Pulse Withstanding Fusible
Flameproof Metal Film Resistors
EMC Series
Application Notes
1. If the resistors are to dissipate full rated power, it is recommended that the terminations should not be soldered closer than
4mm from the body.
2. Due to operating temperature limits imposed by some PCB materials, derating may be necessary. An estimate of the
temperature rise to be expected can be calculated using the thermal impedance figures given under Electrical Data.
3. To protect against fire under all conditions of overload, a positive clearance of at least 13mm should be provided between the
body of the resistor and any combustible materials.
4. EMC resistors can also be supplied loose packed with radial, goalpost or lancet pre-formed leads, tape packed with radial pre-
formed leads, or in blister tape with Z-formed leads for SMD mounting. Consult factory for details.
Packaging
Our standard packaging for EMC is taped and boxed. The critical dimensions are shown in Figure 1. The component wires will
not protrude beyond the outside edge of the tapes. Alternative packaging is available by request.
mm
EMC2
Figure 1
5
b
68
6
f 1
b
f 2
6
Body location f 1 – f 2
Standard Quantities Per Package
1.4 mm
Type
Ammo Pack
EMC2
2000
Ordering Procedure
Specify type reference, value and tolerance as shown in this example of EMC2 at 33 ? , 20%:
Type
Value (use IEC62 code)
Tolerance (use IEC62 code)
K
10%
M
20%
Packing
EMC2 - 33R
M
I
I
Ammo
EMC2
2000/box
Standard
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
? TT electronics plc
07.13
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