Maxim DS33Z41 Thermal Characteristics -3. Thermal Characteristics, Theta-JA vs. Airflow

DS33Z41 Quad IMUX Ethernet Mapper

Note 1: Typical power is 145mW.

Note 2: All outputs loaded with rated capacitance; all inputs between VDD and VSS; inputs with pullups connected to VDD.

Note 3: RST pin held low, or RST bit set.

Note 4: RST pin held low, or RST bit set. All clocks stopped.

11.1Thermal Characteristics Table 11-3. Thermal Characteristics

	PARAMETER	MIN	TYP	MAX	NOTES
Ambient Temperature		-40°C		+85°C	1
Junction Temperature				+125°C
Theta-JA (θJA) in Still Air for 169-Pin		+52.7°C/W			2
14mm CSBGA
Note 1:	The package is mounted on a four-layer JEDEC standard test board.
Note 2:	Theta-JA (θJA) is the junction to ambient thermal resistance, when the package is mounted on a four-layer JEDEC standard
	test board.
Table 11-4. Theta-JA vs. Airflow
	AIR FLOW	THETA-JA
	0m/s	52.7°C/W
	1m/s	45.8°C/W
	2.5m/s	43.8°C/W

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