Characteristics
PHR Series
Nominal
Zero-power
Resistance
Curie
Temperature
Surface
Temperature
Rated
Voltage
Maximum
Voltage
Dimensions
Part No.
Tc (
70
)
Ts (
85
)
R25
(
)
VR(V)
Vmax(V)
A 1(mm)
B
1(mm)
C
0.2(mm)
PHRA1301 P7A4
PHRA1181 P7A4
PHRA1701 P8B7
PHRA2501 P9B7
PHRA3801 B1B7
PHRA2301 B3A4
PHRA2701 B4B7
300
180
700
500
800
300
700
500
100/120
100/120
220/240
220/240
220/240
100/120
220/240
220/240
140
140
270
270
270
140
270
270
16
16
11
11
11
10
12
10
10
6
2.5
2.5
2.5
2.2
2.2
2.2
2.2
2.3
70
80
90
100
110
230
250
255
255
16
90
23.5
19
210
230
240
240
23.5
23.5
36
PHRA4501 B4B7
Note: =Tolerance of R25
Reliability Test
Item
Test Condition / Methods
Standard
TA =LCT TB=UCT
Number of cycles:5
Duration: 30 min
Rapid Change of
Temperature
IEC60068-2-14
Test N
a
T=ln(RTc+25/RTc+10
RTc=2Rmin
) 15
Temperature Coefficient of
Resistance
IEC 60738-1
IEC 60738-1
Temperature: UCT
Duration: 1000 hrs
Endurance at Upper
Category Temperature
Endurance at Maximum
Operating Temperature and
Maximum Voltage
Voltage: Vmax
IEC 60738-1
Temperature: UCT
Duration: 1000 hrs
Voltage: Vmax
Endurance at Room
Temperature: 25
5
IEC 60738-1
Temperature (Cycling)
Number of cycle 10,000 or 100,000
Temperature: 40
5
IEC 60068-2-3
Damp Heat Steady State
Relative humidity of air: 95 98%Rh
Duration: 1000 hrs
Test C
a
THINKING ELECTRONIC INDUSTRIAL Co., LTD.
Issue Date: July, 2004
2
THINKING [ Thinking Electronic Industrial Co.,Ltd ]
