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onsemi SZNZ9F5V1T5G
- Part No.:
- SZNZ9F5V1T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
SZNZ9F5V1T5G.pdf
- Description:
- DIODE ZENER 5.1V 250MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:8,410
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Product details
Overview
SZNZ9F5V1T5G from onsemi is a 5.1 V ±5% Zener voltage regulator diode in SOD-923 package, rated for 250 mW steady-state power dissipation at 25 °C, with 80 Ω max Zener impedance at 5 mA test current and 1.5 µA max reverse leakage at 1.2 V. It provides precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZNZ9F5V1T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), low-profile SOD-923 footprint (1.00 mm × 0.60 mm × 0.37 mm), AEC-Q101 qualification, 16 kV HBM ESD rating, and thermal derating behavior above 25 °C.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across load variations by conducting reverse current when applied voltage exceeds its 4.85–5.36 V breakdown range. Its low 0.40 mm body height and 100% matte tin lead finish support high-density PCB assembly and lead-free reflow compatibility up to 260 °C.
Designed for automotive and industrial applications requiring PPAP capability, the SZNZ9F5V1T5G features −2.7 mV/°C temperature coefficient and 130 pF capacitance at 0 V, enabling stable regulation under thermal drift and minimal signal coupling in RF-adjacent circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.85 V min to 5.36 V max at 5 mA - defines regulated voltage window under nominal bias |
| Power Dissipation (PD) | 250 mW at 25 °C, derated 2.0 mW/°C above - sets maximum continuous thermal load on FR-5 board |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 5 mA - determines regulation stiffness against load transients |
| Reverse Leakage (IR) | 1.5 µA max at VR = 1.2 V - ensures minimal standby current in low-power systems |
| ESD Rating | Class 3 (>16 kV) per HBM - protects against electrostatic discharge during handling and assembly |
| Operating Temperature | −65 °C to +150 °C - supports extended-range operation in automotive under-hood and industrial environments |
| Package | SOD-923 (Case 514AB), 1.00 mm × 0.60 mm × 0.37 mm - enables placement in <1.0 mm pitch layouts |
Pinout & Package
SOD-923 surface-mount package with cathode marked by polarity band; 2-terminal configuration optimized for compact layout and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Regulated output node | Connected to voltage rail being stabilized; reverse-biased during regulation |
| 2 (Anode) | Reference/ground return | Tied to system ground or lower-potential node; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, infotainment, and ADAS modules |
| Pb-Free, Halogen Free/BFR Free | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 MSL 1 reflow profile |
| Low-profile SOD-923 | 0.37 mm max height enables stacking under connectors or beneath shields in ultra-thin devices |
| High ESD immunity | 16 kV HBM rating eliminates need for external ESD protection in handheld interface lines |
| Stable tempco | −2.7 mV/°C enables predictable drift compensation in temperature-sensitive analog references |
Applications
| USB Power Rail Protection | Automotive Sensor Reference |
|---|---|
|
Use Scenario: Clamping transient surges on 5 V USB VBUS lines in portable accessories and docking stations. IC Role / Device Role / Timing Role: Shunt regulator providing overvoltage clamping and ESD suppression at the input stage. Use Value: Prevents damage to downstream USB controllers using only 250 mW dissipation and no external components. |
Use Scenario: Supplying stable 5.1 V reference to pressure or temperature sensors in engine control units. IC Role / Device Role / Timing Role: Precision voltage reference source with low tempco for analog-to-digital conversion. Use Value: Maintains sensor accuracy across −40 °C to +125 °C ambient with <±5% VZ tolerance. |
| Smartphone Battery Monitoring | Industrial PLC Input Conditioning |
|
Use Scenario: Regulating voltage for fuel gauge ICs and battery management ADCs in space-limited mobile designs. IC Role / Device Role / Timing Role: Low-capacitance (130 pF) Zener reference minimizing signal distortion on analog monitoring paths. Use Value: Enables accurate battery voltage sampling without loading the sense line or degrading ADC resolution. |
Use Scenario: Providing isolated 5 V reference for 24 V digital input conditioning circuits in factory automation controllers. IC Role / Device Role / Timing Role: Robust shunt regulator protecting optocoupler input stages from supply overvoltage events. Use Value: Survives repeated 100 V transients per IEC 61000-4-5 due to AEC-Q101 stress validation and 250 mW surge rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V1LT1G | Same 5.1 V nominal Zener voltage but ±2% tolerance; 350 mW power rating; SOD-523 package (0.6 × 0.3 × 0.3 mm) | Higher precision and power, but smaller pad area requires tighter stencil control and higher placement accuracy | Select when tighter voltage tolerance and higher surge capacity are required, and board real estate allows SOD-523 geometry |
| MMSZ5231BT1G | 5.1 V nominal, ±5% tolerance; 500 mW power; SOD-123 package (3.7 × 1.6 × 1.1 mm); −2.5 mV/°C tempco | Larger footprint accommodates higher thermal mass but occupies >3× the area of SOD-923 | Choose for legacy designs needing drop-in replacement with greater thermal margin and established qualification history |
Compared with BZX584C5V1LT1G and MMSZ5231BT1G, the SZNZ9F5V1T5G delivers optimal balance of ultra-compact size, automotive qualification, and controlled tempco-making it preferred for next-gen portable and automotive modules where board area and reliability are co-constrained.
