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onsemi NZ9F3V6ST5G
- Part No.:
- NZ9F3V6ST5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
NZ9F3V6ST5G.pdf
- Description:
- DIODE ZENER 3.73V 250MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:6,190
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Product details
Overview
NZ9F3V6ST5G from onsemi is a 3.6 V to 3.85 V Zener voltage regulator diode in SOD−923 package, rated for 250 mW steady-state power dissipation at 25°C, with 100 Ω max Zener impedance at 5 mA test current and 10 µA max reverse leakage at 2.88 V, used for precision voltage clamping and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the NZ9F3V6ST5G datasheet, pinout, applications, or equivalent options, key selection criteria include its ±5% Zener voltage tolerance, AEC−Q101 qualification (SZ-prefix variant), 16 kV HBM ESD rating, low 0.40 mm body height, and Pb-free matte tin lead finish compatible with 260°C reflow.
Technical Context
This device operates as a two-terminal silicon Zener diode with reverse-biased breakdown regulation. It delivers stable clamping at nominal 3.6–3.85 V with temperature coefficient of −3.5 mV/°C and capacitance ≤210 pF at 0 V and 1 MHz.
Designed for surface-mount use on FR-4 PCBs, it features MSL 1 moisture sensitivity, void-free thermosetting plastic case meeting UL 94 V-0, and qualified for automotive applications when ordered with SZ prefix-though NZ9F3V6ST5G itself carries the standard NZ prefix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V min to 3.85 V max at IZT = 5 mA - defines precise clamping threshold for low-voltage rail protection |
| Power Dissipation (PD) | 250 mW at TA = 25°C - sets maximum continuous thermal load on PCB without forced cooling |
| Zener Impedance (ZZT) | ≤100 Ω at IZT = 5 mA - ensures minimal voltage shift under dynamic load transients |
| Reverse Leakage (IR) | ≤10 µA at VR = 2.88 V - guarantees low standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV) per HBM - enables robust handling in high-static assembly environments |
| Package Dimensions | 1.00 mm × 0.60 mm × 0.40 mm - fits ultra-dense layouts such as smartphone PMIC rails and wearable sensor nodes |
| Thermal Resistance (RJA) | 500 °C/W - determines junction temperature rise under given ambient and pad conditions |
Pinout & Package
SOD−923 surface-mount package: 2-pin, cathode-anode configuration, 0.40 mm profile, matte Sn finish, MSL 1, 260°C reflow capable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity must be observed for correct reverse-bias operation |
| 2 | Anode | Connected to ground or lower-potential reference; completes Zener conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±5% (3.6–3.85 V range) - reduces need for post-production trimming in voltage-reference circuits |
| Low-profile SOD−923 | 0.40 mm height - enables stacking under shields or placement beneath connectors in slim devices |
| Pb-free & RoHS compliant | 100% matte Sn lead finish - satisfies global environmental compliance without solderability trade-offs |
| High ESD robustness | 16 kV HBM - eliminates need for external ESD protection in many handheld interface lines |
| Stable tempco | −3.5 mV/°C - supports predictable clamping across −65°C to +150°C operating range |
Applications
| Smartphone Power Rail Protection | Wearable Sensor Biasing |
|---|---|
Use Scenario: Clamping 3.3 V I/O supply against ESD spikes and transient surges in LTE modem interfaces. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing passive overvoltage protection. Use Value: Prevents latch-up in baseband ICs by limiting excursion to ≤3.85 V with <100 Ω dynamic impedance. |
Use Scenario: Establishing stable 3.6 V bias for MEMS accelerometer analog front-end in hearable devices. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC reference divider networks. Use Value: Delivers ±5% accuracy without active regulation, reducing quiescent current versus LDO solutions. |
| USB-C Port VBUS Monitoring | Industrial IoT Node Voltage Clamp |
Use Scenario: Protecting USB-C CC logic pins from VBUS coupling during hot-plug events. IC Role / Device Role / Timing Role: Fast-response clamping diode placed between CC line and ground. Use Value: Activates within nanoseconds at 3.6 V, limiting stress to <5 V before TVS engagement. |
Use Scenario: Safeguarding 3.3 V microcontroller GPIOs exposed to 24 V field wiring in smart sensors. IC Role / Device Role / Timing Role: Primary overvoltage clamp in multi-stage protection architecture. Use Value: Withstands 250 mW surge energy and maintains integrity up to +150°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C3V6 | Same 3.6 V nominal Zener, but SOD-323 package (1.7 × 1.3 mm); 350 mW rating; ±5% tolerance | Larger footprint and higher power allow higher-energy transient absorption; less suitable for sub-1 mm² layouts | Select when board space permits and >250 mW clamping margin is required |
| MMSZ4685 | 3.68 V nominal, SOD-123 package (3.7 × 1.6 mm); 500 mW rating; ±5% tolerance; no AEC-Q101 option | Higher power and larger thermal mass support sustained clamping; lacks automotive qualification and compact size | Choose for cost-sensitive industrial designs where footprint and qualification are secondary |
Compared with BZX584-C3V6 and MMSZ4685, NZ9F3V6ST5G offers the smallest PCB area (0.6 mm²), lowest profile (0.4 mm), and highest ESD immunity (16 kV), making it optimal for miniaturized, high-reliability consumer and medical wearables where layout density and static robustness are critical.
