性
- 封装形式：SIP-4，便于插装或贴装使用；外形尺寸：长 11.6mm、宽 6mm、高 10.16mm。
- 工作温度范围宽（-40℃～+105℃），并具有限流/短路保护，适合要求长期稳定运行的场合。
- 隔离等级 1.5kV 可满足中低压隔离需求，但在更高隔离要求的系统中仍需根据规范选择更高等级方案。
结论：B0503S-1WR3 在体积小、隔离可靠、效率较高的前提下，提供 3.3V/303mA 输出，适合对隔离电源有明确需求且功率需求较小的工业与嵌入式应用。设计时按照厂商资料完成外围电路与热设计，可获得稳定可靠的工作表现。
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