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onsemi MM3Z2V4ST1G
- Part No.:
- MM3Z2V4ST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z2V4ST1G.pdf
- Description:
- DIODE ZENER 2.4V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:11,762
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Product details
Overview
MM3Z2V4ST1G from onsemi is a 2.4 V ±4.2% Zener diode in SOD−323 package, rated for 200 mW steady-state power dissipation, with 1000 Ω maximum dynamic impedance at 5 mA test current and 1.0 µA reverse leakage at 1.0 V. It provides precision voltage regulation in space-constrained portable electronics such as smartphone power rails and USB interface protection.
For engineers reviewing the MM3Z2V4ST1G datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 2.43–2.63 V Zener tolerance at 5 mA, Class 3 ESD rating (>16 kV HBM), Pb-free SOD−323 footprint, and thermal resistance of 635 °C/W - all critical for low-power, high-density PCB designs.
Technical Context
This Zener regulator operates in reverse breakdown to clamp voltage transients and stabilize reference nodes. Its 2.4 V nominal Zener voltage is specified at IZT = 5 mA, with temperature coefficient of −3.5 mV/°C and maximum capacitance of 450 pF at 0 V bias and 1 MHz.
The device exhibits 1000 Ω dynamic impedance (ZZT) at 5 mA and 100 Ω impedance (ZZK) at 0.5 mA, supporting stable regulation across light-to-moderate load conditions. Junction temperature range spans −65 °C to +150 °C, and soldering tolerance allows 260 °C for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.43–2.63 V at 5 mA - defines precise clamping threshold for 2.4 V rail protection |
| Power Dissipation (PD) | 200 mW at 25 °C - limits continuous energy handling in compact SOD−323 footprint |
| Zener Impedance (ZZT) | 1000 Ω max at 5 mA - determines regulation stiffness under dynamic load changes |
| Reverse Leakage (IR) | 1.0 µA max at 1.0 V - ensures minimal standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV HBM) - protects against human-body electrostatic discharge during handling and assembly |
| Capacitance (C) | 450 pF max at 0 V, 1 MHz - impacts high-frequency noise filtering capability in signal lines |
| Package | SOD−323 (Case 477) - 1.7 × 1.25 × 0.9 mm surface-mount outline enabling ultra-dense layouts |
Pinout & Package
SOD−323 package with cathode indicated by polarity band; body dimensions 1.7 mm × 1.25 mm × 0.9 mm; weight 4.507 mg/unit; Pb-free plating (Sn only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential reference; completes conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener Tolerance | ±4.2% (2.43–2.63 V at 5 mA) - enables accurate voltage clamping without trimming |
| Low Profile Height | 0.9 mm max - supports thin-profile assemblies in smartphones and wearables |
| High ESD Robustness | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in I/O rails |
| Pb-Free Construction | Sn-only lead finish - complies with RoHS and JEDEC J-STD-020 reflow requirements |
| Thermal Stability | −3.5 mV/°C tempco - predictable drift behavior over industrial temperature range |
Applications
| USB Data Line Protection | Smartphone Battery Monitor Reference |
|---|---|
|
Use Scenario: Clamping transient spikes on USB D+/D− lines during hot-plug events or ESD strikes. IC Role / Device Role / Timing Role: Zener voltage clamp placed between data line and ground to limit excursion beyond 2.4 V. Use Value: Leverages 450 pF capacitance and 1.0 µA leakage to avoid signal integrity degradation while meeting IEC 61000-4-2 Level 4. |
Use Scenario: Providing stable 2.4 V reference for fuel-gauge ADC inputs in lithium-ion battery management. IC Role / Device Role / Timing Role: Precision shunt reference sourcing <1 µA into high-impedance ADC input. Use Value: Tight 2.43–2.63 V tolerance ensures <1% full-scale error in battery voltage reporting across temperature. |
| Low-Power IoT Sensor Biasing | Wearable Heart-Rate Monitor Front-End |
|
Use Scenario: Generating clean bias voltage for MEMS accelerometer analog front-end in BLE-enabled sensors. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying 2.4 V to op-amp supply rail. Use Value: 1000 Ω ZZT and −3.5 mV/°C tempco maintain <5 mV drift over −20 to +70 °C operating range. |
Use Scenario: Protecting photodiode amplifier input from overvoltage during LED pulse drive in optical PPG circuits. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting input to 2.4 V during 100 ns transients. Use Value: 200 mW rating and SOD−323 thermal mass absorb single-event surges without parametric shift. |
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-B2V4,115 | 2.4 V ±5%, 300 mW, SOD-323, 600 Ω ZZT @ 5 mA | Higher power rating but looser tolerance; higher ZZT reduces regulation accuracy | Prefer when higher surge energy absorption is required and ±5% tolerance is acceptable |
| MMSZ4678T1G | 2.4 V ±5%, 500 mW, SOD-123, 1500 Ω ZZT @ 10 mA | Larger SOD-123 package; higher power but worse impedance and looser tolerance | Choose only if board layout allows larger footprint and 500 mW dissipation is needed |
Compared with BZX384-B2V4,115 and MMSZ4678T1G, the MM3Z2V4ST1G delivers tighter voltage tolerance and lower dynamic impedance in the smallest standard SOD−323 footprint - making it optimal for miniaturized, precision-clamping applications where space and accuracy are constrained.
