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onsemi MM3Z75VT1
- Part No.:
- MM3Z75VT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z75VT1.pdf
- Description:
- DIODE ZENER 75V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:21,000
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Product details
Overview
MM3Z75VT1 from onsemi is a 75 V ±5% tolerance, 200 mW SOD−323 surface-mount Zener diode designed for precision voltage regulation and overvoltage protection in space-constrained circuits. It delivers 73.4 V nominal Zener voltage at 2 mA test current, exhibits 255 Ω dynamic impedance at IZT, and supports ≤0.05 µA leakage at 52.5 V reverse bias - ideal for voltage reference and ESD-protected bias networks in portable power rails.
For engineers reviewing the MM3Z75VT1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 75 V regulation point, 200 mW power rating, SOD−323 footprint compatibility, Class 3 (≥16 kV) HBM ESD rating, and −65°C to +150°C operating temperature range.
Technical Context
The MM3Z75VT1 operates as a two-terminal, cathode-anode polarized voltage reference device with sharp reverse breakdown characteristics. Its Zener mechanism provides stable regulation under low-current conditions (IZT = 2 mA), and its 255 Ω dynamic impedance at IZT ensures predictable voltage deviation across load variations.
Thermal design is constrained by a 635°C/W junction-to-ambient thermal resistance and 200 mW steady-state dissipation derated linearly above 25°C (1.5 mW/°C). The device's 35 pF capacitance at 0 V bias and 1 MHz makes it suitable for DC/low-frequency regulation but not RF bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 70–79 V at IZT = 2 mA; nominal 75 V defines precise clamping threshold for 52.5–88.6 V system rails |
| Power Dissipation (PD) | 200 mW at TA = 25°C; limits continuous current to ~2.67 mA at 75 V without heatsinking |
| Zener Impedance (ZZT) | 255 Ω max at IZT = 2 mA; determines output voltage variation under dynamic load changes |
| Leakage Current (IR) | ≤0.05 µA at VR = 52.5 V; ensures minimal quiescent power loss in high-impedance bias networks |
| ESD Rating | Class 3 (>16 kV) per HBM; enables direct integration into handheld device front-end protection without added TVS |
| Package | SOD−323 (Case 477); 1.7 mm × 1.25 mm × 0.9 mm footprint fits 0402-class PCB real estate |
| Junction Temp Range | −65°C to +150°C; supports operation in automotive under-hood and industrial ambient environments |
Pinout & Package
SOD−323 package with molded plastic case, cathode indicated by polarity band. Mounting position is unrestricted; Pb-free (Sn-only) or Pb−Sn plating available. Maximum solder temperature: 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation; polarity band identifies this terminal |
| 2 | Anode | Connected to circuit ground or lower-potential rail; completes conduction path during breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD−323 package | 0.9 mm height enables stacking under shields and use in ultra-thin mobile PCBs |
| High-precision Zener voltage | ±5% tolerance (70–79 V) ensures tight regulation without post-production trimming |
| Ultra-low leakage current | ≤0.05 µA at 52.5 V allows use in micropower sensor biasing and battery-monitoring dividers |
| Pb-free and RoHS-compliant | G-suffix indicates Sn-only termination compatible with lead-free reflow profiles (J-STD-020) |
| UL 94 V−0 flammability rating | Meets safety standards for enclosed consumer and medical power supply designs |
Applications
| Battery Voltage Monitoring | Portable Device Power Rail Clamping |
|---|---|
|
Use Scenario: Monitoring Li-ion battery pack voltage in smart wearables to trigger low-battery alerts before cutoff. IC Role / Device Role / Timing Role: Zener reference in resistive divider feeding ADC input of microcontroller. Use Value: 75 V nominal rating accommodates up to 4-series-cell packs (16.8 V full charge) with margin; 0.05 µA leakage preserves standby current budget. |
Use Scenario: Protecting USB-C PD controller ICs from transient overvoltage on VBUS lines in compact power adapters. IC Role / Device Role / Timing Role: Shunt regulator clamping VBUS to safe level during surge events. Use Value: 200 mW rating handles short-duration surges; SOD−323 footprint integrates directly adjacent to connector without layout redesign. |
| Industrial Sensor Bias Network | Automotive Cabin Control Reference |
|
Use Scenario: Providing stable excitation voltage to RTD or bridge sensors in factory-floor condition monitoring nodes. IC Role / Device Role / Timing Role: Precision voltage reference in Wheatstone bridge bias leg. Use Value: 255 Ω ZZT minimizes sensitivity to supply ripple; −65°C to +150°C range covers unheated outdoor enclosure operation. |
Use Scenario: Generating fixed reference for HVAC actuator feedback in vehicle cabin control modules. IC Role / Device Role / Timing Role: Stable Zener reference for op-amp comparator thresholds. Use Value: Class 3 ESD rating withstands assembly handling and in-vehicle static discharge; Pb-free termination meets automotive AEC-Q200 process requirements. |
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-B75,115 (Nexperia) | Same 75 V nominal, 200 mW, SOD-323; 300 Ω ZZT @ 5 mA (vs. 255 Ω @ 2 mA); 0.1 µA IR @ 52.5 V | Higher test current shifts regulation point slightly; higher leakage may impact ultra-low-power systems | Select when sourcing diversity is required and 0.1 µA leakage is acceptable in bias networks |
| MMSZ5265B-TP (Micro Commercial Components) | 75 V nominal, 500 mW, SOD-123; 150 Ω ZZT @ 10 mA; 0.1 µA IR @ 52.5 V; larger 2.8 mm × 1.6 mm footprint | Doubles power handling but requires PCB layout change; lower impedance benefits high-current shunt use | Select when higher surge energy absorption is needed and board space permits SOD-123 placement |
Compared with BZX384-B75 and MMSZ5265B-TP, the MM3Z75VT1 offers the lowest leakage and tightest Zener impedance at low test current - making it optimal for micropower, high-precision reference roles where SOD−323 size is mandatory.
