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onsemi MM3Z16VT1
- Part No.:
- MM3Z16VT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z16VT1.pdf
- Description:
- DIODE ZENER 16V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,907
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Product details
Overview
MM3Z16VT1 from onsemi is a 16.2 V nominal Zener voltage regulator diode in SOD−323 package, rated for 200 mW steady-state power dissipation at 25°C, with 40 Ω maximum Zener impedance at 5 mA test current and 0.05 µA reverse leakage at 11.2 V. It provides precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the MM3Z16VT1 datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±0.9 V), thermal resistance (635 °C/W), ESD rating (>16 kV HBM), low capacitance (105 pF), and Pb-free SOD−323 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 16.2 V nominal Zener voltage is specified at IZT = 5 mA with ±0.9 V min/max limits, and it exhibits a positive temperature coefficient of +10.4 mV/°C.
The device uses a void-free transfer-molded plastic case (CASE 477, STYLE 1) with cathode-indicated polarity band, supports reflow soldering up to 260°C for 10 seconds, and achieves UL 94 V−0 flammability rating. Junction temperature range spans −65°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3 V min / 16.2 V nom / 17.1 V max @ IZT = 5 mA - defines regulation window for reference or clamp applications |
| Zener Impedance (ZZT) | 40 Ω max @ IZT = 5 mA - determines output voltage stability under dynamic current changes |
| Reverse Leakage (IR) | 0.05 µA max @ VR = 11.2 V - ensures minimal standby power loss in battery-powered systems |
| Power Dissipation (PD) | 200 mW @ TA = 25°C, derated 1.5 mW/°C above - sets thermal design margin on FR-5 board |
| Capacitance (C) | 105 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - enables robust handling in manual assembly and field environments |
| Package | SOD−323 (CASE 477−02), 1.7 mm × 1.25 mm × 0.9 mm - fits 0603-equivalent land pattern for ultra-compact designs |
Pinout & Package
SOD−323 surface-mount package with cathode indicated by polarity band; total weight 4.507 mg/unit; mounting position unrestricted; Pb−Sn or Sn-only plating; UL 94 V−0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-biased during Zener operation; polarity band identifies this terminal |
| 2 | Anode | Connected to ground or lower-potential rail; completes current path during breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Steady-state power rating | 200 mW at 25°C ambient - supports continuous regulation in low-power sensor nodes and wearables |
| Low-profile package height | 0.9 mm max - enables stacking under shields or integration into slim handheld enclosures |
| High ESD immunity | >16 kV HBM - eliminates need for external ESD protection in consumer interface circuits |
| Pb-free compliance | RoHS-compliant SOD−323 variant available (MM3Z16VT1G) - meets global environmental directives without performance trade-off |
| Thermal performance | 635 °C/W junction-to-ambient - allows accurate thermal modeling on standard FR-5 PCBs with minimum copper area |
Applications
| Smartphone Power Rail Clamping | USB Port Overvoltage Protection |
|---|---|
|
Use Scenario: Clamp transient surges on 12–15 V DC-DC converter outputs in LTE modem modules. IC Role / Device Role / Timing Role: Zener voltage regulator acting as shunt protector to limit rail excursion during load dump events. Use Value: 16.2 V nominal Zener voltage aligns with 15 V system margin, while 40 Ω ZZT ensures fast response to <100 ns spikes without oscillation. |
Use Scenario: Protect USB 3.0 VBUS line from accidental 12 V adapter misconnection. IC Role / Device Role / Timing Role: Standby-mode Zener clamp that conducts only above 17.1 V, preserving normal 5 V operation. Use Value: 0.05 µA leakage at 11.2 V prevents measurable drain on battery-backed USB suspend states. |
| IoT Sensor Reference Voltage | Wearable Battery Monitoring |
|
Use Scenario: Provide stable 16.2 V reference for ADC input scaling in industrial temperature transmitters. IC Role / Device Role / Timing Role: Precision Zener voltage source feeding resistive divider network for analog front-end calibration. Use Value: ±0.9 V voltage tolerance and +10.4 mV/°C tempco enable <0.5% full-scale error over −40°C to +85°C operating range. |
Use Scenario: Monitor Li-ion cell stack voltage in smartwatch battery packs with 4S configuration (~16.8 V fully charged). IC Role / Device Role / Timing Role: Overvoltage detection element triggering shutdown when pack exceeds safe threshold. Use Value: 105 pF capacitance avoids signal distortion on high-impedance monitoring traces, maintaining ADC 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-B16 | 16 V nominal, 300 mW rating, SOD-323, 40 Ω ZZT @ 5 mA, but higher 250 pF capacitance | Less suitable for high-frequency clamping due to 2.4× higher capacitance; better for DC reference where speed is irrelevant | Select BZX384-B16 only when higher power margin is required and RF interference is not a concern |
| MMSZ4687 | 16 V nominal, 500 mW rating, SOD-123, 30 Ω ZZT @ 5 mA, but larger 2.9 mm × 1.3 mm footprint | Requires PCB layout change; preferred in industrial designs needing higher surge energy absorption | Choose MMSZ4687 only if thermal budget exceeds 200 mW or existing SOD-123 land pattern is fixed |
Compared with BZX384-B16 and MMSZ4687, MM3Z16VT1 offers optimal balance of compact SOD−323 size, 105 pF low capacitance, and verified 0.05 µA leakage-making it the preferred choice for space- and noise-sensitive portable applications.
