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onsemi MM3Z36VST1G
- Part No.:
- MM3Z36VST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z36VST1G.pdf
- Description:
- DIODE ZENER 36V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:13,219
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Product details
Overview
MM3Z36VST1G from onsemi is a 36 V ±2.5% tolerance Zener diode in SOD−323 package, rated for 500 mW steady-state power dissipation at 25°C, with 500 Ω maximum dynamic impedance at 5 mA test current and 25.2 mV/°C temperature coefficient - used for precision voltage reference and overvoltage clamping in space-constrained portable electronics.
For engineers reviewing the MM3Z36VST1G datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 36 V nominal Zener voltage tolerance (±2.5%), low-profile 1.7 mm × 1.25 mm × 0.9 mm SOD−323 footprint, Class 3 ESD rating (>16 kV HBM), and suitability for high-density PCBs where thermal derating to 4.0 mW/°C above 25°C must be accounted for.
Technical Context
This Zener regulator operates in reverse breakdown mode with a specified test current of 5.0 mA and supports stable voltage reference generation across −65°C to +150°C junction temperature range. Its 500 Ω max ZZT at IZT and 0.05 μA max IR at VR = 25.2 V ensure low leakage and predictable regulation under light-load conditions.
The device features a cathode-band polarity indicator, Pb-free and RoHS-compliant construction, UL 94 V−0 flammability rating, and is qualified to AEC−Q101 when ordered with SZ prefix - though MM3Z36VST1G itself is the standard industrial-grade variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 35.07 V min to 36.87 V max at 5 mA - defines precise clamping/reference level with ±2.5% tolerance |
| Power Dissipation | 500 mW at 25°C ambient - sets maximum continuous power handling before thermal derating applies |
| Zener Impedance ZZT | 500 Ω max at IZT = 5 mA - indicates regulation stiffness; lower values improve load regulation |
| Reverse Leakage IR | 0.05 μA max at VR = 25.2 V - ensures minimal standby current in voltage-sense or bias circuits |
| Temp Coefficient dVZ/dT | +30.4 mV/°C at IZT = 5 mA - quantifies voltage drift with temperature; critical for stable references |
| Capacitance C | 70 pF max at VR = 0 V, f = 1 MHz - affects high-frequency noise filtering and transient response |
Pinout & Package
SOD−323 surface-mount package: 1.70 mm × 1.25 mm body outline, 0.9 mm height, cathode indicated by polarity band. Designed for reflow soldering at 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point in reverse-bias configuration | Connected to regulated voltage node; polarity band identifies this terminal for correct PCB orientation |
| 2 (Anode) | Zener cathode connection point in reverse-bias configuration | Typically tied to ground or lower-potential rail; completes reverse-bias path for breakdown operation |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±2.5% at 36 V enables accurate voltage threshold detection without external trimming |
| Class 3 ESD rating | >16 kV HBM allows direct integration into handheld and exposed I/O interfaces without added protection |
| Low-profile SOD−323 | 1.7 mm × 1.25 mm × 0.9 mm footprint saves board area in ultra-compact designs like wearables |
| Pb-free & RoHS compliant | Meets global environmental compliance requirements for commercial and industrial end equipment |
Applications
| Battery Protection Circuit | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Monitors Li-ion battery pack voltage during charging to prevent overvoltage damage. IC Role / Device Role / Timing Role: Zener reference element in comparator-based cutoff circuit. Use Value: 36 V nominal breakdown provides headroom above 32.4 V max 9-cell pack voltage while maintaining ±2.5% accuracy. | Use Scenario: Protects downstream USB data lines and power rails from accidental 36 V surge events. IC Role / Device Role / Timing Role: Shunt clamp placed between VBUS and GND. Use Value: 500 mW power rating sustains short-duration transients; 70 pF capacitance avoids signal integrity degradation on 480 Mbps USB 2.0 lines. |
| Industrial Sensor Reference | Programmable Logic Controller Input |
Use Scenario: Provides stable 36 V reference for analog front-end scaling in 4–20 mA loop-powered sensors. IC Role / Device Role / Timing Role: Precision voltage reference for ADC input conditioning. Use Value: +30.4 mV/°C tempco allows predictable calibration offset correction across −40°C to +85°C operating range. | Use Scenario: Clamps field-side digital input voltage to safe levels before optocoupler isolation stage. IC Role / Device Role / Timing Role: Overvoltage protection device on 24 V DC industrial input channel. Use Value: 0.05 μA max leakage at 25.2 V ensures negligible current draw on high-impedance PLC input circuits. |
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-B36,115 | Same 36 V nominal Zener, but SOD-323 package with ±5% tolerance and 300 mW rating | Higher voltage tolerance and lower power limit reduce accuracy and surge-handling capability | Select when cost sensitivity outweighs precision and transient robustness requirements |
| MMSZ5262BT1G | 36 V Zener in SOD-123 package (2.7 mm × 1.4 mm), ±5% tolerance, 500 mW rating | Larger footprint and looser tolerance compromise board density and reference stability | Choose only if SOD-123 is already standardized in legacy layout and tighter tolerance is not required |
Compared with BZX384-B36,115 and MMSZ5262BT1G, MM3Z36VST1G delivers superior voltage accuracy (±2.5% vs. ±5%), identical 500 mW rating versus BZX384's 300 mW, and smallest footprint (SOD−323) - making it optimal for new designs prioritizing precision, space, and transient resilience.
