|
|
 |
ST & STR Pulstor, Thick Film Non-Inductive
Resistors for Plasma & Impulse Circuits |
|
|
|
|
|
|
High Voltage, High Frequency Resistors, Resistance Range up 1 Ohm to 2 Megohms
|
|
|
|
Micro-Ohm offers the "Pulstor" Series resistor to meet pulse and impulse power applications for controlling high pulse energy requirements. This resistor offers impulse energy at high frequency, surge at high voltage and high ohmic values.
|
 |
Resistance Tolerances from 2% to 10% |
|
Various Models for high voltage & high frequency |
|
Non-Inductive High Frequency |
|
High temp. & solvent proof epoxy or glass conformal coat |
|
Resistance Range to 2 megohms |
|
Power Ratings up to 2500 joules at single impulse |
|
|
| Application Guide |
| Cap Charger |
Surge Arrestor |
|
| Plasma Generators |
Soft Starter |
| Pulse Circuitry |
Motor Drives |
| Impulse Circuitry |
Power Supplies |
| Pulse Generators |
Power Conversions |
| Resonant Circuitry / Tanks |
Audio Amp |
| High Surge Energy |
In-Rush Current Limitings |
| Shunt |
Loud Speaker |
| Dynamic Braking |
Inverters |
| SMPS |
UPS |
| Defibrillators |
|
|
|
Axial |
|
 |
| Specifications |
Tolerance:
2%, 5%, 10% |
Temperature Coefficient:
Std. 100ppm/°C ref. to 25°C, from -15°C to +105°C. Other TCR on request. |
Short Time Overload:
10x rated power for 5 seconds on 5 secs off 5 cycles  R 1.5% |
Thermal Shock:
Mil-Std-202, Method-107, Cond. C, R, 2.0% typ. |
Resistance Range:
1 R to 2 Meg |
Load Life:
1,000 hours at rated power R, 5.0% max. |
Repeative High Voltage Impulsing:
10,000 cycles 1 sec. on, 1 sec. off R, 2.0% |
Single High Voltage Impulsing:
at rated energy R, 1.50% typ. |
Moisture Resistance:
Mil-Std-202, Method-106, Cond. C, R, 1.0% max. |
Lead Material:
Tinned Cu. wire
STR 10 & 15 Ni plated brass |
Insulation Resistance:
10,000 Megohms Min. |
Termination Cap Material:
Ni or Plated Brass |
Encapsulation:
High temperature epoxy, silicone or glass |
|
|
| Axial Specifications |
| Model No. |
Power
@ 60°C |
Max. Working Voltage [kV] |
Max Single Impulse Volt [kV]
|
Joules Max at Single Impulse |
Resistance Ohms |
| Min. |
Max. |
| ST2 |
2 |
3.5 |
7 |
300 |
1R0 |
2M |
| ST3.5 |
3.5 |
7 |
14 |
500 |
3R0 |
2M |
| ST5 |
5 |
10 |
20 |
950 |
5R0 |
2M |
The working voltage Limited by Power. Custom R values on request. Allowable impulse energy depends on R-Value. Impulse width  10mSec. |
|
|
| Axial Dimensions |
| Model No. |
Dimensions in millimeters |
| A ±1.0 |
B ±1.0 |
C |
| ST2 |
24.0 |
8.0 |
1.0 |
| ST3.5 |
39.0 |
8.0 |
1.0 |
| ST5 |
52.0 |
8.0 |
1.0 |
|
|
|
| 4 Lead Radial |
| Side View |
End View |
 |
|
|
|
| Radial Specifications |
| Model No. |
Power
@ 60°C |
Max. Working Voltage[kV] |
Max Single Pulse Volt [kV]
|
Joules Max at Single Pulse |
Resistance Ohms |
| Min. |
Max. |
| STR10 |
10 |
8 |
15 |
1500 |
1R5 |
2M |
| STR15 |
15 |
12 |
22 |
2500 |
2R5 |
2M |
|
Single pulse width shall be less than 10µs at 1 R ~20kΩ and less than 10ms at 22kΩ~2MΩ
|
|
|
| Radial Dimensions All Tol. ± 2.0 |
| Model No. |
Dimensions in millimeters |
| L |
D |
S |
| STR10 |
42 |
18 |
31 |
| STR15 |
60 |
18 |
49 |
|
|
| Derating Curve |
 |
|
| ORDERING INFORMATION |
|
|
|
| Example: 5W 1Meg 5% |
|
|
|
|
ST5
|
1M
|
J
|
|
Type
|
Resistance
|
Tolerance
|
|
|
G = 2%
J = 5%
K = 10%
|
|
|
|
|
