5D-13 datasheet(12/24 Pages) LEIDITECH

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7.2 电气性能

Electrical Characteristics

电气性能

ELECTRICAL CHARACTERISTICS

测试条件/方法

Test Conditions & Method

指标项目

Item

技术要求

Specification

测试条件

/方法

Test Conditions & Methods

额定零功率电阻

Rated Zero-Power Resistance

RN (Ω)

20±20%

环境温度

TA: 25℃±1℃

测试电压

: 1.5VDC

在恒温

TA 条件下，放置1~2 小时后测得阻值RN。

Ambient temp. Range:25℃±1℃(TA).

Testing voltage: 1.5VDC

After placing for 1~2 hours under TA, the

resistance value shall be measured

热耗散系数δ

(mW/℃)

Thermal Dissipation Constant

≥18

在特定的环境温度下，热耗散系数

(δ)为热敏电阻电功率消耗

(ΔP)与本体温度变化量(ΔT)的比值.

The thermal dissipation constant( δ ) could becalculated by the

ratio of a change in powerdissipation(ΔP) of the thermistor to a

changein temperature( Δ T) of the thermistor at aspecified

ambient temperature

热时间常数

(s)

Thermal Time Constant

≤85

热时间常数

(τ)为在零功率条件下，热敏电阻的温度下降到其

最初温度与最终温度之差为

63.2% 时所需要的时间

The time( τ shall be measured within whichthe temperature

change of NTC thermistor isreached at 63.2% of the ambient

temperaturechange under zero power condition

材料常数

Material Constant B

2950±10%

B=T1T2/( T2- T1) ×

(R1/R2)

R1 , R2 分别为T1 , T2 温度下的零功率电阻

R1 , R2 is zero-power resistance at T1 , T2

T1 = 298.15 K(25℃) T2 = 323.15 K(50℃)

最大稳态电流(A)

Max.Steady State Current

无可见损伤

visible mechanical

damage.

RN / RN ≤20%

(ΔR =∣RN-RN'∣)

环境温度

:25℃±2℃Ambient temp. Range.

测试电流

:4.0A Testing Current

20D-15

Rev 2.0 :

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12.01.2019

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