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onsemi SZMM3Z7V5ST1G
- Part No.:
- SZMM3Z7V5ST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z7V5ST1G.pdf
- Description:
- DIODE ZENER 7.5V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,290
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Product details
Overview
SZMM3Z7V5ST1G from onsemi is a 7.5 V ±3.4% Zener diode in SOD−323 package, rated for 500 mW steady-state power dissipation and 160 Ω dynamic impedance at 5 mA test current, used for precision voltage regulation and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM3Z7V5ST1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±3.4%), low capacitance (140 pF), AEC−Q101 qualification, tight thermal coefficient (+2.5 mV/°C), and SOD−323 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at 7.28–7.60 V under 5 mA test current. Its 160 Ω Zener impedance at IZT and 15 Ω at IZK = 0.5 mA support stable regulation across load transients.
Designed for automotive-grade reliability, SZMM3Z7V5ST1G features Class 3 ESD rating (>16 kV HBM), Pb-free/RoHS-compliant construction, and operation across −65°C to +150°C junction temperature range, with thermal resistance of 250°C/W on optimized PCB heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.28 V min to 7.60 V max at 5 mA - defines precise clamping threshold for 7.5 V nominal rail protection |
| Power Dissipation (PD) | 500 mW - supports continuous regulation without derating up to 25°C ambient on standard FR-4 board |
| Zener Impedance (ZZT) | 160 Ω max at 5 mA - ensures minimal output voltage variation under moderate current changes |
| Reverse Leakage (IR) | 1.0 μA max at 5.0 V - enables low-quiescent-power standby regulation in battery-powered systems |
| Capacitance (C) | 140 pF max at 0 V, 1 MHz - limits high-frequency noise coupling in signal-path protection circuits |
| Temperature Coefficient | +2.5 mV/°C - provides predictable, low-drift voltage reference over industrial temperature range |
| ESD Rating | Class 3 (>16 kV HBM) - withstands handling and system-level electrostatic discharge events |
Pinout & Package
SOD−323 surface-mount package: 1.70 mm × 1.25 mm × 0.85 mm body, cathode indicated by polarity band, compatible with reflow soldering at 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential reference; completes conduction path during breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Tight VZ tolerance | ±3.4% (7.28–7.60 V) - reduces need for post-production calibration in voltage-reference designs |
| AEC−Q101 qualification | Automotive-grade reliability validation - supports use in infotainment, ADAS sensor interfaces, and body control modules |
| Low-profile SOD−323 | 0.85 mm height - enables placement beneath connectors or in stacked PCB assemblies |
| Pb-free & RoHS compliant | No lead, halogen-free/BFR-free materials - meets global environmental compliance requirements for consumer and automotive shipments |
| High ESD immunity | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in handheld and wearable end equipment |
Applications
| Smartphone Power Rail Protection | Automotive Camera Module Biasing |
|---|---|
Use Scenario: Protecting 7.5 V camera sensor bias rail from transient surges during hot-plug insertion or ESD events. IC Role / Device Role / Timing Role: Two-terminal shunt regulator clamping voltage to prevent damage to image sensor analog front-end. Use Value: 140 pF capacitance avoids signal integrity degradation on high-speed MIPI CSI-2 lines adjacent to the rail. | Use Scenario: Providing stable 7.5 V reference for CCD/CMOS image sensor bias in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Precision voltage reference with +2.5 mV/°C tempco ensuring consistent pixel response across −40°C to +105°C operating range. Use Value: AEC−Q101 qualification guarantees long-term stability in automotive under-hood environments. |
| USB-C PD Adapter Feedback Network | Industrial IoT Sensor Node Reference |
Use Scenario: Acting as secondary-side Zener clamp in optocoupler feedback loop of 7.5 V auxiliary rail in USB-C power delivery adapters. IC Role / Device Role / Timing Role: Voltage reference element setting error amplifier trip point for overvoltage shutdown. Use Value: 160 Ω ZZT ensures fast response to output overvoltage, limiting fault duration to <100 μs. | Use Scenario: Supplying accurate 7.5 V reference for 16-bit ADC in battery-powered environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-leakage (1.0 μA max) shunt reference enabling multi-year battery life in sleep-mode operation. Use Value: SOD−323 footprint allows integration into compact 12 mm × 12 mm sensor PCBs without sacrificing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B7V5,115 | Same 7.5 V nominal, ±5% tolerance (wider than SZMM3Z7V5ST1G's ±3.4%), SOD-323, 300 mW rating | Lacks AEC−Q101 qualification and Class 3 ESD rating; suitable for commercial-grade consumer products only | Select when cost sensitivity outweighs automotive qualification and tighter tolerance requirements |
| MMSZ5235B-TP | 7.5 V nominal, ±5% tolerance, SOD-123, 500 mW rating, 150 Ω ZZT, no AEC−Q101 or Class 3 ESD | Larger SOD-123 footprint (2.7 mm × 1.4 mm vs. 1.7 mm × 1.25 mm); incompatible with ultra-dense layouts | Choose only if existing design uses SOD-123 land pattern and tolerance relaxation is acceptable |
Compared with BZX384-B7V5,115 and MMSZ5235B-TP, SZMM3Z7V5ST1G delivers tighter voltage tolerance, automotive qualification, and smaller footprint-critical for next-generation portable and automotive electronics where space, reliability, and precision are non-negotiable.
