C&H Technology D2TO20 - Manual (Page 5)

Document Number: 51055 For technical questions, contact: [email protected] www.vishay.com
Revision: 24-Nov-08 39
D2TO20
Surface Mounted Power Resistor
Thick Film Technology
Vishay Sfernice
Repetitive or Superimposed Pulses:
The following formula is used to calculate the “equivalent“ energy of a repetitive pulse or the “equivalent energy“ of a pulse on a
resistor that is already dissipating power.
with:
E
c
(J): Equivalent pulse energy
E (J): Known pulse energy
P
r
: Resistor power rating
P
a
: Mean power being dissipated
The energy calculated must be less than that allowed by the graph and the average power dissipated ( P
a
) must not exceed the
continuous power of resistor.
PACKAGING
• Reel
• Tube
• Tape dimensions (mm) for reel:
MARKING
Model, Style, Resistance Value (in
Ω), Tolerance (in %), Manufacturing Date, Vishay Trademark
E
c
E x 1
P
a
P
r
------ + ⎝ ⎠
⎛ ⎞
=
ORDERING INFORMATION
D2TO 020 C 100 k Ω ± 1 % XXX e3
MODEL STYLE CONNECTIONS RESISTANCE
VALUE
TOLERANCE CUSTOM DESIGN LEAD (Pb)-FREE
F = ± 1 %
G = ± 2 %
J = ± 5 %
K = ± 10 %
Optional on request:
shape, etc
SAP PART NUMBERING GUIDELINES
GLOBAL
MODEL
SIZE LEADS OHMIC VALUE TOLERANCE PACKAGING LEAD (Pb)-FREE
D2TO 020 C = Surface mount The firts four digits are
significant figures and the
last digit specifies the
number of zeros to follow.
R designates decimal point.
48R70 = 48.7 Ω
48701 = 48 700
Ω
10002 = 100 000 Ω
R0100 = 0.01
Ω
R6800 = 0.68
Ω
27000 = 2700 Ω = 2K7 Ω
F = 1 %
G = 2 %
J = 5 %
K = 10 %
R = Reel 500 pieces
T = Tube 50 pieces
E3 = Pure tin
16
10.6
15.8 24
4.9
0 2 0 C R 2 0 0 R 3 T D O 2 0 K E