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onsemi MMSZ8V2ET1G
- Part No.:
- MMSZ8V2ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ8V2ET1G.pdf
- Description:
- DIODE ZENER 8.2V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,440
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Product details
Overview
MMSZ8V2ET1G from onsemi is a 500 mW surface-mount Zener diode in SOD-123 package, rated for 8.2 V nominal reverse breakdown voltage (±5% tolerance), 15 Ω dynamic impedance at 5 mA test current, and 0.7 µA maximum reverse leakage at 6.3 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the MMSZ8V2ET1G datasheet, pinout, applications, or equivalent options, this device is selected for stable 8.2 V regulation in space-constrained PCBs requiring AEC-Q101 qualification, high ESD immunity (>16 kV HBM), and thermal reliability up to +150 °C junction temperature.
Technical Context
The MMSZ8V2ET1G operates as a two-terminal silicon Zener diode with controlled avalanche breakdown at 8.2 V. Its 15 Ω Zener impedance at IZT = 5 mA ensures minimal voltage deviation under load variation, while its −55 °C to +150 °C operating range supports automotive and industrial environments.
Thermal design relies on RJA = 340 °C/W (FR-5 board) and RJL = 150 °C/W, enabling 500 mW continuous dissipation at TL = 75 °C with linear derating above that point. Peak surge capability reaches 225 W for 8 × 20 µs pulses, suitable for transient suppression in DC bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.79–8.61 V at IZT = 5 mA; provides ±5% tolerance band for reliable 8.2 V reference in feedback loops. |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 5 mA; ensures <15 mV output shift per 1 mA load change in regulation applications. |
| Reverse Leakage (IR) | 0.7 µA max at VR = 6.3 V; enables low-error biasing in high-impedance sensor interfaces. |
| Power Dissipation (PD) | 500 mW on FR-5 board at TL = 75 °C; supports continuous operation in compact power management ICs. |
| ESD Rating | Class 3 (>16 kV HBM); eliminates need for external ESD protection in exposed I/O or sensor front-ends. |
| Operating Temperature | −55 °C to +150 °C junction range; qualified for under-hood automotive modules and industrial PLC inputs. |
| AEC-Q101 Qualified | Validated for automotive electronics per stress test requirements; supports PPAP documentation for Tier 1 suppliers. |
Pinout & Package
Package: SOD-123 (Case 425), 1.60 × 2.69 × 1.16 mm, Pb-free, void-free thermosetting plastic case with cathode polarity band. Maximum soldering temperature is 260 °C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to higher-potential node in reverse-bias configuration; carries regulated output voltage when used as shunt regulator. |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential reference; completes current path during Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables use in mid-current bias networks (up to ~60 mA at 8.2 V) without heatsinking on standard FR-5 PCBs. |
| 15 Ω Dynamic Impedance | Delivers tight voltage regulation (<±0.15 V) across 1–10 mA load variations in precision analog references. |
| 0.7 µA Max Reverse Leakage | Minimizes error in high-gain op-amp feedback paths and battery-monitoring dividers where leakage dominates offset. |
| AEC-Q101 Qualification | Confirms reliability for automotive body control modules, infotainment power supplies, and ADAS sensor bias rails. |
| ESD Class 3 Protection | Eliminates need for discrete TVS diodes in consumer IoT sensor nodes and portable medical device inputs. |
Applications
| Automotive Sensor Biasing | Industrial Analog Signal Conditioning |
|---|---|
|
Use Scenario: Providing stable 8.2 V reference for MEMS pressure sensor excitation in engine control units. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining constant bias voltage despite battery fluctuations (9–16 V). Use Value: Ensures sensor output linearity remains within ±0.5% across temperature due to low ZZT and AEC-Q101 thermal stability. |
Use Scenario: Clamping ADC input protection in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Overvoltage limiter diverting transients >8.6 V to ground before reaching sensitive 12-bit SAR converter. Use Value: Prevents ADC saturation and latch-up during 225 W surge events while adding <0.1 mm² footprint. |
| Portable Medical Device Reference | Consumer IoT Power Rail Stabilization |
|
Use Scenario: Generating precise 8.2 V supply for op-amp-based ECG front-end amplifiers in wearable monitors. IC Role / Device Role / Timing Role: Low-noise voltage reference source with sub-µA leakage preserving battery life in sleep mode. Use Value: Achieves <1 µV RMS noise contribution and 0.7 µA leakage enables >5-year coin-cell operation in intermittent-sampling designs. |
Use Scenario: Regulating 8.2 V rail for Wi-Fi SoC RF section in smart home hubs operating from 12 V wall adapters. IC Role / Device Role / Timing Role: Local shunt regulator absorbing ripple and load-step-induced overshoot on shared power bus. Use Value: Maintains RF PA stability by limiting voltage excursions to ±20 mV during 100 mA load transients, using only 15 Ω ZZT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2 | Same 8.2 V nominal Zener voltage but SOT-23 package; 30 Ω ZZT at 5 mA; no AEC-Q101 qualification. | Limited to commercial-grade portable electronics; unsuitable for automotive under-hood use due to temperature and qualification gaps. | Select BZX84-C8V2 only for cost-sensitive consumer products where AEC-Q101 and low ZZT are not required. |
| SZMMSZ8V2ET1G | Identical electrical specs and SOD-123 package; differs only in SZ prefix indicating automotive-specific traceability and PPAP support. | Required for Tier 1 automotive BOMs mandating full process control documentation and lot-level traceability. | Choose SZMMSZ8V2ET1G when automotive PPAP compliance and extended manufacturing controls are contractually mandated. |
Compared with BZX84-C8V2 and SZMMSZ8V2ET1G, the MMSZ8V2ET1G offers optimal balance of low 15 Ω ZZT, AEC-Q101 qualification, and commercial availability-making it preferred for industrial and Tier 2 automotive designs where full PPAP isn't required but reliability is critical.
