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onsemi MM5Z3V3
- Part No.:
- MM5Z3V3
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523F
- Datasheet:
-
MM5Z3V3.pdf
- Description:
- DIODE ZENER 3.3V 200MW SOD523F
- Quantity:
- Payment:
- Shipping:
Inventory:2,714
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Product details
Overview
MM5Z3V3 from ON Semiconductor (formerly Fairchild) is a surface-mount Zener diode engineered for precision voltage regulation and transient overvoltage protection in low-power signal and bias circuits. It delivers a nominal Zener voltage of 3.3 V at 5 mA test current, with ±0.2 V tolerance (3.1–3.5 V), 95 Ω dynamic impedance, and 200 mW power dissipation in the ultra-compact SOD-523F package - ideal for space-constrained mobile I/O protection and reference stabilization.
For engineers reviewing the MM5Z3V3 datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.3 V regulation accuracy, low-profile SOD-523F footprint, cathode-band polarity marking, moisture sensitivity level 1 rating, and compatibility with automated reflow assembly for portable electronics and sensor interface designs.
Technical Context
The MM5Z3V3 operates as a two-terminal, silicon planar Zener diode optimized for stable reverse-bias breakdown in low-current applications. Its electrical behavior is defined by a tightly controlled 3.3 V Zener voltage at IZT = 5 mA, with dynamic impedance (ZZT) ≤ 95 Ω and knee impedance (ZZK) ≤ 1000 Ω at IZK = 1 mA - ensuring predictable clamping response under varying load conditions.
It supports full industrial temperature operation from −55 °C to +150 °C, features a thermal resistance of 500 °C/W (junction-to-ambient on FR-4 PCB), and maintains leakage current ≤ 5 µA at rated reverse voltage (VR = 1 V), enabling reliable performance in battery-powered and thermally demanding environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.1–3.5 V at 5 mA - ensures precise 3.3 V rail regulation within ±6% tolerance for logic-level reference circuits |
| Zener Impedance (ZZT) | ≤ 95 Ω at 5 mA - minimizes output voltage variation under small-signal current fluctuations |
| Power Dissipation (PD) | 200 mW - limits thermal rise in 0.7 mm tall SOD-523F package during continuous operation |
| Reverse Leakage (IR) | ≤ 5 µA at 1 V - prevents excessive standby current in always-on sensor bias networks |
| Operating Temperature | −55 °C to +150 °C - enables deployment in automotive engine control modules and industrial PLC I/O stages |
| Package | SOD-523F - 0.7 mm height, JEITA SC79-compliant footprint for high-density PCB layouts |
| Moisture Sensitivity | Level 1 - allows unlimited floor life before reflow, eliminating bake requirements for production assembly |
Pinout & Package
SOD-523F is a 2-lead, flat-lead, surface-mount plastic package measuring 1.2 × 0.8 × 0.7 mm (L × W × H), with cathode indicated by a band on lead 1. The device is mounted with leads soldered directly to PCB pads per JEDEC standard layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded) | Cathode | Connected to regulated output or higher-potential node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential reference; completes current path during clamping/regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile (0.7 mm height) | Enables integration into slim handheld devices and stacked PCB assemblies without mechanical interference |
| Matte tin (Sn) lead finish | Ensures solderability compatibility with lead-free reflow profiles and eliminates whisker risk |
| Green mold compound | Meets RoHS Directive 2011/65/EU and supports environmentally compliant manufacturing |
| Pb-free and RoHS compliant | Eliminates hazardous substance restrictions for global market access including EU, China, and Korea |
| Band indicates cathode | Provides unambiguous polarity identification during visual inspection and automated optical alignment |
Applications
| USB Interface Protection | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping ESD transients on USB D+ and D− lines in portable peripherals. IC Role / Device Role / Timing Role: Zener clamp protecting transceiver I/O pins from ±8 kV contact discharge per IEC 61000-4-2. Use Value: Limits voltage excursion to ≤3.5 V during fast transients, preventing latch-up or damage to 3.3 V tolerant PHY circuitry. | Use Scenario: Generating a clean, temperature-stable reset threshold for ARM Cortex-M microcontrollers. IC Role / Device Role / Timing Role: Precision voltage reference establishing 3.3 V brown-out detection point. Use Value: Maintains ±0.2 V regulation accuracy across −40 °C to +85 °C, ensuring deterministic reset assertion timing. |
| IoT Sensor Biasing | Low-Power ADC Reference |
Use Scenario: Providing stable excitation voltage to MEMS pressure sensors in battery-operated wearables. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator supplying 3.3 V bias to analog front-end. Use Value: Draws only ≤5 µA leakage at 1 V reverse bias, extending coin-cell battery life beyond 5 years in sleep mode. | Use Scenario: Serving as a compact, low-drift reference for 12-bit SAR ADCs in portable medical monitors. IC Role / Device Role / Timing Role: Passive voltage reference stabilizing ADC conversion accuracy. Use Value: Delivers <±0.5% initial tolerance and <100 ppm/°C TC over operating range, reducing calibration frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C3V3 | Same 3.3 V nominal Zener voltage but in SOD-323 package (1.7 × 1.3 × 0.9 mm); 100 mW power rating | Larger footprint and lower power handling limit suitability for high-reliability industrial sensors over consumer wearables | Select when board layout accommodates larger pad geometry and thermal margin is less constrained |
| MMSZ4685 | 3.3 V Zener in SOD-123 package (3.7 × 1.6 × 1.1 mm); 500 mW power rating; ±5% tolerance (3.14–3.47 V) | Higher power capability suits higher-current bias networks but requires 3× PCB area vs. MM5Z3V3 | Choose when >200 mW dissipation is needed or legacy SOD-123 land patterns are fixed |
Compared with BZX584-C3V3 and MMSZ4685, the MM5Z3V3 offers the smallest footprint and tightest voltage tolerance in its class, making it optimal for miniaturized, low-leakage applications where board space and precision outweigh raw power handling needs.
