Nichrome Resistor Networks
on Ceramic Substrates
Models 664, 667, 668
Ordering Information
4
Model Series:
66 = Passivated Nichrome
on Ceramic
Number of Leads:
4= 8 leads
7=14 leads
8=16 leads
Circuit Type:
A=Isolated
B=Bussed
66 4 -A- 1002 A LF 7
66 4 -A-1002 A LF 7
Packaging Option:
7=7” Tape & Reel
13 = 13” Tape & Reel
(No Code used for Tubes)
Lead Finish:
LF=Lead Free (RoHS)
Tolerance Code
Resistance Code
Model Series:
66 = Passivated Nichrome
on Ceramic
Number of Leads:
4= 8 leads
7=14 leads
8=16 leads
Circuit Type:
A=Isolated
B=Bussed
Packaging Option:
7=7” Tape & Reel
13 = 13" Tape & Reel
(No Code used for Tubes)
Lead Finish:
No Code=SnPb
LF=Lead Free (RoHS)
Tolerance Code
Resistance Code
Resistance Code
4
First 3 digits are significant. Fourth digit denotes number of trailing zeros. For values less than 100, use
“R” to denote a decimal point. Example, 51 and 10000 ohms are coded as 51R0 and 1002 respectively.
Standard values follow E96.
Resistance Tolerance Code
Absolute Resistance Tolerances (%)
Ratio Tolerances (R1 Ref) (%)
First 3 digits are significant. Fourth digit denotes number of trailing zeros. For values less than 100, use “R” to denote a
decimal point. Example, 51 and 10000 ohms are coded as 51R0 and 1002 respectively. Standard values follow E96.
A
B
D
± 0.5
± 0.1
F
± 1.0
± 0.5
Accuracy Code at 25°C
Accuracy Code at 25°
C
A
± 0.1
± 0.05
B
± 0.1
± 0.1
D
F
± 1.0
±25
± 0.5
±5
±25
±5
Absolute Resistance Tolerances (%)
Temperature Coefficient of Resistance (ppm/°C)
Ratio Tolerances (R1 Ref)
Tracking (ppm/°C)
Temperature Coefficient of Resistance,
(%)
± 0.1
± 0.05
± 0.1
± 0.1
± 0.5
± 0.1
Temperature Coefficient of Resistance (ppm/°C)
Temperature Coefficient of
Packaging Options
Resistance,
Count/Package Type)
(Unit
Tracking (ppm/°C)
Model + Pin count
Tubes
7” Tape & Reel
664
100
50
50
1000
500
13” Tape & Reel
2500
Model + Pin count
667
Tubes
100
50
50
7” Tape & Reel
1000
500
500
500
13” Tape & Reel
2500
664
667
668
2500
2500
2500
2500
668
Typical Marking
Lot number printed
on backside of 664
4 Contact customer service for custom designs and features.
Contact customer service for custom designs and features.
General Note
BI Technologies Corporation
TT electronics reserves the right to make changes in product specification without notice or liability.
4200 Bonita Place
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
Fullerton, CA 92835 USA
Website:
www.bitechnologies.com
© TT electronics plc
May 29, 2008
page 3 of 3
4
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