贴片保险丝PTC技术支持

“万和”自恢复保险丝（贴片式）SMD技术支持

WHSMD Technical Support

符号定义 Definition

符号Sign 说明 Definition
Vmax WHSMD在阻断状态下所承受的最大电压 Maximum voltage device can withstand without damage at it rated current
Imax WHSMD能承受的最大电流 Maximum fault current device can withstand without damage at rated voltage
Ih WHSMD在25℃静止空气的的最大工作电流 Hold current-maximum current at which the device will not trip at 25℃ still air
It WHSMD在25℃静止空气中启动保护的最小电流 Trip current-minimum current at which the device will always trip at still air
Pd WHSMD在25℃静止空气中动作时消耗的功率 Power dissipation when device is in the tripped state at 25℃ still air environment at rated voltage
Rmin WHSMD在工作前的初始最小阻值 Minimum device resistance at 25℃ prior to tripping
R1max WHSMD回流焊后在25℃静止空气中冷却1小时后的最大电阻值 Maximum resistance of device at 25℃ measured one hour post reflow

测试项目 Test

测试项目 测试方法条件 电阻变化
Test Conditions Resistance change
高温老化 85℃，1000小时 典型±10%
Passive aging +85℃,1000hrs ±10% typical
湿热老化 85℃，相对湿度85%，168小时 典型±10%
Humidity aging +85℃,85%R.H.,168hrs ±10% typical
热冲击 -40℃到85℃，20次 典型±33%
Thermal shock +85℃ to -40℃,20 times ±33% typical
耐溶剂性能 MIL-STD-202，方法215 无变化
Resistance to solvent MIL-STD-202,Method 215 No change
抗震性 MIL-STD-202，方法201 无变化
Vibration MIL-STD-202,Method 201 No change
工作温度范围：-40℃~+85℃
Ambient operating conditions: -40℃ to +85℃
产品保护状态下表面最高温度为125℃
Maximum surface temperature of the device in the tripped state is 125℃
EIA标准载带尺寸图和标准载盆样图

载盘参数 Tape and Reel Specifications (mm)

WHSMD 2920Series 1812Series 1210Series 1206Series 0805Series
Sign EIA 481-1
W 16.0±0.3 12.0±0.3 8.0±0.2 8.15±0.2 8.0±0.2
P0 4.0±0.10 4.0±0.10 4.0±0.10 4.0±0.10 4.0±0.10
P1 8.0±0.10 8.0±0.10 4.0±0.10 4.0±0.10 4.0±0.10
P2 2.0±0.05 2.0±0.05 2.0±0.05 2.0±0.05 2.0±0.05
A0 5.74±0.10 3.55±0.10 2.82±0.10 1.95±0.10 1.45±0.10
B0 8.02±0.10 5.10±0.15 3.46±0.10 3.45±0.10 2.30±0.10
D0 1.55±0.05 1.55±0.05 1.55±0.05 1.55±0.05 1.60±0.05
F 7.5±0.10 5.5±0.05 3.5±0.05 3.5±0.05 3.5±0.05
E1 1.75±0.10 1.75±0.10 1.75±0.10 1.75±0.10 1.75±0.10
T 0.22±0.05 0.22±0.05 0.22±0.05 0.22±0.05 0.22±0.05
K0 0.87±0.10 0.87±0.10 0.87±0.10 0.87±0.10 0.91±0.10
1.02±0.10 1.04±0.10 1.02±0.10 1.02±0.10 1.30±0.10
1.50±0.10 1.50±0.10 1.50±0.10 1.50±0.10  
Amax 178 178 178 178 178
Nmin 50 50 50 50 50
W2 16.5±1.0 13.4±1.0 9.0±0.5 9.0±0.5 9.0±0.5
W1max 22.4 19.4 13.1 13.1 13.1

包装数量 Packing

2920
Series		 Pcs/Reel 1812
Series		 Pcs/Reel 1210
Series		 Pcs/Reel 1206
Series		 Pcs/Reel 0805
Series		 Pcs/Reel
2920-030 2000 1812-010 2000 1210-005 4500 1206-005 5000 0805-005 5000
2920-050 2000 1812-014 2000 1210-010 4500 1206-010 5000 0805-010 5000
2920-075 2000 1812-020 2000 1210-020 4500 1206-020 5000 0805-020 5000
2920-100 2000 1812-030 2000 1210-035 4500 1206-025 5000 0805-025 5000
2920-125 2000 1812-050 2000 1210-050 4500 1206-035 5000 0805-035 5000
2920-150 2000 1812-075 2000 1210-075 4500 1206-050 5000 0805-050 5000
2920-185 2000 1812-110 2000 1210-110 4500 1206-075 5000 0805-075 3000
2920-200 2000 1812-125 2000 1210-150 3500 1206-100 3500 0805-100 3000
2920-250 2000 1812-150 2000 1210-200 3000 1206-110 3500 0805-110 3000
2920-260 2000 1812-160 2000 1210-260 3000 1206-150 3000 - -
2920-300 2000 1812-200 2000 - - 1206-200 3000 - -
- - 1812-260 2000 - - 1206-260 3000 - -
- - 1812-300 1500 - - - - - -

SMD2920  SMD1812  SMD1210  SMD1206  SMD0805

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  • 文章出处 - 万瑞和电子 | 作者 - 管理员 | 人气 - | 发表时间 - 2013-09-26 09:20:43

