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ONSEMI MMBZ5243BLT1G Surface Mount Zener Diode

The MMBZ5243BLT1G series surface mount Zener diode provides reliable voltage regulation in a compact package, ideal for high-density PCBs, cellular phones, and portable electronics. With a power rating of 225mW on FR-4 or FR-5 substrates, it features a wide Zener voltage range from 2.4V to 91V, and excellent ESD immunity of over 16kV. The diode is RoHS compliant, halogen free, BFR free, and AEC-Q101 qualified, ensuring environmental safety and high reliability for automotive and industrial applications.

Authorized Distributors
Source:Newark
Part No:MMBZ5243BLT1G
Stock:875
Inv Date:06-10-2026
Price: Unit price: $0.175
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Source:DigiKey
Part No:MMBZ5243BLT1G
Stock:27270
Inv Date:06-11-2026
Price: Unit price: $0.17
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Part No:MMBZ5243BLT1G
Stock:13846
Inv Date:06-11-2026
Price: Unit price: $0.17
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Part No:MMBZ5243BLT1G
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.07
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Part No:MMBZ5243BLT1G
Stock:195000
Inv Date:06-11-2026
Price: Unit price: $0.0232
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Part No:MMBZ5243BLT1G
Stock:195000
Inv Date:06-11-2026
Price: Unit price: $0.0232
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Part No:MMBZ5243BLT1G
Stock:108000
Inv Date:06-10-2026
Price: Unit price: $0.0233
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Source:Arrow EU
Part No:MMBZ5243BLT1G
Stock:6000
Inv Date:06-11-2026
Price: N/A
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Part No:MMBZ5243BLT1G
Stock:132000
Inv Date:06-11-2026
Price: N/A
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ONSEMI MMBZ5243BLT1G Surface Mount Zener Diode Specifications:

  • Power Dissipation: 225 mW on FR-4 or FR-5 substrate
  • Zener Voltage Range: 2.4 V to 91 V
  • Package Type: SOT-23 surface mount
  • Maximum Case Temperature for Soldering: 260°C for 10 seconds
  • Polarity: Cathode marked by polarity band
  • ESD Rating: Class 3 (>16 kV) per Human Body Model
  • Material: Plastic transfer-molded case with corrosion-resistant finish
  • Operating Temperature Range: -65°C to +150°C
  • RoHS, Halogen Free, BFR Free, Pb-Free, AEC-Q101 qualified
  • Maximum Power Dissipation on FR-5 Board: 225 mW at 25°C, Derated 1.8 mW/°C above 25°C

Buy the Buy ON Semiconductor MMBZ5243BLT1G Part Number MMBZ5243BLT1G Online

Shop online for the high-quality ON Semiconductor Surface Mount Zener Diode MMBZ5243BLT1G. This compact, robust diode offers a power rating of 225mW, a wide voltage range from 2.4V to 91V, and excellent ESD protection. Suitable for high-density PCB applications, consumer electronics, and automotive systems, it is RoHS compliant, halogen free, and AEC-Q101 qualified. Reliable and environmentally friendly, this diode ensures precise voltage regulation for your electronic projects—order now and enjoy fast delivery and superior performance.

Get ON Semiconductor MMBZ5243BLT1G today—designed for precise voltage regulation and long-lasting durability.

Frequently Asked Questions

Where can I buy ONSEMI MMBZ5243BLT1G?

You can click on the BUY or RFQ button to purchase MMBZ5243BLT1G from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part MMBZ5243BLT1G?

You can download the MMBZ5243BLT1G datasheet or visit the ONSEMI website for support.

Who is the manufacturer of MMBZ5243BLT1G?

ONSEMI

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