Availability
MMSZ8V2ET1G is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog signal conditioning, and portable medical device reference applications requiring stable component supply, AEC-Q101 validation, and SOD-123 footprint compatibility.
Supply support for MMSZ8V2ET1G 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 MMSZxxxET1G series targets cost-effective, high-reliability Zener regulation in space-constrained surface-mount designs-specifically engineered for automotive subsystems, industrial sensors, and portable electronics needing robust voltage reference or clamping.
FAQ
What is the Zener voltage tolerance for MMSZ8V2ET1G?
The MMSZ8V2ET1G has a nominal Zener voltage of 8.2 V with a standard tolerance of ±5%, resulting in a guaranteed range of 7.79 V to 8.61 V at IZT = 5 mA and TA = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the onsemi datasheet Rev. 8.
Is MMSZ8V2ET1G suitable for automotive applications?
Yes, MMSZ8V2ET1G is AEC-Q101 qualified and PPAP capable, making it suitable for automotive applications including engine control unit sensor biasing, infotainment power supplies, and ADAS subsystems. Its −55 °C to +150 °C operating range and 16 kV HBM ESD rating meet automotive environmental requirements.
What is the maximum reverse leakage current for MMSZ8V2ET1G?
The maximum reverse leakage current for MMSZ8V2ET1G is 0.7 µA at VR = 6.3 V and TA = 25 °C, as specified in the Electrical Characteristics table. This low leakage supports high-impedance analog circuits such as precision voltage dividers and op-amp feedback networks.
What package type does MMSZ8V2ET1G use?
MMSZ8V2ET1G uses the SOD-123 surface-mount package (Case 425), measuring 1.60 × 2.69 × 1.16 mm. The cathode is marked with a band on terminal 1, and the device is Pb-free with a corrosion-resistant, easily solderable finish rated for 260 °C for 10 seconds.
How does MMSZ8V2ET1G compare to MMSZ8V2ET3G?
MMSZ8V2ET1G and MMSZ8V2ET3G share identical electrical and thermal specifications; the only difference is packaging quantity-MMSZ8V2ET1G ships in 3,000-piece tape-and-reel reels, while MMSZ8V2ET3G ships in 10,000-piece reels. Both are Pb-free and use the same SOD-123 package.
MMSZ8V2ET1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
MMSZ8V2ET1G FAQ
1.How can I place an order for MMSZ8V2ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ8V2ET1G 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 MMSZ8V2ET1G reliable?
The price and inventory of MMSZ8V2ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ8V2ET1G is usually 5 days.
3.What payment methods are accepted for MMSZ8V2ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ8V2ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ8V2ET1G?
MMSZ8V2ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ8V2ET1G 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 MMSZ8V2ET1G?
For technical support, including MMSZ8V2ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ8V2ET1G requirements.
6.How does Aetrix verify that MMSZ8V2ET1G is sourced from the original manufacturer or authorized distributors?
All MMSZ8V2ET1G 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 MMSZ8V2ET1G meets industry standards.
7.What is the process for return or replacement of MMSZ8V2ET1G?
All MMSZ8V2ET1G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ8V2ET1G, 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 MMSZ8V2ET1G part is unused and in its original packaging.
Return procedure for MMSZ8V2ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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