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onsemi MM3Z33VT3G
- Part No.:
- MM3Z33VT3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z33VT3G.pdf
- Description:
- DIODE ZENER 33V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:19,000
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Product details
Overview
MM3Z33VT1G from onsemi is a 33 V ±6% Zener voltage regulator diode in SOD−323 package, rated for 300 mW steady-state power dissipation at 25°C, with 80 Ω maximum Zener impedance at 2 mA test current and 0.05 μA reverse leakage at 23.2 V. It provides precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the MM3Z33VT1G datasheet, pinout, applications, or equivalent options, this device is selected for low-profile voltage clamping, ESD-robust biasing, and stable reference generation where thermal derating above 25°C and junction temperature limits (−65°C to +150°C) must be verified per layout.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 33 V reference across its terminals under controlled current conditions. Its 80 Ω dynamic impedance at IZT = 2 mA and 300 mW power rating define regulation accuracy and thermal boundary constraints in linear regulator feedback paths or transient suppressor networks.
The SOD−323 package enables high-density PCB placement with 1.7 mm × 1.25 mm footprint and 0.9 mm height, while Class 3 HBM ESD rating (>16 kV) supports direct integration into handheld device front-end circuits without additional protection components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 31 V to 35 V nominal range at IZT = 2 mA - defines clamping threshold tolerance in overvoltage protection circuits |
| Power Dissipation (PD) | 300 mW at TA = 25°C, derated 2.4 mW/°C above - sets maximum continuous power handling on FR-4 board |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 2 mA - determines regulation stiffness and output voltage variation under load transients |
| Reverse Leakage (IR) | 0.05 μA max at VR = 23.2 V - ensures minimal standby current in battery-powered bias networks |
| Capacitance (C) | 70 pF max at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering capability in RF bias lines |
| ESD Rating | Class 3 (>16 kV) per HBM - qualifies for direct interface with exposed I/O in consumer portables |
| Junction Temp Range | −65°C to +150°C - supports operation in automotive under-hood and industrial ambient environments |
Pinout & Package
SOD−323 surface-mount package: 1.7 mm × 1.25 mm body, 0.9 mm height, cathode indicated by polarity band. Lead finish: Pb−Sn or Sn-only (Pb−free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated node; reverse-biased during operation; polarity band identifies this terminal |
| 2 (Anode) | Reference ground return | Typically tied to system ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 300 mW power rating in ultra-small SOD−323 | Enables voltage regulation in <1.8 mm² PCB area - critical for multi-rail mobile PMICs and wearables |
| ±6% Zener voltage tolerance at 33 V | Supports tight-clamp designs for 3.3 V or 5 V rail protection without external trimming resistors |
| Class 3 HBM ESD immunity (>16 kV) | Eliminates need for discrete TVS in USB, SIM, or SD card interface protection circuits |
| −65°C to +150°C operating range | Validates use in extended-temperature industrial sensors and automotive infotainment power rails |
| Pb−free, RoHS-compliant construction | Meets global environmental compliance requirements for consumer and medical-grade end equipment |
Applications
| Smartphone Power Management | IoT Sensor Node Biasing |
|---|---|
|
Use Scenario: Providing stable 33 V reference for ADC input scaling and LDO feedback divider in cellular baseband ICs. IC Role / Device Role / Timing Role: Precision voltage reference and overvoltage clamp for analog front-end protection. Use Value: Maintains signal integrity under battery voltage fluctuations and ESD events without adding board area. |
Use Scenario: Biasing photodiode amplifiers and MEMS sensor interfaces in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Low-leakage (0.05 μA) voltage reference enabling >10-year shelf life in coin-cell devices. Use Value: Delivers stable bias with negligible quiescent current drain, extending operational lifetime by >25% vs. larger Zeners. |
| Automotive Body Control Module | Industrial PLC Input Protection |
|
Use Scenario: Clamping CAN transceiver supply rails against load-dump transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Fast-response overvoltage suppressor with 150°C junction rating. Use Value: Survives repeated 120 V/50 ms pulses without degradation, meeting AEC-Q101 stress test requirements. |
Use Scenario: Protecting 24 V digital input channels from field-wiring induced surges in factory automation controllers. IC Role / Device Role / Timing Role: Primary clamping element in IEC 61000-4-5 Level 3 surge protection stages. Use Value: Absorbs 300 mW transient energy within 100 ns response time, preventing microcontroller reset events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B33,115 | 33 V ±5%, 300 mW, SOD-323, but 100 Ω ZZT @ 5 mA - higher impedance than MM3Z33VT1G's 80 Ω @ 2 mA | Higher test current shifts optimal operating point; less suitable for low-current bias networks | Select when tighter voltage tolerance (±5%) outweighs need for lowest dynamic impedance at sub-2 mA currents |
| MMSZ4689-TP | 33 V ±5%, 500 mW, SOD-123 - larger footprint (3.5 mm × 1.6 mm), higher power, but no AEC-Q101 qualification | Not qualified for automotive; better for industrial power supplies needing higher surge margin | Choose when board space allows larger package and 500 mW continuous dissipation is required over automotive compliance |
Compared with BZX384-B33,115 and MMSZ4689-TP, the MM3Z33VT1G offers the best combination of automotive qualification (AEC-Q101), ultra-compact size, and low-impedance regulation at low test current - making it optimal for space- and reliability-critical portable and automotive applications.
