CEMENT FIXED RESISTORS
•
•
•
•
•
Self extinguishing
Excellent flame and moisture resistance
Extremely small sturdy and mechanically safe
Non-inductive types available for all Royal Ohm Cement Resistors
Too low or too high ohmic values on Wire-wound & Power Film type can be supplied on a case to case basis
Ordering Procedure: (Ex.: PRW 5W, 5%, 100Ω, B/B)
P
R
W
0
5
W
J
P
1
0
1
B
0
0
Resistor Type:
PRW0 = PRW; PRWA = PRWA;
PRWC = PRWC; PRM0 = PRM;
PRMA = PRMA; PRMB = PRMB;
PRS0 = PRS;
PRVA = PRVA;
PRVB = PRVB; PZ1A = PRZA-1;
PZ2A = PRZA-2; PZ3A = PRZA-3;
PRZC = PRZC; PRZD = PRZD;
PRU0 = PRU;
PRT0 = PRT;
PDM0 = PDM; PRWI = PRWI
Wattage:
2W = 2W
3W = 3W
4W = 4W
5W = 5W
7W = 7W
AW = 10W
BW = 11W
HW = 17W
FW = 15W
20 = 20W
25 = 25W
30 = 30W
40 = 40W
Resistance Value:
E-24 series:
1
st
digit denotes type of the
product:
W = Wire - wound type
P = Power film type
2
nd
& 3
rd
digits are the significant
figures of the resistance
4
th
digit denotes number of zeros:
“J”- 0.1, “K”- 0.01, “L”- 0.001
Ex.
4Ω7 ~ W47J
Tolerance:
J = ±5%,
K = ±10%
Packing Type:
B =Bulk / Box
Packing Qty:
* More explanation on part no, please see details on pages 80-81.
0 = for Bulk / Box packing
Special Feature:
0 = Standard product
I = Non-Inductive
Temperature coefficient
Short-time overload
Dielectric withstanding voltage
Terminal strength
Solderability
Temperature cycling
Humidity (Steady State)
Load life in humidity
< 20Ω: ±400PPM/°C;
≥
20Ω: ±350PPM/°C
∆R/R ≤
±(5.0% + 0.05Ω), with no evidence of mechanical damage.
No evidence of flashover, mechanical damage, arcing or insulation breakdown.
No evidence of mechanical damage.
Min. 95% coverage
∆R/R ≤
±(2.0% + 0.05Ω), with no evidence of mechanical damage.
∆R/R ≤
±(5.0% + 0.05Ω), with no evidence of mechanical damage.
For Wire-wound range, the
∆R/R
is ±5%
For Power film range, <100KΩ, the
∆R/R
is ±5%
For Power film range,
≥100KΩ,
the
∆R/R
is ±10%
Load life
For Wire-wound range, the
∆R/R
is ±5%
For Power film range, <100KΩ, the
∆R/R
is ±5%
For Power film range,
≥100KΩ,
the
∆R/R
is ±10%
Resistance to soldering heat
∆R/R
±(1.0% + 0.05Ω), with no evidence of mechanical damage.
*More details, please see pages 78-79.
Page 36
2007 - 2008
CEMENT FIXED RESISTORS
Dimension (mm)
Part No.
Style
W±1 D±1
6
7
8
10
10
10
12.5
14.5
14.5
6
7
8
9
9
9
11.5
13.5
13.5
Resistance Range
Wire-
Wound
1Ω ~ 27Ω
0.1Ω ~ 27Ω
0.1Ω ~ 39Ω
0.1Ω ~ 47Ω
0.1Ω ~ 680Ω
0.1Ω ~ 910Ω
1Ω ~ 1KΩ
2Ω ~ 1.2KΩ
2Ω ~ 1.2KΩ
L ± 1 d ± 0.05 H ± 5
14
18
22
22
35
49
49
60
64
0.60
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
25
28
32
35
35
35
35
35
35
Power
Film
28Ω ~ 33KΩ
28Ω ~ 33KΩ
40Ω ~ 56KΩ
48Ω ~ 100KΩ
681Ω ~ 200KΩ
911Ω ~ 200KΩ
PRW01W
PRW02W
PRW – 1W
PRW – 2W
PRW – 3W
PRW – 5W
PRW – 7W
PRW – 10W
PRW – 15W
PRW – 20W
PRW – 25W
(1) PRW Type
PRW03W
PRW05W
PRW07W
PRW0AW
PRW0FW
PRW020
PRW025
(1-1) PRWA Type
Part No.