  • “万和”自恢复保险丝（贴片式）SMD技术支持

    WHSMD Technical Support

    符号定义 Definition

    符号Sign 说明 Definition
    Vmax WHSMD在阻断状态下所承受的最大电压 Maximum voltage device can withstand without damage at it rated current
    Imax WHSMD能承受的最大电流 Maximum fault current device can withstand without damage at rated voltage
    Ih WHSMD在25℃静止空气的的最大工作电流 Hold current-maximum current at which the device will not trip at 25℃ still air
    It WHSMD在25℃静止空气中启动保护的最小电流 Trip current-minimum current at which the device will always trip at still air
    Pd WHSMD在25℃静止空气中动作时消耗的功率 Power dissipation when device is in the tripped state at 25℃ still air environment at rated voltage
    Rmin WHSMD在工作前的初始最小阻值 Minimum device resistance at 25℃ prior to tripping
    R1max WHSMD回流焊后在25℃静止空气中冷却1小时后的最大电阻值 Maximum resistance of device at 25℃ measured one hour post reflow

    测试项目 Test

    测试项目 测试方法条件 电阻变化
    Test Conditions Resistance change
    高温老化 85℃，1000小时 典型±10%
    Passive aging +85℃,1000hrs ±10% typical
    湿热老化 85℃，相对湿度85%，168小时 典型±10%
    Humidity aging +85℃,85%R.H.,168hrs ±10% typical
    热冲击 -40℃到85℃，20次 典型±33%
    Thermal shock +85℃ to -40℃,20 times ±33% typical
    耐溶剂性能 MIL-STD-202，方法215 无变化
    Resistance to solvent MIL-STD-202,Method 215 No change
    抗震性 MIL-STD-202，方法201 无变化
    Vibration MIL-STD-202,Method 201 No change
    工作温度范围：-40℃~+85℃
    Ambient operating conditions: -40℃ to +85℃
    产品保护状态下表面最高温度为125℃
    Maximum surface temperature of the device in the tripped state is 125℃
    EIA标准载带尺寸图和标准载盆样图

    载盘参数 Tape and Reel Specifications (mm)

    WHSMD 2920Series 1812Series 1210Series 1206Series 0805Series
    Sign EIA 481-1
    W 16.0±0.3 12.0±0.3 8.0±0.2 8.15±0.2 8.0±0.2
    P0 4.0±0.10 4.0±0.10 4.0±0.10 4.0±0.10 4.0±0.10
    P1 8.0±0.10 8.0±0.10 4.0±0.10 4.0±0.10 4.0±0.10
    P2 2.0±0.05 2.0±0.05 2.0±0.05 2.0±0.05 2.0±0.05
    A0 5.74±0.10 3.55±0.10 2.82±0.10 1.95±0.10 1.45±0.10
    B0 8.02±0.10 5.10±0.15 3.46±0.10 3.45±0.10 2.30±0.10
    D0 1.55±0.05 1.55±0.05 1.55±0.05 1.55±0.05 1.60±0.05
    F 7.5±0.10 5.5±0.05 3.5±0.05 3.5±0.05 3.5±0.05
    E1 1.75±0.10 1.75±0.10 1.75±0.10 1.75±0.10 1.75±0.10
    T 0.22±0.05 0.22±0.05 0.22±0.05 0.22±0.05 0.22±0.05
    K0 0.87±0.10 0.87±0.10 0.87±0.10 0.87±0.10 0.91±0.10
    1.02±0.10 1.04±0.10 1.02±0.10 1.02±0.10 1.30±0.10
    1.50±0.10 1.50±0.10 1.50±0.10 1.50±0.10  
    Amax 178 178 178 178 178
    Nmin 50 50 50 50 50
    W2 16.5±1.0 13.4±1.0 9.0±0.5 9.0±0.5 9.0±0.5
    W1max 22.4 19.4 13.1 13.1 13.1

    包装数量 Packing

    2920
    Series    		 Pcs/Reel 1812
    Series    		 Pcs/Reel 1210
    Series    		 Pcs/Reel 1206
    Series    		 Pcs/Reel 0805
    Series    		 Pcs/Reel
    2920-030 2000 1812-010 2000 1210-005 4500 1206-005 5000 0805-005 5000
    2920-050 2000 1812-014 2000 1210-010 4500 1206-010 5000 0805-010 5000
    2920-075 2000 1812-020 2000 1210-020 4500 1206-020 5000 0805-020 5000
    2920-100 2000 1812-030 2000 1210-035 4500 1206-025 5000 0805-025 5000
    2920-125 2000 1812-050 2000 1210-050 4500 1206-035 5000 0805-035 5000
    2920-150 2000 1812-075 2000 1210-075 4500 1206-050 5000 0805-050 5000
    2920-185 2000 1812-110 2000 1210-110 4500 1206-075 5000 0805-075 3000
    2920-200 2000 1812-125 2000 1210-150 3500 1206-100 3500 0805-100 3000
    2920-250 2000 1812-150 2000 1210-200 3000 1206-110 3500 0805-110 3000
    2920-260 2000 1812-160 2000 1210-260 3000 1206-150 3000 - -
    2920-300 2000 1812-200 2000 - - 1206-200 3000 - -
    - - 1812-260 2000 - - 1206-260 3000 - -
    - - 1812-300 1500 - - - - - -
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