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onsemi MM3Z16VST1
- Part No.:
- MM3Z16VST1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z16VST1.pdf
- Description:
- DIODE ZENER 16.18V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,478
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Product details
Overview
MM3Z16VST1 from onsemi is a 16 V, ±5% tolerance Zener diode in SOD−323 package with 200 mW power rating, 80 Ω dynamic impedance at 5 mA, and 0.05 μA reverse leakage at 12.8 V. It provides precision voltage regulation for low-power biasing and reference applications in space-constrained designs.
For engineers reviewing the MM3Z16VST1 datasheet, pinout, applications, or equivalent options, key selection criteria include its tight Zener voltage tolerance, low leakage, ESD robustness (>16 kV HBM), and compatibility with high-density PCB layouts requiring minimal footprint.
Technical Context
The MM3Z16VST1 operates as a two-terminal voltage reference device, conducting in reverse breakdown to clamp or regulate voltage across a load. Its Zener voltage is specified at 5 mA test current (IZT), with temperature coefficient of +10.4 mV/°C and capacitance of 105 pF at 0 V bias and 1 MHz.
It features a cathode-anode polarity marking, Pb-free plating options, UL 94 V-0 flammability rating, and is rated for junction temperatures from −65°C to +150°C. Thermal resistance is 635°C/W, supporting stable operation under derated ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.85 V to 16.51 V at IZT = 5 mA - defines precise clamping threshold for reference or protection circuits |
| Power Dissipation | 200 mW at TA = 25°C - sets maximum continuous power handling on FR-5 board |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 5 mA - determines voltage regulation stability under varying load current |
| Reverse Leakage (IR) | 0.05 μA max at VR = 12.8 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Capacitance (C) | 105 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 during assembly and operation in portable electronics |
| Package | SOD−323 (Case 477) - 1.7 mm × 1.25 mm × 0.9 mm footprint ideal for ultra-compact PCBs |
Pinout & Package
SOD−323 surface-mount package with cathode marked by band; terminals are non-polarized in function but polarity-critical for correct reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-bias terminal | Connected to higher potential node to enable Zener conduction; polarity band identifies this terminal |
| 2 (Anode) | Reference/ground terminal | Typically tied to circuit ground or lower potential; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener tolerance | ±5% VZ at 25°C - reduces calibration overhead in precision analog references |
| Low-profile SOD−323 | 0.9 mm height - enables stacking under shields or placement near fine-pitch ICs without interference |
| High ESD immunity | >16 kV HBM - eliminates need for external ESD protection in handheld and wearable designs |
| Pb-free option | MM3Z16VST1G suffix - supports RoHS-compliant manufacturing without performance trade-offs |
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 for comparator input, providing stable 16 V threshold independent of supply drift. Use Value: Enables accurate state-of-charge estimation using a single passive component with no active biasing required. | Use Scenario: Protecting USB-powered microcontroller I/O pins from transient overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Shunt regulator clamping rail to 16 V during surge, diverting excess current away from sensitive logic. Use Value: Prevents latch-up and damage without adding series resistance that would degrade signal rise time. |
| RF Front-End Bias Network | Industrial Sensor Signal Conditioning |
Use Scenario: Providing stable DC bias to GaAs FET amplifiers in Bluetooth LE modules where board area is constrained. IC Role / Device Role / Timing Role: Low-noise voltage reference in bias tee configuration, decoupled via capacitor to minimize RF coupling. Use Value: Maintains amplifier linearity and gain stability while occupying <1.8 mm² PCB area-critical for miniaturized radios. | Use Scenario: Setting reference voltage for 12-bit ADC in factory-floor temperature sensor nodes operating at 85°C ambient. IC Role / Device Role / Timing Role: Temperature-stable Zener source (TC = +10.4 mV/°C) for ratiometric scaling of thermistor bridge output. Use Value: Delivers <0.5% full-scale error contribution over −40°C to +85°C without active compensation circuitry. |
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-B16,115 | Same 16 V nominal Zener, ±5% tolerance, but SOD-323 package with 300 mW rating and 40 Ω ZZT | Higher power margin allows use in higher-current shunt roles; slightly lower dynamic impedance improves regulation under load variation | Select when >200 mW dissipation headroom or sub-50 Ω impedance is required; verify thermal layout for 300 mW |
| MMSZ5245B-TP | 16 V Zener, ±5%, but in SOD-123 package (2.7 mm × 1.6 mm); 500 mW rating, 17 Ω ZZT, 100 nA IR | Larger footprint but superior leakage and impedance; not suitable for ultra-dense layouts where SOD-323 is mandatory | Choose for improved regulation accuracy and lower leakage where board space permits larger package |
Compared with BZX384-B16,115 and MMSZ5245B-TP, the MM3Z16VST1 offers the smallest footprint and sufficient regulation performance for low-current reference and clamping, making it optimal for miniaturized consumer electronics where area is the dominant constraint.
