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onsemi MMSZ2V7T1
- Part No.:
- MMSZ2V7T1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ2V7T1.pdf
- Description:
- DIODE ZENER 2.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,431
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Product details
Overview
MMSZ2V7T1 from onsemi is a 2.7 V, ±5% tolerance Zener diode in SOD−123 package, rated for 500 mW power dissipation at 75°C ambient, with 100 Ω dynamic impedance at 5 mA test current and 20 µA reverse leakage at 1 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog sensor interfaces and microcontroller reset circuits.
For engineers reviewing the MMSZ2V7T1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, cathode/anode terminal roles, AEC−Q101 qualification status, and direct alternatives for voltage regulation in space-constrained PCBs.
Technical Context
This device operates as a two-terminal silicon Zener diode optimized for stable reverse-biased breakdown at nominal 2.7 V. Its 100 Ω Zener impedance at IZT = 5 mA and −55°C to +150°C junction temperature range support reliable voltage clamping in automotive and industrial environments.
The SOD−123 package enables automated placement while maintaining 340°C/W junction-to-ambient thermal resistance and 16 kV HBM ESD rating. Its 2.57–2.84 V Zener voltage window (±5%) and 20 µA IR at VR = 1 V define tight regulation performance under low-current bias conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.57–2.84 V at IZT = 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C - sets maximum continuous power handling before thermal derating |
| Zener Impedance (ZZT) | 100 Ω max at IZT = 5 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | 20 µA max at VR = 1 V - ensures minimal quiescent current draw in standby mode |
| Thermal Resistance (RJA) | 340°C/W - quantifies junction temperature rise per watt dissipated in still air |
| ESD Rating | Class 3 (>16 kV) per HBM - supports robustness against handling-induced electrostatic discharge |
| Junction Temp Range | −55°C to +150°C - enables operation in under-hood automotive or industrial control enclosures |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown anode connection | Connected to regulated voltage node; reverse-biased during clamping |
| 2 (Anode) | Zener breakdown cathode connection | Tied to ground or lower-potential reference; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables use in higher-current bias networks without external heat sinking on standard FR−5 PCB |
| AEC−Q101 Qualified | Validated for automotive electronics applications including body control modules and sensor signal conditioning |
| Small SOD−123 Footprint | Reduces board area by >50% vs. legacy DO−35 through-hole Zeners for high-density layout |
| 16 kV HBM ESD Protection | Eliminates need for discrete ESD protection in low-voltage I/O interface designs |
| ±5% Zener Tolerance | Supports accurate 2.7 V reference generation without post-production trimming in cost-sensitive systems |
Applications
| Microcontroller Reset Circuit | Low-Voltage Sensor Biasing |
|---|---|
Use Scenario: Providing clean, stable 2.7 V reference to enable reset ICs during brown-out conditions on 3.3 V systems. IC Role / Device Role / Timing Role: Zener voltage clamp ensuring reset assertion remains active until supply exceeds safe operating threshold. Use Value: Prevents spurious MCU resets caused by transient dips below 2.7 V due to its tight 2.57–2.84 V regulation window and low 20 µA leakage. | Use Scenario: Biasing photodiode or RTD front-end amplifiers requiring stable sub-3 V reference in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision shunt reference establishing fixed bias point for analog signal chain input stages. Use Value: Delivers <100 Ω dynamic impedance at 5 mA, minimizing reference drift under varying load currents in sensor excitation circuits. |
| Automotive CAN Transceiver Clamping | USB Port Overvoltage Protection |
Use Scenario: Protecting CANH/CANL bus lines from ESD and load-dump transients in vehicle infotainment ECUs. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting voltage spikes to ≤2.84 V during 15 kV HBM events. Use Value: Leverages AEC−Q101 qualification and 16 kV HBM rating to meet ISO 10605 requirements without additional TVS components. | Use Scenario: Safeguarding 3.3 V USB data line receivers against accidental 5 V misconnection or hot-plug surges. IC Role / Device Role / Timing Role: Low-capacitance (<5 pF typical) Zener clamp absorbing transient energy before it reaches downstream PHY. Use Value: Maintains signal integrity with minimal capacitive loading while clamping overshoot to 2.84 V peak, preserving USB 2.0 timing margins. |
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-B2V7 | Same 2.7 V nominal Zener, but 300 mW rating and SOD−323 package (1.3 × 1.7 mm) | Lower power handling limits use in higher-current bias networks; smaller footprint may complicate rework | Select when board space is critical and dissipation stays below 300 mW |
| MMBZ5223BS | 2.7 V Zener in SOT−23 package; 350 mW rating and 120 Ω ZZT at 20 mA | Higher Zener impedance reduces regulation accuracy under dynamic loads; 3-pin package requires routing adjustment | Choose only if existing SOT−23 footprint reuse is mandatory and 120 Ω impedance is acceptable |
Compared with BZX384-B2V7 and MMBZ5223BS, the MMSZ2V7T1 offers superior 500 mW power capability and lower 100 Ω Zener impedance in a widely adopted SOD−123 footprint-making it optimal for automotive-grade 2.7 V clamping where thermal margin and regulation stability are prioritized.
