My Inquiry
My Account
onsemi SZNZ9F7V5ST5G
- Part No.:
- SZNZ9F7V5ST5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
SZNZ9F7V5ST5G.pdf
- Description:
- DIODE ZENER 7.5V 250MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZNZ9F7V5ST5G from onsemi is a 7.28 V to 7.60 V Zener diode in SOD-923 package, rated for 250 mW steady-state power dissipation, with 30 Ω max Zener impedance at 5 mA test current and ±16 kV ESD rating (HBM Class 3), used for precision voltage regulation and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZNZ9F7V5ST5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±2.1% at 25 °C), low-profile 0.40 mm height, AEC-Q101 qualification, Pb-free matte tin finish, and thermal resistance of 500 °C/W.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at its specified VZ range. It exhibits tight Zener voltage tolerance (±2.1%), low dynamic impedance (30 Ω max at IZT = 5 mA), and stable temperature coefficient (+2.5 mV/°C).
Designed for surface-mount applications on FR-4 PCBs, it supports reflow up to 260 °C (MSL 1), features void-free thermosetting plastic encapsulation (UL 94 V-0), and delivers reliable regulation under transient overvoltage conditions in high-density layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.28 V min to 7.60 V max at IZT = 5 mA - defines clamping threshold with ±2.1% tolerance |
| Power Dissipation (PD) | 250 mW at TA = 25 °C - limits continuous thermal load on small PCB areas |
| Zener Impedance (ZZT) | 30 Ω max at IZT = 5 mA - ensures minimal voltage shift under load variation |
| ESD Rating (HBM) | >16 kV - provides robust handling immunity without external protection |
| Package Dimensions | 1.00 mm × 0.60 mm × 0.40 mm - enables placement in ultra-dense mobile PCBs |
| Temperature Coefficient | +2.5 mV/°C - quantifies VZ drift across operating range (−65 °C to +150 °C) |
| Reverse Leakage (IR) | 0.5 μA max at VR = 4 V - guarantees low standby current in battery-powered systems |
Pinout & Package
SZNZ9F7V5ST5G is housed in a SOD-923 (Case 514AB) surface-mount package with 2 terminals: cathode marked by polarity band, anode unmarked. Body dimensions are 1.00 mm × 0.60 mm × 0.40 mm; mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased during Zener operation |
| 2 (Unmarked End) | Anode | Connected to ground or reference potential; completes conduction path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling and HTRB |
| Pb-Free Matte Tin Finish | RoHS-compliant termination compatible with lead-free reflow and eliminates tin whisker risk |
| Tight VZ Tolerance | ±2.1% at 25 °C enables accurate voltage reference without trimming resistors |
| Low Profile Height | 0.40 mm max allows stacking under shields or beneath connectors in slim devices |
| MSL 1 Rating | No moisture sensitivity precautions required - simplifies manufacturing logistics |
Applications
| Smartphone Power Rail Protection | Wearable Sensor Biasing |
|---|---|
Use Scenario: Clamping 3.3 V or 5 V supply rails against ESD transients and load dump spikes in compact smartphone mainboard designs. IC Role / Device Role: Zener voltage regulator acting as shunt protector between rail and ground. Use Value: Prevents damage to PMICs and baseband ICs using only 1.00 mm × 0.60 mm footprint and no external components. | Use Scenario: Providing stable bias voltage for MEMS accelerometers and optical heart-rate sensors in fitness trackers. IC Role / Device Role: Precision voltage reference source with low temperature drift (+2.5 mV/°C). Use Value: Maintains sensor accuracy across −20 °C to +70 °C ambient without calibration compensation circuitry. |
| USB-C Port Overvoltage Clamp | Industrial IoT Node Voltage Reference |
Use Scenario: Protecting USB-C CC logic pins and VCONN regulators from accidental 12 V or 20 V misconnection events. IC Role / Device Role: Fast-response shunt clamp activated at 7.5 V nominal breakdown. Use Value: Absorbs >250 mW surge energy within 100 ns while occupying <0.6 mm² board area. | Use Scenario: Generating stable 7.5 V reference for ADC front-end and isolated signal conditioning in battery-powered edge nodes. IC Role / Device Role: Low-drift, low-noise Zener reference replacing larger TO-92 or SOT-23 alternatives. Use Value: Enables 12-bit measurement accuracy with <0.5% total error over full industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C7V5 | 7.5 V nominal, ±5% tolerance, 350 mW rating, SOD-523 package (1.2 × 0.8 mm) | Higher power but looser tolerance and larger footprint - less suitable for precision rail clamping | Prefer when higher surge energy absorption is needed and board space permits 2× larger outline |
| MMSZ5237BT1G | 7.5 V nominal, ±5% tolerance, 500 mW rating, SOD-123 package (3.7 × 1.6 mm) | Higher power and thermal mass but 6× larger footprint - incompatible with ultra-dense layouts | Choose when thermal margin is critical and layout allows ≥3.7 mm length |
Compared with BZX584C7V5 and MMSZ5237BT1G, SZNZ9F7V5ST5G offers tighter voltage tolerance (±2.1% vs. ±5%), smallest footprint (1.00 × 0.60 mm), and AEC-Q101 qualification - making it optimal for space-constrained, high-reliability portable and automotive subsystems where precise clamping is required.
