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onsemi SZMM5Z2V4T1G
- Part No.:
- SZMM5Z2V4T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z2V4T1G.pdf
- Description:
- DIODE ZENER 2.4V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,531
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Product details
Overview
SZMM5Z2V4T1G from onsemi is a 2.4 V ±8.3% Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 100 Ω max Zener impedance at 5 mA test current and 1.0 μA max reverse leakage at 1.0 V, used for precision voltage clamping and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM5Z2V4T1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±8.3%), thermal resistance (250 °C/W), ESD rating (>16 kV HBM), AEC-Q101 qualification, and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable 2.4 V across its terminals under controlled current conditions. Its 5 mA Zener test current (IZT) and 1 mA knee current (IZK) define regulation onset and low-current stability boundaries.
The SOD-523 package enables surface-mount integration with minimal board area (1.20 mm × 0.80 mm) and low profile (0.7 mm height), while its 250 °C/W junction-to-ambient thermal resistance governs derating above 25 °C per the published curve (4.0 mW/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.4 V nominal, min 2.2 V / max 2.6 V at IZT = 5 mA - defines clamping threshold with ±8.3% tolerance |
| Power Dissipation (PD) | 500 mW at TA = 25 °C - sets maximum continuous power handling on FR-4 board |
| Zener Impedance (ZZT) | ≤100 Ω at IZT = 5 mA - determines voltage regulation stiffness under dynamic load changes |
| Reverse Leakage (IR) | ≤1.0 μA at VR = 1.0 V - ensures minimal standby current in undervoltage detection circuits |
| ESD Rating | >16 kV per Human Body Model - provides robust electrostatic immunity for handheld device interfaces |
| Thermal Resistance (RJA) | 250 °C/W - dictates temperature rise per milliwatt, critical for thermal design in sealed enclosures |
| AEC-Q101 Qualified | Yes - confirms reliability validation for automotive-grade applications including infotainment and body control modules |
Pinout & Package
SOD-523 surface-mount package: 1.20 mm × 0.80 mm body, 0.7 mm height, matte tin lead finish, MSL 1, reflow capable up to 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; polarity band identifies cathode for correct orientation during placement |
| 2 | Anode | Connected to ground or lower-potential reference; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q101 qualified and PPAP capable - supports direct use in automotive ECUs without additional qualification effort |
| Pb-Free & RoHS Compliant | 100% matte Sn lead finish, UL 94 V-0 epoxy - meets global environmental compliance and soldering standards |
| High-Density Footprint | SOD-523 outline (1.20 mm × 0.80 mm) - enables placement in tight spaces such as smartphone camera modules and wearable sensors |
| Low-Leakage Regulation | 1.0 μA max IR at 1.0 V - minimizes quiescent current in battery-powered voltage monitor circuits |
| Stable Low-Voltage Reference | 2.4 V Zener with −3.5 mV/°C tempco - provides predictable drift behavior for temperature-compensated bias networks |
Applications
| Smartphone Power Management | Automotive Infotainment I/O Protection |
|---|---|
Use Scenario: Clamping transient surges on USB data lines and SIM card interfaces in compact mobile handsets. IC Role / Device Role / Timing Role: Zener diode providing bidirectional overvoltage protection at signal-level nodes. Use Value: 2.4 V clamping threshold prevents damage to 2.5 V/3.3 V interface ICs while maintaining signal integrity via low 100 Ω ZZT. | Use Scenario: Protecting CAN transceiver inputs and display backlight control lines against load dump and ESD events. IC Role / Device Role / Timing Role: Standalone voltage clamp ensuring system-level EMC compliance per ISO 10605. Use Value: >16 kV HBM ESD rating and AEC-Q101 qualification enable single-component surge suppression without external TVS arrays. |
| Wearable Sensor Biasing | Industrial PLC Input Conditioning |
Use Scenario: Generating stable 2.4 V reference for analog front-end amplifiers in hearable devices. IC Role / Device Role / Timing Role: Precision Zener acting as shunt reference for low-power ADC bias networks. Use Value: ±8.3% VZ tolerance and −3.5 mV/°C tempco allow accurate offset calibration across −40 °C to +85 °C operating range. | Use Scenario: Level-shifting and overvoltage limiting for 24 V digital input channels in modular controllers. IC Role / Device Role / Timing Role: Front-end protection element absorbing induced transients before optocoupler input stages. Use Value: 500 mW power rating and 250 °C/W RJA support sustained clamping during repetitive 100 V/100 ns surge events per IEC 61000-4-4. |
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 | 2.4 V ±5%, 300 mW rating, SOD-523 package, no AEC-Q101 qualification | Limited to commercial-grade portable electronics; lacks automotive reliability validation | Select when cost sensitivity outweighs automotive qualification requirements |
| MMSZ5221BT1G | 2.4 V ±5%, 500 mW, SOD-123 package (2.7 mm × 1.6 mm), AEC-Q101 qualified | Requires larger PCB area; same thermal performance but less space-efficient than SOD-523 | Select when existing layout accommodates SOD-123 and higher tolerance is acceptable |
Compared with BZX584C2V4 and MMSZ5221BT1G, SZMM5Z2V4T1G uniquely combines AEC-Q101 qualification, SOD-523 miniaturization, and 2.4 V regulation in a single component-making it optimal for next-generation automotive sensors and ultra-compact wearables where board space and reliability are co-constrained.
