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Product Detailed Parameters
- Description：5.1V 1W SMA
- Series：-
- Mfr：Shenzhen Slkormicro Semicon Co., Ltd.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Configuration：-
- Voltage - Zener (Nom) (Vz)：-
- Tolerance：-
- Power - Max：-
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：-
- pa_package-case：
- Supplier Device Package：-
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The 1SMA4733A is a surface mount silicon Zener diode manufactured by Shenzhen SLKORMicro Semicon Co., Ltd. It features a SMA (DO-214AC) plastic package designed for automated mounting processes. The device provides a nominal Zener voltage of 5.1V with a standard tolerance of ±5%. It supports a maximum power dissipation of 1W at an ambient temperature of 75°C and exhibits low leakage current characteristics, typically specified as 10µA at 1V reverse bias. The component utilizes a glass-passivated junction to ensure high reliability and stability in various electronic circuits.
Feature Summary
- Surface mount design compatible with SMA (DO-214AC) packages for efficient PCB integration
- Glass-passivated junction structure ensuring high reliability and environmental stability
- Capable of handling peak reverse power dissipation suitable for surge protection applications
Applications
- Surge protection circuits in consumer electronics
- Voltage regulation in power supply units
- Over-voltage protection for sensitive semiconductor components
Procurement Notes
Verify the manufacturer designation on the component marking to confirm origin from Shenzhen SLKORMicro Semicon Co., Ltd. Ensure the part number suffix matches the specific voltage rating and tolerance requirements. Cross-reference datasheets from authorized distributors to validate electrical parameters against official specifications before procurement.
Selection Notes
Select this component when a 5.1V reference or clamp is required in a surface mount assembly. The 1W power rating allows for higher energy absorption compared to lower-power variants. Verify that the SMA footprint aligns with the board layout constraints and that the operating temperature range meets the application's thermal requirements.
Part Context
The 1SMA4733A belongs to the broader family of SMA-series Zener diodes, which are standardized surface mount devices used for voltage clamping and regulation. This specific model represents the 5.1V variant within the series, sharing mechanical dimensions and general performance characteristics with other voltages in the same package type.
Replacement Considerations
Compatible substitutes include 1N4733A (through-hole equivalent) or other manufacturers' 1SMA4733A parts such as those from Pan Jit or Continental Device India, provided they meet the SMA package and 5.1V/1W specifications.
