D2TO035C47R00FTE3 Vishay, D2TO035C47R00FTE3 Datasheet - Page 3

• Manufacturer Part Number: D2TO035C47R00FTE3
• Description: RESISTOR 47.0 OHM 35W SMD DPAK
• Manufacturer: Vishay
• Series: D2TO35r

Specifications of D2TO035C47R00FTE3

• Temperature Coefficient: ±150ppm/°C
• Resistance (ohms): 47
• Power (watts): 35W
• Composition: Thick Film
• Features: Non-Inductive
• Tolerance: ±1%
• Size / Dimension: 0.398" L x 0.346" W (10.10mm x 8.80mm)
• Height: 0.177" (4.50mm)
• Lead Style: Surface Mount (SMD - SMT)
• Package / Case: DPak (TO-263)
• Resistance In Ohms: 47.0
• Case: DPak (TO-263)
• Resistance: 47ohm
• Resistance Tolerance: ± 1%
• Power Rating: 35W
• Resistor Element Material: Thick Film
• Resistor Case Style: TO-263 (D2PAK)
• Termination Style: SMD/SMT
• Voltage Rating: 250 Volts
• Operating Temperature Range: - 55 C to + 175 C
• Dimensions: 8.8 mm W x 10.1 mm L x 4.5 mm H
• Product: Thick Film Resistors SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: D2TO 35 C 47U 1% TU50 E3; D2TO-47.0A

www.vishay.com
24
D2TO35
Vishay Sfernice
CHOISE OF THE BOARD
The user must choose the board according to the working conditions of the component (power, room temperature). Maximum
working temperature must not exeed 155 °C. The dissipated power is simply calculated by the following ratio:
P:
ΔT:
R
R
Example:
R
Thermal resistance R
Considering equation (1) we have:
ACCIDENTAL OVERLOAD
In any case the applied voltage must be lower than the maximum overload voltage of 375 V. The values indicated on the graph
below are applicable to resistors in air or mounted onto a board.
ENERGY CURVE
Single Pulse:
These informations are for a single pulse on a cold resistor at 25 °C (not already used for a dissipation) and for pulses of 100 ms
maximum duration.
The formula used to calculate E is:
with:
The energy calculated must be less than that allowed by the graph.
TH (j - c)
TH (c - a)
TH (c - a)
E (J):
P (W): Pulse power
t (s):
U (V): Pulse voltage
R (Ω): Resistor
:
:
for D2TO35 power rating 3.5 W at ambient temperature + 25 °C.
Pulse energy
Pulse duration
Expressed in W
Difference between maximum working temperature and room temperature
Thermal resistance value measured between resistive layer and outer side of the resistor. It is the thermal
resistance of the component: 4.28 °C/W.
Thermal resistance value measured between outer side of the resistor and room temperature. It is the thermal
resistance of the solder layer (according the quality of the soldering) and the thermal resistance of the board.
ΔT = 175 °C - 25 °C = 150 °C
R
R
TH (j - c)
TH (c - a)
TH (j - c)
+ R
= 42.8 °C/W - 4.28 °C/W = 38.52 °C/W
TH (c - a)
: 4.28 °C/W
= ΔT/P = 150/3.5 = 42.8 °C/W
0.01
100
0.1
10
1
10
For technical questions, contact:
-7
Surface Mounted Power Resistor
10
Thick Film Technology
-6
P
=
OVERLOAD DURATION IN s
-------------------------------------------------------------- -
[
R
TH (j - c)
E
10
-5
=
P x t
]
ΔT
+
[
10
R
=
TH (c - a)
-4
U
------ - x t
R
2
[e-mail]
]
10
1 ( )
-3
10
-2
10
-1
Document Number: 51058
Revision: 30-Apr-10