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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 8.7V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：8.7 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：8 Ohms
- Current - Reverse Leakage @ Vr：3 µA @ 6.5 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 CMKZ5238B TR is a surface mount triple isolated silicon Zener diode from Central Semiconductor Corp, packaged in an ULTRAmini SOT-363 case. It contains three independent Zener diodes with a nominal voltage of 8.7 V and a tolerance of ±5%. Each diode operates at a test current of 20 mA, featuring a maximum dynamic impedance of 8.0 Ω and a knee impedance of 600 Ω. The device supports a power dissipation of 200 mW and functions within a junction temperature range of -65°C to +150°C.
Feature Summary
- Triple isolated silicon Zener diodes integrated into a single compact surface mount package
- Designed for industrial, commercial, entertainment, and computer applications
- Provides independent voltage regulation for multiple circuits within limited board space
Applications
- Industrial control systems requiring multi-channel voltage reference
- Commercial equipment utilizing compact power management solutions
- Computer hardware needing isolated voltage regulation
- Entertainment electronics with space-constrained designs
Procurement Notes
This component has been officially classified as End of Life (EOL) by the manufacturer. Current availability is restricted to existing stock only, with no new production scheduled. Buyers should verify supplier inventory status carefully before ordering, as replacement parts are not available through standard channels. Last purchase orders may be subject to specific timeframes defined by the manufacturer's discontinuation notice.
Selection Notes
Select this part when designing circuits requiring three isolated 8.7 V references in a small footprint. Verify that the 200 mW total power dissipation and 8.0 Ω dynamic impedance meet system requirements. Ensure the design accommodates the SOT-363 package dimensions and thermal constraints. Confirm compatibility with the specified operating temperature range of -65°C to +150°C for the intended environment.
Part Context
The CMKZ5238B belongs to the CMKZ5221B series, which encompasses various Zener voltages from 2.4 V to 47 V in the same triple-isolated SOT-363 package. This series allows designers to mix different voltage levels within a single component. The 'TR' suffix indicates tape and reel packaging, suitable for automated surface mount assembly processes.
Replacement Considerations
No direct replacement part numbers are provided by the manufacturer for this discontinued series. The official notice states 'N/A, Stock Only' for all variants in the CMKZ5221B through CMKZ5261B range. Engineers must identify alternative components from other manufacturers or redesign using discrete diodes if stock is exhausted.
FAQ
What is the marking code for the CMKZ5238B?
The marking code for the CMKZ5238B is 8NCT.
What is the maximum reverse current for each diode in this package?
The maximum reverse current is 3.0 μA at a reverse voltage of 6.5 V.
Is this component lead-free?
Yes, the datasheet specifies PbFree plating options, and the standard offering is lead-free compliant.
