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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 39V SOT-363
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：3 Independent
- Voltage - Zener (Nom) (Vz)：39 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：80 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 30 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 CMKZ5259B 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 39V (min 37.05V, max 40.95V) at a test current of 3.2mA. Each diode has a maximum dynamic impedance of 80Ω and a reverse current of 0.1μA at 30V. The device supports a power dissipation of 200mW per diode and operates within a junction temperature range of -65°C to +150°C.
Feature Summary
- Triple isolated configuration providing three independent Zener diodes in a single compact package
- Designed for industrial, commercial, entertainment, and computer applications
- Features 5% tolerance on Zener voltage for precise regulation
Applications
- Industrial control systems
- Commercial equipment
- Entertainment electronics
- Computer applications
Procurement Notes
Verify component status as the CMKZ5221B series is classified as End of Life. Replacement availability is limited to stock only with no direct substitute part numbers provided by the manufacturer. Confirm lead times and final shipment dates with authorized distributors before placing orders.
Selection Notes
Select this component when space-constrained designs require multiple isolated voltage references. Ensure the 39V nominal rating matches circuit requirements. Verify thermal management capabilities given the 200mW dissipation limit per diode in the SOT-363 package.
Part Context
Part of the CMKZ5221B through CMKZ5261B series offering various Zener voltages from 2.4V to 47V. All devices share the same SOT-363 footprint and electrical characteristics structure, differing primarily in breakdown voltage and marking codes.
Replacement Considerations
No official replacement part numbers are listed by Central Semiconductor. Only existing stock is available. Engineers should evaluate alternative triple Zener packages from other manufacturers if new production is required.
FAQ
What is the marking code for the CMKZ5259B?
The marking code for the CMKZ5259B is 1K8T.
What is the maximum reverse current specified for this device?
The maximum reverse current is 0.1μA measured at 30V.
Is this component currently in active production?
No, the CMKZ5221B series including CMKZ5259B is classified as End of Life (EOL).
