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onsemi NZ9F16VST5G
- Part No.:
- NZ9F16VST5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
NZ9F16VST5G.pdf
- Description:
- DIODE ZENER 16.18V 250MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:7,068
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Product details
Overview
NZ9F16VST5G from onsemi is a 250 mW, 16 V nominal Zener voltage regulator diode in SOD-923 package, designed for precision voltage clamping and overvoltage protection in space-constrained portable electronics. It delivers tight Zener tolerance (±4.2% at 12 mA), low dynamic impedance (50 Ω max at IZT = 5 mA), and Class 3 ESD robustness (>16 kV HBM), enabling reliable operation in cellular phone power rails and high-density PCBs.
For engineers reviewing the NZ9F16VST5G datasheet, pinout, applications, or equivalent options, key selection criteria include its 15.85–16.51 V Zener range at 5 mA, 250 mW steady-state dissipation with 2.0 mW/°C derating above 25 °C, SOD-923 mechanical footprint (1.00 × 0.60 × 0.37 mm), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal, silicon planar Zener diode with reverse-biased breakdown regulation. Its electrical behavior is defined by specified test current (IZT = 5 mA), maximum Zener impedance (ZZT = 50 Ω), and temperature coefficient (+10.4 mV/°C) - all measured under controlled thermal conditions (TA = 25 °C).
The SOD-923 package enables surface-mount integration with MSL 1 reflow compatibility (peak 260 °C), void-free thermosetting epoxy body (UL 94 V-0), and 100% matte tin lead finish. Cathode identification is marked via polarity band per Style 1 mechanical outline.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15.85–16.51 V at IZT = 5 mA - defines clamping threshold for overvoltage protection circuits |
| Power Dissipation PD | 250 mW @ TA = 25 °C - sets maximum continuous thermal load on FR-5 board |
| Zener Impedance ZZT | 50 Ω max @ IZT = 5 mA - determines regulation stability under varying load currents |
| ESD Rating | Class 3 (>16 kV HBM) - ensures survivability during handling and board assembly |
| Package | SOD-923 (1.00 × 0.60 × 0.37 mm) - supports ultra-dense layout in mobile and wearable PCBs |
| Temp Coefficient dVZ/dT | +10.4 mV/°C @ IZT = 5 mA - quantifies voltage drift across operating temperature range |
| Capacitance C | 65 pF max @ VR = 0, f = 1 MHz - impacts high-frequency noise filtering capability |
Pinout & Package
SOD-923 is a 2-pin surface-mount package with cathode identified by a polarity band (Pin 1) and anode as Pin 2. Mounting position is unrestricted; qualified for reflow up to 260 °C and meets MSL 1 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded) | Cathode | Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs |
| 2 | Anode | Connected to reference or ground potential; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±4.2% at 5 mA - reduces need for post-production trimming in voltage reference designs |
| Low-profile packaging | 0.37 mm height - enables stacking under shields or placement beneath connectors in slim devices |
| AEC-Q101 qualification | Validated for automotive ambient temperature range (−65 to +150 °C) - supports infotainment and ADAS subsystems |
| Pb-Free construction | RoHS-compliant 100% matte Sn finish - satisfies global environmental compliance without solderability trade-offs |
Applications
| Smartphone Power Rail Protection | USB-C Port Overvoltage Clamp |
|---|---|
Use Scenario: Protecting 3.3 V/5 V system rails from transient surges during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Two-terminal shunt regulator clamping voltage spikes before they reach PMIC or SoC inputs. Use Value: Prevents latch-up or permanent damage using NZ9F16VST5G's 16 V breakdown and 250 mW surge-handling capacity. | Use Scenario: Safeguarding USB-C controller I/O pins against accidental 12 V or 20 V misconnection in multi-source charging systems. IC Role / Device Role / Timing Role: Standalone Zener clamp placed between CC line and ground to limit voltage excursion. Use Value: Leverages NZ9F16VST5G's 65 pF capacitance and Class 3 ESD rating to suppress fast transients without signal integrity loss. |
| Automotive Cabin Controller Reference | Industrial Sensor Signal Conditioning |
Use Scenario: Providing stable 16 V reference for analog front-end biasing in HVAC or lighting control modules. IC Role / Device Role / Timing Role: Precision voltage source for ADC reference dividers or op-amp feedback networks. Use Value: Achieves ±0.7 V total variation over −40 to +125 °C using NZ9F16VST5G's +10.4 mV/°C tempco and AEC-Q101 validation. | Use Scenario: Stabilizing excitation voltage for 4–20 mA loop-powered pressure or temperature transmitters. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant headroom for current-sink drivers under varying supply conditions. Use Value: Ensures NZ9F16VST5G's 50 Ω ZZT maintains regulation accuracy within ±1% despite 10–20 mA load swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C16LT1G | Same 16 V nominal VZ, but 300 mW PD and SOD-523 package (0.8 × 0.6 × 0.5 mm) | Higher power margin allows longer surge duration; slightly taller profile may impact stack height | Select when >250 mW transient energy absorption is required and board height permits 0.5 mm height |
| MMSZ4687T1G | 16 V VZ, 500 mW PD, SOD-123 package (3.7 × 1.6 × 1.1 mm) | Triple the power rating but 6× larger footprint - unsuitable for ultra-dense layouts | Choose for industrial power supplies where thermal mass and layout area are available |
Compared with BZX584C16LT1G and MMSZ4687T1G, NZ9F16VST5G offers the smallest footprint (SOD-923) and automotive qualification, making it optimal for space-limited, high-reliability consumer and automotive applications - though with lower absolute power handling than the alternatives.
