TCF250-145

厂商：
HAMLIN
封装：
SMD,5.5x5.5mm
描述：

数据手册：

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TCF250-145 数据手册

PolySwitch® PTC Devices PRODUCT: TCF250-145 DOCUMENT: SCD25919 REV LETTER: G REV DATE: JULY 26, 2016 PAGE NO.: 1 OF 2 Overcurrent Protection Device Specification Status: Released Maximum Operating Voltage: 60VDC Fault Ratings at 20°C: 250VRMS, 3A, 10 applications Additional Info at 20°C: • Resistance matched: N/A • Lightning withstand: - ITU-T K.20/K21 - 1.5 kV • Helps equipment meet ITU-T K.20/K.21recommendations • Helps equipment meet Telcordia GR1089 intrabuilding requirements Marking: None TABLE I. DIMENSIONS: A B MIN MAX MIN MAX mm: 5.4 5.6 5.4 5.6 in:* (0.21) (0.22) (0.21) (0.22) *Rounded off approximation. C MIN 2.0 (0.08) MAX 2.5 (0.10 ) TABLE II. PERFORMANCE RATINGS @ 20°C: HOLD* CURRENT (A) TRIP CURRENT (A) RESISTANCE (Ω) TIME TO TRIP(Sec) OPERATING @ 1A TEMPERATURE (°C) R MIN R MAX R1 MAX** TYP* 0.145 0.290 3.0 6.0 14.0 2.5 * Dependent on Heat Sinking of Mounting Fixture. **Maximum device resistance at 20°C measured 1 hour post trip MIN -40 MAX 85 TRIPPED POWER DISSIPATION (W) TYP @ 60VDC 1.0 TABLE III. APPLICABLE PART DESCRIPTIONS: PART DESCRIPTION PCN # (INTERNAL USE ONLY) PACKAGING TYPE NOTES TCF250-145 F78914-000 Bulk N/A Agency Recognitions: Reference Documents: Precedence: Effectivity: CAUTION: UL (File #E74889) PS300, ITU-T K.20/K.21 This specification takes precedence over documents referenced herein. Reference documents shall be the issue in effect on the date of invitation for bid. Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame. Materials Information ROHS Compliant ELV Compliant © 2016 Littelfuse,Inc Specifications are subject to change without notice. Revised July 26, 2016 Pb-Free Littelfuse.com PolySwitch® PTC Devices Overcurrent Protection Device PRODUCT: TCF250-145 DOCUMENT: SCD25919 REV LETTER: G REV DATE: JULY 26, 2016 PAGE NO.: 2 OF 2 Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, lifesaving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. © 2016 Littelfuse,Inc Specifications are subject to change without notice. Revised July 26, 2016 Littelfuse.com

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TCF250-145

物料型号为TCF250-145。

器件简介为Littelfuse公司生产的PolySwitch® PTC复位型过载保护设备，能承受最大60VDC的工作电压。

引脚分配未在文档中提供详细信息。

参数特性如下： - 故障额定值在20°C时为250VRMS、3A、10次应用。

- 附加信息在20°C时包括符合ITU-T K.20/K21标准的1.5kV防雷击能力。

- 电阻匹配：不适用。

- 在60VDC下，1A电流时的最小电阻为0.145Ω，最大电阻为0.290Ω。

功能详解： - 该设备在过电流条件下能快速响应，通过发热来断开电路，从而保护电子设备。

应用信息： - 适用于需要过载保护的电子设备，如电信设备。

封装信息： - 封装类型为散装，包装类型为Bulk。