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1N4749A TR TIN/LEAD
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Product Detailed Parameters
- Description：24V 1W TH DIODE-ZENER SINGLE: ST
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Tape & Reel (TR)
- Voltage - Zener (Nom) (Vz)：24 V
- Tolerance：±5%
- Power - Max：1 W
- Impedance (Max) (Zzt)：25 Ohms
- Current - Reverse Leakage @ Vr：5 µA @ 18.2 V
- Operating Temperature：-65°C ~ 200°C (TJ)
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 1N4749A TR TIN/LEAD is a single silicon Zener voltage regulator diode designed for through-hole mounting in the DO-41 axial package. It provides a nominal Zener voltage of 24 V with a power dissipation rating of 1 W and a voltage tolerance of ±5%. The device operates within a junction temperature range of -65°C to +200°C, featuring a maximum reverse leakage current of 5 µA at 18.2 V and a Zener impedance of 25 Ohms.
Feature Summary
- Provides stable voltage regulation via Zener breakdown characteristics
- Utilizes glass passivation for enhanced environmental durability
- Supports high thermal stability across an extended operating temperature range
Applications
- General-purpose voltage reference circuits
- Overvoltage protection stages
- Power supply regulation modules
Procurement Notes
Verify that the specific ordering suffix matches the required lead-free or tin/lead plating specification, as this affects RoHS compliance status. Confirm the package type is DO-41 and the power rating is 1 W. Ensure the manufacturer is identified as Central Semiconductor Corp to guarantee component authenticity and datasheet alignment.
Selection Notes
Select this component when a 24 V regulation point is required with a 1 W power handling capability. The DO-41 through-hole package facilitates manual assembly and prototyping. Verify that the ±5% tolerance meets the circuit requirements and that the 25 Ohm impedance is acceptable for the application's noise sensitivity.
Part Context
This part belongs to the 1N47xx series of general-purpose Zener diodes manufactured by Central Semiconductor. These components are widely used in discrete semiconductor applications requiring reliable voltage clamping. The series offers various voltage ratings within the same standardized axial package form factor.
Replacement Considerations
Cross-reference with Vishay 1N4749A or onsemi 1N4749A for pin-compatible alternatives. Ensure substitute parts maintain the 24 V nominal voltage, 1 W power rating, and DO-41 package dimensions.
