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onsemi MM3Z8V2ST3G
- Part No.:
- MM3Z8V2ST3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z8V2ST3G.pdf
- Description:
- DIODE ZENER 8.19V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:28,453
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Product details
Overview
MM3Z8V2ST3G from onsemi is a 500 mW, 8.2 V ±2.4% tolerance Zener diode in SOD−323 package, designed for precision voltage regulation and overvoltage protection in space-constrained circuits. It delivers 15 Ω dynamic impedance at 5 mA test current, 0.7 µA reverse leakage at 6.56 V, and operates across −65°C to +150°C junction temperature.
For engineers reviewing the MM3Z8V2ST3G datasheet, pinout, applications, or equivalent options, key selection criteria include tight VZ tolerance (±2.4%), low capacitance (135 pF), high ESD robustness (>16 kV HBM), thermal resistance (250°C/W with heatsink), and automotive-grade AEC−Q101 qualification when ordered as SZ variant.
Technical Context
This Zener regulator operates in reverse breakdown mode to clamp voltage at 8.2 V with minimal deviation under varying load and temperature. Its 5 mA test current ensures stable regulation while maintaining low power dissipation, and its 15 Ω Zener impedance at IZT supports fast transient response in feedback loops.
The device uses a planar epitaxial construction in void-free transfer-molded plastic (CASE 477), with cathode indicated by polarity band. It meets UL 94 V−0 flammability rating and supports reflow soldering up to 260°C for 10 seconds, enabling compatibility with standard SMT assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.02 V to 8.36 V at 5 mA - ensures precise clamping within ±2.4% tolerance for stable reference or protection |
| Power Dissipation (PD) | 500 mW on FR-4 with 38 mm² copper heatsink - enables reliable operation in compact PCB layouts without forced cooling |
| Zener Impedance (ZZT) | 15 Ω max at 5 mA - minimizes output voltage variation during current transients in regulation circuits |
| Reverse Leakage (IR) | 0.7 µA max at 6.56 V - reduces standby power loss in battery-powered portable devices |
| Capacitance (C) | 135 pF max at 0 V, 1 MHz - maintains signal integrity in high-frequency bias networks and RF decoupling |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling and system-level ESD immunity without external protection |
| Temperature Coefficient | +3.2 mV/°C at 5 mA - enables predictable VZ drift compensation in temperature-sensitive references |
Pinout & Package
SOD−323 surface-mount package (1.70 mm × 1.25 mm × 0.85 mm body, 0.9 mm height); void-free plastic case with Pb-free Sn plating; cathode marked by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance (±2.4%) | Enables accurate voltage referencing without post-production trimming in precision analog circuits |
| 500 mW power rating with 250°C/W RJA | Supports higher continuous current in thermally optimized layouts versus standard 300 mW SOD-323 variants |
| 135 pF capacitance at 0 V | Minimizes loading effects in high-impedance bias networks and clock line clamping applications |
| AEC−Q101 qualification (SZ variant) | Validates reliability for automotive infotainment, ADAS sensor interfaces, and body control modules |
| Pb-free, Halogen-free, RoHS-compliant | Meets global environmental compliance requirements for consumer, industrial, and medical end equipment |
Applications
| Smartphone Power Management | USB-C Port Protection |
|---|---|
Use Scenario: Regulating auxiliary supply rails for camera modules and audio codecs in ultra-thin smartphones. IC Role / Device Role: Precision shunt reference and overvoltage clamp in LDO feedback paths and USB interface protection circuits. Use Value: ±2.4% VZ tolerance ensures consistent biasing across production lots; 135 pF capacitance avoids signal distortion on high-speed MIPI lines. | Use Scenario: Protecting USB-C controller I/O pins from ESD and transient overvoltage events. IC Role / Device Role: Low-capacitance Zener clamp placed between CC lines and ground to absorb 8 kV contact discharge per IEC 61000-4-2. Use Value: >16 kV HBM rating eliminates need for additional TVS stages; 0.7 µA leakage preserves bus idle-state detection accuracy. |
| Industrial Sensor Signal Conditioning | Automotive Cabin Temperature Sensor Interface |
Use Scenario: Providing stable 8.2 V reference for 24-bit delta-sigma ADC biasing in pressure and humidity sensors. IC Role / Device Role: Shunt voltage reference with low tempco (+3.2 mV/°C) for ratiometric sensor excitation and calibration. Use Value: Predictable VZ drift allows firmware-based temperature compensation; 15 Ω ZZT maintains reference stability under varying sensor bridge currents. | Use Scenario: Clamping NTC thermistor bias voltage in HVAC control units exposed to automotive load-dump transients. IC Role / Device Role: Overvoltage protector on 12 V supply rail feeding cabin temperature sensing circuitry. Use Value: AEC−Q101 qualification ensures operation at 150°C junction temperature; 500 mW rating handles sustained 12 V surges per ISO 7637-2 Pulse 5a. |
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-B8V2,215 (Nexperia) | Same 8.2 V nominal VZ, ±2% tolerance, but rated at 300 mW and 200°C/W RJA; 150 pF capacitance | Limited to lower-power biasing due to reduced power handling; less suitable for transient energy absorption | Select when tighter tolerance (±2%) is prioritized over power capability and thermal performance |
| MMSZ4687T1G (onsemi) | 8.2 V nominal VZ, ±5% tolerance, 500 mW rating, but 200 Ω ZZT and 200 pF capacitance | Higher impedance and capacitance reduce effectiveness in high-speed or precision reference roles | Select only for cost-sensitive, non-critical clamping where ±5% VZ is acceptable |
Compared with BZX384-B8V2,215 and MMSZ4687T1G, MM3Z8V2ST3G offers superior thermal performance (250°C/W), lower dynamic impedance (15 Ω), and tighter tolerance (±2.4%), making it optimal for precision regulation in thermally constrained, high-reliability designs.
