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C1812X472K202T是禾伸堂(IHHEC) 推出的高压多层陶瓷贴片电容(MLCC),专为工业级高压场景设计。型号命名遵循行业通用规则,各部分含义清晰:
该产品兼顾小容值、高耐压与温度稳定性,是高压电路的核心被动元件之一。
核心参数符合工业级高压MLCC标准,具体如下(测试条件:25℃、1kHz):
参数 规格值 补充说明 标称容值 4.7nF(472) 有效数字+幂次编码 容值精度 ±10%(K档) 满足多数高压电路容差需求 额定直流电压(VR) 2kV 直流场景下的安全工作电压 耐电压(Vr) 2.2kV 10秒耐压测试,确保可靠性 损耗角正切(tanδ) ≤2.5% 能量损耗低,适合高频滤波 绝缘电阻(IR) ≥10⁹Ω 1min施加额定电压测试 温度系数 X7R(-55℃~+125℃) 容值变化≤±15%注:额定电压为直流值,交流场景需核算峰值电压(峰值≤2kV)。
X7R温度系数是该产品的核心优势:在-55℃至+125℃范围内,容值波动不超过±15%。相比NPO(温度稳定但高压容值极小),X7R可实现4.7nF的实用容值;相比Y5V(容值变化±20%),其温度稳定性更优,适合对容值波动敏感的高压电路(如电源滤波、信号耦合)。
该产品因高压、小容值、温度稳定的特点,广泛用于:
该产品凭借禾伸堂的高压MLCC技术积累,在可靠性、温度稳定性上表现突出,是高压电路设计的可靠选择。
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Product sourcing intelligence
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.
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.
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