PCF2CT52A102K KOA [KOA Speer Electronics, Inc.], PCF2CT52A102K Datasheet - Page 4

• Manufacturer Part Number: PCF2CT52A102K
• Description: Fixed Ceramic Composition Resistors
• Manufacturer: KOA [KOA Speer Electronics, Inc.]

KOA SPEER ELECTRONICS, INC.
5. Characteristics (Continued)
Bolivar Drive
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
10
11
8
9
Solderability
(Method 208)
Resistance
to solvents
Dielectric
withstanding voltage
(Method 301)
Flame-proof
(UL-492-2)
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P.O. Box 547
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Bradford, PA 16701
Over 3/4th of the lead-
wire surface area shall
be covered with solder,
when judged visually.
No evidence of
mechanical damage
in appearance and
marking.
The resistor develops
no dielectric breakdown.
Resistance change shall
be ± (1% + 0.05 ohm)
of the Pre-test value.
The coating cab withstand the overload test, with no possibilities of ignition.
1. Overload Test as per UL-492, Item 13:
A piece of cotton cloth (A piece of gauze untreated corresponding to Nos 32-28
that measures 36 inches in width and 14 - 15 yards per pound) is wound around
a resistor. Then, the resistor is applied with voltage which is increased by two
times, three times, . . . ten times the rated voltage at intervals of one minute till
the resistor is broken down. If the cotton cloth is found igniting, the resistor shall
be considered unacceptable.
exposed to gas burner flames or heated red with nichrome wire wounded, the
coating will not flame, nor soften and melt to drop.
2. Hot-wire Ignition Test as per UL-492-2, Item 9:
A nichrome wire (Mixture of Cr 20% and Ni 80% which measures 0.0201 inches
in diameter and 865 feet per pound, and having 1.61 ohm per foot) is wound a
resistor at intervals of 1/4 inch so as to result in power consumption of 65W or
more. Then, the resistor is heated red with electricity supplied to the nichrome wire.
The coating is completely proof against any kind of heat sources. Even if
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USA
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814-362-5536
The lead-wire is immersed for 2 - 3 seconds
in methanol solution containing rosin body is
immersed in melted solder at temperature of
235 ±5°C for a period of 3 ± 0.5 sec. as far as
the point 2 - 2.5mm from the resistor body.
1. Sample shall be immersed in ultrasonic
solvents of 28kHz frequency, 150w (0.3w/cm
power at 35 ± 5°C for 2 minutes.
2. After samples shall be immersed in specified
solvents (following table) for 3 minutes, the resistor
shall be immediately wiped with a dry cloth
(velvet or gauze)
1. Iso-proryle alcohol
2. 1-1-1 trichloroethane
The resistors shall be clamped in the trough of a
90°C metallic V-block of such size that the resistor
body does not extend beyond the ends of the
trough. The resistor leads shall be positioned such
that they are no closer to the V-block than if they
were parallel to the sides of the V-block. This
prevents unnecessary proximity of the leads to
the block, while permitting complete seating of
the resistor body in the block.
current supply at commercial line frequency not
more than 100 Hertz as specified in Table 1 shall
be applied at the rate of approximately 100 volts
per second between resistor terminals connected
together and the V-block, and held for 5 seconds.
(Solvents)
Sine wave RMS voltages from an alternating
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