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onsemi MM3Z3V3ST1
- Part No.:
- MM3Z3V3ST1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z3V3ST1.pdf
- Description:
- DIODE ZENER 3.43V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,748
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Product details
Overview
MM3Z3V3ST1 from ON Semiconductor is a 3.3 V ±3% tolerance Zener diode in SOD−323 package, rated for 300 mW steady-state power dissipation at 25°C, with 95 Ω maximum dynamic impedance at 5 mA test current and 5.0 μA max reverse leakage at 1.0 V. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM3Z3V3ST1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), and automotive-grade alternatives compliant with AEC−Q101.
Technical Context
This Zener regulator operates in reverse breakdown mode to clamp voltage across sensitive circuit nodes. Its tight 3.32–3.53 V tolerance at 5 mA IZT, low 95 Ω ZZT, and −3.5 mV/°C temperature coefficient enable stable reference performance in battery-powered systems.
Designed for surface-mount assembly on FR-4 PCBs, it features Pb-free plating, UL 94 V−0 flammability rating, and 260°C soldering tolerance for 10 seconds. The cathode is marked by a polarity band, and body dimensions are 1.7 mm × 1.25 mm × 0.9 mm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.32–3.53 V at 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Power Dissipation (PD) | 300 mW @ 25°C - supports continuous regulation in compact layouts without forced cooling |
| Zener Impedance (ZZT) | ≤95 Ω @ 5 mA - ensures minimal voltage deviation under load transients |
| Reverse Leakage (IR) | ≤1.0 μA @ 1.0 V - prevents parasitic current draw in standby modes |
| ESD Rating | Class 3 (>16 kV HBM) - withstands handling and system-level electrostatic discharge events |
| Package | SOD−323 (Case 477) - 1.7 mm × 1.25 mm footprint ideal for high-density mobile PCBs |
Pinout & Package
SOD−323 surface-mount package with cathode indicated by polarity band; 2-terminal device with no internal connections beyond anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Regulated output node | Connected to voltage rail being stabilized; reverse-biased during regulation |
| 2 (Anode) | Reference ground return | Tied to system ground or lower-potential node; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance (±3%) | Enables accurate 3.3 V reference without post-production trimming |
| Low profile (0.9 mm height) | Permits stacking under shields or placement near tall components |
| AEC−Q101 qualified variant available | Supports automotive infotainment and ADAS subsystems requiring certified reliability |
| Pb-free, Halogen-free, RoHS compliant | Meets global environmental compliance mandates without performance trade-offs |
Applications
| Smartphone Power Management | USB-C Port Protection |
|---|---|
Use Scenario: Regulating auxiliary 3.3 V supply for PMIC monitoring circuits in LTE smartphones. IC Role / Device Role / Timing Role: Voltage clamp protecting ADC input of fuel-gauge IC from overvoltage during hot-plug events. Use Value: Prevents latch-up in 12-bit analog front-end while occupying <1.8 mm² PCB area. | Use Scenario: Stabilizing CC logic level detection in USB-C receptacles during cable insertion. IC Role / Device Role / Timing Role: Reference shunt maintaining valid logic-high threshold despite VBUS coupling noise. Use Value: Ensures reliable Type-C orientation detection with ≤50 mV hysteresis margin. |
| Wearable Sensor Hub | Industrial IoT Edge Node |
Use Scenario: Providing stable bias for MEMS accelerometer signal conditioning in hearable devices. IC Role / Device Role / Timing Role: Low-noise voltage reference for op-amp gain-setting network in analog sensor chain. Use Value: Maintains ±0.5% full-scale accuracy over −20°C to +70°C operating range. | Use Scenario: Protecting RS-485 transceiver VCC pin from induced surges on factory-floor wiring. IC Role / Device Role / Timing Role: Transient suppressor clamping 3.3 V LDO output during EFT bursts. Use Value: Survives 4 kV EFT per IEC 61000-4-4 without degrading communication integrity. |
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-B3V3,115 (Nexperia) | Same 3.3 V nominal, ±2% tolerance; 200 mW rating; SOD-323 package | Lower power rating limits sustained current handling in high-duty-cycle clamping | Select when tighter tolerance outweighs power margin; verify thermal design at 200 mW limit |
| SZMM3Z3V3T1G (ON Semiconductor) | Identical electrical specs; AEC-Q101 qualified; same SOD-323 package | Required for automotive applications needing PPAP documentation and extended temperature validation | Direct drop-in replacement where automotive qualification is mandatory |
Compared with MM3Z3V3ST1, BZX384-B3V3 offers tighter tolerance but reduced power headroom, while SZMM3Z3V3T1G provides identical performance with certified automotive reliability-enabling seamless migration from consumer to automotive designs without layout changes.
