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onsemi MM5Z3V3T5G
- Part No.:
- MM5Z3V3T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z3V3T5G.pdf
- Description:
- DIODE ZENER 3.3V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:15,980
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Product details
Overview
MM5Z3V3T5G from onsemi is a 3.3 V, ±5% tolerance Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 95 Ω maximum Zener impedance at 5 mA test current and 5 µA reverse leakage at 1 V. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM5Z3V3T5G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), and real-world use cases in low-voltage rail clamping and reference generation.
Technical Context
This device operates as a two-terminal voltage reference diode with sharp reverse breakdown at nominal 3.3 V. Its Zener voltage exhibits a temperature coefficient of −3.5 mV/°C, enabling predictable drift compensation in ambient-variant circuits. The SOD-523 package supports high-density PCB layouts with minimal footprint (1.20 mm × 0.80 mm) and low profile (0.7 mm height).
It delivers stable regulation under pulsed or DC reverse bias up to 500 mW, with thermal resistance of 250 °C/W (junction-to-ambient on FR-4). Reverse leakage remains ≤5 µA at VR = 1 V, ensuring low quiescent current draw in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.1 V to 3.5 V at IZT = 5 mA - defines tight regulation window for 3.3 V rail stabilization |
| Power Rating (PD) | 500 mW at TA = 25 °C - sets maximum continuous dissipation before thermal derating begins |
| Zener Impedance (ZZT) | 95 Ω max at IZT = 5 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | ≤5 µA at VR = 1 V - ensures minimal standby current in always-on monitoring circuits |
| ESD Rating | Class 3 (>16 kV HBM) - enables direct integration into handheld interfaces without external protection |
| Package | SOD-523 (Case 502) - 1.20 mm × 0.80 mm × 0.70 mm footprint ideal for ultra-thin mobile PCBs |
| Temperature Coefficient | −3.5 mV/°C - allows accurate prediction of VZ shift across −65 °C to +150 °C operating range |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; body dimensions: 1.20 mm × 0.80 mm × 0.70 mm; mounting position unrestricted; qualified for 260 °C reflow per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal during Zener operation |
| 2 (Unbanded End) | Anode | Connected to circuit ground or lower-potential reference; forward voltage ≤0.9 V at 10 mA |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free & RoHS Compliant | 100% matte tin lead finish meets environmental compliance for global consumer electronics |
| High ESD Robustness | Class 3 Human Body Model (>16 kV) eliminates need for discrete ESD protection in I/O lines |
| Low Profile Packaging | 0.7 mm height enables stacking under shields and placement in narrow board gaps |
| Stable Low-Voltage Reference | 3.3 V nominal Zener with ±5% tolerance supports USB, LDO feedback, and MCU reset circuitry |
| Thermal Reliability | Rated for −65 °C to +150 °C junction temperature; MSL 1 moisture sensitivity level |
Applications
| Smartphone Power Management | USB Interface Clamping |
|---|---|
|
Use Scenario: Regulating and clamping 3.3 V supply rails in smartphone baseband processors and PMICs. IC Role / Device Role: Voltage reference and overvoltage clamp protecting sensitive analog and digital I/O. Use Value: Prevents rail collapse during transient surges while maintaining <5 µA leakage to extend battery life. |
Use Scenario: Protecting USB 2.0 D+/D− lines from ESD events and bus overvoltage. IC Role / Device Role: Bidirectional transient voltage suppressor leveraging Zener conduction in both directions. Use Value: Achieves >16 kV HBM immunity without increasing PCB area beyond standard SOD-523 pad layout. |
| Wearable Sensor Node Reference | Industrial IoT Edge Controller Biasing |
|
Use Scenario: Providing stable 3.3 V reference for ADCs and op-amps in compact wearable health monitors. IC Role / Device Role: Precision voltage reference with predictable −3.5 mV/°C drift for temperature-compensated sensing. Use Value: Enables sub-1% measurement accuracy across −20 °C to +70 °C ambient without calibration. |
Use Scenario: Biasing gate drivers and isolator inputs in programmable logic controllers with wide ambient swings. IC Role / Device Role: Stable shunt regulator supplying clean 3.3 V to isolated communication ICs. Use Value: Maintains regulation integrity up to +105 °C ambient due to 150 °C max TJ rating and low thermal resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C3V3 | Same 3.3 V nominal, ±5% tolerance, but in SOD-323 package (1.7 mm × 1.3 mm); 300 mW power rating | Larger footprint and lower power limit restrict use in ultra-dense layouts or higher-power clamping | Select when legacy SOD-323 land patterns exist and 300 mW suffices |
| MMSZ5226BT1G | 3.3 V nominal, ±5%, but in SOD-123 package (3.7 mm × 1.6 mm); 500 mW rating; higher ZZT (130 Ω) | Requires 3× more PCB area; higher dynamic impedance reduces regulation fidelity under fast transients | Choose only if SOD-123 is mandated by existing assembly infrastructure |
Compared with BZX584C3V3 and MMSZ5226BT1G, MM5Z3V3T5G offers the smallest footprint (SOD-523), highest power density (500 mW in 0.96 mm²), and lowest Zener impedance (95 Ω), making it optimal for next-generation portable and wearables where board space and regulation precision are critical.
