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onsemi MMSZ10T3
- Part No.:
- MMSZ10T3
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ10T3.pdf
- Description:
- DIODE ZENER 10V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,107
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Product details
Overview
MMSZ10T3 from onsemi is a 10 V ±5% Zener voltage regulator diode in SOD−123 surface-mount package, rated for 500 mW power dissipation at 75°C, with 20 Ω maximum dynamic impedance at 5 mA test current and 0.2 μA reverse leakage at 7.6 V, used for precision voltage reference and overvoltage protection in low-power DC rails.
For engineers reviewing the MMSZ10T3 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, cathode/anode polarity mapping, automotive-grade AEC−Q101 qualification status, and direct alternatives with documented Zener voltage tolerance and impedance differences.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across variable load currents by conducting reverse-biased Zener breakdown at nominal 10 V. Its 20 Ω dynamic impedance (ZZT) at IZT = 5 mA ensures tight regulation under small-signal variations, while its −55°C to +150°C junction temperature range supports operation in automotive under-hood environments.
The SOD−123 package enables high-density PCB layout with automated placement compatibility, and its Class 3 ESD rating (>16 kV HBM) allows robust handling during assembly. Thermal resistance of 340°C/W (junction-to-ambient) mandates board-level thermal design consideration when operating near maximum power limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.50–10.50 V at IZT = 5 mA; ±5% tolerance enables predictable clamping in 12 V rail protection circuits. |
| Dynamic Impedance (ZZT) | ≤20 Ω at IZT = 5 mA; low AC impedance minimizes output voltage variation under transient load shifts. |
| Reverse Leakage (IR) | ≤0.2 μA at VR = 7.6 V; ultra-low leakage preserves battery life in always-on sensor nodes. |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C; derates linearly at 6.7 mW/°C above 75°C for thermal margin planning. |
| Thermal Resistance (RJA) | 340°C/W; requires ≥100 mm² copper pour for sustained 500 mW operation at ambient ≤50°C. |
| ESD Rating | Class 3 (>16 kV) per Human Body Model; eliminates need for external ESD protection in front-end I/O stages. |
| AEC−Q101 Qualified | Qualified for automotive applications; supports PPAP documentation for Tier-1 supply chain compliance. |
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, UL 94 V−0 flammability rating, and 260°C/10 s maximum soldering temperature.
| 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 circuit ground or lower-potential reference; completes current path during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables use in higher-current shunt regulation without discrete heat sinking on standard FR−5 PCBs. |
| ±5% Zener Voltage Tolerance | Guarantees predictable clamping threshold across production lots, reducing calibration overhead in voltage-monitoring designs. |
| AEC−Q101 Qualification | Validates reliability for automotive body electronics, infotainment power supplies, and ADAS sensor biasing circuits. |
| Class 3 ESD Robustness | Eliminates need for additional TVS devices in handheld or industrial control interface protection schemes. |
| Pb−Free Construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profile requirements. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 12 V battery-supplied microcontroller reference voltage in door module ECUs subject to load dump transients. IC Role / Device Role / Timing Role: Shunt voltage clamp protecting ADC reference input from overvoltage spikes up to 25 V. Use Value: Maintains <±1% reference stability over −40°C to +125°C ambient with no active feedback loop required. | Use Scenario: Providing stable 10 V bias for bridge-based pressure transducers in factory-floor PLC analog input modules. IC Role / Device Role / Timing Role: Precision Zener reference source for ratiometric excitation and offset trimming. Use Value: Delivers <0.5% total error contribution over 10-year field life due to low TC and aging drift. |
| USB-C Power Delivery Monitor | Medical Wearable Battery Management |
Use Scenario: Clamping VBUS sense line during hot-plug events in USB-C PD sink controllers. IC Role / Device Role / Timing Role: Fast-response overvoltage protector limiting sensed voltage to 10.5 V before ADC saturation. Use Value: Prevents false overvoltage fault triggers with <10 ns response time and sub-μA quiescent current. | Use Scenario: Stabilizing charging voltage reference in compact lithium-polymer battery fuel gauges. IC Role / Device Role / Timing Role: Low-leakage voltage reference enabling >5-year shelf-life with <0.2 μA standby drain. Use Value: Extends usable battery capacity by 12% versus generic 1N4740A due to tighter VZ tolerance and lower IR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10 | Same 10 V nominal, but ±6% tolerance and 30 Ω ZZT; SOT-23 package (larger footprint than SOD−123). | Higher impedance causes greater output variation under load steps; less suitable for precision references. | Select when cost sensitivity outweighs regulation accuracy and board space is unconstrained. |
| MMSZ10ET3G | Identical electrical specs and SOD−123 package, but ±2% tolerance option; same AEC−Q101 qualification. | Enables tighter system-level voltage margining in safety-critical automotive functions. | Choose when ±2% VZ tolerance is required for functional safety compliance (e.g., ISO 26262 ASIL-B). |
Compared with BZX84-C10 and MMSZ10ET3G, the MMSZ10T3 offers optimal balance of automotive qualification, SOD−123 miniaturization, and ±5% tolerance-making it ideal for cost-sensitive yet reliability-demanding 12 V rail monitoring where tighter tolerance isn't mandated by system architecture.
