Type T912 and T914 Precision Resistor Networks
Resistor Pairs and Quads with Ratio Characteristics for Precision Analog Circuits
Type T912 and T914 Precision Resistor Networks are constructed with
Caddock Tetrinox® resistance films to achieve the precise ratio performance
and stability required by highly accurate amplifier circuits, voltage reference
circuits, and precision bridge circuits.
• Ratio Tolerance - from 0.1% to 0.01%.
• Ratio Temperature Coefficient - 10 ppm/°C, 5 ppm/°C or 2 ppm/°C.
• Absolute Temperature Coefficient - 25 ppm/°C.
• Ratio Stability of Resistance at Full Load for 2,000 hours - within 0.01%.
• Shelf Life Stability of Ratio for 6 Months - within 0.005%.
Both the T912 and the T914 are available in 14 standard resistance values
between 1K and 1 Megohm. Caddock's high thru-put manufacturing capabil-
ity assures that prototype and large-volume production quantities are available
either from stock or within 6 weeks after receipt of order.
Standard Type T912 and Type T914 Precision Resistor Networks
Specifications:
In addition to the 14 standard equal value models of the Type T912 and T914,
the Type T912 can also be ordered with:
Absolute Tolerance: ±0.1% for all resistors.
• 10:1 Resistance Ratio - for use in amplifier gain-setting.
• 9:1 Resistance Ratio - for use in voltage reference dividers.
referenced to +25°C, ΔR taken at 0°C and +70°C.
Absolute Temperature Coefficient: 25 ppm/°C
Ordering Information:
T912 - A 10K - 010 - 02
Ratio Tolerance: Options for ratio tolerance are
provided as shown in the Ordering Information
panel.
Ratio Temperature Track (0°C to +70°C):
*
Model Number
-10 = 10 ppm/°C
-05 = 5 ppm/°C
Ratio Code Letter:
-02 = 2 ppm/°C
*
A - T912 with R
1
: R
2
where R
2
= 10R
1
Ratio Tolerance: -100 = 0.10%
-020 = 0.02%
-010 = 0.01%
Ratio Temperature Coefficient: Options for
ratio temperature coefficient are provided as
shown in the Ordering Information panel.
*
1K:10K
2K:20K
5K:50K
10K:100K
20K:200K
25K:250K
40K:400K
50K:500K
100K:1 Meg
-050 = 0.05%
Standard Resistance Values: (R1)
*
1K
2K
5K
10K
20K
25K
40K
50K
100K
200K
250K
400K
500K
1 Meg
B - T912 with R1: R2
where R
2
= 9R
1
1K:9K
2K:18K
5K:45K
10K:90K
20K:180K
25K:225K
40K:360K
50K:450K
100K:900K
Voltage Rating: 30 volts DC or RMS AC
applied to R1, R2, R3 and R4.
Special or mixed resistance values are available as custom networks.
See the custom section at the bottom of this page.
No Letter - T912 with R
No Letter - T914 with R
1
1
= R
= R
2
2
Power Rating: 0.10 watt applied to R1, R2, R3
and R4 (not to exceed rated voltage).
= R3 = R4
(This information appears on the back side of the network)
*
Type T912
Ratios Available: 1:1, 9:1, 10:1, and Custom.
Type T914
Ratios Available: 1:1 and Custom.
Package Power Rating: Type T912, 0.20 watt.
Type T914, 0.40 watt.
.095 (2.41)
MAX.
.095 (2.41)
.900 ±.020
.500 ±.020
MAX.
(22.86 ±.51)
(12.70 ±.51)
Storage Temperature: -55°C to +105°C.
Insulation Resistance Between Isolated Pins:
Pin 2 to Pin 3, Pin 4 to Pin 5, or Pin 6 to Pin 7,
1,000 Megohms, minimum.
CADDOCK
T912
0402
CADDOCK
T914
0429
.500 ±.020
.500 ±.020
(12.70 ±.51)
(12.70 ±.51)
.020
(.51)
.020
(.51)
PIN 1
PIN 1
Dielectric Strength Between Isolated Pins:
50 volts RMS AC.
.010
(.26)
.100
(2.54)
.100
(2.54)
.010
(.26)
.150 ±.040
.150 ±.040
(3.81 ±1.02)
(3.81 ±1.02)
4 PINS ON .100 (2.54) CENTERS
8 PINS ON .100 (2.54) CENTERS
R1
R2
R3
R4
R1
R2
DIMENSIONS IN INCHES
AND (MILLIMETERS)
1
2
3
4
5
6
7
8
1
2
3
4
R1 = R2 = R3 = R4
Custom Model T912 and T914 Precision Resistor Networks
For applications requiring non-standard
resistance values, the T912 and T914 custom
configurations can include these special features:
• Mixed resistance values with a maximum ratio
of 250-to-1. (Example: 1 Megohm and 4 K)
Contact our Applications
Engineering for performance,
price, and availability of these
custom resistor networks.
• Absolute TC as low as 15 ppm/°C.
• Ratio TC as low as 2 ppm/°C.
• Custom voltage ratings.
• Matched resistors of any special value
between 1 K and 2 Megohms.
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: (541) 496-0700
Fax: (541) 496-0408
Sales and Corporate Office
1717 Chicago Avenue
Riverside, California 92507-2364
e-mail: caddock@caddock.com • web: www.caddock.com
For Caddock Distributors listed by country see caddock.com/contact/dist.html
Phone: (951) 788-1700
Fax: (951) 369-1151
© 2004 Caddock Electronics, Inc.
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