SPH1505LF Datasheet, PDF (1/2 Pages) IRC - a TT electronics Company. – GENERAL-PURPOSE FAILSAFE MOLDED WIREWOUND RESISTOR

SPH/SPF SERIES
GENERAL-PURPOSE FAILSAFE
MOLDED WIREWOUND RESISTOR
• SPF is Fusible
• 2 watt rated with 1 watt dimensions
• ±5%, ±10% tolerance
• 0.1 ohm to 2400 ohms
• TCR's as low as ±150 ppm/°C std (custom TC's available)
• Drop-in replacement for BWH/BWF
• Weldable and solderable leads
• Lead Free, ROHS Compliant Construction Available
SPECIFICATIONS:
IRC Type
EIA RS-344 Style
MIL-R-11 Style
Resistance - Std.
Tolerance - Std.
Power Rating
SPH
CRU 2
RC32/RC42
0.1Ω to 2400Ω
±5%, ±10%
2 watt @ 70°C
1 watt @ 115°C
Derating to 0 @ 160°C
SPF
CRU 2
RC32/RC42
0.1Ω to 1000Ω
±5%, ±10%
2 watt @ 70°C
1 watt @ 115°C
Derating to 0 @ 160°C
Max. Continuous Working
Voltage
Min. Insulation
Dry
Resistance
Wet
Min. Dielectric
ATM
Withstanding Volts
(RMS) Reduced Pressure
Hotspot Temperature Rise
Typical Load Life
Current Noise
√PR
10,000 Meg
100 Meg
1000 V
625V
145°C @ 2 watts
5%
Negligible
√PR
10,000 Meg
100 Meg
1000 V
625V
145°C @ 2 watts
5%
Negligible
DIMENSIONS (Inches and (mm)):
3
1
4
2
See notes below
1. Resistive Element
All resistor types have resistance alloy
winding on a braided fiberglass substrate.
Intermediate silicone coatings are used to
enhance processibility and to provide pro-
tection to the resistive element.
2. Termination
The SPH and SPF resistors are terminated
using an alloy coated copper flashed steel
lead welded to a cap of the same material.
This termination assembly is mechanically
crimped, utilizing an improved crimp design,
to the resistive element.
3. Encapsulation
The SPH and SPF are encapsulated utiliz-
ing a compression molded phenolic plastic
material. The SPF has a flame-resistance
coating applied over the resistive element
to provide flammability protection when
destructive overloads may occur.
4. Marking
All products are marked utilizing heat and
solvent resistant color code bands consis-
tent with EIA/MIL requirements. The first
band is double width to designate wire-
wound construction. A fifth band, blue in
color, is used for flameproof identification.
IRC TYPE
A
SPH
0.562±0.010
(14.3±0.25)
SPF
0.562±0.010
(14.3±0.25)
B
0.225±0.008
(5.72±0.20)
0.225±0.008
(5.72±0.20)
C
0.032±0.002
(0.813±0.05)
0.032±0.002
(0.813±0.05)
D
1.50±0.126
(38.1±3.2)
1.50±0.126
(38.1±3.2)
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: [phone] • Fax: [phone] • www.irctt.com
A subsidiary of
TT electronics plc