Page 20
Metal Film Mini Series Resistors
SEI
Type RNM
•
•
•
•
•
•
•
•
RNM 1/4
1/4 @ 70°C (1/8 @ 125°C)
√PR
or 250V whichever is less
±1
±.5
±.25, ±.1
10Ω–2.15M
10Ω–499K
100Ω–100K
10Ω–1M
10Ω–499K
100Ω–100K
49.9Ω–1M
49.9Ω–499K
100Ω–100K
±100ppm/°C
±50ppm/°C
±25ppm/°C
±10
ppm/V
400V
10,000 meg min.
Precision Metal Film
Ideal Substitute Where Size Restraints Apply
1
Meets Requirements of MIL-R-10509
10 ohm – 1 megohm Resistance Range
Flame-retardant Coatings are Standard
Temperature Coefficients from
±50
to
±100ppm/°C
Blue Body Color
Pana-Sert Available (1/2W) – See Page 43 for Specifications
PERFORMANCE CHARACTERISTICS (TESTED PER MIL-STD-202)
ELECTRICAL
Power Rating (Watts)
Maximum Working Voltage
Tolerance
6
Resistance Range
by T.C.
Resistance Temperature
Coefficient
Voltage Coefficient
Maximum Pulse Voltage
Insulation Resistance
RNM 1/2
1/2 @ 70°C (1/4 @ 125°C)
√PR
or 350V whichever is less
±1
±.5
±.25, ±.1
1.0Ω–10M
10Ω–499K
100Ω–100K
10Ω–2.15M
10Ω–499K
100Ω–100K
49.9Ω–499K
49.9Ω–499K
100Ω–100K
±100ppm/°C
±50ppm/°C
±25ppm/°C
±10
ppm/V
500V
10,000 meg min.
(%)
(T1)
(T2)
(T9)
(T1)
2
(T2)
3
(T9)
4
MIL-R-10509
ENVIRONMENTAL (%∆R)
Moisture Resistance
Thermal Shock
Load Life @ 70°C — 1,000 hrs
Shock and Vibration
Resistance to Soldering Heat
Terminal Strength
Dielectric Withstand Voltage
Short Time Overload
Operating Temperature Range
TYPICAL
±0.5
±0.25
±0.5
±0.25
±0.1
±0.2
±0.25
±0.25
-55°C to +165°C
Char. D
±1.5
±0.5
±1.0
±0.5
±0.5
±0.2
±0.5
±0.5
-55°C to +165°C
Char. C
±0.5
±0.25
±0.5
±0.25
±0.1
±0.2
±0.25
±0.25
-55°C to +175°C
EIA RS-196
Class 1
±1.5
—
±2.0
—
—
—
±0.5
±0.5
—
DIMENSIONS:
FEATURE
A – Lead Length (typ.)
B – Body Length
C – Lead Diameter
D – Body Diameter
5
Inches (mm)
RNM 1/2
1.10
±.08
(28.0
±2.0)
.24
±.01
(6.0
±0.3)
.023
±.002
(0.60
±0.05)
.09
±.01
(2.4
±0.2)
RNM 1/4
1.10
±.08
(28.0
±2.0)
.13 +.01/-0 (3.2 +0.2/-0)
.018
±.002
(0.45
±0.05)
.073
±.006
(1.85
±0.15)
ORDERING INFORMATION
RNM
1/4
T1
1K
1%
NOTES
1. 1/2W rating in 1/4W package size and 1/4W rating in 1/8W size.
2. T1 marking – black dash between 4th & 5th bands.
3. T2 marking – green dash between 4th & 5th bands.
4. T9 marking – silver dot on body.
5. Dimensions are for bulk packaged product only.
Type
Wattage
T.C.
Resistance
Tolerance
SEI Electronics Inc.
•
P.O. Box 58789
•
Raleigh, NC 27658-8789
•
Telephone: (919) 850-9500
•
FAX: (919) 850-9504
Toll Free: (888) SEI-SEI-SEI
•
www.seielect.com
•
email: marketing@seielect.com
•
ISO 9002 / QS 9000 Registered
Rev. 12/00
Page 24
Metal Film Resistors
Performance Curves/Construction
PERFORMANCE CURVES
High-Frequency Characteristics (Typical)
Derating Curve (Typical)
Current Noise (Typical)
CONSTRUCTION
1. LEADS. Tinned copper leads.
2. METAL FILM. Evaporated metal film.
3. CERAMIC. Specially developed ceramic substrate.
4. EPOXY COATING. Conformal epoxy coating.
5. END CAP. End caps expansion fitted.
The average voltage coefficient is less than
±
10ppm/V between one-tenth and full-rated voltage.
The average change of resistance is less than 0.1% over a one-year period.
SEI Electronics Inc.
•
P.O. Box 58789
•
Raleigh, NC 27658-8789
•
Telephone: (919) 850-9500
•
FAX: (919) 850-9504
Toll Free: (888) SEI-SEI-SEI
•
www.seielect.com
•
email: marketing@seielect.com
•
ISO 9002 / QS 9000 Registered
Rev. 07/98
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