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onsemi SZNZ9F2V4T5G
- Part No.:
- SZNZ9F2V4T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
SZNZ9F2V4T5G.pdf
- Description:
- DIODE ZENER 2.4V 250MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:6,727
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Product details
Overview
SZNZ9F2V4T5G from onsemi is an automotive-grade Zener diode in SOD-923 package, providing 2.4 V nominal Zener voltage regulation at 5 mA test current, with ±0.12 V tolerance (2.28 V to 2.52 V), 250 mW power rating, and AEC-Q101 qualification for voltage clamping in space-constrained portable electronics.
For engineers reviewing the SZNZ9F2V4T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, low-profile SOD-923 footprint, 16 kV HBM ESD robustness, thermal derating behavior, and automotive qualification status.
Technical Context
This device operates as a two-terminal voltage reference and transient clamp, leveraging silicon PN junction reverse breakdown at precisely controlled 2.4 V nominal voltage. Its operation requires no external biasing-only a series current-limiting resistor-and maintains stable regulation across −65 °C to +150 °C junction temperature range.
The SZNZ9F2V4T5G exhibits 100 Ω maximum Zener impedance at 5 mA test current and 1000 Ω at knee current (IZK = 1 mA), enabling predictable clamping response under varying load and surge conditions. Its −3.5 mV/°C temperature coefficient ensures minimal drift over industrial temperature spans.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.28 V to 2.52 V @ IZT = 5 mA - defines precise clamping threshold for low-voltage rail protection |
| Power Dissipation | 250 mW @ TA = 25 °C - sets maximum continuous steady-state energy handling on FR-5 board |
| Zener Impedance | 100 Ω max @ IZT, 1000 Ω max @ IZK - determines voltage deviation under dynamic current changes |
| ESD Rating | Class 3 (>16 kV) HBM - enables direct integration into handheld interfaces without added ESD protection |
| Package | SOD-923 (1.00 mm × 0.60 mm × 0.40 mm) - supports high-density PCB layouts in mobile and wearables |
| Temperature Coefficient | −3.5 mV/°C - quantifies voltage drift per degree, critical for stable reference in thermally variable environments |
| Leakage Current | 1 μA max @ VR = 1 V - ensures minimal standby power loss in battery-powered systems |
Pinout & Package
SOD-923 surface-mount package: ultra-compact 2-pin case (Case 514AB), void-free thermosetting plastic body, matte tin lead finish, MSL 1 rated, 260 °C reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked Band) | Cathode | Connected to regulated voltage rail; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential node; completes current path during clamping operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including infotainment power rails and sensor interface protection |
| Pb-Free, Halogen-Free | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 3 moisture sensitivity |
| Low Profile Height | 0.40 mm max - enables stacking under shields or placement beneath connectors in slim devices |
| High ESD Robustness | 16 kV HBM - eliminates need for discrete TVS in many USB, button, and I²C line designs |
| Stable Low-Voltage Reference | 2.4 V ±5% tolerance - suitable for biasing low-dropout regulators or ADC reference dividers |
Applications
| Smartphone Power Management | Automotive Cabin Sensors |
|---|---|
Use Scenario: Clamping 3.3 V I/O lines against ESD events and supply transients in LTE modem modules. IC Role / Device Role / Timing Role: Two-terminal shunt regulator protecting baseband processor GPIOs. Use Value: Prevents latch-up and damage using only 0.6 mm² board area while meeting IEC 61000-4-2 Level 4 requirements. | Use Scenario: Stabilizing 2.5 V reference for MEMS pressure sensor signal conditioning in HVAC control units. IC Role / Device Role / Timing Role: Precision Zener voltage source for ratiometric ADC excitation. Use Value: Delivers <±1% output stability over −40 °C to +125 °C without trimming, reducing calibration steps. |
| Wearable Battery Monitoring | Industrial IoT Edge Node |
Use Scenario: Providing accurate 2.4 V reference for fuel gauge ICs in compact earbud charging cases. IC Role / Device Role / Timing Role: Low-drift voltage reference for coulomb counting circuitry. Use Value: Enables ±0.5% state-of-charge accuracy over full temperature range due to matched TC and tight VZ tolerance. | Use Scenario: Protecting RS-485 transceiver VCC pins from induced surges in factory automation gateways. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on isolated power domain outputs. Use Value: Limits transient overshoot to <3.0 V within 10 ns, preventing transceiver latch-up without adding capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C2V4 | Same 2.4 V nominal Zener voltage but SOD-523 package (0.8 × 0.6 × 0.5 mm); 200 mW rating; no AEC-Q101 qualification | Lacks automotive qualification; slightly taller profile limits use in ultra-thin assemblies | Select when cost sensitivity outweighs automotive compliance and height constraints are relaxed |
| MMSZ4676T1G | 2.4 V Zener in SOD-123 package (3.7 × 1.6 × 1.1 mm); 500 mW rating; AEC-Q101 qualified | 3.5× larger footprint and higher thermal mass; better for higher-power dissipation needs | Select when board space permits and >250 mW clamping energy is required |
Compared with BZX584C2V4 and MMSZ4676T1G, the SZNZ9F2V4T5G uniquely balances automotive qualification, ultra-low profile (0.4 mm height), and tight 2.4 V tolerance in the smallest standard package-making it optimal for next-gen portable and automotive edge nodes where volume and reliability are co-constrained.