PRWA2W
PRWA3W
PRWA5W
PRWA7W
PRWAAW
Dimension (mm)
Style
PRWA - 2W
PRWA - 3W
PRWA - 5W
PRWA - 7W
PRWA -10W
Resistance Range
Wire-
Wound
0.1Ω ~ 27Ω
0.1Ω ~ 39Ω
0.1Ω ~ 47Ω
0.1Ω ~ 680Ω
0.1Ω ~ 910Ω
W ± 1 D ± 1 L ± 1 d ± 0.05 H ± 5
7
8
10
10
10
7
8
9
9
9
18
22
22
35
49
0.75
0.75
0.75
0.75
0.75
28
32
35
35
35
Power
Film
28Ω ~ 33KΩ
40Ω ~ 56KΩ
48Ω ~ 100KΩ
681Ω ~ 200KΩ
911Ω ~ 200KΩ
(1-2) PRWC Type
Part No.
Style
Dimension (mm)
W ± 1 D ± 1 L ± 1 d ± 0.05 H ± 5
PRWC1W
PRWC2W
PRWC3W
PRWC5W
PRWC7W
PRWC - 1W
PRWC - 2W
PRWC - 3W
PRWC - 5W
PRWC - 7W
5.5
6
6
6
9
5.5
6
6
6
9
12
18
20
25
25
0.60
0.75
0.75
0.75
0.75
25
28
28
35
35
Resistance Range
Wire-
Wound
1Ω ~ 27Ω
1Ω ~ 27Ω
1Ω ~ 27Ω
1Ω ~ 200Ω
1Ω ~ 200Ω
Power
Film
28Ω ~ 33KΩ
28Ω ~ 33KΩ
28Ω ~ 33KΩ
201Ω ~ 100KΩ
201Ω ~ 100KΩ
Derating Curve
Heat Rise Chart
2007 - 2008
Page 37
CEMENT FIXED RESISTORS
(2) PRM Type
Heat Rise Chart
Dimension (mm)
Part No.
Style
W ± 1 D ± 1 L ± 1 d ± 0.05 P ± 1
PRM02W
PRM03W
PRM05W
PRM07W
PRM0AW
PRMA5W
PRMAAW
PRMB7W
PRM-2W
PRM-3W
PRM-5W
PRM-7W
PRM-10W
PRMA-5W
PRMA-10W
PRMB-7W
11.5
12.5
12.5
12.5
12.5
12.5
16
12.5
7.5
8.5
9
9
9
9
12
9
20
25
25
38
50
25
35
38
0.75
0.75
0.75
0.75
0.75
0.75
0.75
0.75
5
5
5
5
5
7.5
7.5
5
Resistance Range
Wire-
Wound
0.1Ω ~ 27Ω
0.1Ω ~ 39Ω
0.1Ω ~ 47Ω
0.1Ω ~ 680Ω
0.1Ω ~ 910Ω
0.1Ω ~ 47Ω
0.1Ω ~ 560Ω
0.1Ω ~ 680Ω
Power Film
28Ω ~ 33KΩ
40Ω ~ 56KΩ
48Ω ~ 100KΩ
681Ω ~ 200KΩ
911Ω ~ 200KΩ
48Ω ~ 100KΩ
561Ω ~ 100KΩ
681Ω ~ 200KΩ
(3) PRS Type
Derating Curve
Heat Rise Chart
Part No.
