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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

onsemi NZ9F6V8ST5G

Name: NZ9F6V8ST5G
Brand: onsemi
SKU: NZ9F6V8ST5G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZ9F6V8ST5G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SOD-923

Datasheet:: NZ9F6V8ST5G.pdf

Description:: DIODE ZENER 6.8V 250MW SOD923

Quantity:: RFQ Add To RFQ list

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Inventory:12,853

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Product details

Overview

NZ9F6V8ST5G from onsemi is a 250 mW, 6.65–6.93 V Zener voltage regulator diode in SOD-923 surface-mount package, designed for precision voltage clamping and ESD protection in space-constrained portable electronics. It features ±5% Zener tolerance at 5 mA test current, 40 Ω max dynamic impedance at I_ZT, and 105 pF max junction capacitance at 0 V.

For engineers reviewing the NZ9F6V8ST5G datasheet, pinout, applications, or equivalent options, key selection criteria include its low-profile 0.40 mm height, AEC-Q101 qualification (SZ-prefix variant), Class 3 HBM ESD rating (>16 kV), and tight V_Z tolerance - critical for battery monitoring, USB port protection, and low-voltage rail stabilization.

Technical Context

This device operates as a two-terminal, silicon planar Zener diode with reverse-biased breakdown regulation. Its 6.65–6.93 V nominal Zener voltage is specified at I_ZT = 5 mA, with temperature coefficient of +1.2 mV/°C and maximum Zener impedance of 40 Ω at that condition.

Thermal performance is defined by 500 °C/W junction-to-ambient thermal resistance and 2.0 mW/°C derating above 25 °C ambient. The SOD-923 package supports reflow up to 260 °C and meets MSL 1 requirements, enabling compatibility with high-volume automated assembly.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.65–6.93 V @ I_ZT = 5 mA - defines precise clamping threshold for 6.8 V nominal rail protection
Power Dissipation (P_D)	250 mW @ T_A = 25 °C - supports continuous regulation in compact PCB layouts without forced cooling
Zener Impedance (Z_ZT)	40 Ω max @ I_ZT = 5 mA - ensures stable voltage under moderate load transients
Junction Capacitance (C)	105 pF max @ V_R = 0 V, f = 1 MHz - limits high-frequency signal coupling in RF-adjacent circuits
ESD Rating (HBM)	Class 3 (>16 kV) - provides robust handling safety and system-level ESD immunity without external suppressors
Package Dimensions	1.00 mm × 0.60 mm × 0.40 mm - enables placement in ultra-dense mobile and wearables PCBs
Temperature Coefficient	+1.2 mV/°C @ I_ZT = 5 mA - indicates positive drift, critical for temperature-compensated reference designs

Pinout & Package

SOD-923 package: 2-pin, surface-mount, cathode-marked (band) top-side marking; body size 1.00 mm × 0.60 mm × 0.40 mm; matte tin lead finish; MSL 1 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 (Marked Band)	Cathode	Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs
2	Anode	Connected to ground or lower-potential reference; completes conduction path during overvoltage events

Key Features

Feature	Design Value
Tight Zener Voltage Tolerance	±5% at I_ZT = 5 mA - reduces need for post-production trimming in voltage-reference circuits
Low Profile Height	0.40 mm max - allows routing traces underneath in 0.4 mm pitch fine-pitch BGA layouts
AEC-Q101 Qualified Variant	SZ-prefix version available - supports automotive infotainment and ADAS subsystems requiring qualified components
Pb-Free & RoHS Compliant	100% matte Sn finish, UL 94 V-0 epoxy - meets global environmental compliance and solderability standards
High ESD Robustness	>16 kV HBM - eliminates need for discrete TVS in many USB, SIM, and SD card interface designs

