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Type TK Low TC Precision Radial-Lead Film Resistors
Page 1 of 2
Low TC of 5 ppm/C, 10 ppm/C, or 20 ppm/C and Resistance Range from 1 Kohm to 10 Megs
Type TK Low TC Precision Radial-Lead Resistors with the Tetrinox(R) resistance system solve the reliability problems related to other low TC precision resistor technologies. The robust construction of Caddock's Type TK Resistors provides reliable operation even in harsh temperature cycling and/or power cycling environments. Type TK Low TC Precision Radial-Lead Film Resistors provide a combination of performance advantages never before available in a resistive component:
* Low Temperature Coefficient - better than 5 ppm/C, * Long-Term Absolute Stability - typically better than * Extended Resistance Range from 1 K ohm to 10 Megohm. 0.05% per 2,000 hours of operation.
10 ppm/C, or 20 ppm/C over the entire temperature range from -55C to +125C!
* Precision Tolerances - 0.1% is * Wide Operating Temperature
standard, and tolerances of 1% and 0.05% are available. Range - from -55C to +175C. Building on over 30 years of experience with our unique complex oxide technology, Caddock has perfected the Tetrinox(R) resistance system - the first high resistance system to provide a TC that is well within 10 ppm/C and that is also essentially linear over the entire temperature range from -55C to +125C. (Photos show resistors full size) The exceptional performance of Type TK resistors can achieve improvements in many circuit applications: Low TC "Matched-Pair" Voltage Dividers can be Assembled Without Pre-Selection of Resistors. An important application for Type TK resistors is in "matched-pair" voltage dividers where the low 5 ppm/C temperature coefficient provides ratio tracking of less than 10 ppm/C without resistor pre-selection or special testing. With factory selection, Type TK resistor pairs can be matched to within 1 ppm/C. Extended Resistance Range Reduces Power Requirements Because the Type TK resistors provide resistance values as high as 10 Megohms - values that are up to 100 times higher than other types of ultra-low TC resistors - engineers can now design precision circuits with lower current drain and lower power requirements.
Ordering Information:
TK633 - 10.0 Meg - 0.1% - 10 ppm/C Model Number Tolerance Temperature Coefficient Resistor Value
* Small Size - with four miniature
* High Power Density - with power
rectangular cases for maximum packaging density and minimum mounting area.
* Caddock's Non-Inductive Performance - provides faster * High Density Packaging - the radial-lead mounting and
settling times and minimum distortion in all types of high frequency circuits.
ratings of 0.2 Watt and 0.3 Watt in molded cases, the largest of which is a standard CK06 package.
small rectangular case of the Type TK resistors permit high packaging densities in low profile circuitry. Because the four models of the Type TK resistors are available in an exceptionally wide range of resistance values, lead spacing and mounting space can be standardized in a larger number of designs.
Applications Engineering 17271 North Umpqua Hwy. Roseburg, Oregon 97470-9422 Phone: (541) 496-0700 Fax: (541) 496-0408
(c) 2004 Caddock Electronics, Inc.
CADDOCK
e-mail: caddock@caddock.com * web: www.caddock.com For Caddock Distributors listed by country see caddock.com/contact/dist.html
Sales and Corporate Office 1717 Chicago Avenue Riverside, California 92507-2364 Phone: (951) 788-1700 Fax: (951) 369-1151
28_IL115.1004
Type TK Low TC Precision Radial-Lead Film Resistors
Page 2 of 2
Type TK Low TC Precision Radial-Lead Film Resistors - Standard Resistance Range
Model No.
TK 121
Temperature Max. Wattage Working Dielect. Coefficient @ +125C Voltage Strength ppm/C
5, 10, or 20 0.2 200 300
Resistance Min.
1K
Max.
500 K
Dimensions
Ref. Case "A" Dwg.
Encapsulation
Transfer Molded Transfer Molded Transfer Molded Transfer Molded Transfer Molded
Leadwire
Tinned Copper Tinned Copper Tinned Copper Gold Plated Tinned Copper
Comments
TK 133 TK 133V
5, 10, or 20 5, 10, or 20
5, 10, or 20
5, 10, or 20
0.3 0.3
0.3
0.3
300 300
300
300
400 400
400
400
1K 1K
1K
1K
1.5 Meg 1.5 Meg
1.5 Meg
1.5 Meg
Ref. Case "B" Dwg. Ref. Case "D" Dwg.
Ref. Case "E" Dwg.
Ref. Case "C" Dwg.
Temperature Coefficient identified with color stripe on the top edge of the part: 5 ppm/C White Stripe 10 ppm/C No Stripe 20 ppm/C Green Stripe
With Standoff
TK 134
TK 139
Resistance Tolerance: 0.1% (tolerances of 1% and 0.05% on special order). Operating Temperature: -55C to +175C. TC Temperature Range: -55C to +125C. Overload*: 6.25 times rated power for 5 seconds at voltage not to exceed 1.5 times maximum rated working voltage, R less than 0.05%.
Thermal Shock: Mil-Std-202, Method 107, Cond. B, R less than 0.05%. Low Temperature Operation*: R less than 0.02%. Dielectric Withstanding Voltage*: R less than 0.02%. Moisture Resistance*: Mil-Std-202, Method 106, 1K to 500K R less than 0.05%, 500.1K to 1.5 Meg R less than 0.10%.
