Product Main

Specifications

1.Visual check the ceramic cage

2.Sleeve cutting and inserting

3.Resistor terminal bending 90 (1)

4.Fill the ceramic cage with cemnet mix(2)

5.After natural dring, heating the resistors in oven

6.Staming the resitanve value and the Power

7.Check ,package,and Stock

III. Electrical Characteristics

Item

Performance requirement

Test methods

Temperature Coefficient:

Wire coiling:
-300ppm/℃≤ a ≤+300ppm/℃
Oxide rod:
-350ppm/℃≤ a ≤+350ppm/℃

JIS5202-5.2
-55℃ to +155℃
T.C.R=(R2-R1)×10?6/ R1 ×(T2-T1)(PPM/℃)
R1:Resistance value at room temperature(T1)
R2:Resistance value
at room temperature+100℃（T2)

Short time overload:

ΔR≤±（2% R0+0.1Ω)

JIS5202-5.5
2.5times RCWV for 5 seconds

Resistance to soldering heat:

ΔR≤ ±（1%R0+0.05Ω)

JIS5202-6.4
350℃±10℃ for3±0.5 seconds

Solderability:

The area of soldering is over 95%

JIS5202-6.5
235℃for5±0.5 seconds

Temperature cycling:

ΔR≤± (5% R0+0.1Ω)

JIS5202-7.4
→65℃→room temp. →150℃→room temp.
for 5 cycles

Load life in moisture:

ΔR≤±（5% R0+0.1Ω)

JIS5202-7.9
40±2℃,90～95% RH at RCWV for 1000 hrs.
(1.5 hrs. on, 0.5 hrs. off)

Nonflammability:

No visible flame

SJ3272-4.2