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onsemi MM3Z6V8C
- Part No.:
- MM3Z6V8C
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
MM3Z6V8C.pdf
- Description:
- DIODE ZENER 6.8V 200MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:5,548
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Product details
Overview
MM3Z6V8C from onsemi is a 6.8 V ±5% Zener diode in SOD−323FL package, rated for 200 mW power dissipation, with 14 Ω zener impedance at 5 mA test current and 1.8 µA reverse leakage at 4 V. It provides precision voltage regulation in low-power biasing and reference circuits.
For engineers reviewing the MM3Z6V8C datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal behavior, SOD−323FL terminal mapping, and direct alternatives for voltage reference design, ESD-protected signal clamping, and analog rail stabilization.
Technical Context
The MM3Z6V8C operates as a two-terminal shunt regulator, maintaining stable 6.8 V output across 0.25–10 mA operating current range. Its 14 Ω dynamic impedance (ZZT) at IZT = 5 mA ensures tight regulation under varying load conditions.
Designed for surface-mount use on standard PCB land patterns, it exhibits 595 °C/W junction-to-ambient thermal resistance and supports operation from −65 °C to +150 °C storage temperature, with maximum junction temperature of 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.46 V min / 6.8 V nominal / 7.14 V max at 5 mA - defines regulated output voltage tolerance band for reference stability |
| Zener Impedance (ZZT) | 14 Ω max at 5 mA - determines voltage deviation under dynamic current changes |
| Power Dissipation (PD) | 200 mW - sets maximum continuous DC power handling without derating |
| Reverse Leakage (IR) | 1.8 µA max at 4 V - limits quiescent current in high-impedance bias networks |
| Forward Voltage (VF) | 1.0 V max at 10 mA - enables use as low-drop clamp or protection diode in forward conduction |
| Thermal Resistance (RJA) | 595 °C/W - requires minimal copper area for safe operation at full power |
Pinout & Package
SOD−323FL is a 2-pin ultra-thin surface-mount package with cathode stripe marking; terminals are non-polarized for bidirectional mounting but functionally asymmetric (anode/cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connects to lower-potential node; forward conduction path when biased >1.0 V |
| 2 | Cathode | Marked end; connects to regulated voltage rail; conducts in reverse breakdown at ~6.8 V |
Key Features
| Feature | Design Value |
|---|---|
| ±5% VZ tolerance | Enables precise voltage references without external trimming in space-constrained designs |
| SOD−323FL footprint | Reduces board area by >50% vs. SOD-123; compatible with fine-pitch automated placement |
| Pb-free & RoHS compliant | Meets global environmental compliance requirements without lead-based solder compatibility compromises |
| 150 °C max junction temperature | Supports operation in thermally aggressive environments such as automotive under-hood modules |
Applications
| ADC Reference Voltage Source | Low-Power Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 6.8 V reference to 12-bit SAR ADC input scaling network. IC Role / Device Role / Timing Role: Shunt voltage reference establishing known full-scale input threshold. Use Value: 14 Ω impedance minimizes code-dependent reference droop; ±5% VZ tolerance aligns with typical 12-bit INL spec. | Use Scenario: Biasing RC reset circuit for ARM Cortex-M0+ MCU requiring clean 6.8 V threshold detection. IC Role / Device Role / Timing Role: Precision voltage threshold element triggering POR or brown-out detection. Use Value: 1.8 µA leakage at 4 V prevents premature discharge of timing capacitor; SOD−323FL enables compact layout near reset pin. |
| ESD-Safe Signal Clamping | Industrial Sensor Excitation Supply |
Use Scenario: Protecting 3.3 V I²C lines against transient overvoltage using back-to-back configuration. IC Role / Device Role / Timing Role: Bidirectional clamping diode limiting excursion to ±6.8 V relative to rail. Use Value: 1.0 V forward drop enables low-threshold clamping; matte tin finish ensures reliable solder joint formation. | Use Scenario: Generating stable excitation voltage for 4–20 mA loop-powered pressure transducers. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying constant 6.8 V to bridge sensor Wheatstone network. Use Value: 200 mW rating supports up to 29 mA load current; 595 °C/W RJA allows operation without heatsink in ambient ≤85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B6V8 | Same 6.8 V ±5%, SOD-323 package, but 300 mW rating and 10 Ω ZZT | Higher power margin suits higher-current bias networks; tighter impedance improves regulation linearity | Select when >200 mW headroom or sub-10 Ω impedance required; verify thermal pad layout compatibility |
| MMSZ4687 | 6.8 V ±5%, SOD-123 package, 500 mW rating, 15 Ω ZZT, 2 µA IR at 4 V | Larger footprint accommodates higher power; slightly higher leakage affects ultra-low-IQ systems | Choose for legacy SOD-123 assembly lines or where 500 mW dissipation is mandatory; not drop-in due to package size |
Compared with MM3Z6V8C, BZX384-B6V8 offers improved regulation accuracy and power margin in identical footprint, while MMSZ4687 trades miniaturization for robustness and thermal headroom-making MM3Z6V8C optimal for space-constrained, low-quiescent designs.
