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一、 芯片标志说明SpecificationWSS2502FH3950
WSS 2 502 F H 3950
㈠ ㈡ ㈢㈣ ㈤ ㈥
㈠NTC温度传感器。
NTC Temp sensor。
㈡传感头封装形式及尺寸。
Dimensions of the Ends of Sensor。
① 环氧树脂包封Packed with ethoxyline resin。
② 铝壳、铜壳、不锈钢壳等封装。
Packed with shell of aluminium ,copper,stainles,steel and so on。
③ 塑料壳封装。Packed with plastic。
④ 加固定金属片。Fixed sheet metal added。
⑤ 特殊形式封装。Special packed shape
㈢标称电阻值R25。The Rated ResistanceR25=5K±1%
㈣标称电阻值精度代号。F:±1% G:±2% H:±3% J:±5%
The Precision Symbol of Rated Resistance。
F:±1% G:±2% H:±3% J:±5%
㈤B值H为B(25/85℃)。L为(25/50℃).
B value H is B(25/85℃)。L is(25/50℃)。
㈥B值为3950K
B value is 3950K
一、产品技术参数(Technical parameters)
3.1标称电阻值:R25=5KΩ±1%;
Rate zero-resistance value: R25=5KΩ±1%;
3.2B值参数:B25/85=3950K+1%
B value:B25/85=3950K+1%
3.3绝缘电阻:空气中50VDC,大于10MΩ;
Insulation resistance :10MΩMin,50VDC in air
3.4耐电压:空气中,在传感器外壳与导线之间施加1000VAC,3秒、无闪络、击穿现象;
Puncture voltage: no flash and breakdown.1000VAC, 3S,between coating and line ,in air .
3.5耗散系数(δ):0.7~0.9mW/℃,空气中;
Dissipation constant(δ):0.7~0.9mW/℃over in air
3.6热时间定数(τ): 3.5~6.5S空气中
Thermal time constant (τ): 3.5~6.5S S over in air.
3.7使用温度范围:-50℃-+120℃;
Operation temperature range:-50℃-+120℃;
四、可靠性试验: (Reliability tests)
4.1高温存储Hot temperature storage
将传感器存放于100℃+5℃干燥环境中,1000hrs后,测试其电阻值R25、B值,
Store in hot still air at 100℃+5℃for 1000hrs.|△R/R|≤3%,|△B/B|≤1%; and test |△R/R|≤3%,|△B/B|≤1%;
4.2低温存储(Low temperature storage)
将传感器存放于-50℃-±5℃干燥环境中,1000hrs后,测试其电阻值R25、B值,
Store in dry still air at –50℃-±5℃for 1000hrs,|△R/R|3%,|△B/B|1%;And test |△R/R|≤3%,|△B/B|≤1%;
4.3冷热冲击试验:
(Thermal shock test)
将传感器存放于-30℃±5℃干燥环境(5mins) 室温环境(1mins) 100℃±5℃干燥环境(5mins) 室温环境(1mins),如此循环1000次后,测试其电阻值R25,B值,
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