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1N4623 BK TIN/LEAD
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Product Detailed Parameters
- Description：4.3V 250MW TH DIODE-ZENER SINGLE
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Box
- Voltage - Zener (Nom) (Vz)：4.3 V
- Tolerance：±5%
- Power - Max：250 mW
- Impedance (Max) (Zzt)：1600 Ohms
- Current - Reverse Leakage @ Vr：4 µA @ 2 V
- Operating Temperature：-65°C ~ 200°C (TJ)
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Voltage - Forward (Vf) (Max) @ If：1 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 1N4623 BK TIN/LEAD is a silicon unidirectional Zener diode housed in the DO-35 axial through-hole package. It features a nominal Zener voltage of 4.3 V with a ±5% tolerance and a maximum power dissipation of 0.25 W. The device exhibits low noise characteristics suitable for low-level applications, with a maximum Zener impedance of 1600 Ohms and a reverse leakage current of 4 µA at 2 V. It operates within a junction temperature range up to 175°C.
Feature Summary
- Low noise performance optimized for sensitive signal processing
- Unidirectional configuration for precise voltage regulation
- Robust DO-35 glass encapsulation for environmental protection
Applications
- Precision voltage reference circuits
- Low-noise signal conditioning stages
- Overvoltage protection in sensitive analog systems
Procurement Notes
Verify lead content compliance as this variant uses tin/lead terminations. Confirm RoHS status against project requirements since standard versions may differ. Check datasheet for specific test currents and impedance values relevant to your circuit design. Ensure DO-35 footprint compatibility during PCB layout. Validate supplier authenticity for Central Semiconductor components.
Selection Notes
Select this component when low noise is critical for Zener regulation. Compare impedance specifications against other 4.3V options if tight voltage stability is required. Consider thermal management for the 0.25W dissipation limit. Verify package dimensions match existing board space constraints.
Part Context
This part belongs to the 1N4623 series of low-power Zener diodes manufactured by Central Semiconductor. It shares the electrical profile of the standard 1N4623 but specifies tin/lead plating for terminations. The BK suffix typically denotes bulk packaging. It serves as a specialized alternative to lead-free variants in legacy or non-RoHS constrained designs.
Replacement Considerations
Direct substitutes include the 1N4623-1E3 from Microchip Technology. Parameter-equivalent alternatives are available from other manufacturers offering similar 4.3V Zener characteristics in DO-35 packages.
