|
|
 |
EF Series, High Frequency Power Resistors
Thick Film, Non-Inductive, Economic Price |
|
|
|
|
|
|
EF and High-End Power Circuitries at very Economical Prices
|
|
|
| Micro-Ohm offers the EF series to meet the general requirements of NON-INDUCTIVE high frequency power resistors. EF series is able to supply you with a high power and Non-Inductive resistor. |
|
| *Resistance tolerances offered from 1.0% to 10% |
*Load Life stability of 0.5% per 1000 hrs. |
| *Various models of resistance values up to Megohms available. |
*Build up High Power RF Termination System: 10kw, 50kw, 300kw in oil or water tank & chiller system. |
| *Melf type available in EF2, EF3 & EF5 |
|
| Application Guide |
| RF Termination |
RF Dummy Load |
Wave Form Load |
| High Frequency |
Charging/Discharging |
AVR, UPS |
| Current Dividing |
Elevator controls |
Electrical Trains |
| Experiments |
High Frequency Circuits |
Inverters |
| Power Braking |
Military |
Hoist Cranes |
| Motor Dynamic Braking |
Industrial Vehicles |
Power Supply |
| Medical Equipment |
Server Drivers |
Power Loaders |
| Snubbers |
Telecom Equipment |
Shunt |
| Testing Equipment |
Inrrush Current Limiters |
Preloads |
| Dummy Loads |
Rectifier |
Soft Start |
| EMI Suppressions |
|
|
|
|
Series EF Precision
Power Resistor,
Non-Inductive
High Frequency
Non-Inductive Performance
Full power and Voltage ratings
  |
Specifications |
|
Resistance Tolerance: 1%, 2%, 5%, & 10% |
|
Temperature Coefficient: Std. 100ppm/°C, referenced to 25°C, from -15°C to +105°C, other TCR available upon request. |
|
Overload: 5 times rated power with applied voltage not to exceed 1.5 times Max. continuous operating voltage for 5 seconds, overload/overvoltage  R 0.50% max. |
|
Thermal Shock: Mil-Std-202, Method-107 Cond. C. R 0.50% max. |
|
Load Life: 1,000 hours at rated power R 0.5% at DC AC. R 3.0% at repetive-pulse energy. |
|
Moisture Resistance: Mil-Std-202, Method-106, R 0.50% max. |
|
Lead Material: Tinned plated copper solderable wire |
|
Insulation Resistance: 10,000Megohms Min. |
|
Terminations:
EF07 - EF5: Tinned Cap & Wire Lead
EF50 - EF200: AL Alloy Cap, Silver Metalized Terminals or Tinned Plated Steel Lugs |
|
Encapsulation: High temperature silicone conformal, glass, Epoxy Conformal Coat |
|
The described specifications & dimensions subject to change without notice. |
|
|
|
|
|
|
|
|
|
|
| Axial Dimensions |
 |
| Axial Specifications |
Model
No. |
Wattage
@ 125°C |
Max. Continuous
Opereration
Volt [kV] |
Resistance
( )
Min. Max. |
Dimensions in
milimeters (inches) |
| A |
B |
C |
| EF07 |
0.7 |
1.0* |
20R 2M |
15
(.59) |
5.0±1.0
(.196) |
1.0 |
| EF2 |
2.0 |
4.0* |
20R 2M |
24.0±1.5
(.944) |
8.00±1.0
(.314) |
1.0 |
| EF3 |
3.0 |
6.0* |
20R 2M |
39.0±1.5
(1.535) |
8.00±1.0
(.314) |
1.0 |
| EF5 |
5.0 |
6.0* |
20R 2M |
52.0±1.5
(2.047) |
8.00±1.0
(.314) |
1.0 |
|
| *Voltage limited by power rating |
|
| Tubular Dimensions |
 |
|
|
