T
HIN
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ILM
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ESISTORS
68 Series 0.020”x0.020”
Satcon Electronics 68 series .020” x .020” Thin-film Chip Resistors are available in both top-contact
and back-contact versions in a wide range of resistances and tolerances. Values are available from
1 ohm to 500 Kohms. Both passivated nichrome and tantalum-nitride resistor versions are available.
Nichrome provides excellent stability and temperature coefficient in hermetic applications while
tantalum-nitride provides superior moisture-resistance for non-hermetic applications.
Electrical Specifications
Parameter
Power Rating
Life
Noise
High Temp Exposure
TCR (68AL, 68BCN)
TCR (68ALT, 68BCR)
Operating voltage
Moisture resistance
Thermal shock
Limit
100 mW
+/-0.2% max
-35 dB typ
+/-0.2% max
+/-50 ppm/C
-50 to -120 ppm/C
100 VDC max
+/-0.5% max
+/-0.5% max
Test conditions
(derated at 70 deg. to 0 mW @ 150 deg.)
1000 hours @ 125 degrees C
MIL-STD-202 method 308
100 hours at 150 degrees C
-55 to 125 degrees C
-55 to 125 degrees C
MIL-STD-202 method 106
MIL-STD-202 method 107
TypicalConfigurations
Values below 20 oh ms
Values from 20 to 200 ohms
Values above 200 ohms
Mechanical Specifications
Substrate
Bond pad metalization
Size
Thickness
Bond pad dimensions
Protective overcoat (passivation)
Back side
Silicon with 1 micron thermal oxide
Gold, 100 microinches
0.021 x .021 +/-.002 (0.53 x 0.53 mm +/- .05mm)
0.013 +/-.003 (0.33 +/-0.07 mm)
0.004 x .004 minimum (0.1 x 0.1 mm)
0.6 microns SiO2 (68AL & 68BCN versions only)
Lapped silicon (68AL, 68ALT), Gold (68BCN, 68BCR)
SatCon Electronics Inc.
Tel: 508-485-6350 Fax : 508-485-5168
165 Cedar Hill Street, Marlborough, Ma 01752
www.satconelectronics.com
T
HIN
F
ILM
C
HIP
R
ESISTORS
68 Series 0.020”x0.020”
All parts are 100% electrically tested, sample tested per MIL-STD-38534 section 3.4, and
visually inspected to MIL-STD-883 requirements. Chips are supplied in standard 2"x 2"
matrix tray packaging.
Ordering Information
Base Part Code
Value (3 digits plus exponent)
T
olerance Letter
X
B=0.1%
C=0.25%
D=0.5%
F=1%
G=2%
J=5%
K=10%
M=20%
68xxx-
68AL(Nichrome top-contact)
68ALT(Tantalum-nitride top-
contact)
68BCN(Nichrome back-contact)
68BCR(Tantalum-nitride back-
contact)
NNNE
(Under 100 ohms, an R indicates the
decimal point location)
Ordering Examples:
68AL-5002F is a 50 kilohm 1% resistor with nichrome metalization.
68ALT-75R0J is a 75 ohm 5% resistor with tantalum-nitride metalization.
68BCR-5R10K is a 5.1 ohm 10% back contact resistor with tantalum-nitride metalization
Availability and Limitations:
68AL & 68BCN series are available from 2 ohms to 500 kohms
68ALT & 68BCR series are available from 1 ohm to 250 kohms
B tolerance is available above 250 ohms
C tolerance is available above 100 ohms
D tolerance is available above 50 ohms
F tolerance is available above 25 ohms
G tolerance is available above 12 ohms
J tolerance is available above 5 ohms
SatCon Electronics also manufactures Custom Substrates on a
variety of materials, a wide range of Microwave, PIN Diode Drivers,
and Custom Hybrid Circuits. Please contact the factory or your local
SatCon Electronics representative for more information.
(Specifications subject to change without notice)
SatCon Electronics Inc.
Tel: 508-485-6350 Fax : 508-485-5168
165 Cedar Hill Street, Marlborough, Ma 01752
www.satconelectronics.com
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