METAL FOIL RESISTOR
FL SERIES
FEATURES
Available in 4 sizes
Ultra-High Precision
Non-Inductive
Low Temperature Coefficient
Ultra Stable
Low Thermal EMF
Tracking T.C. 0±2ppm/ °C
SPECIFICATIONS
Type Wattage @ 125°C Maximum Work Voltage Ohmic Range
FL500 0.3 300 0.3-10K
FL501 0.4 300 0.1-20K
FL502 0.5 350 0.1-26K
FL503 1.0 350 0.1-22K
TOLERANCES & TEMPERATURE COEFFICIENTS
Resistance
Ohm
Resistance
Tolerance (%)
TCR (PPM)
10 to 25°C -55 to 125°C
0.1 - .99 0.1 to 1.0 20 90
1.0 - 9.9 0.02 to 1.0 5 20
10.0 - 26K .005 to 1.0 3 5
Consult factory for other TC's
MAX. DIMENSIONS (mm)
Type H L W S
FL500 8.5 8.0 3.5 3.81
FL501 10.2 10.2 3.5 7.5
FL502 16.3 16.3 3.5 10.0
FL503 19.3 19.3 6.0 12.3
Leads 0.6 dia mm tin cu

Performance
Parameters
Test Conditions
Mil-R-122 Specification
Typical Test Data
Max. Rated Operating Temperature
-
125°C
Working Temperature Range
-
-55°C to + 155°C
Max. Working Voltage
-
FL500 & FL501=300V, FL502 & FL503=350V
Power Conditioning 25°C Rated Voltage, 96 hrs.
±0.02%
±0.005%
Thermal Shock -65°C/30min <-->+175°C/30 min, 5 cycles
Overload Rated voltage x 2.5, 5 Sec
Solderability 245°C, 5sec
over 95% coverage
over 95% coverage
Resistance to Solvents (1) Isopropyl Alcohal + Mineral Spirits (2) Water + Butyl Cellosolve + Monoethanolamine
no damage
no damage
Low Temperature Storage and Operation -65°C, No Load, 24 hrs.-->Rated Voltage, 45 min.
±0.01%
±0.0025%
Terminal Strenength 0.908Kg(2pounda), 10sec.
±0.01%
±0.0025%
Dielectric Withstanding Voltage Atmospheric: AC300V, 1min/ Barometric: 8mmHg, AC200V,1min.
±0.01%
±0.0025%
Insulation Resistance DC500V, 2min.
over 10,000M
over 10,000M
Resistance to Soldering Heat 350°C, 3sec.
±0.01%
±0.0025%
Moisture Resistance +65°C~-10°C, 90%RH~98%RH, Rated Voltage, 10 Cycles (24hrs)
±0.05%
±0.01%
Shock 100G, 6ms, Sawtooth Wave, X,Y,z, each 10 shocks
±0.01%
±0.0025%
Vibration, High Frequency 200G, 10Hz~10Hz, 20min,X,Y,Z, each 2.5hrs
±0.01%
±0.0025%
Life 125°C, Rated Power, 1.5hr.-ON, 0.5hr.-OFF, 2000hrs
±0.05%
±0.015%
Life 85°C Power Rating 85°C, Rated Power x 2, 1.5hr. -ON, 0.5hr.-OFF, 2000hrs.
±0.05%
±0.015%
Life 25°C Power Rating 25°C, Rated Power x 2, 1.5hr. -ON, 0.5hr.-OFF, 2000hrs.
±0.05%
±0.015%
Storage Life -15°C~35°C, 15%RH~75%RH, No Load, 1000hrs
±0.005%
±0.015%
High Temperatur Exposure 175°C, No Load, 2000hrs.
±0.05%
±0.015%
Current Noise
-
-32dB
-42dB
Thermal EMF
-
0.0001%/V
0.00003%/V
Voltage Coefficient
-
1.0µV/°C
0.1µV/°C
ORDERING INFORMATION
Example: 0.3w 100 ohm 5ppm .01%
FL500
100R0
C7
T
Type
Resistance
Temp Coefficient
Tolerance
5th digit is multiplier <1000 use R for decimal
C8
3
C7
5
C6 10
C3 20
C1 90
T = .01
Q = .02
A = .05
B = .10
C = .25
D = .50
F = 1

TO ORDER PRODUCT
E mail: microohm@mail.com
Call Toll Free: 1-800-845-5167
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