Availability
MM5Z3V3T5G is available at Aetrix Electronics and suitable for smartphone power management, USB interface clamping, and wearable sensor node reference requiring stable component supply and full traceability.
Supply support for MM5Z3V3T5G 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM5ZxxxT5G series is part of onsemi's precision Zener regulator portfolio, engineered specifically for miniaturized, high-reliability voltage reference and clamping in portable and space-constrained electronic systems.
FAQ
What is the Zener voltage tolerance of MM5Z3V3T5G?
The MM5Z3V3T5G has a standard tolerance of ±5% around its nominal 3.3 V Zener voltage, meaning the actual measured VZ falls between 3.1 V and 3.5 V when tested at IZT = 5 mA and TA = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet.
Does MM5Z3V3T5G support automated SMT assembly?
Yes, MM5Z3V3T5G is qualified for lead-free reflow soldering up to 260 °C and meets MSL 1 (Moisture Sensitivity Level 1), meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. Its SOD-523 package is compatible with standard pick-and-place equipment and stencil printing processes.
What is the maximum reverse leakage current for MM5Z3V3T5G?
The maximum reverse leakage current (IR) for MM5Z3V3T5G is 5 µA at VR = 1 V and TA = 25 °C, as specified in the Electrical Characteristics table. This low leakage supports extended battery life in always-on portable devices where standby current must be minimized.
Can MM5Z3V3T5G be used as a bidirectional ESD protector?
While MM5Z3V3T5G is a unidirectional Zener diode, its forward voltage is ≤0.9 V at 10 mA, allowing it to conduct in forward bias during negative transients. Combined with its >16 kV HBM ESD rating, it functions effectively as a low-capacitance bidirectional clamp in low-speed signal lines like USB D+/D− when paired with a second device or used differentially.
How does the temperature coefficient affect MM5Z3V3T5G performance?
The MM5Z3V3T5G has a temperature coefficient of −3.5 mV/°C, meaning its Zener voltage decreases by approximately 3.5 mV per degree Celsius rise in junction temperature. This predictable drift enables system-level compensation in precision references and confirms stable operation across its full −65 °C to +150 °C junction temperature range.
MM5Z3V3T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±6.06%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z3V3T5G FAQ
1.How can I place an order for MM5Z3V3T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z3V3T5G 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 MM5Z3V3T5G reliable?
The price and inventory of MM5Z3V3T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z3V3T5G is usually 5 days.
3.What payment methods are accepted for MM5Z3V3T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z3V3T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z3V3T5G?
MM5Z3V3T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z3V3T5G 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 MM5Z3V3T5G?
For technical support, including MM5Z3V3T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z3V3T5G requirements.
6.How does Aetrix verify that MM5Z3V3T5G is sourced from the original manufacturer or authorized distributors?
All MM5Z3V3T5G 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 MM5Z3V3T5G meets industry standards.
7.What is the process for return or replacement of MM5Z3V3T5G?
All MM5Z3V3T5G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z3V3T5G, 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 MM5Z3V3T5G part is unused and in its original packaging.
Return procedure for MM5Z3V3T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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