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 1,000 ohms and 1 Megohm. Caddock's high thru-put manufacturing
capability 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.
Absolute Temperature Coefficient: ±25 ppm/°C
referenced to +25°C, ∆R taken at 0°C and +70°C.
• 10:1 Resistance Ratio - for use in amplifier gain-setting.
• 9:1 Resistance Ratio - for use in voltage reference dividers.
Voltage Rating: 30 volts DC or RMS AC
applied to R1, R2, R3 and R4.
T912 - A 10K - 010 - 02
Ordering Information:
Ratio Temperature Track (0°C to +70°C):
*
= 5 ppm/°C
Model Number
-10
=
10 ppm/°C
-05
= 2 ppm/°C
Power Rating: 0.10 watt applied to R1, R2, R3
and R4 (not to exceed rated voltage).
Ratio Code Letter:
-02
*
A - T912 with R
1
: R
2
where R
2
= 10R
40K:400K
50K:500K
1
Ratio Tolerance: -100
=
=
0.1%
0.05%
-020
-010
=
=
0.02%
0.01%
*
1K:10K
2K:20K
5K:50K
10K:100K
20K:200K
25K:250K
-050
Package Power Rating: Type T912, 0.20 watt.
Type T914, 0.40 watt.
100K:1 Meg
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
40K:360K
50K:450K
1
1K:9K
2K:18K
5K:45K
10K:90K
20K:180K
25K:225K
Storage Temperature: -55°C to +105°C.
Special or mixed resistance values are available as custom networks.
See the custom section at the bottom of this page.
100K:900K
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.
No Letter - T912 with R
No Letter - T914 with R
1
1
= R
= R
2
2
= 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.
Dielectric Strength Between Isolated Pins:
50 volts RMS AC.
.095 (2.41)
MAX.
.095 (2.41)
.900 ±.020
.500 ±.020
MAX.
(22.86 ±.51)
(12.70 ±.51)
Ratio Stability Under Load: Ratio change
between any two resistors in the network under
full load for 2,000 hours at +70°C, 0.01%
maximum.
CADDOCK
T914
0129
CADDOCK
T912
0102
.500 ±.020
.500 ±.020
(12.70 ±.51)
(12.70 ±.51)
.020
(.51)
PIN 1
.020
(.51)
PIN 1
.100
(2.54)
.010
(.26)
Shelf Stability of Ratio: Six months at shelf
conditions, 50 ppm maximum.
.010
(.26)
.100
(2.54)
.150 ±.040
(3.81 ±1.02)
.150 ±.040
(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
Call or write our Applications
Engineering for performance,
price and availability of these
custom 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: 1.0 Megohm and 4 K)
• 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
Hurst Green • Surrey • RH8 9AX • UK
Email • sales@rhopointcomponents.com
Web • www.rhopointcomponents.com
UK & Ireland
Distributors
Tel: +44 (0) 870 608 1188
© 2004 Caddock Electronics, Inc.
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