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onsemi SZMMSZ13ET1G
- Part No.:
- SZMMSZ13ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ13ET1G.pdf
- Description:
- DIODE ZENER 13V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,995
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Product details
Overview
SZMMSZ13ET1G from onsemi is a 13 V ±5% Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 30 Ω dynamic impedance at 5 mA test current and 0.1 µA reverse leakage at 10.6 V, used for precision voltage regulation and overvoltage protection in automotive power rails and industrial sensor interfaces.
For engineers reviewing the SZMMSZ13ET1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal derating behavior, AEC-Q101 qualification status, and SOD-123 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in silicon PN junction, with nominal Zener voltage of 13 V measured at 5 mA (IZT1) and 1 mA (IZT2) test currents. Its temperature coefficient is +6.5 mV/°C near 13 V, enabling stable regulation across −55 °C to +150 °C junction range.
Designed for surface-mount assembly on FR-4/FR-5 boards, it delivers 225 W peak surge capability under 8 × 20 µs waveform per IEC 61000-4-5, and features Class 3 ESD robustness (>16 kV HBM), Pb-free construction, and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.35 V min / 13.0 V nom / 13.65 V max at IZT = 5 mA - defines regulated output voltage window under standard test conditions |
| Zener Impedance (ZZT) | 30 Ω max at IZT = 5 mA - determines output voltage variation under load current changes |
| Reverse Leakage Current (IR) | 0.1 µA max at VR = 10.6 V - ensures low standby power loss in voltage-clamp configurations |
| Power Dissipation (PD) | 500 mW at TL = 75 °C, derated 6.7 mW/°C above - sets maximum continuous operating power on standard PCB |
| Thermal Resistance (RJA) | 340 °C/W - indicates junction-to-ambient heat transfer efficiency on FR-5 board |
| ESD Rating | Class 3 (>16 kV) per HBM - supports handling without special ESD controls in production environments |
| AEC-Q101 Qualified | Yes - confirms suitability for automotive electronic control units requiring stress-tested component reliability |
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, rated for 260 °C soldering (10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal during Zener operation |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes current path during clamping/regulation |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q101 qualified with PPAP capability - enables direct use in Tier-1 automotive modules without requalification |
| Pb-Free Construction | RoHS-compliant SOD-123 package with "G" suffix - meets global environmental compliance requirements without lead content |
| High Surge Robustness | 225 W nonrepetitive peak power (8 × 20 µs) - withstands transient overvoltage events in 12 V vehicle systems |
| Low-Leakage Regulation | 0.1 µA max reverse leakage at 10.6 V - minimizes quiescent current in battery-powered sensor nodes |
| Thermal Stability | +6.5 mV/°C temperature coefficient near 13 V - maintains tight regulation across extended industrial temperature range |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping transients on 12 V battery-fed ECUs during load dump or jump-start events. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing overvoltage protection at power input stage. Use Value: Limits voltage to ≤13.65 V with 30 Ω dynamic impedance, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Stabilizing reference voltage for analog front-end circuits in temperature or pressure sensors. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC biasing and signal scaling. Use Value: Delivers 13.0 V ±5% with <0.1 µA leakage, ensuring measurement accuracy in low-power industrial IoT nodes. |
| Consumer Device Battery Monitoring | Medical Diagnostic Equipment Power Supervision |
Use Scenario: Monitoring Li-ion battery pack voltage via resistive divider with regulated reference. IC Role / Device Role / Timing Role: Stable Zener reference enabling accurate state-of-charge estimation. Use Value: Maintains ±5% tolerance over −40 °C to +85 °C ambient, supporting reliable battery management in portable electronics. | Use Scenario: Providing fail-safe voltage supervision for isolated power supplies in diagnostic imaging subsystems. IC Role / Device Role / Timing Role: Redundant overvoltage clamp protecting FPGA configuration circuitry. Use Value: AEC-Q101 qualification and 150 °C max junction temperature support safety-critical operation in Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C13 | Same 13 V nominal Zener voltage, but SOT-23 package (higher RJA = 375 °C/W), 400 mW rating, no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to commercial-temperature consumer applications | Select when cost-sensitive commercial designs prioritize smaller footprint over thermal performance |
| MMSZ13ET1G | Identical electrical specs and SOD-123 package, but lacks SZ prefix and AEC-Q101 qualification; same marking "CN1" | Acceptable for industrial or consumer use where automotive reliability certification is not required | Select when automotive qualification is unnecessary and BOM simplification is preferred |
Compared with SZMMSZ13ET1G, BZX84-C13 offers smaller size but reduced thermal margin and no automotive qualification, while MMSZ13ET1G provides identical performance without AEC-Q101 - making SZMMSZ13ET1G the only choice for safety-critical automotive voltage clamping.
Availability
SZMMSZ13ET1G is available at Aetrix Electronics and suitable for automotive power protection, industrial sensor conditioning, and medical equipment supervision requiring stable component supply and long-term lifecycle assurance.
Supply support for SZMMSZ13ET1G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMSZ/SZMMSZ series targets compact, high-reliability voltage regulation in space-constrained and mission-critical systems, emphasizing AEC-Q101 compliance, low leakage, and surge robustness.
FAQ
What is the Zener voltage tolerance of SZMMSZ13ET1G?
SZMMSZ13ET1G has a nominal Zener voltage of 13.0 V with a standard tolerance of ±5%, resulting in a guaranteed range of 12.35 V to 13.65 V at 5 mA test current (IZT1). This tolerance is verified per onsemi's Electrical Characteristics table and applies across the full operating temperature range.
Is SZMMSZ13ET1G suitable for automotive applications?
Yes, SZMMSZ13ET1G is AEC-Q101 qualified and PPAP capable, with explicit automotive qualification noted in its datasheet. The "SZ" prefix denotes compliance with unique site and control change requirements for automotive and other high-reliability applications, confirming its suitability for engine control units and ADAS power domains.
What is the maximum power dissipation for SZMMSZ13ET1G on a standard PCB?
SZMMSZ13ET1G is rated for 500 mW total power dissipation on FR-5 board at lead temperature (TL) of 75 °C, with linear derating of 6.7 mW/°C above that temperature. This rating assumes use of onsemi's minimum recommended footprint and accounts for thermal resistance of 340 °C/W junction-to-ambient.
Does SZMMSZ13ET1G have ESD protection built-in?
Yes, SZMMSZ13ET1G features an ESD rating of Class 3 (>16 kV) per Human Body Model, as confirmed in the Specification Features section of the official onsemi datasheet. This level of robustness eliminates need for external ESD protection in most board-level implementations.
What package type does SZMMSZ13ET1G use and what are its dimensions?
SZMMSZ13ET1G uses the SOD-123 surface-mount package (Case 425, Style 1), measuring 1.60 mm × 2.69 mm × 1.16 mm. The cathode is marked by a band on terminal 1, and the package is Pb-free with RoHS compliance confirmed by the "G" suffix in the part number.
SZMMSZ13ET1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ13ET1G FAQ
1.How can I place an order for SZMMSZ13ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ13ET1G 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 SZMMSZ13ET1G reliable?
The price and inventory of SZMMSZ13ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ13ET1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ13ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ13ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ13ET1G?
SZMMSZ13ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ13ET1G 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 SZMMSZ13ET1G?
For technical support, including SZMMSZ13ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ13ET1G requirements.
6.How does Aetrix verify that SZMMSZ13ET1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ13ET1G 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 SZMMSZ13ET1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ13ET1G?
All SZMMSZ13ET1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ13ET1G, 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 SZMMSZ13ET1G part is unused and in its original packaging.
Return procedure for SZMMSZ13ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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