1 of 5 July 2008
CTS Electronic Components Leaded Surface Mount Series 768 www.ctscorp.com
Resistance Tolerance: Resistance Range:
Standard: ±2% or 0.5Ω (whichever is greater) Standard: 10Ω to 1 MegΩ
Special: ±0.25% or 0.3Ω (whichever is greater)
Operating Temperature Range: Dielectric Strength:
-55°C to +125°C 100 VAC
Temperature Coefficient: Maximum Operating Voltage:
Standard: 100Ω to 1 MegΩ 50V not to exceed rated power
100PPM/°C typical
10Ω to 99Ω
±200PPM/°C typical
Power Rating (Total Network Power):
14 Pin 16 Pin 20 Pin
@25°C 2.0w 2.3w 3.0w
@70°C 1.3w 1.5w 2.0w
Maximum Resistor Power:
(Not to Exceed Total Network Power)
Schematic 1 3 5 7
@25°C 0.15w 0.30w 0.15w 0.15w
@70°C 0.10w 0.20w 0.10w 0.10w
Features
• Medium Body Design
• Low Profile---Board to Network Clearance of
0.0075”±0.0025”
• Solid Ceramic Construction
• No Internal Dendrite Growth
• Conforms to EIA PDP-100 SOGN-0002
• Packaged in Tape & Reel or Slide Packs
• Application Specific Circuits Are Available
• Compatible With Reflow Solder Process
• RoHS Compliant
Leaded Surface Mount Series 768
Technical
Data
Page 2 of 5 July 2008
CTS Electronic Components Leaded Surface Mount Series 768 www.ctscorp.com
Types of Circuits
Bussed (Schematic 1) Isolated (Schematic 3) Dual Terminator (Schematic 5) R/2R Ladder (Schematic 7)
Land Patterns
"A" Dimension
No. of Pins mm in.
14 9.91 ±0.25 0.390 ±0.010
16 11.18 ±0.25 0.440 ±0.010
20 13.70 ±0.25 0.540 ±0.010
Notes
mm 0.10 MAX
1. Lead COPLANARITY in. 0.004
mm ±0.25
General Tolerances in. ±0.010
mm & in. DIMENSIONS ARE NOT EQUIVALENT
LEAD COUNT A B C D
mm 5.34 7.37 9.40 7.60
14P in. 0.21 0.29 0.37 0.30
mm 5.34 7.37 9.40 8.90
16P in. 0.21 0.29 0.37 0.35
mm 5.34 7.37 9.40 11.40
20P in. 0.21 0.29 0.37 0.45
C
A
B
D
2.03
.080
1.27
.050
0.63
.025 TYP.
TYP.
TYP.
PART NO.
DATE CODE
MODULES WILL BE
MARKED WITH A SQUARE
AT PIN #1 (TOP MARKING)
1.270
.050
.430±.050
.017±.002
.200
0°- 8°
+.050
-.030
.008 +.002
-.001
NOTE #1
TYP.
INSULATION COATING
APPLIED ON TWO SURFACES
A DIM.
5.590
.220
+.130
-.250
+.005
-.010
7.620
.300
MAX. TYP.
1.350
.053
.810
.032
+.330
-.300
+.013
-.012
1.600±.200
.063±.008
.190±.060
.0075±.005
BELOW
SEATING
PLANE
Page 3 of 5 July 2008
CTS Electronic Components Leaded Surface Mount Series 768 www.ctscorp.com
Standard Resistor Values & EIA Code
Dual Terminator Resistor Values
The Series 768 part number includes the EIA Code value of the Thevenin equivalent resistances of R1 and R2.
The Thevenin equivalent resistance is calculated in the following way: The suffix letter relates only to the
sequence of variations that equal the same equivalent resistance. Reference Thevenin Equivalent Resistance
Chart.
.Req=R1R2/(R1 + R2)
Example:
768205131C R1=180 Ohms R2=470 Ohms Req=130 Ohms
Pin N/2 is common to R2 and Pin N is common to R1 on CTS Series 768.
Thevenin Equivalent Resistance Chart
(Cont.)
Ohms Code Ohms Code Ohms Code Ohms Code Ohms Code Ohms Code
0 000X 68 680 470 471 3.3K 332 27K 273 220K 224
10 100 75 750 510 511 3.9K 392 33K 333 270K 274
12 120 82 820 560 561 4.7K 472 39K 393 330K 334
15 150 100 101 680 681 5.1K 512 47K 473 390K 394
18 180 110 111 820 821 5.6K 562 51K 513 470K 474
22 220 120 121 1K 102 6.8K 682 56K 563 510K 514
27 270 150 151 1.2K 122 8.2K 822 68K 683 560K 564
33 330 180 181 1.5K 152 10K 103 82K 823 680K 684
39 390 220 221 1.8K 182 12K 123 100K 104 820K 824
47 470 270 271 2.0K 202 15K 153 120K 124 1M 105
51 510 330 331 2.2K 222 18K 183 150K 154
56 560 390 391 2.7K 272 22K 223 180K 184
R1 R2 R1 R2
Ohms Thevenin
Equivalent CTS
Code Ohms Thevenin
Equivalent CTS
Code
25 50 17 ohm 150A 110 220 73 ohm 730A
30 50 19 ohm 190A 118 178 71 ohm 710A
30 620 29 ohm 290A 120 200 75 ohm 750B
33 4.7K 33 ohm 330A 120 180 72 ohm 720A
36 620 34 ohm 340A 120 120 60 ohm 600B
43 620 40 ohm 400A 150 150 75 ohm 750A
68 189 50 ohm 500B 160 260 99 ohm 990A
75 620 67 ohm 670A 160 240 96 ohm 960A
80 220 59 ohm 590A 160 270 100 ohm 101D
81 130 50 ohm 500A 162 260 100 ohm 101B
81 2.2K 78 ohm 780A 180 300 113 ohm 111B
100 200 67 ohm 670B 180 470 130 ohm 131C
100 430 81 ohm 810A 180 390 123 ohm 121A
100 150 60 ohm 600A 180 270 108 ohm 111A
106 169 65 ohm 650A 180 220 99 ohm 101A
Page 4 of 5 July 2008
CTS Electronic Components Leaded Surface Mount Series 768 www.ctscorp.com
(Cont.) Thevenin Equivalent Resistance Chart
1. All tolerances +/-2%. 2. Other values available on request. 3. Suffix letter has no significance - assigned in sequential order.
