1N5257B TR PBFREE

Single Zener Diodes Overview

The Central Semiconductor Corp 1N5257B TR PBFREE is a silicon Zener diode with a nominal voltage of 33 V and a tolerance of ±5%. It features a maximum power dissipation of 500 mW at 75°C ambient temperature. The device operates within a junction temperature range of -65°C to +200°C. Electrical characteristics include a maximum Zener impedance of 58 Ω, a reverse current of 0.1 mA at 25 V, and a positive temperature coefficient of +0.092 %/°C.

Single Zener Diodes Feature Summary

• Provides highly reliable voltage regulation for industrial, commercial, entertainment, and computer applications.
• Features a DO-35 axial through-hole package suitable for standard mounting configurations.
• Includes a 'PBFREE' suffix indicating lead-free plating options compliant with environmental regulations.

Single Zener Diodes Applications

• Industrial equipment voltage regulation
• Commercial electronic circuit protection
• Entertainment system power management
• Computer hardware voltage stabilization

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix required for your application. The 'TR' designation indicates tape and reel packaging, while 'BK' denotes bulk packaging. Confirm whether lead-free ('PBFREE') or tin/lead plating is necessary by appending the appropriate suffix during procurement. Ensure compatibility with existing inventory standards before finalizing orders.

Single Zener Diodes Selection Notes

Select this component when a precise 33 V reference is needed in a low-power environment. The ±5% tolerance offers standard precision for general-purpose circuits. Consider the thermal limits carefully, as the 500 mW rating applies at 75°C; derating is required for higher ambient temperatures. Verify that the DO-35 package fits the available board space.

Single Zener Diodes Part Context

This part belongs to the 1N5221B through 1N5278B series of silicon Zener diodes manufactured by Central Semiconductor Corp. The series covers a wide voltage range from 2.4 V to 170 V, all housed in the DO-35 case. These devices are designed for high reliability in various electronic sectors requiring stable voltage references.

Single Zener Diodes Replacement Considerations

No direct replacement part numbers are listed in the official documentation for this specific model. High-voltage 500mW Zener diodes in the DO-35 package have been transitioned to End of Life status by the manufacturer. Contact [email protected] for assistance locating alternate sources if replacements are unavailable.

Single Zener Diodes FAQ

What is the marking code for the 1N5257B?

The marking code for the 1N5257B is C5257B.

Does the 1N5257B have a negative or positive temperature coefficient?

The 1N5257B has a positive temperature coefficient of +0.092 %/°C.