Applications

Smartphone Power Management	USB Type-C Port Protection
Use Scenario: Clamping transient surges on 5 V USB VBUS line during hot-plug events and ESD discharge. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as primary overvoltage clamp before downstream PMIC input. Use Value: Prevents damage to USB controller ICs using only 105 pF capacitance and 6.65–6.93 V trigger - avoids signal integrity degradation.	Use Scenario: Protecting CC logic pins and VCONN supply against contact-induced ESD in reversible USB-C connectors. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp placed directly at connector footprint to divert fast HBM pulses. Use Value: Leverages >16 kV HBM rating and 0.40 mm height to fit within strict USB-C mechanical envelope while meeting IEC 61000-4-2 Level 4.
Wearable Battery Monitoring	Industrial Sensor Signal Conditioning
Use Scenario: Stabilizing reference voltage for fuel gauge ADC inputs in Li-ion battery packs with 3.0–4.2 V range. IC Role / Device Role / Timing Role: Precision Zener providing temperature-stable 6.8 V reference for resistive divider scaling. Use Value: +1.2 mV/°C tempco enables predictable offset correction across −20 to +70 °C operating range.	Use Scenario: Protecting analog front-end inputs of 24-bit delta-sigma ADCs from field-induced transients in factory automation sensors. IC Role / Device Role / Timing Role: Low-leakage shunt clamp (0.5 µA max IR @ VR = 5.5 V) preserving signal fidelity at microvolt levels. Use Value: 40 Ω Z_ZT ensures minimal loading error during 5 mA reference current sourcing to op-amp bias networks.

Smartphone Power Management

USB Type-C Port Protection

Use Scenario: Clamping transient surges on 5 V USB VBUS line during hot-plug events and ESD discharge.

IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as primary overvoltage clamp before downstream PMIC input.

Use Value: Prevents damage to USB controller ICs using only 105 pF capacitance and 6.65–6.93 V trigger - avoids signal integrity degradation.

Use Scenario: Protecting CC logic pins and VCONN supply against contact-induced ESD in reversible USB-C connectors.

IC Role / Device Role / Timing Role: Low-capacitance Zener clamp placed directly at connector footprint to divert fast HBM pulses.

Use Value: Leverages >16 kV HBM rating and 0.40 mm height to fit within strict USB-C mechanical envelope while meeting IEC 61000-4-2 Level 4.

Wearable Battery Monitoring

Industrial Sensor Signal Conditioning

Use Scenario: Stabilizing reference voltage for fuel gauge ADC inputs in Li-ion battery packs with 3.0–4.2 V range.

IC Role / Device Role / Timing Role: Precision Zener providing temperature-stable 6.8 V reference for resistive divider scaling.

Use Value: +1.2 mV/°C tempco enables predictable offset correction across −20 to +70 °C operating range.

Use Scenario: Protecting analog front-end inputs of 24-bit delta-sigma ADCs from field-induced transients in factory automation sensors.

IC Role / Device Role / Timing Role: Low-leakage shunt clamp (0.5 µA max IR @ VR = 5.5 V) preserving signal fidelity at microvolt levels.

Use Value: 40 Ω Z_ZT ensures minimal loading error during 5 mA reference current sourcing to op-amp bias networks.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584C6V8	6.8 V nominal, ±5%, 300 mW P_D, SOD-523 package (1.2 × 0.8 mm)	Larger footprint and higher power; less suitable for <0.6 mm width constraints	Preferred when higher surge energy handling is required and board area permits larger package
MMSZ4687T1G	6.8 V nominal, ±5%, 500 mW P_D, SOD-123 package (3.7 × 1.6 mm)	3× larger footprint, higher thermal mass; not viable for ultra-thin wearable PCBs	Chosen for industrial control modules where layout density is secondary to long-term power reliability

Compared with BZX584C6V8 and MMSZ4687T1G, NZ9F6V8ST5G delivers identical voltage regulation performance in the smallest available footprint (1.0 × 0.6 mm), enabling direct integration into sub-1.0 mm pitch flex circuits and stacked module assemblies where height ≤0.4 mm is mandatory.

