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onsemi SZNZ9F15VT5G
- Part No.:
- SZNZ9F15VT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
SZNZ9F15VT5G.pdf
- Description:
- DIODE ZENER 15V 250MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:849
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Product details
Overview
SZNZ9F15VT5G from onsemi is a 15 V Zener voltage regulator diode in SOD-923 surface-mount package, rated for 250 mW steady-state power dissipation, with ±0.75 V Zener voltage tolerance (14.25–15.75 V @ 5 mA), 42 Ω maximum Zener impedance at test current, and 0.1 μA reverse leakage at 12 V. It provides precision voltage clamping in space-constrained portable power rails.
For engineers reviewing the SZNZ9F15VT5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, low-profile SOD-923 footprint compatibility, AEC-Q101 qualification for automotive use, and 16 kV HBM ESD robustness in high-density PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable reference voltage across its cathode-anode terminals when reverse-biased above its breakdown threshold. Its 15 V nominal Zener voltage is specified at 5 mA test current with temperature coefficient of +9.2 mV/°C and 70 pF junction capacitance at 0 V.
The SZNZ9F15VT5G uses silicon planar Zener technology in a void-free thermosetting plastic package (UL 94 V-0), with 100% matte tin lead finish, MSL 1 rating, and qualified reflow up to 260 °C - enabling compatibility with standard high-volume SMT assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.25–15.75 V @ IZT = 5 mA - defines clamping threshold for overvoltage protection in 15 V rail monitoring |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C - sets maximum continuous thermal load without derating |
| Zener Impedance (ZZT) | 42 Ω max @ IZT = 5 mA - determines regulation stiffness under dynamic load transients |
| Reverse Leakage (IR) | 0.1 μA @ VR = 12 V - ensures minimal standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV) HBM - supports robust handling in manual assembly and field-replaceable modules |
| Junction Temp Range | −65 °C to +150 °C - enables operation in automotive under-hood and industrial control environments |
| Package | SOD-923 (1.00 × 0.60 × 0.40 mm) - fits 0402-class board area with ultra-low profile for stacked PCBs |
Pinout & Package
SOD-923 is a 2-pin surface-mount package with cathode marked by polarity band; body dimensions are 1.00 mm × 0.60 mm × 0.40 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased Zener terminal | Connected to regulated voltage node; carries clamping current during overvoltage events |
| 2 (Anode) | Reference/ground terminal | Tied to system ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Pb-Free / RoHS Compliant | Meets global environmental compliance requirements for consumer and industrial end equipment |
| Low Profile Height (0.40 mm) | Enables integration beneath connectors or in multi-layer flex-rigid assemblies |
| High ESD Robustness (16 kV HBM) | Reduces need for external ESD protection in handheld and wearable designs |
| Stable Temperature Coefficient (+9.2 mV/°C) | Minimizes drift-induced error in precision reference circuits across −40 °C to +125 °C |
Applications
| USB Power Delivery Clamp | Automotive Cabin Controller Reference |
|---|---|
Use Scenario: Clamping transient surges on 15 V auxiliary USB PD input rails in vehicle infotainment head units. IC Role / Device Role / Timing Role: Shunt regulator providing overvoltage protection upstream of DC-DC converters. Use Value: Prevents damage to downstream PMICs using precise 15 V clamping with <0.1 μA leakage at 12 V standby. | Use Scenario: Supplying stable 15 V reference for microcontroller ADC biasing in HVAC control modules. IC Role / Device Role / Timing Role: Precision voltage reference source for analog sensing subsystems. Use Value: Delivers ±0.75 V tolerance and +9.2 mV/°C TC to maintain ADC accuracy over full automotive temperature range. |
| Portable Medical Sensor Bias | Industrial PLC I/O Module Protection |
Use Scenario: Providing regulated bias voltage for MEMS pressure sensor excitation in handheld diagnostic tools. IC Role / Device Role / Timing Role: Low-power Zener reference ensuring consistent sensor output scaling. Use Value: Enables battery life extension via 0.1 μA leakage and compact SOD-923 footprint in space-limited enclosures. | Use Scenario: Protecting 15 V fieldbus interface inputs against induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Transient voltage suppressor for RS-485 or CAN physical layer receivers. Use Value: Absorbs repetitive 16 kV ESD strikes without degradation, validated per AEC-Q101 stress protocols. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C15LT1G | Same 15 V nominal Zener voltage but higher 500 mW power rating; SOD-323 package (1.7 × 1.3 mm) | Larger footprint limits use in ultra-dense layouts; better suited for higher-energy transients | Select when surge energy exceeds 250 mW capability but board area allows SOD-323 |
| MMSZ5245BT1G | 15 V Zener with 500 mW rating and 17 Ω ZZT; SOD-123 package (3.7 × 1.6 mm) | Significantly larger size and different thermal resistance (310 °C/W vs. 500 °C/W) | Choose for legacy designs with SOD-123 footprints or where lower impedance is critical |
Compared with BZX584C15LT1G and MMSZ5245BT1G, the SZNZ9F15VT5G offers the smallest board area and AEC-Q101 qualification, making it optimal for next-gen automotive and portable electronics where space, reliability, and regulatory compliance are prioritized over raw power handling.
