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onsemi SZMMSZ2V7T1G
- Part No.:
- SZMMSZ2V7T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ2V7T1G.pdf
- Description:
- DIODE ZENER 2.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,496
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Product details
Overview
SZMMSZ2V7T1G from onsemi is a 2.7 V ±5% Zener voltage regulator diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 100 Ω dynamic impedance at 5 mA test current and 20 µA reverse leakage at 1.9 V, used for precision low-voltage reference and overvoltage protection in automotive sensor interfaces.
For engineers reviewing the SZMMSZ2V7T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, and direct replacement guidance for production-grade Zener regulation in space-constrained PCBs.
Technical Context
This device operates as a two-terminal shunt regulator with fixed 2.7 V nominal breakdown voltage, specified under 5 mA Zener test current (IZT) and validated across −55 °C to +150 °C junction temperature range. Its 100 Ω Zener impedance (ZZT) and 20 µA reverse leakage at VR = 1.9 V define its regulation stability and standby power loss.
The SOD-123 package enables automated placement and supports 260 °C soldering for 10 seconds, while its Class 3 ESD rating (>16 kV HBM) and AEC-Q101 qualification confirm suitability for automotive electronics where transient immunity and reliability are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.7 V nominal, ±5% tolerance (2.57–2.84 V), measured at IZT = 5 mA - defines precise low-voltage reference point |
| Power Dissipation (PD) | 500 mW at TL = 75 °C on FR-5 board, derated 6.7 mW/°C above 75 °C - sets maximum continuous thermal load |
| Zener Impedance (ZZT) | 100 Ω max at IZT = 5 mA, f = 1 kHz - determines output voltage variation under load transients |
| Reverse Leakage (IR) | 20 µA max at VR = 1.9 V - limits quiescent current in standby mode |
| Thermal Resistance (RJA) | 340 °C/W - quantifies junction-to-ambient heat transfer efficiency on standard PCB |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - ensures robustness during handling and assembly |
| AEC-Q101 Qualified | Yes - confirms automotive-grade reliability for engine control, body electronics, and ADAS sensors |
Pinout & Package
SOD-123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish; cathode indicated by polarity band; lead-free (Pb-Free) construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-Voltage Precision Regulation | 2.7 V ±5% Zener voltage stable over −55 °C to +150 °C - enables accurate biasing of low-power analog circuits |
| Automated Assembly Optimized | SOD-123 footprint compatible with standard pick-and-place equipment and reflow profiles - reduces manufacturing cost and defect rate |
| High ESD Robustness | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in I/O line clamping applications |
| Automotive Qualification | AEC-Q101 qualified and PPAP capable - satisfies Tier-1 supplier requirements for vehicle subsystems |
| Small Form Factor | 1.60 × 2.69 mm outline - fits high-density layouts in compact modules like battery management ICs and sensor signal conditioners |
Applications
| Automotive Cabin Sensors | Industrial Current Loop Transmitters |
|---|---|
Use Scenario: Regulating reference voltage for MEMS pressure and humidity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 2.7 V bias to analog front-end amplifiers and ADCs. Use Value: Maintains <±1% output accuracy over temperature and lifetime, ensuring sensor calibration integrity without trimming. |
Use Scenario: Clamping and stabilizing loop supply voltage in 4–20 mA transmitter circuits operating from 24 V rails. IC Role / Device Role / Timing Role: Overvoltage protector and local reference source for op-amp bias networks. Use Value: Limits transient-induced errors during field wiring faults while consuming only 20 µA in standby. |
| Medical Wearable Power Monitoring | Consumer IoT Battery Protection |
Use Scenario: Providing reference voltage for fuel gauge ICs in portable ECG monitors powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-current Zener reference enabling accurate battery voltage measurement down to 2.8 V cutoff. Use Value: Enables 0.5% state-of-charge resolution across full discharge curve due to tight 5% VZ tolerance and low ZZT. |
Use Scenario: Protecting USB-C PD interface logic from input surge in smart home hubs with dual-input power paths. IC Role / Device Role / Timing Role: Fast-response clamp limiting VBUS rail to 2.7 V during hot-plug transients. Use Value: Survives 225 W peak surge (8 × 20 µs) without degradation, eliminating need for TVS diodes in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ2V7ET1G | Same electrical specs and SOD-123 package, but lacks AEC-Q101 qualification and SZ-prefix traceability controls | Approved for industrial/commercial use only; not accepted in automotive BOMs requiring PPAP documentation | Select when automotive compliance is unnecessary and cost sensitivity outweighs qualification requirements |
| BZX84-C2V7 | 2.7 V ±5%, 350 mW rating, SOT-23 package, 120 Ω ZZT at 5 mA - lower power and higher impedance than SZMMSZ2V7T1G | Used in consumer wearables and portable audio where thermal margin is less constrained | Choose when board space allows SOT-23 and peak power demand stays below 350 mW |
Compared with MMSZ2V7ET1G and BZX84-C2V7, SZMMSZ2V7T1G provides automotive-grade reliability, higher 500 mW power capability, and lower 100 Ω dynamic impedance - making it the preferred choice for mission-critical voltage references in harsh-environment systems.