Availability
MM3Z2V4ST1G is available at Aetrix Electronics and suitable for cellular phones, hand-held portables, and high-density PC boards requiring stable component supply and RoHS-compliant packaging.
Supply support for MM3Z2V4ST1G 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud computing, medical, and IoT applications.
The MM3Z2V4ST1G belongs to onsemi's MM3ZxxxST1 series of tight-tolerance Zener regulators, designed specifically for voltage clamping and reference generation in space-constrained, low-power portable electronics.
FAQ
What is the Zener voltage tolerance of MM3Z2V4ST1G?
The MM3Z2V4ST1G has a Zener voltage range of 2.43 V to 2.63 V at 5 mA test current, corresponding to ±4.2% tolerance around the nominal 2.4 V rating. This tight tolerance is confirmed in the Electrical Characteristics table on page 2 of the official datasheet and enables reliable clamping without post-production calibration. The MM3Z2V4ST1G achieves this via process-controlled doping and laser trimming during manufacturing.
Is MM3Z2V4ST1G RoHS-compliant and Pb-free?
Yes, MM3Z2V4ST1G is explicitly designated as Pb-free in the Ordering Information section, with Sn-only plating on leads. It meets RoHS Directive 2011/65/EU and is compatible with standard lead-free reflow profiles per JEDEC J-STD-020. The "G" suffix in MM3Z2V4ST1G confirms compliance, and the device carries UL 94 V-0 flammability rating per mechanical specifications.
What is the maximum power dissipation of MM3Z2V4ST1G at 70°C ambient?
At 70°C ambient, MM3Z2V4ST1G derates linearly from its 200 mW rating at 25°C using the 1.5 mW/°C derating factor. The calculation yields 200 mW − (70 − 25) × 1.5 mW = 132.5 mW. This value is derived directly from the Maximum Ratings table and applies to FR-5 board mounting per Note 1 - critical for thermal design in sealed handheld enclosures.
Does MM3Z2V4ST1G have a specified junction-to-case thermal resistance?
No, the MM3Z2V4ST1G datasheet specifies only junction-to-ambient thermal resistance (RJA = 635 °C/W) for FR-5 board mounting; junction-to-case (RJC) is not provided. Designers must rely on RJA and board-level copper area to estimate temperature rise. The absence of RJC reflects the SOD−323 package's thermal path being dominated by PCB conduction rather than case interface.
What is the forward voltage of MM3Z2V4ST1G at 10 mA?
The forward voltage of MM3Z2V4ST1G is guaranteed ≤0.9 V at 10 mA forward current, as stated in the Electrical Characteristics summary and verified across temperature. This low VF ensures minimal power loss when used in series-configured protection schemes or bidirectional clamping configurations, and supports compatibility with 1.8 V and 3.3 V logic interfaces.
MM3Z2V4ST1G 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):
- 2.4 V
- Tolerance:
- ±4%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 120 µA @ 1 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
MM3Z2V4ST1G FAQ
1.How can I place an order for MM3Z2V4ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z2V4ST1G 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 MM3Z2V4ST1G reliable?
The price and inventory of MM3Z2V4ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z2V4ST1G is usually 5 days.
3.What payment methods are accepted for MM3Z2V4ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z2V4ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z2V4ST1G?
MM3Z2V4ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z2V4ST1G 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 MM3Z2V4ST1G?
For technical support, including MM3Z2V4ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z2V4ST1G requirements.
6.How does Aetrix verify that MM3Z2V4ST1G is sourced from the original manufacturer or authorized distributors?
All MM3Z2V4ST1G 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 MM3Z2V4ST1G meets industry standards.
7.What is the process for return or replacement of MM3Z2V4ST1G?
All MM3Z2V4ST1G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z2V4ST1G, 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 MM3Z2V4ST1G part is unused and in its original packaging.
Return procedure for MM3Z2V4ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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