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MHL3014UGTD 是美华(MEIHUA)推出的一款高亮度翠绿色(峰值波长约525 nm,标称发射波长520 nm)3mm 直插式发光二极管(LED)。封装为插件式圆头,发光角度约45°,在典型正向电流20 mA 工作点时具有约3130 mcd 的光强,正向压降约为 3.2 V,额定功率 120 mW,适用于各种指示、显示与背光场合。
为保证稳定可靠的亮度和寿命,应采用限流方式驱动 LED。可选用简单的串联电阻或恒流驱动器。
串联限流电阻计算示例(以 IF = 20 mA, Vf = 3.2 V):
脉宽调制(PWM)调光可行,推荐在低侧使用 MOSFET 或 NPN 做开关,以获得良好线性与高频响应;注意 PWM 频率对人眼闪烁感应与电磁兼容的影响。
LED 的光输出与寿命与结温密切相关。尽量保证环境温度在规格范围内工作,并避免在最高电流与高环境温度下长期运行。若需长期稳定亮度,建议对驱动电流适当降额(例如 10–15 mA)以提高寿命与可靠性。
制造商给出功率限值为 120 mW,应确保结温与封装散热路径不会引起超温。实际系统设计时应考虑散热、通风与 PCB 布局。
本概述基于 MHL3014UGTD 的典型参数与常见工程实践,具体详细电气、机械和可靠性数据请参阅美华(MEIHUA)官方数据手册或直接联系供应商获取批次与分档信息,以便在量产设计中确保一致性与合规性。
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WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
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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.
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The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
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