USB2251-NU-05 Standard Microsystems (SMSC), USB2251-NU-05 Datasheet - Page 42

• Manufacturer Part Number: USB2251-NU-05
• Description: ULTRA FAST USB 2.0 MULTI-SLOT FLASH MEDI
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2251-NU-05

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Revision 2.0 (09-29-09)
10.5
Thermal Resistance
Junction-to-Top-of-Package
Note 10.11 Thermal parameters are measured or estimated for devices with the exposed pad soldered
Package Thermal Specification
PARAMETER
to thermal vias in a multilayer 2S2P PCB per JESD51. Thermal resistance is measured
from the die to the ambient air.
Table 10.2 128-Pin VTQFP Package Thermal Parameters
(meters/sec)
VELOCITY
0
1
2
0
1
2
DATASHEET
42
SYMBOL
Θ
Ψ
JA
JT
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
VALUE
55
48
45
18
18
18
SMSC USB2250/50i/51/51i
UNIT
°C/W
°C/W
Datasheet