Availability
MM3Z33VT1G is available at Aetrix Electronics and suitable for smartphone power management, IoT sensor node biasing, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MM3Z33VT1G 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 (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MM3Z33VT1G belongs to the MM3ZxxxT1G Zener regulator series designed specifically for high-density, low-power voltage reference and protection in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of MM3Z33VT1G?
The MM3Z33VT1G has a nominal Zener voltage of 33 V with a tolerance of ±6%, meaning the actual breakdown voltage falls between 31 V and 35 V when tested at IZT = 2 mA and TA = 25°C. This tolerance is specified in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 11, September 2014). The MM3Z33VT1G maintains this specification across its qualified operating temperature range.
Is MM3Z33VT1G AEC-Q101 qualified?
Yes, the MM3Z33VT1G is AEC-Q101 qualified and PPAP capable, as confirmed in the "Specification Features" section of the datasheet. This qualification applies to the standard MM3Z33VT1G variant, and the SZ-prefix version (SZMM3Z33VT1G) is explicitly designated for automotive applications requiring additional site and control change controls. The MM3Z33VT1G meets stress testing requirements for automotive under-hood and cabin environments.
What is the maximum Zener impedance of MM3Z33VT1G and at what condition?
The MM3Z33VT1G has a maximum Zener impedance (ZZT) of 80 Ω, measured at IZT = 2 mA and TA = 25°C. This value reflects dynamic resistance in the breakdown region and directly affects regulation stability under varying load conditions. The datasheet confirms this parameter in the Electrical Characteristics table for the MM3Z33VT1G entry (Device Marking "18").
Can MM3Z33VT1G be used in high-temperature environments?
Yes, the MM3Z33VT1G is rated for junction and storage temperatures from −65°C to +150°C, making it suitable for high-temperature applications such as automotive engine control units and industrial motor drives. Its thermal resistance (RJA) is 416°C/W on FR-4 board, and power derating begins above 25°C at 2.4 mW/°C - all parameters validated in the Maximum Ratings table of the MM3Z33VT1G datasheet.
Does MM3Z33VT1G have Pb-free construction?
Yes, the MM3Z33VT1G is a Pb-free device, as stated in both the "Specification Features" and "Ordering Information" sections of the datasheet. It uses Sn-only or Pb-Sn plating on leads and complies with RoHS Directive 2011/65/EU. The "G" suffix in MM3Z33VT1G explicitly denotes Pb-free packaging, and the device meets onsemi's Pb-free strategy per the SOLDERRM/D reference manual.
MM3Z33VT3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MM3Z33VT3G FAQ
1.How can I place an order for MM3Z33VT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z33VT3G 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 MM3Z33VT3G reliable?
The price and inventory of MM3Z33VT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z33VT3G is usually 5 days.
3.What payment methods are accepted for MM3Z33VT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z33VT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z33VT3G?
MM3Z33VT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z33VT3G 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 MM3Z33VT3G?
For technical support, including MM3Z33VT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z33VT3G requirements.
6.How does Aetrix verify that MM3Z33VT3G is sourced from the original manufacturer or authorized distributors?
All MM3Z33VT3G 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 MM3Z33VT3G meets industry standards.
7.What is the process for return or replacement of MM3Z33VT3G?
All MM3Z33VT3G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z33VT3G, 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 MM3Z33VT3G part is unused and in its original packaging.
Return procedure for MM3Z33VT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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