Availability
NZ9F16VST5G is available at Aetrix Electronics and suitable for smartphone power rail protection, USB-C port overvoltage clamp, and automotive cabin controller reference requiring stable component supply and long-term lifecycle support.
Supply support for NZ9F16VST5G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NZ9F series targets miniaturized, high-reliability voltage regulation in portable and automotive electronics - emphasizing ultra-small packaging, AEC-Q101 compliance, and tight parametric control for next-generation compact systems.
FAQ
What is the Zener voltage tolerance of NZ9F16VST5G at its rated test current?
The NZ9F16VST5G exhibits a Zener voltage range of 15.85 V to 16.51 V at IZT = 5 mA, corresponding to ±4.2% tolerance about the nominal 16 V value. This specification is verified per onsemi's Electrical Characteristics table on page 3 of the official datasheet (Rev. 4, September 2025). The tolerance directly affects circuit margin design for overvoltage protection thresholds in NZ9F16VST5G-based applications.
Is NZ9F16VST5G suitable for automotive applications?
Yes, NZ9F16VST5G is AEC-Q101 qualified and PPAP capable, with full validation across −65 °C to +150 °C junction temperature range. Its SOD-923 package meets MSL 1 reflow standards, and the device carries the SZ prefix option for automotive-specific traceability. These attributes make NZ9F16VST5G appropriate for use in automotive infotainment, body control modules, and ADAS subsystems where reliability under thermal stress is critical.
What is the maximum steady-state power dissipation for NZ9F16VST5G on an FR-5 board?
NZ9F16VST5G has a maximum steady-state power dissipation of 250 mW at ambient temperature TA = 25 °C on an FR-5 board, with linear derating of 2.0 mW/°C above that temperature. This rating assumes minimum pad layout per datasheet Note 1 and is validated under JEDEC J-STD-020 conditions. Engineers must apply this derating curve when designing thermal management for NZ9F16VST5G in sustained-clamp scenarios.
Does NZ9F16VST5G have ESD protection built-in?
Yes, NZ9F16VST5G is rated Class 3 per Human Body Model (HBM) with >16 kV ESD withstand capability. This level of robustness is intrinsic to the device structure and packaging - no external TVS diodes are needed for basic handling and assembly protection. The ESD performance is confirmed in the Specification Features section of the onsemi datasheet and contributes to yield improvement in high-volume manufacturing of NZ9F16VST5G-based assemblies.
What is the Zener impedance of NZ9F16VST5G at its test current?
The maximum Zener impedance (ZZT) of NZ9F16VST5G is 50 Ω at IZT = 5 mA and TA = 25 °C, as specified in the Electrical Characteristics table. This parameter reflects dynamic resistance during regulation and directly influences output voltage stability under varying load conditions. For precision reference designs, this value helps determine expected ripple rejection when using NZ9F16VST5G in feedback paths.
NZ9F16VST5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16.18 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 50 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 12 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-923
NZ9F16VST5G FAQ
1.How can I place an order for NZ9F16VST5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZ9F16VST5G 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 NZ9F16VST5G reliable?
The price and inventory of NZ9F16VST5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ9F16VST5G is usually 5 days.
3.What payment methods are accepted for NZ9F16VST5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ9F16VST5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZ9F16VST5G?
NZ9F16VST5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZ9F16VST5G 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 NZ9F16VST5G?
For technical support, including NZ9F16VST5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ9F16VST5G requirements.
6.How does Aetrix verify that NZ9F16VST5G is sourced from the original manufacturer or authorized distributors?
All NZ9F16VST5G 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 NZ9F16VST5G meets industry standards.
7.What is the process for return or replacement of NZ9F16VST5G?
All NZ9F16VST5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ9F16VST5G, 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 NZ9F16VST5G part is unused and in its original packaging.
Return procedure for NZ9F16VST5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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