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The MMBZ5238BTW_R1_00001 is a surface mount silicon Zener diode from the Panjit MMBZ5221BTW series, housed in an SOT-363 plastic case. It provides a nominal Zener voltage of 8.7 V with a tolerance range of 8.27 V to 9.14 V. The device supports a power dissipation of 200 mW at 25°C and operates within a junction temperature range of -55°C to +150°C. Electrical characteristics include a maximum Zener impedance (ZZT) of 8 Ω at IZT = 20 mA and a maximum reverse leakage current of 6.5 μA at VR = 9 V.
Verify the specific ordering suffix against manufacturer documentation to confirm packaging details and reel specifications. Ensure compliance with environmental directives such as RoHS 2.0 and IEC 61249 when integrating into final assemblies. Confirm that the SOT-363 package dimensions align with the intended PCB footprint and mounting pad layout.
Select this component for applications requiring an 8.7 V reference with 200 mW power handling in a compact SOT-363 package. Consider the 8 Ω dynamic impedance for regulation accuracy. Verify thermal management capabilities given the -55°C to +150°C operating range and derating curves provided in the datasheet.
This part belongs to the MMBZ5221BTW ~ MMBZ5267BTW series of surface mount silicon Zener diodes manufactured by Panjit International Inc. The series covers nominal voltages from 2.4 V to 75 V, all sharing the same SOT-363 mechanical outline and general electrical rating structure.
Direct substitutes within the same series include MMBZ5237BTW (8.2 V) and MMBZ5239BTW (9.1 V). Cross-brand replacements must match the SOT-363 package, 200 mW power rating, and 8.7 V nominal voltage with compatible impedance and leakage specifications.
The marking code for the MMBZ5238BTW is F3.
The maximum Zener impedance (ZZT) is 8 Ω measured at a test current (IZT) of 20 mA.
No. The manufacturer explicitly states these products are not designed or authorized for equipment requiring high reliability, including medical instruments, transportation equipment, or aerospace machinery.