Load Life*: 2,000 hours at +125C, 1K to 500K R less than 0.07%, 500.1K to 1.5 Meg. R less than 0.10%. Shelf Life (Typical): 25 ppm/year. Insulation Resistance: 10,000 Megohms. Vibration*: R less than 0.03%. Shock*: R less than 0.05%. *Test methods per procedures of Mil-PRF-55182/9.
Type TK Low TC Precision Radial-Lead Film Resistors - Extended Resistance Range
Model No.
TK 621
TK 633
Max. Temperature Wattage Dielect. Coefficient @ +125C Working Strength Voltage ppm/C
5, 10 or 20
5, 10 or 20
Limited by Maximum Working Voltage
Resistance Min.
501 K
1.51 Meg
Max.
2 Meg
10 Meg
Dimensions
Ref. Case "A" Dwg.
Ref. Case "B" Dwg.
Encapsulation
Transfer Molded Transfer Molded Transfer Molded Transfer Molded Transfer Molded
Leadwire
Tinned Copper Tinned Copper Tinned Copper Gold Plated Tinned Copper
Comments
200
300
300
400
Temperature Coefficient identified with color stripe on the top edge of the part: 5 ppm/C White Stripe 10 ppm/ C No Stripe 20 ppm/ C Green Stripe
TK 633V
TK 634
5, 10 or 20
5, 10 or 20
300
300
400
400
1.51 Meg
1.51 Meg
10 Meg
10 Meg
Ref. Case "D" Dwg.
Ref. Case "E" Dwg.
With Standoff
TK 639
5, 10 or 20
300
400
1.51 Meg
10 Meg
Ref. Case "C" Dwg.
Resistance Tolerance: 0.1% (tolerances of 1% and 0.05% on special order). Operating Temperature: -55C to +175C. TC Temperature Range: -55C to +125C. Overload*: 1.5 times rated working voltage for 5 seconds, R less than 0.2%.
Thermal Shock: Mil-Std-202, Method 107, Cond. B, R less than 0.1%. Low Temperature Operation*: R less than 0.05%. Dielectric Withstanding Voltage*: R less than 0.05%. Moisture Resistance*: Mil-Std-202, Method 106, R less than 0.10%.
Load Life*: 2,000 hours at +125C, R less than 0.2%. Shelf Life (Typical): 50 ppm/year. Insulation Resistance: 10,000 Megohms. Vibration*: R less than 0.05%. Shock*: R less than 0.05%. *Test methods per procedures of Mil-PRF-55182/9.
Model TK121 and TK621
.245 .010 (6.22 .26)
Case "A"
.095 .005 (2.41 .13)
Model TK133 and TK633
.290 .010 (7.37 .26)
TK633 10.0 MEG 0.1%
Case "B"
.095 .005 (2.41 .13)
Model TK139 and TK639
.305 .010 (7.75 .26)
TK639 10.0 MEG 0.1%
Case "C"
.105 .005 (2.67 .13)
TK621 2.00 MEG 0.1%
+.125 1.50 -.000 +3.18) (38.10 -0.00) .150 .015 (3.81 .38) (CENTERED)
.245 .010 (6.22 .26) .025 .002 (.64 .05) DIA., LEADWIRE OFFSET .012 (.31) FROM CENTERLINE
+.125 1.50 -.000 +3.18) (38.10 -0.00)
.200 .015 (5.08 .38) (CENTERED)
.290 .010 (7.37 .26)
.025 .002 (.64 .05) DIA., LEADWIRE OFFSET .012 (.31) FROM CENTERLINE
+.125 1.50 -.000 +3.18) (38.10 -0.00)
.305 .010 (7.75 .26)
.025 .002 (.64 .05) DIA., LEADWIRE OFFSET .150 .015 .012 (.31) (3.81 .38) FROM (CENTERED) CENTERLINE
Model TK133V and TK633V
.290 .010 (7.37 .26)
.090 (2.29)
.095 .005 (2.41 .13)
TK633V 10.0 MEG 0.1%
Case "D"
Model TK134 and TK634
.290 .010 (7.37 .26)
TK634 10.0 MEG 0.1%
Case "E"
RATED LOAD, %
.095 .005 (2.41 .13) .290 .010 (7.37 .26)
Derating Curve:
100 80 60 40 20 0 25 75 125 175 225
.030 .004 (.76 .10)
.290 .010 (7.37 .26)
.250 .050 (6.35 1.27)
.200 .015 (5.08 .38) (CENTERED)
.025 .002 (.64 .05) DIA., LEADWIRE OFFSET .012 (.31) FROM CENTERLINE
.250 .050 (6.35 1.27)
.200 .015 (5.08 .38) (CENTERED)
.025 .002 (.64 .05) DIA., LEADWIRE OFFSET .012 (.31) FROM CENTERLINE
AMBIENT TEMPERATURE, C
DIMENSIONS IN INCHES AND (MILLIMETERS)
Applications Engineering 17271 North Umpqua Hwy. Roseburg, Oregon 97470-9422 Phone: (541) 496-0700 Fax: (541) 496-0408
(c) 2004 Caddock Electronics, Inc.
CADDOCK
e-mail: caddock@caddock.com * web: www.caddock.com For Caddock Distributors listed by country see caddock.com/contact/dist.html
Sales and Corporate Office 1717 Chicago Avenue Riverside, California 92507-2364 Phone: (951) 788-1700 Fax: (951) 369-1151
28_IL115.1004

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