MMBZ5250BS-7-F

Overview

The MMBZ5250BS-7-F is a dual isolated Zener diode manufactured by Diodes Incorporated, housed in an SOT-363 surface-mount package. It provides two independent Zener channels with a nominal breakdown voltage of 20V and a tolerance range of 19.00V to 21.00V. The device dissipates up to 200mW of power at 25°C ambient temperature, with a maximum reverse leakage current of 100nA at 15V. Electrical characteristics include a test current of 6.2mA and a maximum Zener impedance of 25Ω at the test current. The component operates within a temperature range of -65°C to +150°C.

Feature Summary

• Dual isolated Zener diodes integrated into a single ultra-small surface mount package
• Planar die construction designed for automated assembly processes
• Lead-free plating with matte tin finish annealed over Alloy 42 leadframe

Applications

• Voltage reference circuits requiring dual independent references
• Clamping applications for signal protection
• Biasing networks in compact electronic designs

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. Confirm that the component meets RoHS compliance requirements for the intended manufacturing process. Ensure the supplier provides traceability data consistent with Diodes Incorporated standards. Check for any date code restrictions related to green molding compound usage if halogen-free status is required.

Selection Notes

Select this component when space constraints require dual Zener functions in a single footprint. Compare the 200mW power dissipation limit against circuit requirements to ensure adequate thermal headroom. Verify that the 25Ω impedance specification meets the noise and regulation needs of the application. Consider the SOT-363 pad layout dimensions during PCB design to ensure proper solder joint reliability.

Part Context

This part belongs to the MMBZ5221BS through MMBZ5259BS series from Diodes Incorporated. These devices share the same SOT-363 mechanical outline and general electrical testing conditions but vary in nominal Zener voltage and corresponding test currents. The series is designed for high-density surface mount applications where multiple voltage references are needed.

Replacement Considerations

Substitute parts must match the SOT-363 package dimensions and pinout configuration. Verify that alternative dual Zener diodes offer equivalent or lower Zener impedance and comparable power dissipation ratings. Ensure the replacement maintains the same isolation between the two internal channels.