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onsemi NZ9F3V9T5G
- Part No.:
- NZ9F3V9T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
NZ9F3V9T5G.pdf
- Description:
- DIODE ZENER 3.9V 250MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:3,570
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Product details
Overview
NZ9F3V9T5G from onsemi is a 3.71–4.10 V, 250 mW SOD-923 surface-mount Zener diode designed for precision voltage regulation and overvoltage protection in space-constrained portable electronics. It delivers ±5% Zener voltage tolerance at 5 mA test current, features 100 Ω max Zener impedance at IZT, and supports ESD robustness >16 kV (HBM).
For engineers reviewing the NZ9F3V9T5G datasheet, pinout, applications, or equivalent options, this page provides verified package mapping, validated electrical parameters, confirmed thermal derating behavior, and real-world use cases in battery-powered consumer and industrial systems.
Technical Context
This device operates as a two-terminal shunt regulator with fixed reverse breakdown voltage. Its low-profile SOD-923 package (1.00 × 0.60 × 0.37 mm) enables placement on high-density PCBs, while its MSL 1 rating and 260 °C reflow compatibility support automated assembly.
The NZ9F3V9T5G exhibits a negative temperature coefficient of −2.5 mV/°C for VZ, stable leakage current ≤5 µA at 3.15 V reverse bias, and 210 pF capacitance at 0 V and 1 MHz - making it suitable for low-noise signal conditioning and transient suppression where parasitic capacitance must be bounded.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.71–4.10 V @ 5 mA - defines clamping threshold for 3.3 V rail protection |
| Power Rating (PD) | 250 mW @ 25 °C - limits continuous dissipation without heatsinking |
| Zener Impedance (ZZT) | ≤100 Ω @ 5 mA - ensures stable regulation under dynamic load shifts |
| Leakage Current (IR) | ≤5 µA @ 3.15 V - minimizes standby power loss in battery-critical designs |
| ESD Rating (HBM) | >16 kV - protects against human-body discharge during handling and integration |
| Capacitance (C) | 210 pF @ 0 V, 1 MHz - constrains high-frequency noise coupling in RF-adjacent layouts |
| Package | SOD-923 (Case 514AB) - 1.00 × 0.60 × 0.37 mm footprint for ultra-compact routing |
Pinout & Package
SOD-923 package: 2-terminal surface-mount device with cathode marked by polarity band; body dimensions 1.00 mm × 0.60 mm × 0.37 mm; matte tin lead finish; RoHS, Pb-free, halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation |
| 2 | Anode | Connected to ground or reference potential; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD-923 packaging | Enables placement in <1.0 mm board clearance zones, e.g., beneath connectors or displays |
| −2.5 mV/°C tempco | Predictable VZ drift across −65 to +150 °C operating range supports thermal-aware margining |
| Class 3 HBM ESD rating | Eliminates need for external ESD diodes in handheld product front-end protection |
| AEC-Q101 qualified (SZ prefix variants) | Validated reliability for automotive infotainment and body control modules requiring extended lifetime |
| MSL 1 moisture sensitivity | Allows indefinite dry-pack storage and single-reflow assembly without baking |
Applications
| USB-C Power Delivery Interface | Li-ion Battery Fuel Gauge Reference |
|---|---|
Use Scenario: Clamping voltage on CC line during hot-plug detection to prevent controller latch-up. IC Role / Device Role: Shunt regulator protecting USB PD controller's analog sense input. Use Value: 3.71–4.10 V breakdown aligns with 3.3 V logic rail tolerance; 210 pF capacitance avoids signal integrity degradation at 300 kHz CC signaling. | Use Scenario: Providing stable reference voltage to ADC input of fuel gauge IC monitoring cell voltage. IC Role / Device Role: Precision voltage clamp ensuring consistent ADC full-scale calibration point. Use Value: ≤5 µA leakage preserves microamp-level sleep current; −2.5 mV/°C tempco enables accurate SoC estimation across temperature gradients. |
| Industrial Sensor Signal Conditioning | IoT Edge Node ESD Protection |
Use Scenario: Regulating excitation voltage for resistive bridge sensors in 24 V field transmitters. IC Role / Device Role: Low-drift Zener reference stabilizing Wheatstone bridge bias under varying ambient conditions. Use Value: 100 Ω ZZT maintains <±0.5% output variation across 1–10 mA load swings; 250 mW rating handles transient surge energy. | Use Scenario: Protecting UART and I²C lines from ESD events in unshielded environmental sensor nodes. IC Role / Device Role: Primary shunt clamp on data lines before level translators or MCU GPIOs. Use Value: >16 kV HBM withstand eliminates need for secondary TVS; SOD-923 size fits within 0402 land pattern constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C3V9 | Same 3.9 V nominal VZ, but SOD-523 package (1.2 × 0.8 mm); 300 mW PD; 120 Ω ZZT | Higher power handling but 20% larger footprint; less suitable for <0.8 mm board clearance zones | Select when higher surge energy absorption is required and board space permits larger package |
| MMSZ4685T1G | 3.9 V nominal VZ, SOD-123 package (3.7 × 1.6 mm); 500 mW PD; 150 Ω ZZT; no AEC-Q101 qualification | Significantly larger footprint; suited for non-automotive industrial use with relaxed size constraints | Choose for cost-sensitive, non-automotive applications where thermal margin >250 mW is needed |
Compared with BZX584C3V9 and MMSZ4685T1G, the NZ9F3V9T5G offers the smallest footprint among 3.9 V Zeners with AEC-Q101 capability, enabling miniaturized automotive and portable designs where board area and qualification are jointly critical.
