1-1623720-1 Tyco Electronics, 1-1623720-1 Datasheet - Page 2

• Manufacturer Part Number: 1-1623720-1
• Description: CCR2 4K7 10%
• Manufacturer: Tyco Electronics
• Series: CCR, CGSr

Specifications of 1-1623720-1

• Resistance (ohms): 4.7K
• Power (watts): 2W
• Composition: Ceramic
• Features: Pulse Withstanding
• Temperature Coefficient: ±1300ppm/°C
• Tolerance: ±10%
• Size / Dimension: 0.276" Dia x 0.748" L (7.00mm x 19.00mm)
• Lead Style: Through Hole
• Package / Case: Axial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Height: -
• Other names: CCR24K7KB

Literature No. 1773193
Issued: 12-08
Dimensions are shown for
reference purposes only.
Ceramic Composition Resistors
Type CCR Series
Application Notes
Limitations of Potential Pulsing on Fixed Ceramic Composition Resistors
Ceramic Composition resistors are susceptible to failure under some high voltage conditions. In circuitry where
there is a possibility of transient potentials, considerable high voltage may be applied to a resistor for a short
period of time. These notes are intended to aid the determining of “safe” potential level for the CCR Series when
used in pulse application.
For Pulse Power limitations please refer to the graph (fig.1). Power below that specified on the graph will,
generally not cause any significant degradation to the resistor, but please note that the resistance value may vary
slightly due to repeated pulsing over a long period of time. The circuit designer should also be aware of the fact
that the pulse voltage is limited even under the conditions on which the graph is based. The maximum peak
pulse voltage for these resistors is the lesser of (A) or (B) below.
(A)
V peak = √Po x R
Where:
“Po” is the pulse limit power taken from the graph.
“R” is the resistance value in ohms.
The Peak Power is defined as the maximum power dissipated at any point in time regardless of the waveform
shape.
The Pulse Waveform, if other than square wave, must first be converted to an approximate square wave as
shown below.
Application Notes
The following design rules determine if derating of the Pulse Limit Power (Po) obtained from the graph is required
for repetitive pulse applications.
1. If T off < 4µ seconds, or T off < 5m seconds and (T off/t) < 1, then the peak power is treated as continuous
power and, therefore, Pm = the resistor’s rated wattage.
2. If T off is > 4µ sec, but is < 100µ sec, and (T off/t) < 700, then Pm = Po x 0.01 x (T off/t)0.7.
3. If T off is > 100µ sec, and (T off/t) < 200, then Pm = Po x 0.01 x (T off/t)0.85.
4. If T off is > 4µ sec, but is < 100µ sec, and (T off/t) < 700, or T off is >100µ sec, and (T off/t) > 200,
then Pm = Po as obtained from the pulse power graph.
Where:
Pm: Derated Pulse Power (W)
Po:
T off: Off time between pulses (sec)
t:
Pulse Power from graph below (W)
Pulse width (sec)
Wp - Peak Power. Wo - Rated Power. t - Time to attenuate down to the rated power.
Wp - Peak Power. Wo - Rated Power. t - Time to attenuate down to the rated power.
Dimensions are in
millimetres unless
otherwise specified.
Specifications subject to
change.
(B)
CCR1
CCR1/2
1200V
CCR2
passives.tycoelectronics.com
800V
1600V
tycoelectronics.com