RES-MACROCHIP Datasheet, PDF (1/2 Pages) Ohmite Mfg. Co. – Low voltage coefficient

Macrochip Series
High Voltage/High Resistance
Precision Thick Film Surface Mount
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.
F e at u r e s
• Non-inductive design (less
than 50 nanohenries)
• Low voltage coefficient
• Surface mount
• Pd Ag terminations
• J-bend terminals for applica-
tions involving shock and
vibration
A p p l i c at i o n s
• Medical instrumentation
• Power Supplies
• Avionics
• Light Magnification Systems

Resistance
Series
Range (Ohms)
MC101 100Ω to 1,000M
MC102 200Ω to 5,000M
MC103 250Ω to 5,000M
MC104 1K to 5,000M
MC202 500Ω to 5,000M
MC204 1K to 5,000M
Contact Ohmite for custom configurations.
S ER I E S S PEC I F I CAT I ON S
Power
@25°C
0.75W
1.50W
2.00W
2.50W
2.50W
3.25W
Voltage
Rating
2.0KV
5.0KV
7.5KV
10.0KV
5.0KV
10.0KV
Standard Temp. Coefficient 85°-125°C
50PPM/°C
100PPM/°C
100Ω-100M
101M-1,000M
200Ω-250M
251M-5,000M
250Ω-100M
101M-5,000M
500Ω-450M
451M-5,000M
500Ω-200M
201M-5,000M
1K-375M
376M-5,000M
c h a r a c t e r is t i c s
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 -55°C to +180°C
Temperature
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
Soldering
10 sec.
250
200 _Preheating
120 sec.
150
60 sec.
Cooling
100
50
0
0 50 100 150 200 250
Time (sec.)
Preheating: 145°C ±15°,
max. 120 sec.
Soldering: min. 220°C,
max. 60 sec.
Max. Temp.: 260°C ±5°,
10 sec.
performance data
Characteristic Test Method
Humidity MIL-STD-202, Method 103B,
Condition B
Dielectric Withstanding MIL-STD-202, Method 301,
Voltage 750V
Insulation Resistance MIL-STD-202, Method 302,
Condition A or B
Thermal Shock MIL-STD-202, Method 107G,
Condition B, B-1, or F
Load Life MIL-STD-202, Method 108A,
Condition D
Resistance to Solvents MIL-STD-202, Method 215G
Shock (Specified Pulse) MIL-STD-202, Method 213B,
Condition I
Vibration, High MIL-STD-202, Method 204D,
Frequency Condition D
Power Conditioning MIL-R-49462A, Par 4.8
Specification
±0.25%
±0.25%
>10,000M or
greater dry
±0.20%
±1.0%
No degrada-
tion of coating
or marking
±0.25%
±.020%
±0.50%
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