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onsemi MMSZ4702ET3G
- Part No.:
- MMSZ4702ET3G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ4702ET3G.pdf
- Description:
- DIODE ZENER 15V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,245
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Product details
Overview
MMSZ4702ET3G from onsemi is a 15 V ±5% Zener voltage regulator diode in SOD−123 package, rated for 500 mW power dissipation at 75°C on FR−5 board, with 0.05 µA reverse leakage at 11.4 V and 150°C/W junction-to-lead thermal resistance. It serves as a precision voltage reference or overvoltage clamp in low-power analog sensing and automotive body control modules.
For engineers reviewing the MMSZ4702ET3G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC−Q101 qualification, Class 3 ESD rating (>16 kV HBM), 225 W peak surge capability (8 × 20 µs), and tight 14.25–15.75 V Zener tolerance at 50 mA test current.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable voltage across load variations and temperature shifts from −55°C to +150°C. Its dynamic impedance is 30 Ω at 1 mA and 20 Ω at 20 mA, with a positive temperature coefficient of +5.5 mV/°C near 15 V nominal.
The device uses silicon planar epitaxial construction with void-free thermosetting plastic encapsulation (UL 94 V−0), cathode band polarity marking, and Pb−free SOD−123 package optimized for automated reflow assembly on high-density PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.25–15.75 V @ IZT = 50 mA - defines clamping threshold with ±5% tolerance for reliable overvoltage protection |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - sets maximum continuous DC power handling on standard FR−5 board |
| Reverse Leakage (IR) | 0.05 µA @ VR = 11.4 V - ensures minimal quiescent current draw in standby mode |
| Peak Surge Power (Ppk) | 225 W @ 8 × 20 µs pulse - supports transient suppression of ESD and inductive switching spikes |
| Thermal Resistance (RJL) | 150 °C/W - enables efficient heat transfer from junction to PCB pad under sustained load |
| ESD Rating | Class 3 (>16 kV HBM) - meets stringent electrostatic discharge immunity for automotive interior electronics |
| AEC−Q101 Qualified | Yes - validated for automotive applications including body control units and sensor interfaces |
Pinout & Package
SOD−123 surface-mount package: 2-terminal, cathode-band marked, void-free thermosetting plastic case, UL 94 V−0 flammability rating, 260°C max soldering temperature for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher potential node; reverse-biased operation establishes regulated voltage drop |
| 2 (Anode) | Reference ground terminal | Typically tied to system ground or low-side return path; completes Zener conduction loop |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW FR−5 board rating | Enables use in space-constrained consumer and automotive PCBs without forced cooling |
| Class 3 ESD immunity (>16 kV HBM) | Eliminates need for external ESD protection in touch-sensitive or exposed interface circuits |
| AEC−Q101 qualification | Validates reliability for automotive body electronics operating across −40°C to +125°C ambient |
| Pb−free SOD−123 package | Complies with RoHS and ELV directives while maintaining compatibility with standard reflow profiles |
| Small footprint (2.54 × 1.35 mm) | Supports >2× higher component density vs. DO−35 or SOD−323 in voltage reference networks |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage regulation for microcontroller I/O supply rail in door module ECUs exposed to load dump transients. IC Role / Device Role / Timing Role: Zener clamp protecting 3.3 V LDO input from 24 V battery spikes up to 40 V. Use Value: 225 W surge rating absorbs 8 × 20 µs load dump energy without degradation; AEC−Q101 ensures 15-year field reliability. |
Use Scenario: Precision reference for 12-bit ADC measuring thermistor-based temperature in HVAC controllers. IC Role / Device Role / Timing Role: Stable 15 V reference source for ratiometric sensor excitation and ADC full-scale calibration. Use Value: ±5% VZ tolerance and +5.5 mV/°C TC enable <±1.2°C measurement accuracy over −25°C to +85°C. |
| USB-C Power Delivery Interface | Smart Home Motion Detector |
Use Scenario: Overvoltage protection on CC line during USB PD negotiation with variable 5–20 V bus voltages. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting CC pin voltage to safe levels during fault conditions. Use Value: 0.05 µA leakage at 11.4 V prevents false detection during low-power sleep states; Class 3 ESD blocks contact discharge events. |
Use Scenario: Bias voltage generation for PIR sensor amplifier stage in battery-powered occupancy sensors. IC Role / Device Role / Timing Role: Low-quiescent-current voltage reference enabling >2-year coin-cell battery life. Use Value: 500 mW rating allows operation at 15 V/10 mA without derating; SOD−123 footprint minimizes PCB area in compact enclosures. |
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-C15LT1G | Same 15 V nominal, but ±6% tolerance (14.1–15.9 V); 350 mW rating; SOT−23 package | Higher leakage (1 µA @ 12 V); no AEC−Q101 qualification; lower surge rating (100 W) | Acceptable for non-automotive consumer designs where cost and SOT−23 pick-and-place compatibility are prioritized |
| MMSZ5245B-TP | 15 V nominal, ±5% tolerance, but 350 mW rating; SOD−123 package; no AEC−Q101 or Class 3 ESD | Higher dynamic impedance (35 Ω @ 20 mA); 10× higher leakage (0.5 µA @ 11.4 V) | Valid alternative for industrial prototypes requiring same footprint but not automotive qualification or ESD robustness |
Compared with BZX84-C15LT1G and MMSZ5245B-TP, the MMSZ4702ET3G delivers superior automotive-grade reliability, tighter leakage control, and higher surge resilience-making it the preferred choice when AEC−Q101 compliance, long-term stability, and transient immunity are mandatory.
