MMSZ5249B-G3-18

Single Zener Diodes Overview

The MMSZ5249B-G3-18 is a silicon planar Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It provides a nominal Zener voltage of 19 V with a standard tolerance of ±5%. The device operates at a test current of 6.6 mA and dissipates up to 500 mW of power. It features a maximum dynamic resistance of 23 Ohms and a reverse leakage current of 0.1 µA at 14 V. Packaged in an SOD-123 surface-mount housing, it supports an operating temperature range from -55°C to +150°C.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Provides standard ±5% Zener voltage tolerance
• Features ESD capability exceeding 8 kV via human body model

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clipping and clamping applications

Single Zener Diodes Procurement Notes

Verify the specific ordering code suffix against official documentation to confirm packaging quantity and reel specifications. Ensure compliance with RoHS3 requirements and material categorization standards before procurement. Confirm that the component meets the required thermal equilibrium conditions for the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a 19 V Zener voltage with ±5% tolerance is required in a compact SOD-123 package. Consider the 500 mW power dissipation limit and the 23 Ohm dynamic resistance for circuit design. Verify compatibility with the specified operating temperature range of -55°C to +150°C.

Single Zener Diodes Part Context

This part belongs to the MMSZ5225-G to MMSZ5267-G series of small signal Zener diodes. The series covers a wide Zener voltage range from 3.0 V to 75 V. The 'B' suffix indicates the ±5% tolerance variant, while the '-G3' denotes RoHS compliance. The '-18' suffix specifies the taped unit configuration on a 13-inch reel.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same Vishay series include other MMSZ52xxB-G3-18 variants with different Zener voltages. Cross-manufacturer equivalents must match the 19 V nominal voltage, 500 mW power rating, and SOD-123 package dimensions.