How to Order
R1 R2 R1 R2
Ohms Thevenin
Equivalent CTS
Code Ohms Thevenin
Equivalent CTS
Code
200 1.5K 176 ohm 171D 560 1K 359 ohm 361A
220 330 132 ohm 131A 680 1K 405 ohm 401A
220 270 121 ohm 121B 750 750 375 ohm 381A
220 220 110 ohm 111D 750 2.3K 566 ohm 571A
240 170 100 ohm 101C 1K 3.3K 767 ohm 771A
240 620 173 ohm 171C 1K 2K 667 ohm 671A
250 250 125 ohm 131B 1.1K 2.2K 733 ohm 731A
270 470 171 ohm 171A 1.2K 1.2K 600 ohm 601A
270 180 108 ohm 111C 1.5K 1.5K 750 ohm 751A
271 131 88 ohm 880A 1.5K 3.3K 1031 ohm 102A
330 470 194 ohm 191A 2K 2K 1000 ohm 102B
330 680 222 ohm 221A 2.2K 5.6K 1579 ohm 162A
330 390 179 ohm 181A 2.2K 4.4K 1467 ohm 152A
330 220 132 ohm 131D 2.2K 3.3K 1320 ohm 132A
330 330 165 ohm 171B 3K 6.2K 2022 ohm 202A
360 720 240 ohm 241B 3K 2K 1200 ohm 122A
360 600 225 ohm 231A 3.3K 4.7K 1939 ohm 192A
390 620 239 ohm 241A 3.9K 3.3K 1788 ohm 182A
470 1K 320 ohm 321A 4.7K 22K 3873 ohm 392A
470 680 278 ohm 281A 5K 5K 2500 ohm 252A
470 940 313 ohm 311A 6.8K 22K 5194 ohm 522A
500 500 250 ohm 251A 10K 51K 8361 ohm 842A
560 910 347 ohm 351A 50K 100K 33,333 ohm 333A
768 14 1 103 G P
TR13
1 Bussed
3 Isolated
5 Dual Terminator
7 Ladder
Refer to the EIA Code
Schematics
1 & 3: Page 3
5: Pages 3 & 4
NOTE: No dashes or spaces to appear in part number.
Example: 768141103GPTR13
Part Number Series
Number of Pins
Packaging
SP = Slide Pack
TR = Tape & Reel
Reel Size – TR13 = 13”
RoHS Compliant
Solder dipped 96.5Sn/03Ag/.5Cu
over Ni on Cu lead wire.
Schematic
Resistor Code
Tolerance
Schematic Schematic Schematic
1 & 3 5 7
J = ±5% Tolerance is 2% standard. F= ±1LSB
G = ±2% (Std.) Refer to dual terminator D= ±1/2LSB
F = ±1% codes on pages 3&4. (LSB=Least
D = ±1/2% Not necessary to add “G” Significant Bit)
after dual terminator code.
Page 5 of 5 July 2008
CTS Electronic Components Leaded Surface Mount Series 768 www.ctscorp.com
Packaging
Environmental Performance Specifications
Test Max. %
Delta R Mil. Std.
202 Method Test Cond. Test Description
Thermal Cycling 0.25% 107 B 5 cycles, -65°C to +125°C
Short Time Overload 0.25% 2 1/2 x rated voltage, 5 sec (100V Max.)
Moisture Resistance 0.5% 106 240 hours, 0.1 rated load, -10°C to +65°C, 90% RH
Load Humidity 1.0% 1000 hours, 0.1 rated load, 70°C, 85-92% RH
High Temp Exposure 1.0% 240 hours, no load, @ 125°C
Load Life 1.0% 108 F 2000 hours @ 70°C rated load
Resistance to Solder Heat 0.25% 30 seconds @ 218°C, dwell
Mechanical Shock 0.25% 213 I 100g, 1 msec., 3 shocks each plane
Vibration 0.25% 204 D 20g, 10-2000Hz, 4 hours/plane
Terminal Strength 0.25% 0.9 Kg. Pull, 30 sec., two 45° bends
Low Temp Storage 0.25% 24 hours @ -65°C, no load
Low Temp Operation 0.25% 45 min @ -65°C, full load
Flammability N/A 94V-0
Non-Fungus
Pass
per MIL-STD 810C
Resistance to Solvents
Pass
Isopropyl alcohol
Solderability
Pass
RMA Flux, 230°C, 5 seconds dip, 95% coverage
Tape & Reel 14P 16P 20P
Tape width 24mm 24mm 24mm
Tape pitch 12mm 12mm 12mm
Reel diameter 13" 13" 13"
#parts/reel 2000 2000 2000
Slide Packs
Tube length 20" 20" 20"
#parts/slide pac 48 43 35
