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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 27V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：27 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：41 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 21 V
- Operating Temperature：-65°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-363
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The CMKZ5254B TR is a surface mount triple isolated silicon Zener diode from the Central Semiconductor CMKZ5221B series, packaged in an ULTRAmini SOT-363 case. It contains three independent Zener diodes with a nominal voltage of 27V and a tolerance of ±5%. Each diode operates at a test current of 4.6mA, featuring a maximum dynamic impedance of 41Ω at IZT and 600Ω at IZK. The device has a maximum power dissipation of 200mW per diode at 25°C, a reverse current of 0.1μA at 10V, and a temperature coefficient of +0.082%/°C. It supports operating temperatures from -65°C to +150°C.
Feature Summary
- Triple isolated silicon Zener diodes integrated into a single ULTRAmini SOT-363 surface mount package
- Designed for industrial, commercial, entertainment, and computer applications
- Provides independent voltage regulation for three separate circuits within a compact footprint
Applications
- Industrial control systems requiring multiple voltage references
- Commercial equipment needing compact multi-channel regulation
- Computer hardware utilizing space-constrained surface mount designs
Procurement Notes
This component is classified as End of Life (EOL) by Central Semiconductor Corp. No new production is available; only existing stock may be sourced. Last purchase orders were accepted six months after the notice date, with final shipments occurring twelve months post-notice. Verify availability through authorized distributors holding remaining inventory.
Selection Notes
Select this part when a triple isolated Zener configuration in an SOT-363 package is required. Ensure the 27V nominal voltage and ±5% tolerance align with circuit specifications. Consider the 200mW power dissipation limit per diode and the specific temperature coefficient during thermal design. Verify that the EOL status does not conflict with long-term supply chain requirements.
Part Context
The CMKZ5254B TR belongs to the CMKZ5221B series, which spans Zener voltages from 2.4V to 47V in the same SOT-363 package. This series provides a standardized solution for multi-channel voltage regulation needs across various industrial and commercial electronic applications manufactured by Central Semiconductor Corp.
Replacement Considerations
No direct replacement part numbers are listed by Central Semiconductor for the CMKZ5254B TR. The manufacturer indicates 'N/A, Stock Only' for all series variants. Contact [email protected] for assistance locating alternate sources or equivalent components from other manufacturers.
FAQ
What is the marking code for the CMKZ5254B?
The marking code for the CMKZ5254B is 1E8T.
What is the maximum reverse current for each diode in this package?
The maximum reverse current is 0.1μA measured at VR = 10V.
Is this component lead-free?
Yes, standard ordering implies lead-free compliance unless the TIN/LEAD suffix is explicitly added to the part number.
