The MM3Z22VT1G from onsemi (formerly AMI Semiconductor) is a surface mount Zener diode designed for voltage regulation and circuit protection applications in space-constrained electronic designs. This discrete semiconductor component belongs to the single Zener diode category and addresses the critical design challenge of providing reliable voltage reference and overvoltage protection in compact form factors where board space is at a premium.
This device features a nominal Zener voltage of 22V with ±5% tolerance, making it suitable for precise voltage regulation tasks in various electronic circuits. The component offers 300mW maximum power dissipation capability while maintaining excellent electrical characteristics, including a maximum forward voltage of 900mV at 10mA forward current and exceptionally low reverse leakage current of just 50nA at 15.4V, which ensures minimal power loss during operation. The maximum impedance specification of 55 Ohms at the Zener knee provides stable voltage regulation performance across varying load conditions.
Housed in the industry-standard SOD-323 (SC-76) package, this ultra-compact surface mount device enables high-density PCB layouts and automated assembly processes. The component operates reliably across an extended temperature range from -65°C to 150°C, making it suitable for both commercial and industrial applications including automotive electronics, power supplies, battery management systems, signal conditioning circuits, and portable devices. The device is fully RoHS3 compliant, meeting current environmental regulations, and comes supplied in tape and reel packaging with 41,100 units available for high-volume manufacturing requirements.
Equivalent and alternative models include the BZX384-C22 from Nexperia, MMSZ5250B from various manufacturers, 1SMB5250B for higher power applications, and the TZMC22 series from other semiconductor vendors, all offering similar 22V Zener voltage ratings with comparable electrical characteristics in SOD-323 or related small-signal packages.
MM3Z22VT1G Key Technical Attributes
SOD-323 package
22V Zener voltage
300mW power rating
MM3Z22VT1G Packing Size
The device is supplied in a compact SOD-323 form factor, also referred to as SC-76, optimized for surface mount technology. Its tape & reel packaging ensures ease of integration into high-volume automated assembly. The SOD-323 package is recognized for its minimal footprint and low profile, making it highly suitable for dense circuit layouts. Thermal dissipation is rated for a maximum of 300 milliwatts, and pin configuration follows standard SOD-323 mapping, supporting reliable electrical connection and consistent heat transfer. The electrical properties include a maximum forward voltage of 900mV at 10mA, reverse leakage current of 50nA at 15.4V, and a nominal Zener voltage of 22V with a ±5% tolerance.
MM3Z22VT1G Application
This MM3Z22VT1G Zener diode is widely used for voltage reference and regulation in power management circuits, protection of sensitive components against transient voltage surges, and clamping applications in communication and industrial equipment. Its robust operating temperature range from -65°C to 150°C makes it ideal for engineering solutions in consumer electronics, industrial automation, and automotive control units where reliability is essential.
MM3Z22VT1G Features
The MM3Z22VT1G showcases key features such as high thermal stability, RoHS3 compliance ensuring eco-friendly assembly, and enhanced performance under stringent environmental conditions. It delivers precise voltage regulation with its 22V Zener voltage, backed by a maximum impedance of 55 Ohms, which ensures consistent clamping accuracy. The very low reverse leakage current guarantees minimal power loss, and the surface mount SOD-323 package supports automated high-speed manufacturing. Design flexibility is further supported by a ±5% voltage tolerance, making it compatible with systems requiring reliable and repeatable voltage benchmarks. It also exhibits robust ESD protection characteristics inherent to quality Zener diodes, safeguarding downstream electronics efficiently.
MM3Z22VT1G Quality and Safety Features
The MM3Z22VT1G is manufactured to meet strict RoHS3 environmental standards, underscoring safety, sustainability, and regulatory compliance. It is engineered to operate consistently across a wide temperature spectrum and withstand voltage stresses typical of modern electronic circuits. The part’s electrical and mechanical integrity is assured by AMI Semiconductor/onsemi’s rigorous quality controls including thermal resistance optimization and standardized testing protocols.
MM3Z22VT1G Compatibility
This part provides broad compatibility as a single 22V Zener diode and serves as a direct-fit component for designs specifying SOD-323 packages. It is a reliable choice for upgrading, replacing, or newly specifying precision voltage reference diodes in discrete semiconductor circuits, making it suitable for manufacturers and repair technicians seeking cross-brand comparability.
MM3Z22VT1G Datasheet PDF
For complete technical analysis and design integration support, our website provides the most detailed and authoritative datasheet for the MM3Z22VT1G product model. We strongly encourage customers to download the latest version directly from this page to ensure access to guaranteed current specifications, electrical performance graphs, and recommended application notes.
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