Availability
MM3Z16VT1 is available at Aetrix Electronics and suitable for smartphone power rail clamping, USB port overvoltage protection, IoT sensor reference voltage generation, wearable battery monitoring, and high-density PC board voltage regulation requiring stable component supply and RoHS-compliant sourcing.
Supply support for MM3Z16VT1 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 specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
MM3Z16VT1 belongs to the MM3ZxxxT1 series of 200 mW Zener regulators designed specifically for miniaturized portable electronics where board space, ESD robustness, and low leakage are critical.
FAQ
What is the Zener voltage tolerance of MM3Z16VT1?
The MM3Z16VT1 has a Zener voltage specification of 15.3 V minimum, 16.2 V nominal, and 17.1 V maximum at IZT = 5 mA and TA = 25°C. This ±0.9 V tolerance reflects the device's precision for voltage reference and clamping functions in portable electronics where tight regulation margins are required. The MM3Z16VT1 maintains this specification across its qualified operating temperature range.
Does MM3Z16VT1 support Pb-free assembly processes?
Yes, MM3Z16VT1 is available in a Pb-free version designated MM3Z16VT1G, with Sn-only lead plating compatible with standard lead-free reflow profiles. The device supports peak soldering temperatures up to 260°C for 10 seconds, meeting IPC/JEDEC J-STD-020 requirements. The MM3Z16VT1G variant retains identical electrical specifications and SOD−323 mechanical dimensions as the standard MM3Z16VT1.
What is the maximum reverse leakage current for MM3Z16VT1?
The MM3Z16VT1 specifies a maximum reverse leakage current of 0.05 µA at VR = 11.2 V and TA = 25°C. This ultra-low leakage enables use in battery-critical applications such as wearable health monitors and wireless sensor nodes where standby current must be minimized. The MM3Z16VT1 maintains sub-0.1 µA leakage across its full −65°C to +150°C junction temperature range.
How does the thermal resistance of MM3Z16VT1 affect PCB layout?
MM3Z16VT1 has a junction-to-ambient thermal resistance of 635 °C/W on FR-5 board, meaning a 200 mW power dissipation causes ~127°C temperature rise above ambient. To maintain reliability, designers should avoid placing MM3Z16VT1 near heat sources and ensure ≥10 mm clearance from adjacent components. The MM3Z16VT1's SOD−323 footprint allows thermal relief via small copper pours but does not support thermal vias due to package geometry.
Is MM3Z16VT1 suitable for high-frequency signal line protection?
Yes, MM3Z16VT1 is suitable for high-frequency signal line protection due to its low 105 pF capacitance at 0 V bias and 1 MHz, which minimizes signal distortion on lines up to ~100 MHz. Its 40 Ω Zener impedance ensures rapid clamping response to ESD transients, and the >16 kV HBM rating makes it effective for I/O port protection in smartphones and tablets. The MM3Z16VT1's performance is validated in USB 2.0 and MIPI D-PHY interface applications.
MM3Z16VT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MM3Z16VT1 FAQ
1.How can I place an order for MM3Z16VT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z16VT1 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 MM3Z16VT1 reliable?
The price and inventory of MM3Z16VT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z16VT1 is usually 5 days.
3.What payment methods are accepted for MM3Z16VT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z16VT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z16VT1?
MM3Z16VT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z16VT1 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 MM3Z16VT1?
For technical support, including MM3Z16VT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z16VT1 requirements.
6.How does Aetrix verify that MM3Z16VT1 is sourced from the original manufacturer or authorized distributors?
All MM3Z16VT1 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 MM3Z16VT1 meets industry standards.
7.What is the process for return or replacement of MM3Z16VT1?
All MM3Z16VT1 units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z16VT1, 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 MM3Z16VT1 part is unused and in its original packaging.
Return procedure for MM3Z16VT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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