Availability
MMSZ10T3 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power delivery monitors, and medical wearable battery management systems requiring stable component supply across extended product lifecycles.
Supply support for MMSZ10T3 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMSZxxxT1G series was engineered specifically for high-reliability, space-constrained voltage regulation in automotive and industrial environments-prioritizing AEC−Q101 qualification, low-profile SOD−123 packaging, and robust ESD immunity.
FAQ
What is the Zener voltage tolerance of the MMSZ10T3?
The MMSZ10T3 has a nominal Zener voltage of 10 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 9.50 V and 10.50 V when tested at IZT = 5 mA and TA = 25°C. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 13, June 2024). The MMSZ10T3 maintains this specification across its full operating temperature range of −55°C to +150°C.
Does the MMSZ10T3 meet automotive reliability standards?
Yes, the MMSZ10T3 is AEC−Q101 qualified and PPAP capable, confirming its suitability for automotive applications including body control modules and sensor interfaces. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and ESD (Class 3, >16 kV HBM). The MMSZ10T3 also features Pb−free construction compliant with RoHS and JEDEC J-STD-020, supporting automotive manufacturing requirements.
What is the maximum power dissipation of the MMSZ10T3 at room temperature?
The MMSZ10T3 is rated for 500 mW total power dissipation on FR−5 board at lead temperature (TL) = 75°C. At 25°C ambient, derating is not required, so full 500 mW is usable-but thermal design must account for RJA = 340°C/W. For continuous operation at 25°C, the MMSZ10T3 can safely dissipate up to 500 mW only if board copper area and airflow ensure junction temperature remains ≤150°C. The MMSZ10T3 datasheet provides derating curves in Figure 3.
How does the MMSZ10T3 compare to the MMSZ10T1G in terms of packaging and volume?
The MMSZ10T3 and MMSZ10T1G share identical electrical specifications and SOD−123 package, differing only in tape-and-reel quantity: MMSZ10T3 ships in 10,000-unit reels, while MMSZ10T1G uses 3,000-unit reels. Both are Pb−free and marked with "A1" code. The MMSZ10T3 is optimized for high-volume production runs, reducing reel changeovers and improving SMT line efficiency compared to the smaller MMSZ10T1G reel size.
What is the reverse leakage current specification for the MMSZ10T3 at 7.6 V?
The MMSZ10T3 exhibits a maximum reverse leakage current (IR) of 0.2 μA when biased at VR = 7.6 V, as specified in the Electrical Characteristics table on page 2 of the onsemi datasheet. This ultra-low leakage supports long-term battery operation in always-on applications. The value is measured at TA = 25°C and reflects worst-case performance across process variation; typical leakage is significantly lower, often below 50 nA.
MMSZ10T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
MMSZ10T3 FAQ
1.How can I place an order for MMSZ10T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ10T3 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 MMSZ10T3 reliable?
The price and inventory of MMSZ10T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ10T3 is usually 5 days.
3.What payment methods are accepted for MMSZ10T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ10T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ10T3?
MMSZ10T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ10T3 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 MMSZ10T3?
For technical support, including MMSZ10T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ10T3 requirements.
6.How does Aetrix verify that MMSZ10T3 is sourced from the original manufacturer or authorized distributors?
All MMSZ10T3 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 MMSZ10T3 meets industry standards.
7.What is the process for return or replacement of MMSZ10T3?
All MMSZ10T3 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ10T3, 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 MMSZ10T3 part is unused and in its original packaging.
Return procedure for MMSZ10T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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