Availability
MMSZ2V7T1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMSZ2V7T1 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.
The MMSZxxxT1G series was engineered specifically for high-reliability, surface-mount Zener regulation in space-constrained automotive and industrial control systems-emphasizing AEC−Q101 compliance, tight voltage tolerance, and robust thermal performance.
FAQ
What is the Zener voltage tolerance of the MMSZ2V7T1?
The MMSZ2V7T1 has a nominal Zener voltage of 2.7 V with a standard tolerance of ±5%, resulting in a guaranteed range of 2.57 V to 2.84 V at IZT = 5 mA and TA = 25°C. This tolerance is measured using a 1 ms pulse width and applies across the full −55°C to +150°C junction temperature range.
Does the MMSZ2V7T1 meet automotive qualification standards?
Yes, the MMSZ2V7T1 is AEC−Q101 qualified and PPAP capable. It undergoes stress testing for high-temperature operating life, temperature cycling, and ESD (≥16 kV HBM), making it suitable for automotive applications such as body control modules, lighting drivers, and sensor signal conditioning circuits.
What is the maximum power dissipation for the MMSZ2V7T1 on a standard PCB?
The MMSZ2V7T1 is rated for 500 mW total power dissipation on FR−5 board at lead temperature (TL) = 75°C. Above 75°C, it derates linearly at 6.7 mW/°C. At 100°C lead temperature, usable power drops to approximately 333 mW.
How does the MMSZ2V7T1 compare to the MMSZ2V4T1G in terms of Zener impedance?
The MMSZ2V7T1 specifies a maximum Zener impedance (ZZT) of 100 Ω at IZT = 5 mA, while the MMSZ2V4T1G specifies 100 Ω at IZT = 5 mA as well. Both share identical impedance performance despite differing nominal voltages, supporting consistent regulation stability across the low-voltage Zener family.
Is the MMSZ2V7T1 available in Pb−free packaging?
Yes, the MMSZ2V7T1 is supplied in Pb−free SOD−123 packaging, marked with a "G" suffix in the part number (MMSZ2V7T1G). The device complies with JEDEC J-STD-020 moisture sensitivity level 1 and supports reflow soldering up to 260°C for 10 seconds.
MMSZ2V7T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ2V7T1 FAQ
1.How can I place an order for MMSZ2V7T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ2V7T1 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 MMSZ2V7T1 reliable?
The price and inventory of MMSZ2V7T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ2V7T1 is usually 5 days.
3.What payment methods are accepted for MMSZ2V7T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ2V7T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ2V7T1?
MMSZ2V7T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ2V7T1 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 MMSZ2V7T1?
For technical support, including MMSZ2V7T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ2V7T1 requirements.
6.How does Aetrix verify that MMSZ2V7T1 is sourced from the original manufacturer or authorized distributors?
All MMSZ2V7T1 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 MMSZ2V7T1 meets industry standards.
7.What is the process for return or replacement of MMSZ2V7T1?
All MMSZ2V7T1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ2V7T1, 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 MMSZ2V7T1 part is unused and in its original packaging.
Return procedure for MMSZ2V7T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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