Availability
MM3Z3V3ST1 is available at Aetrix Electronics and suitable for smartphone power management, USB-C port protection, and wearable sensor hub designs requiring stable component supply with rapid lead times and consistent lot traceability.
Supply support for MM3Z3V3ST1 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and edge applications.
The MM3ZxxxST1G series targets space-constrained, high-reliability voltage regulation in portable and automotive electronics, emphasizing tight tolerance, low-profile packaging, and robust ESD immunity.
FAQ
What is the exact Zener voltage range for MM3Z3V3ST1 at 5 mA test current?
The MM3Z3V3ST1 exhibits a reverse Zener voltage range of 3.32 V to 3.53 V when tested at IZT = 5 mA and TA = 25°C. This ±3% tolerance window is specified in the Electrical Characteristics table on page 3 of the ON Semiconductor datasheet (Rev. 24, December 2015). The MM3Z3V3ST1 achieves this precision using process-controlled doping and laser trimming during manufacturing.
Does MM3Z3V3ST1 support automotive-grade applications?
The standard MM3Z3V3ST1 is not AEC-Q101 qualified. However, its automotive-grade counterpart SZMM3Z3V3T1G shares identical electrical specifications and SOD-323 packaging while meeting AEC-Q101 stress testing requirements and supporting PPAP documentation. For automotive use, specify SZMM3Z3V3T1G-not MM3Z3V3ST1-to ensure compliance.
What is the maximum allowable junction temperature for MM3Z3V3ST1?
The MM3Z3V3ST1 has a junction and storage temperature range of −65°C to +150°C. Its thermal resistance from junction-to-ambient (RJA) is 416°C/W on FR-4 board with 1 cm² copper pad. Derating begins above 25°C at 2.4 mW/°C, limiting usable power to ~150 mW at 85°C ambient. This thermal profile is validated in the Maximum Ratings table of the MM3Z3V3ST1 datasheet.
How does the ESD robustness of MM3Z3V3ST1 compare to industry standards?
The MM3Z3V3ST1 achieves Class 3 Human Body Model (HBM) ESD rating (>16 kV), exceeding the JEDEC JS-001 Class 2 minimum (4 kV) and approaching Class 3B (16 kV) thresholds. This robustness is confirmed in the Specification Features section and enables safe handling in uncontrolled environments. The MM3Z3V3ST1's ESD performance is integral to its suitability for handheld and portable electronics assembly lines.
Can MM3Z3V3ST1 be used as a voltage reference in precision analog circuits?
Yes-the MM3Z3V3ST1 delivers stable 3.3 V regulation with low dynamic impedance (≤95 Ω) and minimal temperature coefficient (−3.5 mV/°C), making it suitable for non-critical analog references such as comparator thresholds or ADC bias networks. While not a bandgap reference, the MM3Z3V3ST1 provides adequate stability for cost-sensitive designs where ±1% absolute accuracy suffices across −20°C to +70°C.
MM3Z3V3ST1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.43 V
- Tolerance:
- ±3%
- Power - Max:
- 200 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MM3Z3V3ST1 FAQ
1.How can I place an order for MM3Z3V3ST1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z3V3ST1 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 MM3Z3V3ST1 reliable?
The price and inventory of MM3Z3V3ST1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z3V3ST1 is usually 5 days.
3.What payment methods are accepted for MM3Z3V3ST1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z3V3ST1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z3V3ST1?
MM3Z3V3ST1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z3V3ST1 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 MM3Z3V3ST1?
For technical support, including MM3Z3V3ST1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z3V3ST1 requirements.
6.How does Aetrix verify that MM3Z3V3ST1 is sourced from the original manufacturer or authorized distributors?
All MM3Z3V3ST1 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 MM3Z3V3ST1 meets industry standards.
7.What is the process for return or replacement of MM3Z3V3ST1?
All MM3Z3V3ST1 units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z3V3ST1, 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 MM3Z3V3ST1 part is unused and in its original packaging.
Return procedure for MM3Z3V3ST1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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