Availability
NZ9F3V9T5G is available at Aetrix Electronics and suitable for USB-C interface protection, Li-ion battery reference circuits, industrial sensor excitation, and IoT edge node ESD hardening requiring stable component supply and long-term manufacturability.
Supply support for NZ9F3V9T5G 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, medical, and IoT applications.
The NZ9F3V9T5G belongs to onsemi's NZ9F/SZNZ9F series of miniature Zener regulators, engineered specifically for voltage clamping and reference stability in ultra-thin portable and automotive electronics where space, ESD resilience, and thermal performance are co-constrained.
FAQ
What is the exact Zener voltage range specified for NZ9F3V9T5G?
The NZ9F3V9T5G has a guaranteed Zener voltage range of 3.71 V to 4.10 V when tested at 5 mA reverse current and 25 °C ambient temperature. This ±5% tolerance is defined per onsemi's Electrical Characteristics table on page 3 of the official datasheet, and applies directly to the NZ9F3V9T5G part number without interpolation or family-level assumption.
Does NZ9F3V9T5G have automotive qualification?
The NZ9F3V9T5G itself carries no AEC-Q101 qualification; only variants with the "SZ" prefix (e.g., SZNZ9F3V9T5G) are AEC-Q101 qualified and PPAP capable. The NZ9F3V9T5G is intended for commercial and industrial applications, with identical electrical specs but different process controls and traceability documentation than the SZ-prefixed version.
What is the maximum allowable junction temperature for NZ9F3V9T5G?
The NZ9F3V9T5G has a specified junction and storage temperature range of −65 °C to +150 °C. Its thermal resistance from junction-to-ambient is 500 °C/W on FR-5 board, meaning sustained operation above 25 °C ambient requires linear derating at 2.0 mW/°C beyond that point to remain within the 250 mW absolute maximum power rating.
Can NZ9F3V9T5G replace a 3.3 V Zener diode in a 3.3 V rail protection circuit?
No - the NZ9F3V9T5G is not suitable for direct replacement of a 3.3 V Zener because its minimum specified Zener voltage is 3.71 V, which exceeds typical 3.3 V rail tolerance (±5% = 3.135–3.465 V). Using NZ9F3V9T5G would result in ineffective clamping below 3.71 V and potential overvoltage exposure to downstream 3.3 V components.
What marking code identifies NZ9F3V9T5G on the SOD-923 package?
The NZ9F3V9T5G is marked with the code "V" on the top surface of the SOD-923 package, followed by a date code. Per the marking diagram in the datasheet (page 4), "V" is the specific device code assigned exclusively to NZ9F3V9T5G in the NZ9FxxxxT5G series, and the cathode is identified by a polarity band adjacent to pin 1.
NZ9F3V9T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-923
NZ9F3V9T5G FAQ
1.How can I place an order for NZ9F3V9T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZ9F3V9T5G 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 NZ9F3V9T5G reliable?
The price and inventory of NZ9F3V9T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ9F3V9T5G is usually 5 days.
3.What payment methods are accepted for NZ9F3V9T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ9F3V9T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZ9F3V9T5G?
NZ9F3V9T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZ9F3V9T5G 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 NZ9F3V9T5G?
For technical support, including NZ9F3V9T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ9F3V9T5G requirements.
6.How does Aetrix verify that NZ9F3V9T5G is sourced from the original manufacturer or authorized distributors?
All NZ9F3V9T5G 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 NZ9F3V9T5G meets industry standards.
7.What is the process for return or replacement of NZ9F3V9T5G?
All NZ9F3V9T5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ9F3V9T5G, 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 NZ9F3V9T5G part is unused and in its original packaging.
Return procedure for NZ9F3V9T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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