Availability
MM3Z75VT1 is available at Aetrix Electronics and suitable for battery voltage monitoring, portable device power rail clamping, and industrial sensor bias networks requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for MM3Z75VT1 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 supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The MM3Z75VT1 belongs to the MM3ZxxxT1 series of 200 mW Zener regulators engineered specifically for miniaturized, high-density PCBs in portable and battery-powered systems.
FAQ
What is the nominal Zener voltage and tolerance of the MM3Z75VT1?
The MM3Z75VT1 has a nominal Zener voltage of 75 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 70 V and 79 V when tested at IZT = 2 mA and TA = 25°C. This specification is verified per the onsemi MM3Z2V4T1/D datasheet Rev. 7, and the MM3Z75VT1 maintains this rating across its qualified operating temperature range.
What is the maximum power dissipation and thermal derating behavior of the MM3Z75VT1?
The MM3Z75VT1 is rated for 200 mW total device dissipation at TA = 25°C, with linear derating of 1.5 mW/°C above that temperature. Its junction-to-ambient thermal resistance is 635°C/W, so sustained operation near maximum power requires careful PCB copper area design. This thermal profile is confirmed in the "Maximum Ratings" table of the official onsemi datasheet for MM3Z75VT1.
Does the MM3Z75VT1 have an ESD rating, and if so, what is it?
Yes, the MM3Z75VT1 carries a Class 3 Human Body Model (HBM) ESD rating exceeding 16 kV, as specified in the "Specification Features" section of the onsemi MM3Z2V4T1/D datasheet. This high immunity allows direct handling and placement in ESD-sensitive environments like smartphone and wearable manufacturing without additional protection circuitry.
What package type and dimensions does the MM3Z75VT1 use?
The MM3Z75VT1 uses the SOD−323 package (Case 477), measuring 1.7 mm × 1.25 mm × 0.9 mm with a 0.25–0.4 mm lead width. Pin 1 is cathode, marked by a polarity band. These mechanical dimensions and marking details are documented in the "Package Dimensions" section (Issue G) of the official onsemi datasheet for MM3Z75VT1.
Is the MM3Z75VT1 RoHS-compliant and lead-free?
Yes, the "G" suffix in MM3Z75VT1 explicitly denotes a Pb-free package with Sn-only termination, compliant with RoHS Directive 2011/65/EU. The device meets J-STD-020 moisture sensitivity level (MSL) requirements and supports standard lead-free reflow profiles - confirmed in the "Ordering Information" and "Mechanical Characteristics" sections of the onsemi MM3Z2V4T1/D datasheet.
MM3Z75VT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 75 V
- Tolerance:
- ±6%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 255 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 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
MM3Z75VT1 FAQ
1.How can I place an order for MM3Z75VT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z75VT1 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 MM3Z75VT1 reliable?
The price and inventory of MM3Z75VT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z75VT1 is usually 5 days.
3.What payment methods are accepted for MM3Z75VT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z75VT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z75VT1?
MM3Z75VT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z75VT1 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 MM3Z75VT1?
For technical support, including MM3Z75VT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z75VT1 requirements.
6.How does Aetrix verify that MM3Z75VT1 is sourced from the original manufacturer or authorized distributors?
All MM3Z75VT1 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 MM3Z75VT1 meets industry standards.
7.What is the process for return or replacement of MM3Z75VT1?
All MM3Z75VT1 units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z75VT1, 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 MM3Z75VT1 part is unused and in its original packaging.
Return procedure for MM3Z75VT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM3Z75VT1 Tags
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