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onsemi SZMM5Z2V4T5G
- Part No.:
- SZMM5Z2V4T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z2V4T5G.pdf
- Description:
- DIODE ZENER 2.4V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
SZMM5Z2V4T5G from onsemi is a 2.4 V ±8.3% (2.2–2.6 V) 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 reference and overvoltage clamping in space-constrained portable electronics.
For engineers reviewing the SZMM5Z2V4T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal derating behavior above 25 °C, ESD robustness (>16 kV HBM), AEC-Q101 qualification status, 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 voltage across its terminals under varying load or supply conditions. Its design centers on low-profile surface-mount reliability, with junction-to-ambient thermal resistance of 250 °C/W on FR-4 board and full MSL 1 reflow capability up to 260 °C.
The SZMM5Z2V4T5G belongs to the automotive-grade variant of the MM5Zxxx series, distinguished by the "SZ" prefix indicating AEC-Q101 qualification, PPAP capability, and controlled manufacturing site requirements - unlike standard MM5Z2V4T5G parts. It exhibits a negative temperature coefficient of −3.5 mV/°C at IZT, enabling predictable drift compensation in temperature-sensitive bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 2.4 V nominal, 2.2–2.6 V range at 5 mA - defines clamping threshold for low-voltage rail protection |
| Power Rating | 500 mW at 25 °C, derated 4.0 mW/°C above - sets maximum continuous dissipation on standard FR-4 PCB |
| Zener Impedance | 100 Ω max at 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Leakage Current | 1.0 μA max at 1.0 V reverse - ensures minimal standby current in battery-powered systems |
| ESD Rating | Class 3 HBM (>16 kV) - provides intrinsic ESD immunity without external protection components |
| Temp Coefficient | −3.5 mV/°C at IZT - enables predictable voltage drift modeling across −65 to +150 °C operating range |
| Capacitance | 450 pF max at 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
Pinout & Package
SOD-523 package: 1.20 mm × 0.80 mm × 0.60 mm body, 0.7 mm max height, matte tin lead finish, void-free thermoset epoxy case meeting UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; polarity band identifies cathode for correct PCB orientation |
| 2 | Anode | Connected to ground or lower-potential reference; forms reverse-biased junction during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and infotainment power rails |
| Pb-Free & RoHS Compliant | Meets global environmental compliance mandates without compromising solderability or thermal performance |
| MSL 1 Reflow Rating | Withstands peak reflow temperatures up to 260 °C without delamination or parametric shift |
| High-Density Footprint | 0.96 mm² board area enables placement in tight spaces such as smartphone camera modules and wearables |
| Stable Low-Voltage Reference | 2.4 V Zener point supports precise biasing of low-threshold MOSFETs and analog comparators |
Applications
| Battery Voltage Monitoring | USB-C Port Protection |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in portable medical devices to trigger low-battery alerts before cutoff. IC Role / Device Role / Timing Role: Provides stable 2.4 V reference for ADC input scaling and comparator hysteresis thresholds. Use Value: Enables accurate 3.0–4.2 V battery range detection with <±1% error margin across temperature, leveraging tight 2.2–2.6 V Zener tolerance. | Use Scenario: Clamping transient surges on USB-C CC lines during hot-plug events in docking stations. IC Role / Device Role / Timing Role: Acts as bidirectional overvoltage clamp between CC line and ground, limiting excursion to ±2.6 V. Use Value: Prevents damage to USB PD controller ICs by absorbing >16 kV HBM ESD strikes and fast-rising 100 ns transients. |
| Wearable Sensor Biasing | Automotive Cabin Controller Reference |
Use Scenario: Supplying stable bias voltage to MEMS accelerometer and heart-rate sensor front-ends in smartwatches. IC Role / Device Role / Timing Role: Delivers low-noise, low-drift DC reference for analog signal conditioning stages. Use Value: Maintains sensor offset stability within ±0.5 mV over −20 to +70 °C, enabled by −3.5 mV/°C tempco and 100 Ω ZZT. | Use Scenario: Providing reference voltage for LIN bus transceiver biasing in automotive seat control modules. IC Role / Device Role / Timing Role: Supplies regulated 2.4 V to internal voltage translator circuitry in AEC-Q101-compliant LIN ICs. Use Value: Ensures functional safety compliance by guaranteeing reference stability under 12 V battery transients and load-dump conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MM5Z2V4T5G | No AEC-Q101 qualification; same electrical specs and SOD-523 package | Not approved for automotive use; suitable for consumer portables and industrial controls | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive traceability needs |
| BZX584C2V4 | 2.4 V, 5% tolerance (tighter than SZMM5Z2V4T5G's 8.3%), 300 mW rating, SOD-323 package (larger footprint) | Higher precision but lower power handling; incompatible SOD-323 pad layout requires PCB redesign | Choose only if tighter voltage tolerance is critical and board space allows larger SOD-323 footprint |
Compared with MM5Z2V4T5G and BZX584C2V4, the SZMM5Z2V4T5G uniquely combines automotive qualification, 500 mW power capability, and ultra-compact SOD-523 packaging - making it the sole option for AEC-Q101-compliant, space-constrained 2.4 V regulation without layout change.
