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GENERAL |
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The RT / RL
series of non inductive, ceramic composite resistors are ideal for circuitry
associated with surges, high peak power or high energy, replacing carbon
composition resistors which can be difficult to source. |
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They offer
enhanced performance in high voltage power supplies, R-C snubber circuits and inrush
limiters.
In pulsed
applications, these compact resistors distribute the energy uniformly
throughout their structure, resulting in low thermal stress. The result is
increased reliability, and in many cases reduced size, compared to wire or
film types. |
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The
solvent-resistant epoxy coating allows operation in almost any
environment, and the choice of axial or radial lead construction
offers convenient use. |
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Technical Specifications |
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PART
NUMBER |
STYLE |
RESISTANCE
RANGE |
IMPULSE
VOLTAGE |
AVG.
POWER |
ENERGY |
L max |
D max |
LEADS |
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(Ohms) |
(Volts) |
(Watts) |
(Joules) |
(mm) |
(mm) |
(AWG) |
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RT515AXXXL |
Axial |
22 - 68K |
3500 |
1.0 |
30 |
15.5 |
5.0 |
20 |
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RT818AXXXL |
Axial |
10 - 47K |
7500 |
2.0 |
70 |
18.5 |
8.0 |
20 |
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RL818AXXXL |
Radial |
18 - 47K |
7500 |
2.0 |
70 |
18.5 |
8.0 |
20 |
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NOTES |
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Resistance: E6 Standard
Values, +/- 20% |
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Impulse Voltage: In air,
1.2/50 µs waveform |
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Avg. Power: Free air, 40
˚C ambient |
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Energy: Single Impulse |
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TECHNICAL DATA |
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PARAMETER |
MAXIMUM ΔR |
TEST METHOD |
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Life Test |
+ 5.0% |
MIL-STD-202F, method
108A. except 25˚C. 1000 hrs. @ rated power: 1.5 hrs. ON, 0.5 hrs. OFF |
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Single Pulse Energy |
+/- 1.5% |
Single 1s duration pulse
of 100% Rated Energy |
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Short-time Overload |
+/- 2.5% |
5x Rated Power. 2s ON,
5s OFF. 5 cycles. |
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Long-term High Temp. |
+/- 2.0% |
1000 hours @ 150˚C |
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Thermal Shock Cycle |
+/- 2.0% |
MIL-STD-202F, method
107D. -55˚C to +125˚C. 5 cycles. |
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Moisture Resistance |
+/- 1.0% |
90% - 95% rh @ 40˚C,
1000 hrs. |
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T. C. R. |
+/- 1500 ppm |
Two point measurement,
20˚C and 150˚C |
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ORDERING INFORMATION |
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RX |
D |
LL |
X |
XXX |
X |
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Resistor Series |
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Tolerance |
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Diameter (mm) |
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K = +/-
10%, L = +/- 20% |
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Length (mm) |
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Resistance, 2 digits + multiplier |
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Lead Style (RL): 'A' = Crimped, 'D'
= Straight |
Example:
331 = 330 Ohms |
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