Availability
NZ9F3V6ST5G is available at Aetrix Electronics and suitable for smartphone power rail protection, wearable sensor biasing, USB-C port monitoring, and industrial IoT node voltage clamping requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for NZ9F3V6ST5G 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 focused on energy-efficient electronics, delivering silicon-based solutions for automotive, industrial, cloud, and intelligent edge applications.
NZ9F3V6ST5G belongs to the NZ9FxxxST5G series of miniature Zener regulators designed specifically for space-constrained, high-density portable electronics requiring precision clamping, low-profile packaging, and high ESD resilience.
FAQ
What is the Zener voltage tolerance of NZ9F3V6ST5G?
The NZ9F3V6ST5G has a specified Zener voltage range of 3.6 V minimum to 3.85 V maximum at 5 mA test current, corresponding to a ±5% tolerance about the nominal 3.6 V value. This tight tolerance is confirmed in the Electrical Characteristics table on page 3 of the official datasheet and applies directly to the NZ9F3V6ST5G part number.
Is NZ9F3V6ST5G AEC-Q101 qualified?
No - NZ9F3V6ST5G carries the standard NZ prefix and is not AEC-Q101 qualified. The automotive-grade version is designated SZNZ9F3V6ST5G (with SZ prefix), which shares identical electrical specs but undergoes additional qualification testing and PPAP documentation. NZ9F3V6ST5G is intended for commercial and industrial applications.
What is the maximum operating temperature for NZ9F3V6ST5G?
The NZ9F3V6ST5G has a junction and storage temperature range of −65°C to +150°C, as stated in the Maximum Ratings table. Its thermal resistance is 500°C/W, so actual maximum operating temperature depends on ambient conditions and PCB copper area; at 250 mW dissipation and 25°C ambient, junction temperature reaches 150°C - the absolute limit.
Does NZ9F3V6ST5G have a defined forward voltage specification?
Yes - the datasheet specifies forward voltage VF ≤ 0.9 V at IF = 10 mA for all devices in the NZ9FxxxST5G series, including NZ9F3V6ST5G. This parameter is relevant for forward-bias verification during functional testing and ensures compatibility with standard digital logic level thresholds.
What is the marking code for NZ9F3V6ST5G on the SOD−923 package?
The NZ9F3V6ST5G is marked with "6*" on the top surface of the SOD−923 package, where "6" denotes the device code for the 3.6–3.85 V Zener variant and "*" indicates a 90° rotation of the marking. This marking is documented in the Device Marking Information section on page 3 of the datasheet.
NZ9F3V6ST5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.73 V
- Tolerance:
- ±3%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 10 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
NZ9F3V6ST5G FAQ
1.How can I place an order for NZ9F3V6ST5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZ9F3V6ST5G 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 NZ9F3V6ST5G reliable?
The price and inventory of NZ9F3V6ST5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ9F3V6ST5G is usually 5 days.
3.What payment methods are accepted for NZ9F3V6ST5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ9F3V6ST5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZ9F3V6ST5G?
NZ9F3V6ST5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZ9F3V6ST5G 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 NZ9F3V6ST5G?
For technical support, including NZ9F3V6ST5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ9F3V6ST5G requirements.
6.How does Aetrix verify that NZ9F3V6ST5G is sourced from the original manufacturer or authorized distributors?
All NZ9F3V6ST5G 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 NZ9F3V6ST5G meets industry standards.
7.What is the process for return or replacement of NZ9F3V6ST5G?
All NZ9F3V6ST5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ9F3V6ST5G, 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 NZ9F3V6ST5G part is unused and in its original packaging.
Return procedure for NZ9F3V6ST5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZ9F3V6ST5G Tags
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