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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 39V SOT-323
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：39 V
- Tolerance：±5.13%
- Power - Max：275 mW
- Impedance (Max) (Zzt)：130 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 27.3 V
- Operating Temperature：-65°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-323
- Voltage - Forward (Vf) (Max) @ If：900 mV @ 10 mA
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Overview
The CMSZDA39V TR PBFREE is a dual unidirectional voltage regulator diode manufactured by Central Semiconductor Corp. It features a nominal Zener voltage of 39 V with a tolerance of ±5%. The device is rated for a total power dissipation of 275 mW and operates within a junction temperature range of -65°C to +150°C. Packaged in a SOT-323 surface-mount case, it contains two internal diodes configured as a common cathode array. The component is RoHS compliant and lead-free, designed for compact circuit protection applications.
Feature Summary
- Dual unidirectional configuration for bidirectional signal line protection
- Compact SOT-323 surface-mount package for space-constrained designs
- High thermal stability with extended junction temperature range
Applications
- ESD protection for high-speed data interfaces
- Voltage clamping in communication circuits
- Transient voltage suppression in portable electronics
Procurement Notes
Verify the specific suffix 'TR PBFREE' against the manufacturer's current datasheet to confirm tape-and-reel packaging and lead-free status. Ensure the ordering code matches the exact electrical specifications required for the design. Cross-reference with authorized distributors to confirm availability and authenticity before procurement.
Selection Notes
Select this component when dual-channel ESD protection is required for differential or paired signal lines. Verify that the 39 V breakdown voltage aligns with the operating voltage of the protected circuit. Confirm that the SOT-323 footprint fits the PCB layout constraints. Check capacitance values if high-speed data integrity is critical.
Part Context
This part belongs to the CMSZDA series of dual Zener diode arrays from Central Semiconductor. These devices are engineered for electrostatic discharge (ESD) protection in consumer and industrial electronics. The series offers various voltage options and packaging types to suit different application requirements while maintaining consistent performance characteristics.
Replacement Considerations
Potential substitutes include other dual Zener arrays in SOT-323 packages with similar 39 V ratings and 275 mW power dissipation. Verify pinout compatibility and electrical parameters such as clamping voltage and capacitance before substitution.
FAQ
What is the internal configuration of the CMSZDA39V?
It consists of two unidirectional Zener diodes connected in a common cathode arrangement.
Is the CMSZDA39V TR PBFREE RoHS compliant?
Yes, the 'PBFREE' suffix indicates that the component is lead-free and RoHS compliant.
What is the maximum power dissipation for this device?
The total power dissipation rating is 275 mW at ambient temperature.