Availability
MM3Z36VST1G is available at Aetrix Electronics and suitable for battery management systems, USB interface protection, industrial sensor signal conditioning, and programmable logic controller inputs requiring stable component supply and consistent parametric performance.
Supply support for MM3Z36VST1G 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 MM3ZxxxST1G series was designed specifically for compact, high-reliability voltage regulation in portable and space-constrained electronics - emphasizing tight Zener tolerance, low-profile packaging, and robust ESD immunity.
FAQ
What is the exact Zener voltage range for MM3Z36VST1G at 5 mA test current?
The MM3Z36VST1G has a guaranteed Zener voltage range of 35.07 V minimum to 36.87 V maximum when tested at IZT = 5 mA and TA = 25°C. This ±2.5% tolerance is tighter than standard Zener diodes and ensures predictable clamping behavior in precision reference circuits. The MM3Z36VST1G datasheet specifies no deviation outside this window under those conditions.
Can MM3Z36VST1G be used in automotive applications?
MM3Z36VST1G is the industrial-grade variant; for automotive use, the SZMM3Z36VST1G version must be selected. That part carries AEC−Q101 qualification, PPAP capability, and enhanced process controls - whereas MM3Z36VST1G is not certified for automotive environments. Always verify qualification status via the full part number prefix before deployment in vehicle systems.
What is the thermal derating behavior of MM3Z36VST1G above 25°C ambient?
MM3Z36VST1G has two thermal derating profiles: 4.0 mW/°C for a 0.72 mm² mounting pad on 38 mm² PCB with 1 in² copper heatsink, and 2.4 mW/°C for standard FR-4 with 1 cm² copper. At 75°C ambient, power dissipation drops to 300 mW (heatsink case) or 180 mW (standard case). These values are defined in the Maximum Ratings table of the MM3Z36VST1G datasheet.
Does MM3Z36VST1G have polarity marking, and how is it identified?
Yes, MM3Z36VST1G uses a cathode-band polarity marking on the SOD−323 package - a visible band adjacent to Pin 1 (cathode). The anode is Pin 2, unmarked. This marking aligns with JEDEC standard SOD−323 orientation and is confirmed in the Mechanical Characteristics section of the MM3Z36VST1G datasheet, page 5.
What is the maximum reverse leakage current for MM3Z36VST1G, and at what voltage is it measured?
The MM3Z36VST1G exhibits a maximum reverse leakage current (IR) of 0.05 μA, measured at a reverse voltage (VR) of 25.2 V and TA = 25°C. This value is specified in the Electrical Characteristics table on page 3 of the MM3Z36VST1G datasheet and reflects minimal standby current in high-impedance bias networks.
MM3Z36VST1G 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):
- 36 V
- Tolerance:
- ±3%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 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
MM3Z36VST1G FAQ
1.How can I place an order for MM3Z36VST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z36VST1G 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 MM3Z36VST1G reliable?
The price and inventory of MM3Z36VST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z36VST1G is usually 5 days.
3.What payment methods are accepted for MM3Z36VST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z36VST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z36VST1G?
MM3Z36VST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z36VST1G 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 MM3Z36VST1G?
For technical support, including MM3Z36VST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z36VST1G requirements.
6.How does Aetrix verify that MM3Z36VST1G is sourced from the original manufacturer or authorized distributors?
All MM3Z36VST1G 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 MM3Z36VST1G meets industry standards.
7.What is the process for return or replacement of MM3Z36VST1G?
All MM3Z36VST1G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z36VST1G, 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 MM3Z36VST1G part is unused and in its original packaging.
Return procedure for MM3Z36VST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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