Availability
SZMM5Z2V4T5G is available at Aetrix Electronics and suitable for battery monitoring, USB-C protection, wearable sensor biasing, and automotive cabin controller reference requiring stable component supply across production lifecycles.
Supply support for SZMM5Z2V4T5G 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.
The MM5Zxxx/SZMM5Zxxx series was engineered specifically for miniaturized voltage regulation in portable and automotive electronics, prioritizing ultra-small form factor, high ESD resilience, and AEC-Q101 compliance where traditional through-hole or larger SMD Zeners cannot fit.
FAQ
What is the Zener voltage tolerance of SZMM5Z2V4T5G?
The SZMM5Z2V4T5G has a specified Zener voltage range of 2.2 V to 2.6 V at 5 mA test current, corresponding to a nominal 2.4 V with ±0.2 V (±8.3%) tolerance. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet (Rev. 19, April 2025), under the Standard Tolerance Series section for device marking "00".
Is SZMM5Z2V4T5G qualified for automotive applications?
Yes, SZMM5Z2V4T5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section. The "SZ" prefix denotes automotive-grade manufacturing controls, unique site requirements, and qualification for use in automotive subsystems such as body electronics and infotainment power rails.
What is the maximum power dissipation for SZMM5Z2V4T5G at 70 °C ambient?
At 70 °C ambient, SZMM5Z2V4T5G dissipates 320 mW maximum. This is calculated using the 500 mW rating at 25 °C and 4.0 mW/°C derating: 500 mW − (70 − 25) × 4.0 = 320 mW. This value is derived directly from the Maximum Ratings table (Note 1) and Figure 1 (Steady State Power Derating) in the official onsemi datasheet.
Does SZMM5Z2V4T5G have a defined polarity marking?
Yes, SZMM5Z2V4T5G uses Style 1 marking per the Mechanical Case Outline diagram: Pin 1 (cathode) is identified by a polarity band on the SOD-523 package body. The datasheet confirms this in the MARKING DIAGRAM section and states "PIN 1. CATHODE (POLARITY BAND)" - essential for correct orientation during automated placement.
What is the reverse leakage current specification for SZMM5Z2V4T5G?
The reverse leakage current for SZMM5Z2V4T5G is 1.0 μA maximum at VR = 1.0 V, as specified in the Electrical Characteristics table on page 3 of the datasheet. This parameter ensures minimal quiescent current draw in always-on battery-powered circuits, supporting multi-year operation in low-power IoT sensors.
SZMM5Z2V4T5G 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:
- ±8.33%
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z2V4T5G FAQ
1.How can I place an order for SZMM5Z2V4T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z2V4T5G 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 SZMM5Z2V4T5G reliable?
The price and inventory of SZMM5Z2V4T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z2V4T5G is usually 5 days.
3.What payment methods are accepted for SZMM5Z2V4T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z2V4T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z2V4T5G?
SZMM5Z2V4T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z2V4T5G 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 SZMM5Z2V4T5G?
For technical support, including SZMM5Z2V4T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z2V4T5G requirements.
6.How does Aetrix verify that SZMM5Z2V4T5G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z2V4T5G 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 SZMM5Z2V4T5G meets industry standards.
7.What is the process for return or replacement of SZMM5Z2V4T5G?
All SZMM5Z2V4T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z2V4T5G, 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 SZMM5Z2V4T5G part is unused and in its original packaging.
Return procedure for SZMM5Z2V4T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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