Availability
SZNZ9F5V1T5G is available at Aetrix Electronics and suitable for cellular phone power management, automotive sensor reference circuits, and high-density PC board voltage clamping requiring stable component supply and full traceability.
Supply support for SZNZ9F5V1T5G 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/SZNZ9F series was developed specifically for space-constrained, high-reliability voltage regulation-targeting portable electronics, automotive subsystems, and industrial edge nodes demanding AEC-Q101 compliance and ultra-small footprints.
FAQ
What is the Zener voltage tolerance of SZNZ9F5V1T5G?
The SZNZ9F5V1T5G has a Zener voltage range of 4.85 V to 5.36 V at 5 mA test current, corresponding to ±5% tolerance around the nominal 5.1 V rating. This tolerance is guaranteed across the full operating temperature range and is verified per AEC-Q101 stress testing protocols. The SZNZ9F5V1T5G datasheet specifies this range explicitly in the Electrical Characteristics table on page 3.
Is SZNZ9F5V1T5G qualified for automotive use?
Yes, the SZNZ9F5V1T5G carries the "SZ" prefix indicating automotive-grade qualification per AEC-Q101, with PPAP capability and site-specific process controls. It is rated for junction temperatures from −65 °C to +150 °C and validated for mechanical shock, temperature cycling, and humidity exposure per automotive reliability standards. The SZNZ9F5V1T5G meets these requirements without derating in standard mounting configurations.
What is the maximum Zener impedance for SZNZ9F5V1T5G?
The maximum Zener impedance (ZZT) for SZNZ9F5V1T5G is 80 Ω, measured at the specified test current of 5 mA and ambient temperature of 25 °C. This value reflects dynamic resistance during regulation and directly impacts voltage stability under varying load conditions. The SZNZ9F5V1T5G maintains this impedance specification across its qualified operating temperature range.
Does SZNZ9F5V1T5G have RoHS and halogen-free compliance?
Yes, the SZNZ9F5V1T5G is Pb-Free, Halogen Free/BFR Free, and fully RoHS compliant per Directive 2011/65/EU. Its matte tin lead finish, UL 94 V-0 epoxy mold compound, and absence of restricted substances are confirmed in the Mechanical Characteristics section of the official onsemi datasheet. The SZNZ9F5V1T5G also meets JEDEC J-STD-020 moisture sensitivity level 1 requirements.
What is the thermal resistance of SZNZ9F5V1T5G?
The thermal resistance from junction-to-ambient (RJA) for SZNZ9F5V1T5G is 500 °C/W when mounted on an FR-5 board, as specified in the Maximum Ratings table. This value assumes minimum pad layout per the datasheet's note 1 and governs thermal derating: power must be reduced by 2.0 mW per °C above 25 °C ambient. The SZNZ9F5V1T5G's SOD-923 package contributes directly to this RJA performance.
SZNZ9F5V1T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- -
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
SZNZ9F5V1T5G FAQ
1.How can I place an order for SZNZ9F5V1T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ9F5V1T5G 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 SZNZ9F5V1T5G reliable?
The price and inventory of SZNZ9F5V1T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ9F5V1T5G is usually 5 days.
3.What payment methods are accepted for SZNZ9F5V1T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ9F5V1T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ9F5V1T5G?
SZNZ9F5V1T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ9F5V1T5G 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 SZNZ9F5V1T5G?
For technical support, including SZNZ9F5V1T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ9F5V1T5G requirements.
6.How does Aetrix verify that SZNZ9F5V1T5G is sourced from the original manufacturer or authorized distributors?
All SZNZ9F5V1T5G 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 SZNZ9F5V1T5G meets industry standards.
7.What is the process for return or replacement of SZNZ9F5V1T5G?
All SZNZ9F5V1T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ9F5V1T5G, 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 SZNZ9F5V1T5G part is unused and in its original packaging.
Return procedure for SZNZ9F5V1T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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