Availability
MMSZ4702ET3G is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power delivery interfaces, and smart home motion detectors requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for MMSZ4702ET3G 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MMSZ4xxxET1G Series was designed specifically for high-volume, space-constrained applications demanding AEC−Q101 qualified Zener regulation with robust surge and ESD performance in miniature SOD−123 packaging.
FAQ
What is the Zener voltage tolerance of MMSZ4702ET3G?
The MMSZ4702ET3G has a Zener voltage range of 14.25 V to 15.75 V at 50 mA test current, corresponding to a ±5% tolerance around the nominal 15 V rating. This tolerance is guaranteed across the full operating temperature range of −55°C to +150°C and is verified per onsemi's production test flow for each MMSZ4702ET3G unit shipped.
Is MMSZ4702ET3G suitable for automotive applications?
Yes, the MMSZ4702ET3G is AEC−Q101 qualified and PPAP capable, making it suitable for automotive applications including body control modules, lighting drivers, and sensor interfaces. Its construction, testing, and traceability meet automotive quality requirements, and the SOD−123 package supports reflow profiles used in automotive PCB assembly.
What is the maximum reverse leakage current for MMSZ4702ET3G?
The MMSZ4702ET3G exhibits a maximum reverse leakage current of 0.05 µA at 11.4 V reverse voltage and 25°C ambient temperature. At elevated temperatures (e.g., 125°C), leakage remains below 1 µA, supporting low-power design goals in battery-operated systems where standby current must be minimized.
Does MMSZ4702ET3G have Pb−free packaging?
Yes, the MMSZ4702ET3G is supplied in a Pb−free SOD−123 package compliant with RoHS Directive 2011/65/EU and ELV requirements. The device marking includes the "M" date code and absence of lead-based solder, and it is compatible with standard SnAgCu reflow profiles up to 260°C for 10 seconds.
How does the thermal performance of MMSZ4702ET3G compare to similar Zeners?
The MMSZ4702ET3G offers a junction-to-lead thermal resistance (RJL) of 150°C/W-lower than many competing SOD−123 Zeners (typically 180–220°C/W). This improves power handling at elevated board temperatures and reduces thermal drift in voltage regulation, especially in tightly packed layouts where heat dissipation is constrained.
MMSZ4702ET3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.4 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
MMSZ4702ET3G FAQ
1.How can I place an order for MMSZ4702ET3G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ4702ET3G 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 MMSZ4702ET3G reliable?
The price and inventory of MMSZ4702ET3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ4702ET3G is usually 5 days.
3.What payment methods are accepted for MMSZ4702ET3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ4702ET3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ4702ET3G?
MMSZ4702ET3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ4702ET3G 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 MMSZ4702ET3G?
For technical support, including MMSZ4702ET3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ4702ET3G requirements.
6.How does Aetrix verify that MMSZ4702ET3G is sourced from the original manufacturer or authorized distributors?
All MMSZ4702ET3G 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 MMSZ4702ET3G meets industry standards.
7.What is the process for return or replacement of MMSZ4702ET3G?
All MMSZ4702ET3G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ4702ET3G, 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 MMSZ4702ET3G part is unused and in its original packaging.
Return procedure for MMSZ4702ET3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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