Availability
SZNZ9F2V4T5G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin sensors, wearable battery monitoring, and industrial IoT edge node designs requiring stable component supply and long-term lifecycle support.
Supply support for SZNZ9F2V4T5G 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 designed specifically for space-constrained, high-reliability voltage regulation and ESD protection in portable and automotive electronics-emphasizing miniaturization, AEC-Q101 compliance, and robust parametric consistency.
FAQ
What is the Zener voltage tolerance of the SZNZ9F2V4T5G?
The SZNZ9F2V4T5G has a guaranteed Zener voltage range of 2.28 V to 2.52 V at IZT = 5 mA and TA = 25 °C, representing ±5% tolerance around the nominal 2.4 V rating. This tight tolerance is maintained across its qualified operating temperature range and supports precision clamping in low-voltage systems where margin is constrained.
Is the SZNZ9F2V4T5G suitable for automotive applications?
Yes, the SZNZ9F2V4T5G is explicitly AEC-Q101 qualified and PPAP capable, with "SZ" prefix indicating automotive-grade process controls and site-specific change management. It meets stringent reliability, thermal, and ESD requirements for use in cabin sensors, infotainment power domains, and body control modules.
What is the maximum power dissipation for the SZNZ9F2V4T5G at 85 °C ambient?
At 85 °C ambient, the SZNZ9F2V4T5G's power dissipation must be derated linearly from 250 mW at 25 °C using the 2.0 mW/°C slope specified in the datasheet. This yields 250 mW − (85 − 25) × 2.0 mW = 130 mW maximum continuous dissipation, ensuring safe junction temperature operation below 150 °C.
How is polarity identified on the SZNZ9F2V4T5G SOD-923 package?
The SZNZ9F2V4T5G uses Style 1 marking: a cathode band (dark stripe or microdot) adjacent to Pin 1. Pin 1 is the cathode terminal; Pin 2 is the anode. This polarity identification is consistent across all SZNZ9FxxxT5G variants and aligns with JEDEC SOD-923 mechanical drawings (Case 514AB).
Does the SZNZ9F2V4T5G require external current limiting in circuit design?
Yes, the SZNZ9F2V4T5G requires an external series current-limiting resistor to establish the desired Zener operating current (typically 1–10 mA). Without this resistor, excessive current can exceed the 250 mW power rating and cause thermal failure. The resistor value is calculated using (VIN − VZ) / IZ, where VIN is the applied voltage and IZ is the target Zener current.
SZNZ9F2V4T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 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
SZNZ9F2V4T5G FAQ
1.How can I place an order for SZNZ9F2V4T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ9F2V4T5G 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 SZNZ9F2V4T5G reliable?
The price and inventory of SZNZ9F2V4T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ9F2V4T5G is usually 5 days.
3.What payment methods are accepted for SZNZ9F2V4T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ9F2V4T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ9F2V4T5G?
SZNZ9F2V4T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ9F2V4T5G 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 SZNZ9F2V4T5G?
For technical support, including SZNZ9F2V4T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ9F2V4T5G requirements.
6.How does Aetrix verify that SZNZ9F2V4T5G is sourced from the original manufacturer or authorized distributors?
All SZNZ9F2V4T5G 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 SZNZ9F2V4T5G meets industry standards.
7.What is the process for return or replacement of SZNZ9F2V4T5G?
All SZNZ9F2V4T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ9F2V4T5G, 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 SZNZ9F2V4T5G part is unused and in its original packaging.
Return procedure for SZNZ9F2V4T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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