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| AT Series |
Clyindrical High Voltage, Low TCR & VCR
Resistors, Thick Film, Non-Inductive |
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High Voltage Non-Inductive Resistors for HV Dividers, Precision HV circuits
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| Micro-Ohm offers our AT series to meet applications with very Low TCR and Low VCR requirements, especially for High Voltage - Functional Non-Inductive Divider Sets, High Voltage Precision Measurement Systems. |
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| Epoxy conformal coat for excellent humidity protection |
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Resistance Tolerance: 0.5%, 1%, 2%, 5%
(0.1% up to 100MΩ on AT02, AT03 & AT05) |
| Temperature Coefficient of Resistance: 75PPM/°C std. and (20ppm/°C, 35ppm/°C, 50ppm/°C, 60ppm/°C, 85ppm/°C as special) |
| Load Life Stability of 0.25% per 1000 hours at rated power |
| Resistance Range: 100KΩ to 100TΩ |
| Various Models with Voltage Ratings from 2.5kV to 48kV in free air. |
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| Application Guide |
| Automated Test (ATE) |
Medical (Imaging) |
Ion Source |
| Chromatography (Gas) |
Medical (Radiation Therapy) |
Military, Radar, Laser, Plasma |
| Measurements (High Voltage) |
Electric Power Transmission HV |
HV Capacitor Charging, Discharging |
| Medical Blood Analyzers |
Corona Generators |
Multichannel Analyzers |
| Ozone Generating |
Detectors |
Nuclear Instrumentation |
| Electron Beam |
Pulse Generators |
Surface Analysis |
| CT, MRI |
Electrophoresis |
Image Intensifier |
| Piezo, Focusing (Poling) |
High Voltage Dividers |
Stress Testing |
| Agricultural Sensors |
Klystron, Magnetron, Microwave |
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Dimensions
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Specifications |
| Resistance Tolerance: 0.5%, 1%, 2%, 5%, 10% Tolerances from 100K to 100M on AT07, AT1 & AT05 |
| Temperature Range: -55°C to +195°C. |
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Temperature Coefficient of Resistance: Std. 75ppm/°C referenced to 25°C,  R taken at -25°C, and +70°C. Other TCR on request. (20ppm/°C, 35ppm/°C, 50ppm/°C, 60ppm/°C, 85ppm/°C) |
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Overload/Voltage: 5 times stated power with applied voltage not to exceed 1.5 times Max. continuous operating voltage for 5 seconds, overload/overvoltage R, 0.2% max. |
| Thermal Shock: Mil-Std-202, Method-107, Cond. C, R, 0.2% max. |
| Load Life: 1,000 hours at rated power R 2% max. |
| Moisture Resistance: Mil-Std-202, Method-106, R, 0.25% max. |
| Lead Material: Tinned plated copper |
| Insulation Resistence: 10,000 MΩ Min. |
| Tinned Termination Cap: Available AT3 through AT9 |
| Resistive Material: Thick Film |
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Model
No. |
Wattage
@ 25°C |
Max.
Continuous Oper.
Voltage[kV] |
Std. Resistance
[Ohm] |
Dimensions in
milimeters (inches) |
| Min. |
Max. |
A |
B |
C |
| AT02 |
0.2 |
2.0 |
100k |
500M |
15 ±1.5
(.590) |
5.0 ±1.5
(.196) |
0.8 |
| AT03 |
0.3 |
2.5 |
100k |
500M |
19 ±1.5
(.748) |
5.0 ±1.5
(.196) |
0.8 |
| AT05 |
0.5 |
4.0 |
100k |
500M |
25.4 ±1.5
(1.0) |
5.0 ±1.5
(.196) |
0.8 |
| AT1.5 |
1.5 |
4.0 |
100k
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500M |
24.0 ±1.5
(.944) |
8.0 ±1.0
(.314) |
1.0 |
| AT2.5 |
2.5 |
10.0 |
100k |
1G |
39.0 ±1.5
(1.54) |
8.0 ±1.0
(.314) |
1.0 |
| AT3.0 |
3.0 |
15.0 |
100k |
1G |
52.0 ±1.5
(2.04) |
8.0 ±1.0
(.314) |
1.0 |
| AT4.5 |
4.5 |
22.5 |
1M |
1G |
76.0 ±2
(2.99) |
9.0 ±1.0
(.354) |
1.0 |
| AT6.0 |
6.0 |
32.0 |
1M |
1G |
102.0 ±2
(4.01) |
9.0 ±1.0
(.354) |
1.0 |
| AT7.0 |
7.0 |
35.0 |
1M |
1G |
117.0 ±2
(4.6) |
9.0 ±1.0
(.354) |
1.0 |
| AT7.5 |
7.5 |
37.0 |
1M |
1G |
127.0 ±2
(5.0) |
9.0 ±1.0
(.354) |
1.0 |
| AT8.0 |
8.0 |
40.0 |
1M |
1G |
137.0 ±2
(5.4) |
9.0 ±1.0
(.354) |
1.0 |
| AT9.0 |
9.0 |
48.0 |
1M |
100T |
152.0 ±1.5
(5.98) |
9.0 ±1.0
(.354) |
1.0 |
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| ORDERING INFORMATION |
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| Example: 3W 1meg 5% |
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AT3.0
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1M
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J
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Type
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Resistance
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Tolerance
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F = 1%
G = 2%
J = 5%
K = 10%
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