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onsemi MM3Z27VST1G
- Part No.:
- MM3Z27VST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z27VST1G.pdf
- Description:
- DIODE ZENER 26.86V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:19,286
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Product details
Overview
MM3Z27VST1G from onsemi is a 27 V ±3.9% Zener diode in SOD−323 package, rated for 500 mW steady-state power dissipation, with 300 Ω max dynamic impedance at 5 mA test current and 0.05 μA reverse leakage at 21.4 V. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM3Z27VST1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±3.9%), thermal resistance (250 °C/W with heatsink), ESD rating (>16 kV HBM), low capacitance (70 pF), and AEC−Q101 qualification for automotive use.
Technical Context
This device operates as a two-terminal voltage reference by maintaining a stable reverse breakdown voltage across its cathode–anode terminals under controlled current conditions. Its 27 V nominal Zener voltage is specified at IZT = 5 mA, with temperature coefficient of +21.4 mV/°C and maximum Zener impedance of 300 Ω at that current.
The SOD−323 package enables high-density PCB placement with 1.7 mm × 1.25 mm footprint and 0.9 mm height, while its Pb−free, RoHS-compliant construction supports modern assembly processes. Thermal derating follows 4.0 mW/°C above 25°C on a 38 mm² copper heatsink board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 26.19 V min / 27.53 V max at 5 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (PD) | 500 mW max on FR-4 with 38 mm² copper heatsink - sets absolute thermal limit for continuous operation |
| Zener Impedance (ZZT) | 300 Ω max at IZT = 5 mA - determines voltage regulation stability under load transients |
| Reverse Leakage (IR) | 0.05 μA max at VR = 21.4 V - ensures minimal standby current in voltage-sense or bias networks |
| Capacitance (C) | 70 pF max at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| ESD Rating | Class 3 (>16 kV) per HBM - enables robust handling in manual assembly and field-replaceable modules |
| Temperature Coefficient | +21.4 mV/°C at IZT = 5 mA - quantifies voltage drift over operating temperature range |
Pinout & Package
SOD−323 surface-mount package: 1.70 mm × 1.25 mm × 0.85 mm body, cathode indicated by polarity band, anode unmarked. Mounting position unrestricted; compatible with reflow soldering up to 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased Zener terminal | Connected to regulated voltage node; polarity band identifies this terminal for correct orientation during placement |
| 2 (Anode) | Reference/ground terminal | Typically tied to system ground or lower-potential rail; completes current path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±3.9% (26.19 V – 27.53 V) at 5 mA - reduces need for post-regulation trimming in precision references |
| Low-profile SOD−323 package | 0.9 mm height, 1.7 mm × 1.25 mm footprint - enables integration into ultra-thin handheld and wearable PCBs |
| High ESD robustness | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in consumer interface circuits |
| AEC−Q101 qualification | Qualified for automotive applications with PPAP capability - supports use in infotainment and body control modules |
| Pb−free and RoHS compliance | Sn-only or Pb−Sn plating, UL 94 V−0 flammability - meets global environmental and safety manufacturing requirements |
Applications
| Smartphone Power Management | Automotive Infotainment Biasing |
|---|---|
Use Scenario: Regulating reference voltage for battery fuel gauges and PMIC feedback loops in compact smartphone mainboards. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing stable 27 V reference for ADC calibration and overvoltage detection thresholds. Use Value: Tight 3.9% tolerance and low 70 pF capacitance prevent measurement error and preserve signal integrity near RF sections. | Use Scenario: Supplying stable bias voltage to audio amplifier ICs and display driver logic in vehicle head units. IC Role / Device Role / Timing Role: Zener clamp protecting sensitive analog inputs against load-dump transients and supply ripple. Use Value: AEC−Q101 qualification and 16 kV HBM ESD rating ensure reliability in harsh automotive electrical environments. |
| High-Density PC Board Protection | Industrial Sensor Signal Conditioning |
Use Scenario: Overvoltage clamping on USB-C power delivery lines and PCIe auxiliary rails in server motherboards. IC Role / Device Role / Timing Role: Shunt regulator absorbing transient energy during hot-plug events and ESD strikes. Use Value: 500 mW power rating and 300 Ω Zener impedance enable effective clamping without thermal runaway in confined layouts. | Use Scenario: Providing precise excitation voltage for bridge-based pressure sensors in factory automation equipment. IC Role / Device Role / Timing Role: Low-drift voltage reference source with +21.4 mV/°C tempco compensated via system software calibration. Use Value: Predictable temperature coefficient allows accurate compensation algorithms, improving long-term sensor accuracy. |
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-B27,115 | Same 27 V nominal Zener, but ±5% tolerance (vs. ±3.9%), 300 mW PD, SOD-323 package, no AEC-Q101 qualification | Lacks automotive qualification; suitable for commercial-grade industrial or computing applications only | Select when cost sensitivity outweighs automotive compliance and tighter tolerance requirements |
| SZMM3Z27VST1G | Identical electrical specs and package; differs only in SZ prefix indicating AEC-Q101 compliance with PPAP documentation support | Designed specifically for automotive OEMs requiring full PPAP submission and change control traceability | Select when production requires certified automotive-grade sourcing and documented process controls |
Compared with MM3Z27VST1G, BZX384-B27 offers lower cost but looser tolerance and no automotive qualification, while SZMM3Z27VST1G delivers identical performance with formal PPAP support-making it the preferred choice for Tier 1 automotive programs where documentation rigor is mandatory.