PRS05W
PRS07W
PRS0AW
PRS0FW
PRS020
Recommended Hole
7W, 10W, 15W
PRS025
Style
W
PRS-5W
PRS-7W
PRS-10W
PRS-15W
PRS-20W
PRS-25W
10
10
10
12.5
14.5
14.5
Dimension (mm) ± 1
D
9
9
9
11.5
13.5
13.5
Resistance Range
P
5
10
10
11
10
10
L
22
35
49
49
60
64
Wire-wound
0.1Ω ~ 47Ω
0.1Ω ~ 680Ω
0.1Ω ~ 910Ω
1Ω ~ 1KΩ
1Ω ~ 3.4KΩ
1Ω ~ 3.4KΩ
Power Film
48Ω ~ 100KΩ
681Ω ~ 200KΩ
911Ω ~ 200KΩ
***PRS 5W, 7W, 10W, 15W
Recommended Hole
5W
***PRS 20W, 25W
Recommended Hole
20W, 25W
2007 - 2008
Page 38
CEMENT FIXED RESISTORS
(4) PRZA-1, PRZA-2, PRZA-3, PRZC, PRZD Type
PRZA-1, PRZA-2, PRZA-3, PRZC, PRZD
PRZA-1, PRZA-2, PRZA-3
PRZC, PRZD
Recommendable Hole
Power Rating
at 70°C
Dimension (mm)
P
PRZA-1, PRZA-2, PRZA-3
5W
7W
PRZC, PRZD
9.5 / 15
22
10W
15W
32 / 35
32
20W
45
2007 - 2008
Page 39
CEMENT FIXED RESISTORS
Part
No.
Power
Rating Type
at 70°C
PRZA-1
Dimension (mm)
W±1
D±1
L
25 ± 1
27 ± 1
P ± 1.5
9.5
15
15
15
*15
15
22
22
*22
22
32 / 35
32 / 35
*32 / *35
32 / 35
32
32
*32
45
45
*45
7
7
7
7
7
7
7
7
7
7
7
7
10
10
10
10
10
10
1.6
1.3
1.5
1.5
1.6
1.6
1.5
1.5
1.6
1.6
1.5
1.5
3
3
2
3
3
2
5
5
3.5
3.5
3.5
3.5
3.5
3.5
39
39
36
24
24
39
36
24
24
39
36
24
35
47
47
35
47
47
25
25
22
10
10
25
22
10
10
25
22
10
15
30
30
15
30
30
T
1
± 1
T
2
±0.2 T
3
±0.5
H
1
+2
-1
Resistance Range
H
2
+2
10
-1
Wire-wound
Power Film
PZ1A5W
10
9
7
1.6
24
PZ2A5W
PZ3A5W
PRZC5W
PRZD5W
PZ1A7W
PZ2A7W
PRZC7W
PRZD7W
PZ1AAW
PZ2AAW
PRZCAW
PRZDAW
PZ1AFW
PZ2AFW
PRZCFW
PZ1A20
PZ2A20
PRZC20
5W
PRZA-2
PRZA-3
PRZC
PRZD
PRZA-1
10
10
10
10
10
10
10
10
10
10
10
10
12.5
12.5
12.5
12.5
12.5
12.5
9
9
9
9
9
9
9
9
9
9
9
9
11.5
11.5
11.5
13.5
13.5
13.5
27 ± 1
27 ± 1
27 ± 1
27 ± 1
35 ± 1
35 ± 1
35 ± 1
35 ± 1
48 ± 1.5
48 ± 1.5
48 ± 1.5
48 ± 1.5
48 ± 1.5
48 ± 1.5
48 ± 1.5
63 ± 1.5
63 ± 1.5
63 ± 1.5
0.1Ω ~ 120Ω 121Ω ~ 56KΩ
7W
PRZA-2
PRZC
PRZD
PRZA-1
0.1Ω ~ 560Ω 561Ω ~ 100KΩ
10W
PRZA-2
PRZC
PRZD
PRZA-1
1Ω ~ 820Ω
821Ω ~ 100KΩ
15W
PRZA-2
PRZC
PRZA-1
1Ω ~ 1KΩ
20W
PRZA-2
PRZC
2Ω ~ 1.2KΩ
*PRZC Type Pitch Tolerance = +2 ~ +6
(5) PRVA Type
Heat Rise Chart (PRVA / PRVB)
(6) PRVB Type
Page 40
2007 - 2008