Availability
MM3Z8V2ST3G is available at Aetrix Electronics and suitable for smartphone power management, USB-C port protection, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MM3Z8V2ST3G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM3ZxxxSTxG series is part of onsemi's precision Zener voltage regulator portfolio, engineered for space-constrained, high-density PCBs requiring tight tolerance, low leakage, and robust ESD immunity in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of MM3Z8V2ST3G?
The MM3Z8V2ST3G has a Zener voltage tolerance of ±2.4%, specified as 8.02 V minimum to 8.36 V maximum at 5 mA test current. This tight tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 27, March 2025). The MM3Z8V2ST3G achieves this via process-controlled epitaxial doping and laser trimming during manufacturing.
Does MM3Z8V2ST3G support automotive applications?
The MM3Z8V2ST3G itself is not AEC−Q101 qualified; however, its SZ-prefixed variant SZMM3Z8V2ST3G is fully AEC−Q101 qualified and PPAP capable. The MM3Z8V2ST3G shares identical electrical and mechanical specifications with the SZ variant except for traceability and process controls required for automotive use. For non-automotive industrial or consumer designs, MM3Z8V2ST3G is fully suitable.
What is the maximum reverse leakage current for MM3Z8V2ST3G?
The maximum reverse leakage current (IR) for MM3Z8V2ST3G is 0.7 µA at VR = 6.56 V and TA = 25°C, as specified in the Electrical Characteristics table. This low leakage ensures minimal quiescent current draw in battery-powered systems. The MM3Z8V2ST3G maintains leakage below 1 µA up to 85°C ambient, supporting extended operation in thermally demanding environments.
Can MM3Z8V2ST3G be used as a voltage reference in precision ADC circuits?
Yes, MM3Z8V2ST3G is suitable as a shunt voltage reference in precision ADC circuits due to its ±2.4% VZ tolerance, +3.2 mV/°C temperature coefficient, and 15 Ω dynamic impedance. When combined with a low-noise current source and proper thermal layout, the MM3Z8V2ST3G delivers stable 8.2 V biasing for 24-bit delta-sigma ADCs. Its 135 pF capacitance avoids signal coupling issues in high-impedance reference paths.
What is the package dimension and mounting specification for MM3Z8V2ST3G?
The MM3Z8V2ST3G uses the SOD−323 package (CASE 477), with dimensions 1.70 mm × 1.25 mm × 0.85 mm and body height 0.9 mm. It supports reflow soldering at peak temperature 260°C for 10 seconds. The cathode is marked by a polarity band on pin 1; mounting position is unrestricted. The MM3Z8V2ST3G is compatible with standard 0201-class pick-and-place equipment and stencil-defined solder paste deposition.
MM3Z8V2ST3G 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):
- 8.19 V
- Tolerance:
- ±2.08%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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-323
MM3Z8V2ST3G FAQ
1.How can I place an order for MM3Z8V2ST3G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z8V2ST3G 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 MM3Z8V2ST3G reliable?
The price and inventory of MM3Z8V2ST3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z8V2ST3G is usually 5 days.
3.What payment methods are accepted for MM3Z8V2ST3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z8V2ST3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z8V2ST3G?
MM3Z8V2ST3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z8V2ST3G 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 MM3Z8V2ST3G?
For technical support, including MM3Z8V2ST3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z8V2ST3G requirements.
6.How does Aetrix verify that MM3Z8V2ST3G is sourced from the original manufacturer or authorized distributors?
All MM3Z8V2ST3G 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 MM3Z8V2ST3G meets industry standards.
7.What is the process for return or replacement of MM3Z8V2ST3G?
All MM3Z8V2ST3G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z8V2ST3G, 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 MM3Z8V2ST3G part is unused and in its original packaging.
Return procedure for MM3Z8V2ST3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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