Availability
MM3Z27VST1G is available at Aetrix Electronics and suitable for smartphone power management, automotive infotainment biasing, and high-density PC board protection requiring stable component supply across prototyping, NPI, and volume production phases.
Supply support for MM3Z27VST1G 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 is part of onsemi's precision Zener voltage regulator portfolio, engineered for space-constrained, high-reliability applications demanding tight tolerance, low capacitance, and robust ESD performance in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of MM3Z27VST1G?
The MM3Z27VST1G has a Zener voltage tolerance of ±3.9%, with a minimum value of 26.19 V and maximum of 27.53 V, both measured at a test current of 5 mA. This tight tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet. The MM3Z27VST1G achieves this specification using precision process control and screening, making it suitable for applications requiring stable reference voltages without post-assembly calibration.
Is MM3Z27VST1G qualified for automotive use?
Yes, MM3Z27VST1G is not automotive-qualified, but its variant SZMM3Z27VST1G is AEC−Q101 qualified and PPAP capable. The MM3Z27VST1G itself shares identical electrical and mechanical specifications, differing only in traceability and documentation scope. For automotive production, engineers must specify the SZ-prefix version; the MM3Z27VST1G remains appropriate for commercial and industrial applications where AEC−Q101 is not mandated.
What is the maximum power dissipation of MM3Z27VST1G?
The MM3Z27VST1G has a maximum steady-state power dissipation of 500 mW when mounted on an FR−4 board with a 38 mm² copper heatsink area. Its thermal resistance is 250 °C/W under those conditions, and it derates linearly at 4.0 mW/°C above 25°C ambient. This rating is defined in the Maximum Ratings table on page 2 of the onsemi datasheet and must be respected to avoid junction overheating and parametric shift in the MM3Z27VST1G.
Does MM3Z27VST1G have ESD protection?
Yes, MM3Z27VST1G features Class 3 ESD protection per the Human Body Model (HBM), rated at >16 kV. This level of robustness is built into the device structure and verified during qualification testing. The ESD rating is explicitly stated in the Specification Features section of the onsemi datasheet and contributes to the MM3Z27VST1G's suitability for handheld and field-serviceable electronics where handling-induced discharge is a concern.
What package type does MM3Z27VST1G use?
MM3Z27VST1G uses the SOD−323 surface-mount package (Case 477, Style 1), measuring 1.70 mm × 1.25 mm × 0.85 mm with a cathode polarity band on terminal 1. This package is RoHS compliant, Pb−free, and rated for reflow soldering up to 260°C for 10 seconds. The mechanical dimensions and marking diagram are detailed in the "Mechanical Case Outline" section on page 5 of the onsemi datasheet for MM3Z27VST1G.
MM3Z27VST1G 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):
- 26.86 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 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
MM3Z27VST1G FAQ
1.How can I place an order for MM3Z27VST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z27VST1G 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 MM3Z27VST1G reliable?
The price and inventory of MM3Z27VST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z27VST1G is usually 5 days.
3.What payment methods are accepted for MM3Z27VST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z27VST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z27VST1G?
MM3Z27VST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z27VST1G 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 MM3Z27VST1G?
For technical support, including MM3Z27VST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z27VST1G requirements.
6.How does Aetrix verify that MM3Z27VST1G is sourced from the original manufacturer or authorized distributors?
All MM3Z27VST1G 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 MM3Z27VST1G meets industry standards.
7.What is the process for return or replacement of MM3Z27VST1G?
All MM3Z27VST1G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z27VST1G, 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 MM3Z27VST1G part is unused and in its original packaging.
Return procedure for MM3Z27VST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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