product guide
TLV - Vitreous Enamel Power Resistors
12W to 1000W Fixed or Adjustable


SPECIFICATIONS
MATERIAL
Coating: Flameproof vitreous enamel - all welded construction
Core: Steatite ceramic
Derating: Linearly from 100% @ +25°C to 0% at +350°C.
ELECTRICAL
Tolerance: ±5% 1 ohm and over. ±10% under 1 ohm
Power rating: Based on 25°C free air rating
Overload: 10 times rated wattage for 5 seconds
Temperature coefficient: 1 to 20 ohms: ±400 ppm/°C.
Above 20 ohms: ±260 ppm/°C
Dielectric withstanding voltage: 1000 VAC: 12 to 100 watt rating. 3000VAC: 175 to 225 watt (measured from terminal to mounting bracket)
To calculate max. amps: Use formula
Note: For adjustable resistor 100% of the resistance must be in the circuit for 100% of the rated wattage. By setting the adjustment at a lesser resistance the wattage will drop proportionately. Example: a 12 ohm resistor set at 4 ohms would be at 1/3 original wattage.

Type F - Fixed Resistor Type A - Adjustable Resistor

Type Wattage Dimensions (in. / mm) Resistance
Range
L
Length
D
O.D
C
I.D.
Max.
Working
Voltage
Fixed Adjustable
TLV-12 12 1.75 / 44.4 0.313 / 7.94 0.188 / 4.76 565 0.1-51K 1.0-10K
TLV-25 25 2.0 / 50.8 0.562 / 14.3 0.313 / 7.94 625 0.15-100K 1.0-25K
TLV-50 50 4.0 / 101.6 0.562 / 14.3 0.313 / 7.94 1625 0.38-260K 1.0-100K
TLV-100 100 6.5 / 165.1 0.750 / 19.1 0.50 / 12.7 2845 0.23-101K 1.0-100K
TLV-175 175 8.5 / 215.9 1.125 / 28.6 0.75 / 19.1 3595 0.13-101K 1.0-100K
TLV-225 225 10.5 / 226.7 1.125 / 28.6 0.75 / 19.1 4595 0.16-129K 1.0-100K
TLV-500 500 12.0 / 304.8 2.50 / 63.5 1.75 / 44.5 4970 0.38-218K 1.5-15K
TLV-1000 1000 20.0 / 508.0 2.50 / 63.5 1.75 / 44.5 8900 0.69-392K 3.0-27.7K
Other sizes available. Consult factory.
For non-inductive add "N" after wattage.
Terminal Dimensions
Lug
Dimensions
TLV-12 TLV-25, 50 & 100 TLV-175 & 225 TLV-500 & 1000
Inch MM Inch MM Inch MM Inch MM
Width .187 4.7 .250 6.4 .313 8.0 .563 14.3
Height .438 11.1 .563 14.3 .625 15.9 .750 19.1
Hole Dia. .104 2.6 .166 4.2 .196 5.0 .206 5.2
"Z" type mounting brackets standard. Other types available on request

Derating Curve
ORDERING INFORMATION
Example: 100W Fixed 10 ohm 5%
TLV100
F
10R0
J
Type
 
Resistance
Tolerance
F=Fixed
A=Adjustable
4 digit. <100 use R for decimal. >100 4th digit is multiplier
J = 5%
K = 10%

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