Type TF Low TC Ultra-Precision Film Resistors
Absolute TC to 5 ppm/°C, Values from 1 Kohm to 125 Megohms, Absolute Tolerance to ±0.01%
Type TF precision resistors employ the Caddock Tetrinox ® resistance
films - the resistance system that sets a new standard for high value,
ultra-stable precision resistors that provide an exceptional combination of
performance characteristics:
•
Ultra-Precision
- Five standard resistance tolerances from ±1%
to ±0.01%.
This approach to quantity production of ultra-precision discrete resistors is
the result of combining our unique complex oxide resistance film technology
with an advanced high thru-put laser manufacturing capability.
•
A Wide Range of Resistance Values
- from 1 Kohm to 125 Megohms.
•
Low Temperature Coefficient
- 5 ppm/°C, 10 ppm/°C, or 15 ppm/°C.
•
Long-Term Stability
- to 0.01% per 1,000 hours.
Type TF - Standard Resistance Range - 1 Kohm to 10 Megohms
Axial Leads Radial Leads
TF
020
N
TF
050
N
TF
020
R
TF
050
R
Specifications:
B
Model Number
@
+70°C
Wattage
0.33
0.75
Maximum
Continuous
Oper. Voltage
300
1,400
Min.
1K
10 K
Resistance
Max.
Dimensions inches (mm)
A
.750
±.020
(19.05
±.51)
.375
±.020
(9.53
±.51)
Apply to all Type TF resistor models.
Absolute Temperature Coefficient:
5 ppm/°C,
10 ppm/°C, or 15 ppm/°C referenced to +25°C,
∆R
taken at -15°C and +105°C.
Resistance Tolerance:
±0.01%, ±0.025%,
±0.05%, ±0.10%, or ±1.0%.
Load Life:
For ±0.10% or tigher tolerance,
1,000 hours at +70°C. Load stability versus
applied power is shown in the load stability curve
on this page.
Storage Temperature:
-55°C to +105°C.
Leadwire:
Tinned Copper.
Derating Curve:
100
RATED LOAD, %
2 Meg
10 Meg
RATED LOAD, %
1.500
±.020
.500
±.020
(38.10
±.51)
(12.70
±.51)
100
80
40
60
20
Shelf Life:
Typically 0.0025% per year
Load Stability:
0
0.01%
0.02%
0.03%
MAXIMUM %ΔR per 1,000 HOURS
Type TF - Extended Resistance Range - 2 Megohms to 125 Megohms
Axial Leads Radial Leads
TF
626
N
TF
656
N
TF
626
R
TF
656
R
Model Number
Wattage
@
+70°C
0.33
0.75
Maximum
Continuous
Oper. Voltage
300
1,400
Min.
Resistance
Max.
Dimensions inches (mm)
A
B
.750
±.020
(19.05
±.51)
.375
±.020
(9.53
±.51)
80
40
0
60
20
2.01 Meg
10.01 Meg
35 Meg
125 Meg
1.500
±.020
(38.10
±.51)
.500
±.020
(12.70
±.51)
Shelf Life:
Typically 0.005% per year
Load Stability:
1,000 hours at rated
voltage at +70°C, maximum
∆R
0.03%
.075
±.020
(1.91
±.51)
.032
(.81)
A
CADDOCK
TF020R
0618
0
35
70
105
AMBIENT TEMPERATURE,
°C
.075
±.020
(1.91
±.51)
B
.50
±.125
(12.70
±3.18)
Radial Lead Spacing:
Ordering Information:
TF050R - 10.0 Meg - 0.01% - 10 ppm/°C
Model Number
Tolerance
Temperature
Coefficient
Resistor Value
1.500
±.125
(38.10
±3.18)
A
CADDOCK
TF020N
0628
B
.032 (.81)
DIMENSIONS IN INCHES AND (MILLIMETERS)
.600 ±.020 (15.24 ±.51) for Models TF020R and TF626R
1.350 ±.020 (34.29 ±.51) for Models TF050R and TF656R
Custom Type TF Resistors
Additional cost savings can be realized
when your high volume ultra-precision Type TF
resistor is optimized for:
•
Lightning transient capability
•
Voltage rating
•
Power rating
•
Mechanical configuration
•
Ratio matched sets
And for special requirements, custom Type
TF resistors are available with:
•
TC of 5 ppm/°C, 10 ppm/°C, 15 ppm/°C,
20 ppm/°C, or 25 ppm/°C.
•
Shelf stability of 0.0025% per year.
Type TF resistors can also be produced with
custom-spaced radial leads that will
plug directly into your existing circuit layout.
Sales and Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
28_IL116.01717
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
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