Availability
MM3Z6V8C is available at Aetrix Electronics and suitable for voltage reference design, ESD-protected signal clamping, and analog rail stabilization requiring stable component supply and consistent parametric performance.
Supply support for MM3Z6V8C 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 MM3Z series targets high-volume, space-constrained applications needing precision low-power voltage regulation-designed specifically for portable electronics, wearables, and sensor nodes where SOD−323FL footprint and ±5% tolerance deliver cost-performance balance.
FAQ
What is the exact Zener voltage tolerance for MM3Z6V8C?
The MM3Z6V8C has a guaranteed Zener voltage tolerance of ±5% at 25 °C, meaning its measured VZ falls between 6.46 V and 7.14 V when tested at IZT = 5 mA. This tolerance is maintained across the full operating temperature range per onsemi's characterization data, and applies specifically to the "C" series variant denoted in the part number MM3Z6V8C.
Can MM3Z6V8C be used in forward-biased applications?
Yes, MM3Z6V8C functions as a standard silicon diode in forward bias, with a maximum forward voltage of 1.0 V at 10 mA. This characteristic enables dual-use roles-for example, as a low-drop clamping element in bidirectional ESD protection circuits-while retaining its primary function as a 6.8 V shunt regulator in reverse breakdown.
What is the maximum continuous power dissipation for MM3Z6V8C?
The MM3Z6V8C is rated for 200 mW maximum continuous power dissipation at 25 °C ambient, derating linearly above that temperature based on its 595 °C/W junction-to-ambient thermal resistance. At 85 °C ambient, its usable power drops to approximately 128 mW, calculated as 200 mW × (1 − (85 − 25)/595).
How does the SOD−323FL package affect PCB layout for MM3Z6V8C?
The SOD−323FL package of MM3Z6V8C uses a 1.7 mm × 1.25 mm footprint with 0.7 mm pin pitch, requiring precise stencil aperture design and reflow profile control. Its thin profile (0.9 mm max height) supports low-profile assemblies, but thermal relief must be minimized on pads to maintain 595 °C/W RJA; onsemi specifies minimum land pad dimensions in case outline 477AB.
Is MM3Z6V8C suitable for automotive applications?
MM3Z6V8C meets AEC-Q200 stress test requirements for passive components and operates reliably from −65 °C to +150 °C junction temperature. Its Pb-free, RoHS-compliant construction and stable ±5% VZ tolerance make it suitable for non-safety-critical automotive subsystems such as body control modules and cabin sensors-though system-level qualification remains the customer's responsibility.
MM3Z6V8C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 14 Ohms
- Current - Reverse Leakage @ Vr:
- 1.8 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
MM3Z6V8C FAQ
1.How can I place an order for MM3Z6V8C through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z6V8C 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 MM3Z6V8C reliable?
The price and inventory of MM3Z6V8C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z6V8C is usually 5 days.
3.What payment methods are accepted for MM3Z6V8C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z6V8C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z6V8C?
MM3Z6V8C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z6V8C 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 MM3Z6V8C?
For technical support, including MM3Z6V8C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z6V8C requirements.
6.How does Aetrix verify that MM3Z6V8C is sourced from the original manufacturer or authorized distributors?
All MM3Z6V8C 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 MM3Z6V8C meets industry standards.
7.What is the process for return or replacement of MM3Z6V8C?
All MM3Z6V8C units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z6V8C, 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 MM3Z6V8C part is unused and in its original packaging.
Return procedure for MM3Z6V8C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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