Availability
SZMMSZ2V7T1G is available at Aetrix Electronics and suitable for automotive sensor modules, industrial 4–20 mA transmitters, and medical wearable power monitoring systems requiring stable component supply and long-term lifecycle support.
Supply support for SZMMSZ2V7T1G 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZMMSZxxxT1G series belongs to onsemi's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for automotive subsystems requiring high-reliability voltage reference and overvoltage protection in compact SOD-123 packages.
FAQ
What is the Zener voltage tolerance and test condition for SZMMSZ2V7T1G?
The SZMMSZ2V7T1G has a nominal Zener voltage of 2.7 V with a ±5% tolerance (2.57–2.84 V), measured at a Zener test current (IZT) of 5 mA and pulse width of 1 ms. This tolerance is guaranteed across the full operating temperature range of −55 °C to +150 °C, and applies to all units in the production lot.
Is SZMMSZ2V7T1G suitable for automotive applications?
Yes, SZMMSZ2V7T1G is AEC-Q101 qualified and PPAP capable, with full traceability via the "SZ" prefix indicating automotive-specific site and process controls. It meets stringent requirements for engine bay, cabin, and ADAS subsystems where reliability under thermal cycling and vibration is critical.
What is the maximum power dissipation and thermal derating behavior of SZMMSZ2V7T1G?
SZMMSZ2V7T1G delivers 500 mW power dissipation at lead temperature (TL) of 75 °C on FR-5 board, derating linearly at 6.7 mW/°C above that point. At 100 °C TL, usable power drops to 332.5 mW - a key constraint for high-temperature PCB layouts near power converters or processors.
How does the dynamic impedance of SZMMSZ2V7T1G affect regulation performance?
SZMMSZ2V7T1G exhibits a maximum dynamic impedance (ZZT) of 100 Ω at IZT = 5 mA and 1 kHz AC signal. This low value ensures minimal output voltage deviation (<0.5 mV per 5 µA load change), supporting stable biasing in precision analog stages such as instrumentation amplifiers and ADC reference buffers.
What packaging and marking format does SZMMSZ2V7T1G use?
SZMMSZ2V7T1G is supplied in Pb-free SOD-123 package (Case 425, Style 1), marked with "CL2" code followed by date code (e.g., "CL2M"). The cathode is identified by a band at Pin 1; the device is shipped in 3,000-unit tape-and-reel format compliant with EIA-481 standards.
SZMMSZ2V7T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ2V7T1G FAQ
1.How can I place an order for SZMMSZ2V7T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ2V7T1G 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 SZMMSZ2V7T1G reliable?
The price and inventory of SZMMSZ2V7T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ2V7T1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ2V7T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ2V7T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ2V7T1G?
SZMMSZ2V7T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ2V7T1G 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 SZMMSZ2V7T1G?
For technical support, including SZMMSZ2V7T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ2V7T1G requirements.
6.How does Aetrix verify that SZMMSZ2V7T1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ2V7T1G 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 SZMMSZ2V7T1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ2V7T1G?
All SZMMSZ2V7T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ2V7T1G, 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 SZMMSZ2V7T1G part is unused and in its original packaging.
Return procedure for SZMMSZ2V7T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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