Availability
SZMM3Z7V5ST1G is available at Aetrix Electronics and suitable for smartphone power management, automotive camera modules, USB-C PD adapter feedback networks, and industrial IoT sensor node references requiring stable component supply and full traceability.
Supply support for SZMM3Z7V5ST1G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZMM3Z7V5ST1G belongs to the SZMM3ZxxxST1G series of AEC−Q101-qualified Zener diodes engineered specifically for high-reliability voltage regulation in automotive electronics and space-constrained portable devices.
FAQ
What is the exact Zener voltage range specified for SZMM3Z7V5ST1G at 5 mA test current?
The SZMM3Z7V5ST1G has a guaranteed Zener voltage range of 7.28 V minimum to 7.60 V maximum when tested at 5 mA (IZT). This corresponds to a nominal 7.5 V rating with ±3.4% tolerance, verified per onsemi's March 2025 Rev. 27 datasheet electrical characteristics table.
Is SZMM3Z7V5ST1G qualified for automotive applications?
Yes, SZMM3Z7V5ST1G is AEC−Q101 qualified and PPAP capable, as explicitly stated in the onsemi datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements, confirming its suitability for automotive subsystems including camera modules and body electronics.
What is the maximum Zener impedance of SZMM3Z7V5ST1G and at what condition is it measured?
The maximum Zener impedance (ZZT) of SZMM3Z7V5ST1G is 160 Ω, measured at the specified test current of 5 mA (IZT) and 10% modulation. This value reflects dynamic impedance under typical regulation conditions and is critical for assessing voltage stability during load transients.
Does SZMM3Z7V5ST1G have an ESD rating, and if so, what is it?
SZMM3Z7V5ST1G carries a Class 3 ESD rating per Human Body Model (HBM) exceeding 16 kV, as confirmed in the onsemi datasheet's Specification Features section. This high immunity level eliminates the need for additional discrete ESD protection in most handheld and automotive interface applications.
What is the package type and physical size of SZMM3Z7V5ST1G?
SZMM3Z7V5ST1G uses the SOD−323 surface-mount package (Case 477, Style 1), with dimensions of 1.70 mm × 1.25 mm × 0.85 mm. The cathode is marked by a polarity band on pin 1, and the device is rated for reflow soldering at 260°C for 10 seconds.
SZMM3Z7V5ST1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SZMM3Z7V5ST1G FAQ
1.How can I place an order for SZMM3Z7V5ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z7V5ST1G 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 SZMM3Z7V5ST1G reliable?
The price and inventory of SZMM3Z7V5ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z7V5ST1G is usually 5 days.
3.What payment methods are accepted for SZMM3Z7V5ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z7V5ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z7V5ST1G?
SZMM3Z7V5ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z7V5ST1G 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 SZMM3Z7V5ST1G?
For technical support, including SZMM3Z7V5ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z7V5ST1G requirements.
6.How does Aetrix verify that SZMM3Z7V5ST1G is sourced from the original manufacturer or authorized distributors?
All SZMM3Z7V5ST1G 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 SZMM3Z7V5ST1G meets industry standards.
7.What is the process for return or replacement of SZMM3Z7V5ST1G?
All SZMM3Z7V5ST1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z7V5ST1G, 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 SZMM3Z7V5ST1G part is unused and in its original packaging.
Return procedure for SZMM3Z7V5ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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