Availability
SZNZ9F7V5ST5G is available at Aetrix Electronics and suitable for smartphone power rail protection, wearable sensor biasing, and USB-C port overvoltage clamping requiring stable component supply and consistent Zener voltage performance.
Supply support for SZNZ9F7V5ST5G 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
SZNZ9F7V5ST5G belongs to the NZ9F/SZNZ9F series of 250 mW Zener regulators designed specifically for ultra-compact, high-reliability voltage reference and transient suppression in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of SZNZ9F7V5ST5G at 25 °C?
The SZNZ9F7V5ST5G has a Zener voltage range of 7.28 V to 7.60 V at IZT = 5 mA and TA = 25 °C, corresponding to a ±2.1% tolerance. This tight specification is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet and enables accurate voltage clamping without post-production trimming. The SZNZ9F7V5ST5G achieves this via process-controlled doping and wafer-level screening.
Is SZNZ9F7V5ST5G qualified for automotive applications?
Yes, SZNZ9F7V5ST5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section. The "SZ" prefix denotes compliance with automotive site and control change requirements. Its qualification covers temperature cycling, HTRB, and ESD testing per AEC-Q101 Rev D, making SZNZ9F7V5ST5G suitable for body electronics and infotainment subsystems.
What is the maximum Zener impedance of SZNZ9F7V5ST5G and at what test condition?
The maximum Zener impedance (ZZT) of SZNZ9F7V5ST5G is 30 Ω, measured at IZT = 5 mA and TA = 25 °C. This value is specified in the Electrical Characteristics table on page 3 and reflects dynamic resistance during regulation - critical for maintaining stable voltage under varying load currents. Lower ZZT minimizes output deviation in SZNZ9F7V5ST5G-based reference circuits.
Does SZNZ9F7V5ST5G have a Pb-free finish and RoHS compliance?
Yes, SZNZ9F7V5ST5G features a 100% matte tin (Sn) lead finish and is Pb-free, as confirmed in the Mechanical Characteristics section and ordering information. It meets RoHS Directive 2011/65/EU and is marked with "G" or microdot per onsemi's tape-and-reel packaging specification BRD8011/D. The SZNZ9F7V5ST5G epoxy also complies with UL 94 V-0 flammability rating.
What is the thermal resistance junction-to-ambient for SZNZ9F7V5ST5G on FR-4 board?
The thermal resistance junction-to-ambience (RJA) of SZNZ9F7V5ST5G is 500 °C/W when mounted on an FR-4 board with minimum pad, as specified in the Maximum Ratings table. This value assumes standard JEDEC test conditions and directly determines allowable power derating above 25 °C - for example, SZNZ9F7V5ST5G must be derated by 2.0 mW/°C above ambient. This RJA is typical for SOD-923 packages with minimal copper area.
SZNZ9F7V5ST5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZNZ9F2V4ST5G
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±2.13%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 4 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
SZNZ9F7V5ST5G FAQ
1.How can I place an order for SZNZ9F7V5ST5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ9F7V5ST5G 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 SZNZ9F7V5ST5G reliable?
The price and inventory of SZNZ9F7V5ST5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ9F7V5ST5G is usually 5 days.
3.What payment methods are accepted for SZNZ9F7V5ST5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ9F7V5ST5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ9F7V5ST5G?
SZNZ9F7V5ST5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ9F7V5ST5G 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 SZNZ9F7V5ST5G?
For technical support, including SZNZ9F7V5ST5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ9F7V5ST5G requirements.
6.How does Aetrix verify that SZNZ9F7V5ST5G is sourced from the original manufacturer or authorized distributors?
All SZNZ9F7V5ST5G 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 SZNZ9F7V5ST5G meets industry standards.
7.What is the process for return or replacement of SZNZ9F7V5ST5G?
All SZNZ9F7V5ST5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ9F7V5ST5G, 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 SZNZ9F7V5ST5G part is unused and in its original packaging.
Return procedure for SZNZ9F7V5ST5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZNZ9F7V5ST5G Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
