The MM3Z15VT1G is a precision voltage regulation semiconductor device manufactured by AMI Semiconductor/onsemi, designed as a single Zener diode within the discrete semiconductor category. This surface-mount component addresses critical design challenges in electronic circuits requiring stable voltage reference and overvoltage protection, particularly where space constraints and thermal management are paramount concerns.
This Zener diode delivers reliable 15V nominal voltage regulation with ±5% tolerance, making it ideal for applications demanding consistent voltage references. The device operates within an extended temperature range of -65°C to 150°C, ensuring robust performance across harsh environmental conditions. With a maximum power dissipation of 300mW and maximum impedance of 30 Ohms at the Zener voltage, it provides efficient voltage regulation while maintaining low power consumption.
The component features a compact SOD-323 (SC-76) package design, measuring just 2.5mm x 1.2mm, which addresses modern PCB real estate limitations while facilitating automated assembly processes. The surface-mount configuration eliminates the need for through-hole drilling, reducing manufacturing costs and improving production efficiency. Forward voltage characteristics show 900mV maximum at 10mA forward current, while reverse leakage current remains minimal at 50nA at 10.5V, ensuring excellent switching performance and low standby power consumption.
Primary advantages include exceptional temperature stability, precise voltage regulation, compact form factor, and RoHS3 compliance for environmental safety. The device's wide operating temperature range makes it suitable for automotive, industrial, and aerospace applications where temperature extremes are common. The tape and reel packaging format supports high-volume automated manufacturing processes, reducing assembly time and costs.
Compatibility extends across various circuit topologies including voltage regulators, reference circuits, surge protection networks, and voltage clamping applications. The device integrates seamlessly with microcontrollers, analog circuits, power management systems, and communication interfaces requiring stable voltage references.
Application areas encompass power supply regulation, voltage reference circuits, surge protection systems, automotive electronics, industrial control systems, telecommunications equipment, consumer electronics, and battery management systems. The component proves particularly valuable in portable devices, automotive ECUs, industrial sensors, and communication infrastructure where reliable voltage regulation is critical.
Equivalent models include the 1N4744A (1W through-hole version), BZX84C15 (SOT-23 package alternative), MMSZ5245B (SOD-123 variant), 1SMB5945B (SMB package higher power version), BZV55C15 (SOD-80 miniature package), SMAJ15A (SMA package transient voltage suppressor), and MM5Z15V (SOD-523 ultra-miniature version). Cross-compatible alternatives from other manufacturers include Vishay's BZX384C15, Nexperia's BZX384-C15, Rohm's RZ015M150, Diodes Incorporated's MMSZ5245B-7-F, and Fairchild's MM3Z15VT1. These alternatives offer similar electrical characteristics with variations in package size, power rating, and thermal performance to accommodate different design requirements and cost considerations.
MM3Z15VT1G Key Technical Attributes
- Manufacturer part number MM3Z15VT1G from AMI Semiconductor onsemi
- Main category Discrete Semiconductor and small classification Diodes Zener Single
- Zener voltage nominal 15 V with ±5% tolerance for regulated clamping and reference
- Maximum power dissipation 300 mW in SOD-323 package under standard test conditions
- Dynamic impedance Zzt 30 Ω indicating regulation stiffness around the operating point
- Reverse leakage current 50 nA at 10.5 V for low standby loss in high impedance nodes
- Forward voltage 0.9 V at 10 mA typical for small-signal conduction when forward biased
- Operating temperature range −65 °C to +150 °C suitable for harsh environments
- Mounting type Surface Mount in SOD-323 SC-76 footprint
- Compliance RoHS3 Compliant with Pb-free green construction
- Base product family MM3Z15 indicating family compatibility and variant mapping
- Available packaging Tape and Reel TR suitable for automated SMT assembly
MM3Z15VT1G Packing Size
- Package type SOD-323 also known as SC-76 ultra-compact plastic mold for two-leaded diodes
- Material epoxy molded body with plated copper terminations and matte tin Pb-free finish typical of onsemi SOD-323 devices
- Size ultra-small low-profile outline per JEITA SC-76 standard optimized for dense PCBs and portable designs note exact dimensions and land pattern should be taken from the datasheet mechanical drawings
- Pin configuration two terminals with polarity anode and cathode cathode end identified by package polarity band
- Orientation and marking laser or ink polarity band supports reliable automated optical inspection
