Datasheet
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5. Characteristic :
Dielectric No evidence of flashover, Resistors shall be clamped in the trough
withstanding mechanical damage, arcing of a 90° metallic V-block and shall be tested at
voltage or insulation break down AC potential respectively for 60 +10/ -0 secs.
(Sub-clause 4.7)
Natural resistance change per temp.
degree centigrade.
R
2-R1
Temperature
<20: ± 400 PPM/к Max.
x10
6
(PPM/к)
coefficient
20: ± 350 PPM/к Max.
R
1(t2-t1)
R
1: Resistance value at room temperature (t1)
R
2: Resistance value at room temp. plus 100 к (t2)
(Sub-clause 4.8)
Resistance change rate is Permanent resistance change after the
Short time
± (5% + 0.05Ө) Max. with no
application of a potential of 2.5 times RCWV
overload evidence of mechanical damage for 5 seconds
(Sub-clause 4.13)
Direct load :
Resistance to a 2.5 kgs direct load for 10 secs.
in the direction of the longitudinal axis of the
terminal leads
Terminal No evidence of mechanical
Twist test :
strength damage Terminal leads shall be bent through 90 ° at
a point of about 6mm from the body of the
resistor and shall be rotated through 360°
about the original axis of the bent terminal in
alternating direction for a total of 3 rotations
(Sub-clause 4.16)
The area covered with a new , smooth
clean , shiny and continuous surface free
Solderability 95 % coverage Min. from concentrated pinholes.
Test temp. of solder : 245кʳ±ʳ5к
Dwell time in solder : 2 to 3 secs.
(Sub-clause 4.17)
The leads immersed into solder bath to 3.2 to 4.8 mm.
Soldering temp. Electrical characteristics shall be from the body. Permanent resistance change shall be
reference satisfied. Without distinct checked.
deformation in appearance. Wave soldering condition: (2 cycles Max.)
(95 % coverage Min.)
Pre-heat : 100 ~ 120 к, 30 ± 5 sec.
Suggestion solder temp.: 235 ~ 255 к, 10 sec. (Max.)
Peak temp.: 260 ͠
Hand soldering condition:
Hand Soldering bit temp. : 380 ±ʳ˄˃ʳк
Dwell time in solder : 3 +1/-0 sec.
Limits
Characteristics
Cement Fixed Resistors
Test Methods
( JIS C 5201-1 )
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