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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.MMBZ5221B - MMBZ5257B Zener Diodes
November 2015
MMBZ5221B - MMBZ5257B
Zener Diodes
Tolerance = 5%
CONNECTION
3
DIAGRAM
3
2
1
1 2 NC
SOT-23
(1, 2)
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at T = 25C unless otherwise noted.
A
Symbol Parameter Value Unit
Referencing R , T = 25C 250
JA A
P Power Dissipation mW
D
Referencing , T = 25C 550
JL L
(3)
R Junction-to-Ambient Thermal Resistance 465 C/W
JA
Junction-to-Lead Thermal Characteristics
220 C/W
JL
(with reference to Cathode)
T Storage Temperature Range -55 to +150 C
STG
T Operating Junction Temperature +150 C
J
Note:
1.These ratings are based on a maximum junction temperature of 150C.
2.These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle
operations.
3. Device mounted on FR-4 PCB, board size = 76.2 mm x 114.3 mm
2004 Fairchild Semiconductor Corporation www.fairchildsemi.com
MMBZ5221B - MMBZ5257B Rev. 1.5