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Macrochip Series
High Voltage/High Resistance
Precision Thick Film Surface Mount
Resistance Power Voltage Standard Temp. Coefficient 85°-125°C
Series Range (Ohms) @25°C Rating 50PPM/°C 100PPM/°C
MC101 100Ω to 1,000M 0.75W 2.0KV 100Ω-100M 101M-1,000M
MC102 200Ω to 5,000M 1.50W 5.0KV 200Ω-250M 251M-5,000M
MC103 250Ω to 5,000M 2.00W 7.5KV 250Ω-100M 101M-5,000M
MC104 1K to 5,000M 2.50W 10.0KV 500Ω-450M 451M-5,000M
MC202 500Ω to 5,000M 2.50W 5.0KV 500Ω-200M 201M-5,000M
MC204 1K to 5,000M 3.25W 10.0KV 1K-375M 376M-5,000M
Contact Ohmite for custom configurations.
PERFORMANCE DATA
Characteristic Test Method Specification
Humidity MIL-STD-202, Method 103B,
Condition B
±0.25%
Dielectric Withstanding
Voltage
MIL-STD-202, Method 301,
750V
±0.25%
Insulation Resistance MIL-STD-202, Method 302,
Condition A or B
>10,000M or
greater dry
Thermal Shock MIL-STD-202, Method 107G,
Condition B, B-1, or F
±0.20%
Load Life MIL-STD-202, Method 108A,
Condition D
±1.0%
Resistance to Solvents MIL-STD-202, Method 215G No degrada-
tion of coating
or marking
Shock (Specified Pulse) MIL-STD-202, Method 213B,
Condition I
±0.25%
Vibration, High
Frequency
MIL-STD-202, Method 204D,
Condition D
±.020%
Power Conditioning MIL-R-49462A, Par 4.8 ±0.50%
Ohmite’s MacroChip resistors bring
precision high voltage capabilities to
surface mount applications. Designed
with thick film on alumina substrate
technology, the resistors can be pro-
vided in precision tolerances, high volt-
age ratings, and high resistance values.
The planar package design is low profile
for easy use with instrumentation, medi-
cal equipment, voltage regulators, and
power supplies.
FEATURES
•Non-inductivedesign(less
than 50 nanohenries)
•Lowvoltagecoefficient
•Surfacemount
•PdAgterminations
•J-bendterminalsforapplica-
tions involving shock and
vibration
SERIES SPECIFICATIONS
CHARACTERISTICS
Resistor Thick film on Alumina
Resistance Range 100 Ohms to 5,000M
Power Rating 0.75W to 3.25W
Voltage Rating 2.0KV to 10.0KV
Tolerance 0.5% to 20%
Operating
Temperature
-55°C to +180°C
TCR and VCR See chart below
Solder Silver solder is recommended for
Macrochip resistors. Leaching of
the silver in the termination will
occur if non-silver solder is used.
60/40 tin-lead solders are not
recommended for use with the
Macrochip product.
Recommended Solder Profile
300
Temperature °C
Time (sec.)
Preheating
120 sec.
Soldering
Cooling
200
50
500 100 150 250200
0
250
100
150
60 sec.
10 sec.
Preheating: 145°C ±15°,
max. 120 sec.
Soldering: min. 220°C,
max. 60 sec.
Max. Temp.: 260°C ±5°,
10 sec.
APPLICATIONS
•Medicalinstrumentation
•PowerSupplies
•Avionics
•LightMagnificationSystems