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V1.0

05/01/21

Cement Fixed Resistors

Axial Leaded

Newark.com/multicomp-pro

Farnell.com/multicomp-pro

Element14.com/multicomp-pro

Characteristics

Limits

Test Methods

(JIS C 5201-1)

Solderability

95% coverage Min.

The area covered with a new, smooth clean , shiny

and continuous surface free from concentrated pin-

holes.

Test temp. of solder : 245°C ±5°C

Dwell time in solder : 2 to 3 secs.

Soldering temp.

reference

Electrical characteristics shall be satis-

fied. Without distinct deformation in

appearance.

(95 % coverage Min.)

The leads immersed into solder bath to 3.2 to 4.8mm.

from the body. Permanent resistance change shall be

checked.

Wave soldering condition: (2 cycles Max.)

Pre-heat : 100 ~ 120°C, 30 ±5sec.

Suggestion solder temp.: 235 ~ 255°C, 10 sec. (Max.)

Peak temp.: 260°C

Hand soldering condition:

Hand Soldering bit temp. : 380 ±10°C

Dwell time in solder : 3 +1/-0 sec.

Resistance to soldering

heat

Resistance change rate is ±(1% + 0.05Ω)

Max. with no evidence of mechanical

damage

Permanent resistance change when leads immersed

to 3.2 to 4.8 mm from the body in 350°C ± 10°C

solder for 3 ±0.5 secs.

Temperature cycling

Resistance change rate is ±(2% + 0.05Ω)

Max. with no evidence of mechanical

damage

Resistance change after continuous

5 cycles for duty shown below:

Step

Temperature

Time

1

-55°C ±3°C

30 mins

2

Room temp.

10~15 mins

3

+155°C ±2°C

30 mins

4

Room temp.

10~15 mins

Load life in humidity

Resistance value

∆R/R

Resistance change after 1,000 hours operating at

RCWV with duty cycle of (1.5 hours “on”, 0.5 hour

“off”) in a humidity test chamber controlled at

40°C ± 2°C and 90 to 95 % relative humidity

Wire-wound

±5%

Power film:

﹤100kΩ

±5%

≥100kΩ

±10%

Load life

Resistance value

∆R/R

Permanent resistance change after 1,000 hours oper-

ating at RCWV with duty cycle of (1.5 hours “on”, 0.5

hour “off”) at 70°C ±2°C ambient

Wire-wound

±5%

Power film:

﹤100kΩ

±5%

≥100kΩ

±10%