- Tape and reel TR format embossed carrier tape per EIA-481 suitable for pick-and-place with standard 8 mm tape width and common reel diameters consult datasheet for pocket pitch and reel count
- Thermal characteristics package supports up to 300 mW with derating dependent on PCB copper area airflow and ambient temperature junction to ambient thermal resistance varies by layout consult datasheet application notes for RθJA guidance and power derating curves
- Electrical properties at package level low parasitic inductance and capacitance compared with larger packages enabling fast clamping response and stable regulation in high-speed circuits
MM3Z15VT1G Application
- Voltage reference and biasing in compact analog front-ends sensors and instrumentation
- Over-voltage protection and clamping for GPIO lines communication interfaces and low-power rails nominal 15 V clamp
- Level shifting and transient suppression in portable consumer electronics wearables and IoT nodes where SOD-323 footprint minimizes area
- Secondary regulation and feedback networks in DC-DC converters LDO reference clamps and op-amp input protection
- General-purpose Zener duties in test equipment industrial control lighting drivers and automotive-adjacent designs when automotive qualification is not required
MM3Z15VT1G Features
- 15 V nominal Zener regulation with ±5% tolerance balancing precision and cost for mainstream protection and reference tasks
- Low reverse leakage 50 nA at 10.5 V minimizes quiescent current and preserves accuracy in high impedance circuits
- Dynamic impedance 30 Ω provides solid load regulation within the intended operating current range
- Small SOD-323 SC-76 package conserves PCB area and enables high component density with short current loops that improve transient performance
- Wide operating temperature range −65 °C to +150 °C supports extreme ambient environments and extended lifetime
- Surface-mount form factor compatible with automated assembly processes reflow soldering and AOI
- Forward conduction characteristic 0.9 V at 10 mA enables predictable conduction when reverse clamp mode is not used
- RoHS3 compliant Pb-free green construction aligns with global environmental directives and modern manufacturing requirements
- Multiple synonymous package descriptors SOD-323 SC-76 and Supplier Device Package SOD-323 ease cross-referencing across CAD libraries and sourcing databases
- Family continuity Base Product Number MM3Z15 offers design flexibility to shift within the same MM3Z series for adjacent voltages while retaining the footprint
- High availability with production-grade Tape and Reel packaging that protects parts from ESD and mechanical stress during logistics and placement
MM3Z15VT1G Quality and Safety Features
- RoHS3 compliant Pb-free materials and halogen-free construction typical for the onsemi VT1G green suffix supporting sustainable compliance
- Broad junction temperature capability up to 150 °C helps maintain margin against thermal overstress
- Moisture sensitivity appropriate for small-mold SMT diodes typically MSL 1 for SOD-323 always verify the exact MSL and floor life in the datasheet and label prior to reflow
- Polarity band marking reduces assembly errors and supports end-of-line inspection for correct orientation
- Tape and reel packaging with antistatic properties supports safe ESD handling within standard component handling procedures
- Full traceability and lot control when sourced through authorized channels enhance quality audits and failure analysis workflows
MM3Z15VT1G Compatibility
- Footprint level compatibility with 2-pin SOD-323 SC-76 Zener diodes sharing the same land pattern and polarity orientation cathode-banded end verify pad sizes and solder mask with the datasheet land pattern
- Electrical compatibility with 15 V nominal Zener diodes of similar tolerance dynamic impedance power rating and leakage for drop-in replacements confirm test current and operating current range to match regulation behavior
- System-level compatibility in circuits designed for 300 mW Zener clamps reference biasing and small-signal protection ensure power dissipation margins are preserved under worst-case fault conditions and derating
- Cross-family alignment within the onsemi MM3Z series simplifies migration to nearby voltages while retaining BOM and PCB layout with minimal changes
MM3Z15VT1G Datasheet PDF
- The most authoritative and up-to-date datasheet for MM3Z15VT1G is available on our website We strongly recommend downloading the datasheet from this product page to obtain exact electrical characteristics mechanical dimensions land patterns thermal derating curves MSL handling and tape and reel specifications
Quality Distributor
- IC-Components is a premium distributor for AMI Semiconductor onsemi products offering genuine parts competitive pricing and professional support Get an instant quote and secure supply for MM3Z15VT1G by requesting a quotation directly on our website today
