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onsemi MMSZ16ET1
- Part No.:
- MMSZ16ET1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ16ET1.pdf
- Description:
- DIODE ZENER 16V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,053
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Product details
Overview
MMSZ16ET1G from onsemi is a 16 V, ±5% tolerance Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 40 Ω dynamic impedance at 5 mA test current and 0.05 µA reverse leakage at 11.2 V, used for precision voltage regulation and overvoltage protection in low-power analog and digital supply rails.
For engineers reviewing the MMSZ16ET1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal derating behavior, junction-to-lead thermal resistance (150 °C/W), ESD robustness (Class 3, >16 kV HBM), and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across load and line variations by conducting reverse current above its specified Zener breakdown threshold. It exhibits a nominal temperature coefficient near zero (±2 mV/°C typical for 16 V devices) and supports transient surge handling up to 225 W (8 × 20 µs pulse).
Designed for surface-mount assembly on FR-4/FR-5 PCBs, it features Pb-free construction, UL 94 V-0 flammability rating, and cathode polarity marked by a band. Its SOD-123 case (1.60 × 2.69 × 1.16 mm) enables high-density placement while meeting automotive PPAP requirements when ordered with SZ prefix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.2–16.8 V at IZT = 5 mA; ensures stable 16 V reference within ±5% tolerance under nominal bias |
| Power Dissipation (PD) | 500 mW at TL = 75 °C; derates linearly to 0 W at 150 °C ambient via 6.7 mW/°C slope |
| Zener Impedance (ZZT) | 40 Ω max at IZT = 5 mA; limits output voltage variation under dynamic load changes |
| Reverse Leakage (IR) | 0.05 µA max at VR = 11.2 V; minimizes standby current in battery-powered circuits |
| Thermal Resistance (RJL) | 150 °C/W junction-to-lead; enables direct thermal path to PCB copper for improved power handling |
| ESD Rating | Class 3 (>16 kV HBM); withstands common handling electrostatic events without parameter shift |
| AEC-Q101 Qualified | Validated for automotive electronics use including infotainment, body control, and sensor interfaces |
Pinout & Package
SOD-123 surface-mount plastic package (Case 425, Style 1), dimensions 1.60 × 2.69 × 1.16 mm, cathode indicated by polarity band, void-free thermosetting epoxy case with corrosion-resistant, solderable finish, rated for 260 °C reflow for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage rail; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential node; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Supports continuous regulation in space-constrained 3.3 V/5 V auxiliary rails without external heatsinking |
| ±5% Zener Tolerance | Enables accurate voltage clamping in feedback loops of DC-DC converters and LDO monitors |
| AEC-Q101 Qualification | Meets automotive stress testing requirements for temperature cycling, humidity, and mechanical shock |
| Class 3 ESD Robustness | Eliminates need for additional ESD protection components in front-end interface circuits |
| Pb-Free Construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs measuring temperature, pressure, or current in factory automation sensors. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precise 16 V reference to op-amp bias networks and ADC reference dividers. Use Value: Maintains <±0.8 V error over −40 to +85 °C due to low TC and tight tolerance, ensuring measurement repeatability. | Use Scenario: Overvoltage clamp on LIN bus transceiver power input exposed to load-dump transients in vehicle door modules. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting supply rail to 16.8 V peak during 12 V system surges. Use Value: Absorbs 225 W surge energy per IEC 61000-4-5 waveform without degradation, protecting downstream ICs. |
| Medical Portable Diagnostic Device | IoT Edge Node Power Management |
Use Scenario: Regulating bias voltage for photodiode amplifier stages in handheld pulse oximeters powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-leakage Zener establishing stable 16 V virtual ground for dual-supply op-amps. Use Value: Draws only 0.05 µA at 11.2 V reverse bias, extending battery life beyond 12 months in sleep mode. | Use Scenario: Providing regulated 16 V supply for RF power amplifier biasing in LPWAN gateways operating on solar-charged Li-ion packs. IC Role / Device Role / Timing Role: Precision shunt regulator compensating for battery voltage drift during charge/discharge cycles. Use Value: Delivers <1% output variation across 10–18 V input range due to 40 Ω ZZT, improving PA efficiency stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16 | Same 16 V nominal Zener voltage but ±6% tolerance; 350 mW rating; SOT-23 package | Higher thermal resistance (450 °C/W) limits power handling in compact layouts | Select when footprint compatibility with existing SOT-23 designs is required and tighter tolerance is not critical |
| MMBZ5245B | 16 V Zener with ±5% tolerance but 350 mW rating; SOT-23 package; no AEC-Q101 qualification | Lacks automotive qualification and Class 3 ESD rating; higher leakage (1 µA @ 12.2 V) | Choose for cost-sensitive consumer electronics where automotive reliability is unnecessary |
Compared with BZX84-C16 and MMBZ5245B, MMSZ16ET1G delivers superior thermal performance (150 °C/W RJL), guaranteed automotive qualification, and lower leakage-making it optimal for space-constrained, high-reliability 16 V regulation where long-term stability matters.
