Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
Phone: (951) 788-1700
Fax: (951) 369-1151
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
© 2004 Caddock Electronics, Inc.
CAD
K
DOC
Dimensions
Encap-
sulation
Leadwire
Max.
Working
Voltage
Model
No.
Wattage
@
+125°C
Temperature
Coefficient
ppm/°C
Dielect.
Strength
Limited
by
Maximum
Working
Voltage
Resistance
Min.
Max.
Comments
Ref. Case "D" Dwg.
Transfer
Molded
Tinned
Copper
TK
633V
300
5, 10 or 20
400
1.51 Meg
10 Meg
With Standoff
Ref. Case "A" Dwg.
Transfer
Molded
Tinned
Copper
TK
621
200
5, 10 or 20
300
501 K
2 Meg
Ref. Case "B" Dwg.
Transfer
Molded
Tinned
Copper
TK
633
300
5, 10 or 20
400
1.51 Meg
10 Meg
Ref. Case "C" Dwg.
Transfer
Molded
Tinned
Copper
TK
639
300
5, 10 or 20
400
1.51 Meg
10 Meg
Ref. Case "E" Dwg.
Transfer
Molded
Gold
Plated
TK
634
300
5, 10 or 20
400
1.51 Meg
10 Meg
Resistance Tolerance: ±0.1% (tolerances
of ±1% and ±0.05% on special order).
Operating Temperature: -55°C to +175°C.
TC Temperature Range: -55°C to +125°C.
Overload*: 6.25 times rated power for 5
seconds at voltage not to exceed 1.5 times
maximum rated working voltage, ΔR less
than 0.05%.
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
Type TK Low TC Precision Radial-Lead Film Resistors - Standard Resistance Range
Resistance Tolerance: ±0.1% (tolerances
of ±1% and ±0.05% on special order).
Operating Temperature: -55°C to +175°C.
TC Temperature Range: -55°C to +125°C.
Overload*: 1.5 times rated working voltage
for 5 seconds, ΔR less than 0.2%.
Thermal Shock: Mil-Std-202, Method 107,
Cond. B, ΔR less than 0.1%.
Low Temperature Operation*: ΔR less
than 0.05%.
Dielectric Withstanding Voltage*: ΔR less
than 0.05%.
Moisture Resistance*: Mil-Std-202,
Method 106, ΔR less than 0.10%.
Type TK Low TC Precision Radial-Lead Film Resistors - Extended Resistance Range
DIMENSIONS IN INCHES AND (MILLIMETERS)
Case "B"
Load Life*: 2,000 hours at +125°C,
Δ
R less than 0.2%.
Shelf Life (Typical): 50 ppm/year.
Insulation Resistance: 10,000 Megohms.
Vibration*: ΔR less than 0.05%.
Shock*: ΔR less than 0.05%.
*Test methods per procedures of
Mil-PRF-55182/9.
Thermal Shock: Mil-Std-202, Method 107,
Cond. B, ΔR less than 0.05%.
Low Temperature Operation*: ΔR less
than 0.02%.
Dielectric Withstanding Voltage*: ΔR less
than 0.02%.
Moisture Resistance*: Mil-Std-202,
Method 106, 1K to 500K ΔR less than 0.05%,
500.1K to 1.5 Meg ΔR less than 0.10%.
Resistance
Min.
Max.
Dimensions
Encap-
sulation
Leadwire
Max.
Working
Voltage
Model
No.
Wattage
@
+125°C
Temperature
Coefficient
ppm/°C
Dielect.
Strength
Comments
Ref. Case "D" Dwg.
Transfer
Molded
Tinned
Copper
TK
133V
0.3
300
5, 10, or 20
400
1 K
1.5 Meg
With Standoff
Ref. Case "B" Dwg.
Transfer
Molded
Tinned
Copper
TK
133
0.3
300
5, 10, or 20
400
1 K
1.5 Meg
Ref. Case "A" Dwg.
Transfer
Molded
Tinned
Copper
TK
121
0.2
200
5, 10, or 20
300
1 K
500 K
Ref. Case "E" Dwg.
Transfer
Molded
Gold
Plated
TK
134
0.3
300
5, 10, or 20
400
1 K
1.5 Meg
Ref. Case "C" Dwg.
Transfer
Molded
Tinned
Copper
TK
139
0.3
300
5, 10, or 20
400
1 K
1.5 Meg
Case "A"
Model TK133V and TK633V
.025 ±.002
(.64 ±.05) DIA.,
LEADWIRE OFFSET
.012 (.31) FROM
CENTERLINE
.250
±
1.27)
±
.050
(6.35
.290
±
.010
(7.37
±
.26)
.200 ±.015
(5.08 ±.38)
(CENTERED)
10.0 MEG
TK633V
0.1%
.090
(2.29)
.030 ±.004
(.76 ± .10)
.095 ±.005
(2.41 ±.13)
.290 ±.010
(7.37 ±.26)
Model TK121 and TK621
2.00 MEG
TK621
0.1%
1.50
+3.18)
-0.00)
+.125
-.000
.150 ±.015
(3.81 ±.38)
(CENTERED)
.245
±
.010
(6.22
±
.26)
(38.10
.095 ±.005
(2.41 ±.13)
.245 ±.010
(6.22 ±.26)
.025 ±.002
(.64 ±.05) DIA.,
LEADWIRE
OFFSET
.012 (.31)
FROM
CENTERLINE
Model TK139 and TK639
.305
±
.010
(7.75
±
.26)
.105 ±.005
(2.67 ±.13)
.305 ±.010
(7.75 ±.26)
.025 ±.002
(.64 ±.05) DIA.,
LEADWIRE
OFFSET
.012 (.31)
FROM
CENTERLINE
10.0 MEG
TK639
0.1%
1.50
+3.18)
-0.00)
+.125
-.000
.150 ±.015
(3.81 ±.38)
(CENTERED)
(38.10
Case "C"
Case "D"
Derating Curve:
AMBIENT TEMPERATURE, °C
100
80
60
40
20
0
25
75
125
175
225
Model TK133 and TK633
.290
±
.010
(7.37
±
.26)
1.50
+3.18)
-0.00)
+.125
-.000
(38.10
.095 ±.005
(2.41 ±.13)
.025 ±.002
(.64 ±.05) DIA.,
LEADWIRE
OFFSET
.012 (.31)
FROM
CENTERLINE
.290 ±.010
(7.37 ±.26)
.200 ±.015
(5.08 ±.38)
(CENTERED)
10.0 MEG
TK633
0.1%
Load Life*: 2,000 hours at +125°C,
1K to 500K ΔR less than 0.07%,
500.1K to 1.5 Meg. ΔR less than 0.10%.
Shelf Life (Typical): 25 ppm/year.
Insulation Resistance: 10,000 Megohms.
Vibration*: ΔR less than 0.03%.
Shock*: ΔR less than 0.05%.
*Test methods per procedures of
Mil-PRF-55182/9.
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
Model TK134 and TK634
.025 ±.002
(.64 ±.05) DIA.,
LEADWIRE OFFSET
.012 (.31) FROM
CENTERLINE
.250
±
1.27)
±
.050
(6.35
.290 ±.010
(7.37 ±.26)
.200 ±.015
(5.08 ±.38)
(CENTERED)
10.0 MEG
TK634
0.1%
.095 ±.005
(2.41 ±.13)
.290 ±.010
(7.37 ±.26)
Case "E"
Type TK Low TC Precision Radial-Lead Film Resistors
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