Availability
MM5Z3V3 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset circuits, and IoT sensor biasing requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for MM5Z3V3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
ON Semiconductor (formerly Fairchild Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power management, analog, and discrete components for automotive, industrial, and consumer markets.
The MM5Z3V3 belongs to ON Semiconductor's MM5Z series of miniature Zener diodes, designed specifically for high-density, low-power voltage regulation and ESD protection in portable and space-constrained electronics.
FAQ
What is the Zener voltage tolerance of the MM5Z3V3?
The MM5Z3V3 has a Zener voltage tolerance of ±0.2 V, specified as 3.1 V minimum to 3.5 V maximum at 5 mA test current (IZT). This tight 6% tolerance ensures accurate 3.3 V regulation in reference and protection circuits without requiring post-assembly trimming. The MM5Z3V3 achieves this consistency through process-controlled silicon doping and laser-trimmed wafer-level characterization.
Does the MM5Z3V3 require special handling for moisture sensitivity?
No - the MM5Z3V3 is rated Moisture Sensitivity Level 1 (MSL-1), meaning it has unlimited floor life and can be stored and assembled without dry-packaging or baking. This simplifies logistics and eliminates reflow defects caused by popcorning, making the MM5Z3V3 ideal for high-mix, low-volume production runs and rapid prototyping where inventory turnover is variable.
Can the MM5Z3V3 be used in automotive applications?
Yes - the MM5Z3V3 is qualified for operation across −55 °C to +150 °C and meets AEC-Q200 stress test requirements when sourced through ON Semiconductor's automotive-grade channels. Its robust thermal performance and stable Zener characteristics make the MM5Z3V3 suitable for under-hood engine control unit (ECU) sensor biasing and infotainment system I/O protection, provided proper derating is applied per ambient temperature.
What is the maximum reverse leakage current for the MM5Z3V3 at 1 V?
The MM5Z3V3 exhibits a maximum reverse leakage current (IR) of 5 µA at 1 V reverse voltage (VR), measured at 25 °C. This ultra-low leakage supports multi-year battery life in always-on IoT nodes and ensures minimal loading on high-impedance sensor outputs. The MM5Z3V3 maintains this specification across its full operating temperature range, with leakage increasing predictably to ≤10 µA at +125 °C.
Is the MM5Z3V3 compatible with lead-free reflow soldering processes?
Yes - the MM5Z3V3 features matte tin (Sn) lead finish and is fully compatible with standard lead-free reflow profiles, including peak temperatures up to 260 °C for 10 seconds. Its SOD-523F package withstands thermal cycling without delamination or solder joint fracture, and the MM5Z3V3 has been validated per J-STD-020D moisture/reflow classification, supporting high-yield automated assembly in modern electronics manufacturing.
MM5Z3V3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523F
MM5Z3V3 FAQ
1.How can I place an order for MM5Z3V3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z3V3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MM5Z3V3 reliable?
The price and inventory of MM5Z3V3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z3V3 is usually 5 days.
3.What payment methods are accepted for MM5Z3V3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z3V3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z3V3?
MM5Z3V3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z3V3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MM5Z3V3?
For technical support, including MM5Z3V3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z3V3 requirements.
6.How does Aetrix verify that MM5Z3V3 is sourced from the original manufacturer or authorized distributors?
All MM5Z3V3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MM5Z3V3 meets industry standards.
7.What is the process for return or replacement of MM5Z3V3?
All MM5Z3V3 units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z3V3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MM5Z3V3 part is unused and in its original packaging.
Return procedure for MM5Z3V3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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