Availability
SZMM5Z2V4T1G is available at Aetrix Electronics and suitable for smartphone power management, automotive infotainment I/O protection, and wearable sensor biasing requiring stable component supply and full traceability.
Supply support for SZMM5Z2V4T1G 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
SZMM5ZxxxT1G series is part of onsemi's automotive-qualified Zener diode portfolio, designed specifically for high-reliability voltage regulation and transient suppression in safety-critical and space-constrained electronic systems.
FAQ
What is the Zener voltage tolerance of SZMM5Z2V4T1G?
The SZMM5Z2V4T1G has a nominal Zener voltage of 2.4 V with a tolerance of ±8.3%, specified as 2.2 V minimum to 2.6 V maximum at IZT = 5 mA and TA = 25 °C. This tolerance reflects standard-grade regulation performance suitable for non-critical clamping and reference applications where tight voltage accuracy is not required.
Is SZMM5Z2V4T1G qualified for automotive applications?
Yes, SZMM5Z2V4T1G is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive applications including infotainment systems, body control modules, and ADAS sensor interfaces. The "SZ" prefix explicitly denotes automotive-grade manufacturing controls and site-specific change management per onsemi's qualification protocol.
What is the maximum power dissipation for SZMM5Z2V4T1G at 85 °C ambient?
At 85 °C ambient, SZMM5Z2V4T1G derates linearly from its 500 mW rating at 25 °C using the 4.0 mW/°C slope. This yields 500 mW − (60 °C × 4.0 mW/°C) = 260 mW maximum steady-state power dissipation on an FR-4 board with 1 cm² copper pad, per the published derating curve in the datasheet.
Does SZMM5Z2V4T1G have ESD protection capability?
Yes, SZMM5Z2V4T1G is rated for >16 kV electrostatic discharge per the Human Body Model (HBM), making it suitable for use in handheld and portable electronics where user-handling ESD events are common. This rating is verified per JESD22-A114 and documented in the official onsemi datasheet.
What is the thermal resistance junction-to-ambient for SZMM5Z2V4T1G?
The thermal resistance junction-to-ambient (RJA) for SZMM5Z2V4T1G is 250 °C/W, measured on a single-sided FR-4 board with a 1 cm² copper mounting pad. This value directly determines temperature rise under load and must be applied when calculating safe operating area in thermally constrained designs.
SZMM5Z2V4T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±8.3%
- Power - Max:
- 500 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
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z2V4T1G FAQ
1.How can I place an order for SZMM5Z2V4T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z2V4T1G 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 SZMM5Z2V4T1G reliable?
The price and inventory of SZMM5Z2V4T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z2V4T1G is usually 5 days.
3.What payment methods are accepted for SZMM5Z2V4T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z2V4T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z2V4T1G?
SZMM5Z2V4T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z2V4T1G 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 SZMM5Z2V4T1G?
For technical support, including SZMM5Z2V4T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z2V4T1G requirements.
6.How does Aetrix verify that SZMM5Z2V4T1G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z2V4T1G 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 SZMM5Z2V4T1G meets industry standards.
7.What is the process for return or replacement of SZMM5Z2V4T1G?
All SZMM5Z2V4T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z2V4T1G, 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 SZMM5Z2V4T1G part is unused and in its original packaging.
Return procedure for SZMM5Z2V4T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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