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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 18V SOT-323
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：18 V
- Tolerance：±6.39%
- Power - Max：275 mW
- Impedance (Max) (Zzt)：45 Ohms
- Current - Reverse Leakage @ Vr：50 nA @ 12.6 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 CMSZDA18V TR PBFREE is a dual common anode Zener diode manufactured by Central Semiconductor Corp. It features a silicon construction housed in a compact SOT-323 (SC-70) surface-mount package. The device provides a nominal Zener voltage of 18V with a 5% tolerance and a total power dissipation of 0.35W. Designed for general-purpose voltage regulation and protection, it operates within a junction temperature range of -65°C to +150°C. The component is supplied in tape and reel packaging and complies with RoHS standards.
Feature Summary
- Dual common anode configuration for space-efficient circuit design
- Compact SOT-323 surface-mount package suitable for automated assembly
- High thermal stability with extended operating temperature range
Applications
- Voltage reference circuits requiring dual regulated rails
- Clamping applications in low-power signal processing
- General-purpose discrete semiconductor protection
Procurement Notes
Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and availability status. Ensure that the procurement documentation explicitly references the Central Semiconductor part number CMSZDA18V TR PBFREE to avoid confusion with similar variants or obsolete listings. Cross-reference the supplier's certificate of conformity with the latest environmental compliance declarations.
Selection Notes
Select this component when a dual Zener structure with a common anode is required in a minimal footprint. The 0.35W power rating and 18V breakdown voltage define its operational limits. Consider the SOT-323 package dimensions for PCB layout constraints. Verify that the application current does not exceed the device's maximum power dissipation capabilities at the expected ambient temperature.
Part Context
This part belongs to Central Semiconductor's series of small-signal Zener diodes designed for surface-mount technology. The 'TR' designation indicates tape and reel packaging for high-volume manufacturing. The 'PBFREE' suffix confirms lead-free composition. This specific dual-diode variant integrates two independent Zener elements sharing a single anode terminal within one encapsulation.
FAQ
What is the internal configuration of the CMSZDA18V?
It contains two Zener diodes connected in a common anode configuration.
What is the maximum power dissipation for this device?
The total power dissipation is rated at 0.35W.
Which package style is used for this component?
It utilizes the SOT-323 (also known as SC-70) surface-mount package.