Availability
MMSZ16ET1G is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control modules, and medical portable diagnostic devices requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for MMSZ16ET1G 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 high-reliability, surface-mount Zener regulation in space-constrained environments-designed specifically for automotive PPAP compliance, AEC-Q101 stress validation, and high-volume automated assembly.
FAQ
What is the Zener voltage tolerance for MMSZ16ET1G?
MMSZ16ET1G has a nominal Zener voltage of 16 V with a standard tolerance of ±5%, meaning the actual measured VZ falls between 15.2 V and 16.8 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 revision 8, and applies across the full operating temperature range when derated per thermal curves.
Is MMSZ16ET1G qualified for automotive applications?
Yes, MMSZ16ET1G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the Specification Features section of the onsemi datasheet. This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock-validating its use in automotive body control, infotainment, and sensor modules where reliability under harsh conditions is mandatory.
What is the maximum power dissipation of MMSZ16ET1G at 100 °C ambient?
At 100 °C ambient, MMSZ16ET1G's power dissipation is derated from 500 mW at 75 °C using the specified 6.7 mW/°C slope. The calculation yields 500 mW − (100 − 75) × 6.7 mW = 332.5 mW. This value aligns with the steady-state derating curve in Figure 3 of the datasheet and assumes mounting on FR-5 board with minimum recommended footprint.
Does MMSZ16ET1G have Pb-free packaging?
Yes, MMSZ16ET1G is supplied in Pb-free packaging, as indicated by the "G" suffix in its part number and confirmed in the Ordering Information table. The device complies with RoHS Directive 2011/65/EU and uses lead-free solder paste compatible with standard reflow profiles, including peak temperature up to 260 °C for 10 seconds as specified in the Mechanical Characteristics section.
What is the reverse leakage current specification for MMSZ16ET1G?
MMSZ16ET1G specifies a maximum reverse leakage current (IR) of 0.05 µA at VR = 11.2 V and TA = 25 °C, per the Electrical Characteristics table on page 2. This ultra-low leakage supports battery-powered applications where standby current must be minimized, and remains stable across −55 to +150 °C per typical leakage curves in Figure 8 of the datasheet.
MMSZ16ET1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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
MMSZ16ET1 FAQ
1.How can I place an order for MMSZ16ET1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ16ET1 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 MMSZ16ET1 reliable?
The price and inventory of MMSZ16ET1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ16ET1 is usually 5 days.
3.What payment methods are accepted for MMSZ16ET1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ16ET1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ16ET1?
MMSZ16ET1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ16ET1 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 MMSZ16ET1?
For technical support, including MMSZ16ET1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ16ET1 requirements.
6.How does Aetrix verify that MMSZ16ET1 is sourced from the original manufacturer or authorized distributors?
All MMSZ16ET1 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 MMSZ16ET1 meets industry standards.
7.What is the process for return or replacement of MMSZ16ET1?
All MMSZ16ET1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ16ET1, 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 MMSZ16ET1 part is unused and in its original packaging.
Return procedure for MMSZ16ET1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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