Availability
SZNZ9F15VT5G is available at Aetrix Electronics and suitable for automotive cabin controllers, USB PD clamp circuits, portable medical sensors, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term sourcing.
Supply support for SZNZ9F15VT5G 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 manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The NZ9F/SZNZ9F series is designed specifically for compact, high-reliability voltage regulation in space-constrained portable and automotive electronics - emphasizing low profile, AEC-Q101 compliance, and robust ESD performance.
FAQ
What is the Zener voltage tolerance of SZNZ9F15VT5G at 5 mA test current?
The SZNZ9F15VT5G has a Zener voltage range of 14.25 V to 15.75 V at IZT = 5 mA, corresponding to ±0.75 V absolute tolerance. This specification is measured at TA = 25 °C per the onsemi datasheet, and the device maintains this tolerance across its qualified operating temperature range when used within derated power limits.
Is SZNZ9F15VT5G qualified for automotive applications?
Yes, the SZNZ9F15VT5G carries the "SZ" prefix indicating AEC-Q101 qualification and PPAP capability. It is explicitly rated for automotive use per the manufacturer's documentation, with validation covering temperature cycling, humidity testing, and mechanical shock - making it suitable for engine control, body electronics, and ADAS subsystems where reliability is critical.
What is the maximum junction-to-ambient thermal resistance (RJA) for SZNZ9F15VT5G?
The SZNZ9F15VT5G has a maximum junction-to-ambient thermal resistance of 500 °C/W when mounted on an FR-5 board at TA = 25 °C. This value reflects the thermal performance of the SOD-923 package under standard JEDEC test conditions and must be factored into power derating calculations for elevated ambient temperatures.
Does SZNZ9F15VT5G have a polarity marking, and how is it identified?
Yes, the SZNZ9F15VT5G uses Style 1 marking per the SOD-923 mechanical drawing: Pin 1 (cathode) is identified by a polarity band on the package body. The marking code "Q*" appears adjacent to the band, and the cathode terminal must be connected to the higher-potential node for proper Zener operation in reverse-bias configuration.
What is the reverse leakage current specification for SZNZ9F15VT5G at 12 V?
The SZNZ9F15VT5G specifies a maximum reverse leakage current (IR) of 0.1 μA at VR = 12 V and TA = 25 °C. This low leakage supports extended battery life in always-on portable systems and ensures minimal loading on sensitive reference nodes in precision analog circuits.
SZNZ9F15VT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 42 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 11 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
SZNZ9F15VT5G FAQ
1.How can I place an order for SZNZ9F15VT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ9F15VT5G 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 SZNZ9F15VT5G reliable?
The price and inventory of SZNZ9F15VT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ9F15VT5G is usually 5 days.
3.What payment methods are accepted for SZNZ9F15VT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ9F15VT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ9F15VT5G?
SZNZ9F15VT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ9F15VT5G 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 SZNZ9F15VT5G?
For technical support, including SZNZ9F15VT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ9F15VT5G requirements.
6.How does Aetrix verify that SZNZ9F15VT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ9F15VT5G 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 SZNZ9F15VT5G meets industry standards.
7.What is the process for return or replacement of SZNZ9F15VT5G?
All SZNZ9F15VT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ9F15VT5G, 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 SZNZ9F15VT5G part is unused and in its original packaging.
Return procedure for SZNZ9F15VT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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