Availability
MM3Z16VST1 is available at Aetrix Electronics and suitable for battery monitoring, portable device protection, RF biasing, and industrial sensor conditioning requiring stable component supply and consistent parametric performance across production lots.
Supply support for MM3Z16VST1 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM3Z16VST1 belongs to the MM3ZxxxST1 series of tight-tolerance Zener regulators designed specifically for space-constrained, low-power voltage reference and overvoltage protection in portable and high-density electronics.
FAQ
What is the Zener voltage tolerance of the MM3Z16VST1?
The MM3Z16VST1 has a Zener voltage tolerance of ±5% at 25°C, with a specified range of 15.85 V to 16.51 V at 5 mA test current. This tight tolerance enables reliable use in precision reference applications without post-production trimming. The MM3Z16VST1 maintains this specification across its qualified operating temperature range and is validated per onsemi's production test flow.
Does the MM3Z16VST1 support Pb-free soldering processes?
Yes, the MM3Z16VST1 is available in Pb-free packaging, indicated by the "G" suffix (MM3Z16VST1G). It complies with JEDEC J-STD-020 moisture sensitivity level 1 and supports reflow profiles up to 260°C for 10 seconds. The MM3Z16VST1G uses Sn-only plating and meets RoHS Directive 2011/65/EU requirements without performance degradation.
What is the maximum reverse leakage current for the MM3Z16VST1?
The MM3Z16VST1 exhibits a maximum reverse leakage current of 0.05 μA at VR = 12.8 V and TA = 25°C. This ultra-low leakage supports high-impedance bias networks and extends battery life in always-on sensor nodes. The MM3Z16VST1 leakage remains below 1 μA up to 80% of nominal Zener voltage across its full operating temperature range.
Can the MM3Z16VST1 be used in high-frequency applications?
The MM3Z16VST1 has a typical capacitance of 105 pF at 0 V bias and 1 MHz, making it suitable for low-to-moderate frequency clamping and biasing (up to ~10 MHz). For RF applications above 100 MHz, its capacitance may introduce unwanted loading; in such cases, the MM3Z16VST1 should be used with careful layout isolation and decoupling. The MM3Z16VST1's low profile helps minimize parasitic inductance in compact layouts.
How does the temperature coefficient affect the MM3Z16VST1's performance?
The MM3Z16VST1 has a positive temperature coefficient of +10.4 mV/°C at IZT = 5 mA, meaning its Zener voltage increases linearly with junction temperature. This behavior is well-characterized and predictable, enabling compensation in temperature-sensitive references. The MM3Z16VST1's TC supports stable operation across −65°C to +150°C, with minimal hysteresis or drift after thermal cycling.
MM3Z16VST1 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):
- 16.18 V
- Tolerance:
- ±2%
- 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
MM3Z16VST1 FAQ
1.How can I place an order for MM3Z16VST1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z16VST1 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 MM3Z16VST1 reliable?
The price and inventory of MM3Z16VST1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z16VST1 is usually 5 days.
3.What payment methods are accepted for MM3Z16VST1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z16VST1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z16VST1?
MM3Z16VST1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z16VST1 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 MM3Z16VST1?
For technical support, including MM3Z16VST1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z16VST1 requirements.
6.How does Aetrix verify that MM3Z16VST1 is sourced from the original manufacturer or authorized distributors?
All MM3Z16VST1 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 MM3Z16VST1 meets industry standards.
7.What is the process for return or replacement of MM3Z16VST1?
All MM3Z16VST1 units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z16VST1, 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 MM3Z16VST1 part is unused and in its original packaging.
Return procedure for MM3Z16VST1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM3Z16VST1 Tags
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