|
|
■
Dual-functions：
resistance
and fusing
|
|
■
Excellent fuse feature
，low
power and rapid fuse time
|
|
RX
712A
wire-wounded resistors
|
|
|
★
Standard
▲
Q/RU179-2002
Type RX
712A
wire-wound resistor specification
★
Dimension
(mm)
|
|
|
|
|
Type
|
Dmax
|
Lmax
|
dmax
|
weight
|
|
RX
712A
-2
|
3.0
|
11.0
|
0.6
|
<
0.4g
|
|
RX
712A
-21
|
4.2
|
13.0
|
0.86
|
<
1.2g
|
|
|
★
Main specification
|
|
Type
|
Rated
power
|
Resistor
(Ω)
|
Resistor
tolerance
(%)
|
TCR
(±10-6/℃)
|
|
RX
712A
-2
|
2W
|
3
|
±2
|
≤150
|
|
RX
712A
-21
|
2W
|
4
|
|
|
★
derating curve
|
|
|
|
★
Main inspection, items, methods & requirements
|
|
Items
|
Requirements
|
Methods
|
|
Solder
ability
|
Solder
can free flow
|
235±
5℃
2±0.5S
|
|
Constant
damp-heat
|
△R≤±(1%+0.05Ω)
|
40℃
humidity
(90~95)% 96h
|
|
Temperature
change
|
△R≤±(0.5%+0.05Ω)
|
-55℃
~+
155℃
3 time
|
|
Mechanical
load
|
△R≤±(2%+0.05Ω)
|
viberation50Hz、
150m
/s2
30min
sweep-frequency100Hz~2000Hz、
150m
/s2
13min
shock
750m
/s2 18
time
|
|
Terminal
strength
|
△R≤±(0.5%+0.05Ω)
|
10N
10S(φ0.6),20N 10S(φ0.8)
|
|
Over-load
|
△R≤0.1Ω
|
5.5A
0.2S(RX
712A
-21)
|
|
Fuse
characteristic
|
RX
712A
-2
|
Break
in（0.05~2）S
|
5A
&
7.3A
|
|
RX
712A
-21
|
≥0.8S
break
|
5.5A
|
|
|
Specification
are subject to change without notice.
|
