Fusible resistors PNFR25/25H/1W/2W
Dimensions ( mm )
TYPE D
Max.
L 1
max.
L 2
max.
d
(±0.05)
PNFR25 2.5 6.5 7.5 0.55
PNFR25H 2.5 6.5 7.5 0.55
PNFR 1W 3.9 10 12 0.8
PNFR 2W 3.9 10 12 0.8
QUICK REFERENCE DATA
VALUE
DESCRITION PNFR25 PNFR25H PNFR 1W PNFR 2W
resistance range 0.2Ωto 15 ㏀ 0.1Ωto 10 ㏀
resistance tolerance ±10%, ±5%, ±2% ( E24) ±1%, ( E48, E96 series )
temperature coefficient :
R ≤ 4.7Ω
R > 4.7Ω
±250 ppm / ℃
±200 ppm / ℃
±250 ppm / ℃
±200 ppm / ℃
±250 ppm / ℃
±200 ppm / ℃
±250 ppm / ℃
±200 ppm / ℃
rated dissipation
at Tamb = 70 ℃ 0.33 W 0.5 W 1 W 2 W
max. working voltage 250 V 350 V 350 V 500 V
max. overload voltage 400 V 500 V 500 V 700 V
noise : max. 1.5 ㎶/V
basic specifications IEC 60 115-1 and 60 115-2
climatic category (IEC60)
55 / 155 / 56
stability, ∆R/R max. after
load : 1000 hours ± 1% +0.05Ω
± 1% +0.05Ω
± 5% +0.1Ω
± 5% +0.1Ω
climatic tests : ± 1% +0.05Ω
± 1% +0.05Ω
± 3% +0.1Ω
± 3% +0.1Ω
soldering ± 0.25%
+0.05Ω ± 0.25%
+0.05Ω ± 1% +0.05Ω
± 1% +0.05Ω
short time overload ± 0.25% +0.05Ω ± 1% +0.05Ω
R < 1Ω: rated power 25 times ( 30sec. Max.)
fusing characteristic R > 1Ω: rated power 15 times ( 30sec. Max.)
FEATURES
• Overload protection without
risk of fire
• wide range of overload currents.
APPLICATIONS
• TV, Monitor, Audio, Video
DESCRIPTION
A homogeneous film of metal alloy
is Deposited on a high grade ceramic
body. After a laser groove has been
cut in the resistive layer, tined
connecting leads of electrolytic
copper are welded to the end-caps
