Ceramic Case Resistors –
Wirewound / Metal Oxide
SQP Series
·
·
·
·
2 watts to 20 watts
Resistance 0R1 to 200K
High overload capability
RoHS compliant
Electrical Data
SQP2
Power rating at 70°C
Resistance range - wirewound
Resistance range – oxide
Resistance tolerance
TCR
Isolation voltage
Standard values
Thermal impedance
Ambient temperature range
°C/W
°C
50
45
30
watts
ohms
%
ppm/°C
volts
26
2
0R1-27R
SQP3
3
0R1-39R
40R-150K
SQP5
5
0R1-47R
SQP7
7
0R1-680R
5
<20R: 400
≥20R:
350
1000
E24 preferred
26
21
16
13
-55 to +155
SQP7S
7
1R0-100R
SQP10
10
0R1-910R
SQP15
15
1R0-1K0
SQP20
20
2R0-1K2
1K3-200K
ohms 28R-120K
48R-150K 681R-200K 101R-150K 911R-200K 1K1-200K
No Limiting Element Voltage applies to this series; the Rated Voltage is
√(P.R).
Physical Data
Dimensions (mm) and weight (g)
Type
SQP2
SQP3
SQP5
SQP7
SQP7S
SQP10
SQP15
SQP20
L max.
19
23
23
36
26
50
50
61
W max.
8
9
11
11
10
11
13.5
15.5
H max.
8
9
10
10
10
10
12.5
14.5
f min.
23
30
30
30
30
30
0
30
30
d (±0.1)
0.70
0.70
0.75
0.75
0.75
0.75
0.75
0.75
Wt. nom.
2.2
3.5
5.0
8.2
6.0
11.0
17.4
25.0
f
L
f
W
H
d nom ± 0.05
Min bend radius, all types 1.6 mm
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
04.13
Ceramic Case Resistors –
Ceramic Case Resisters –
Resistors
Wirewound / Metal Oxide
Wirewound / Metal Oxide
SQP Series
SQP Series
Construction
Welwyn Components
A high purity ceramic rod, with force fit end caps onto which is wound a wire element: or a deposited metal oxide film
(depending on value). The element is fitted into a ceramic case with fireproof insulation cement.
Termination Details
Material
Solderability
Strength
The tinned copper lead wires are internally welded to the resistance element end caps.
The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2
The terminations meet the requirements of IEC 86.2.21
Performance Data
Maximum
Load at rated power (1000hrs at 70˚C)
Derating from rated power at 70˚ C
Short term overload (6.25xPr for 5s)
Damp heat steady state (56 days, 40˚C,
Temperature rapid change
Resistance to solder heat
Pulse handling
90% RH)
R%
R%
R%
R%
R%
≤100K:
5% +0.05 ,
See Graph
2% +0.05
2% +0.05
2% +0.05
1% +0.05
Data available by request
>100K:
10%
P
100%
Marking
Type reference, resistance value and tolerance are
legend marked onto the upper surface.
Flammability
The resistor will not burn or emit incandescent
particles under any condition of applied temperature
or overload.
Solvent resistance
The body protection and marking are resistant to all
normal industrial solvents suitable for printed circuits.
50%
0%
-30
T˚C
70
155
275
Ordering Procedure
S
Q
1
1
Type
SQP
2
Size
2
3
5
7
7S
10
15
20
B1
B15
P
3
2
3
Value
E24 = 3 characters
R = ohms
K = kilohms
-
1
K
3
2
J
4
B
5
5
Part Number: SQP3-1K2JB5
(SQP3, 1.2 kilohms ±5%, standard bulk packing)
4
Tolerance
J = ±5%
B5
5
Packing
SQP2
SQP3
SQP5
SQP7
SQP7S
SQP10
SQP15
SQP20
3600/box
3000/box
2400/box
1800/box
2400/box
1500/box
840/box
720/box
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Issue C ·
07.08
07.06
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
© TT electronics plc
04.13
71
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