Availability

NZ9F6V8ST5G is available at Aetrix Electronics and suitable for smartphone power management, USB Type-C port protection, and wearable battery monitoring requiring stable component supply and full traceability.

Supply support for NZ9F6V8ST5G 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, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The NZ9F6V8ST5G belongs to onsemi's NZ9F series of ultra-small-signal Zener regulators, engineered specifically for miniaturized portable electronics where board space, profile, and ESD resilience are primary design constraints.

FAQ

What is the exact Zener voltage range specified for NZ9F6V8ST5G?

The NZ9F6V8ST5G has a guaranteed Zener voltage range of 6.65 V to 6.93 V when tested at I_ZT = 5 mA and T_A = 25 °C. This ±5% tolerance is tighter than standard Zeners and ensures predictable clamping behavior in precision voltage-reference applications. The NZ9F6V8ST5G datasheet confirms this range on page 3 under Electrical Characteristics.

Is NZ9F6V8ST5G suitable for automotive applications?

The base NZ9F6V8ST5G is not AEC-Q101 qualified; however, the SZ-prefix variant SZNZ9F6V8ST5G is fully AEC-Q101 qualified and PPAP capable. For automotive use - such as infotainment power rails or ADAS camera module protection - the SZNZ9F6V8ST5G must be selected. NZ9F6V8ST5G itself is rated for industrial and consumer-grade operation only.

What is the maximum junction temperature for NZ9F6V8ST5G?

The NZ9F6V8ST5G has a junction and storage temperature range of −65 °C to +150 °C. Its thermal resistance is 500 °C/W (Junction-to-Ambient), meaning at 250 mW dissipation and 25 °C ambient, junction temperature rises to 150 °C - the absolute maximum. Derating is required above 25 °C per the 2.0 mW/°C curve shown in Figure 2 of the NZ9F6V8ST5G datasheet.

Does NZ9F6V8ST5G have polarity marking, and how is it identified?

Yes, NZ9F6V8ST5G uses Style 1 marking per the SOD-923 mechanical drawing: Pin 1 is the cathode and is indicated by a polarity band on the top surface of the package. The anode (Pin 2) is unmarked. This marking aligns with JEDEC-standard SOD-923 orientation and ensures correct placement during automated pick-and-place assembly.

What is the reverse leakage current specification for NZ9F6V8ST5G at 5.5 V?

At V_R = 5.5 V and T_A = 25 °C, the NZ9F6V8ST5G exhibits a maximum reverse leakage current (I_R) of 0.5 µA. This low leakage preserves signal integrity in high-impedance sensor bias networks and ensures minimal quiescent current draw in always-on wearable subsystems.

NZ9F6V8ST5G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SOD-923

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 6.8 V

Tolerance:: ±2%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 40 Ohms

Current - Reverse Leakage @ Vr:: 500 nA @ 3.5 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

NZ9F6V8ST5G FAQ

1.How can I place an order for NZ9F6V8ST5G through Aetrix?

Please submit a Request for Quotation (RFQ) for NZ9F6V8ST5G 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 NZ9F6V8ST5G reliable?

The price and inventory of NZ9F6V8ST5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ9F6V8ST5G is usually 5 days.

3.What payment methods are accepted for NZ9F6V8ST5G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ9F6V8ST5G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZ9F6V8ST5G?

NZ9F6V8ST5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZ9F6V8ST5G 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 NZ9F6V8ST5G?

For technical support, including NZ9F6V8ST5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ9F6V8ST5G requirements.

6.How does Aetrix verify that NZ9F6V8ST5G is sourced from the original manufacturer or authorized distributors?

All NZ9F6V8ST5G 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 NZ9F6V8ST5G meets industry standards.

7.What is the process for return or replacement of NZ9F6V8ST5G?

All NZ9F6V8ST5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ9F6V8ST5G, 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 NZ9F6V8ST5G part is unused and in its original packaging.

Return procedure for NZ9F6V8ST5G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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