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onsemi MMSZ13T1
- Part No.:
- MMSZ13T1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ13T1.pdf
- Description:
- DIODE ZENER 13V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,915
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Product details
Overview
MMSZ13T1G from onsemi is a 13 V ±5% Zener diode in SOD−123 package, rated for 500 mW power dissipation at 75°C ambient, with 30 Ω dynamic impedance at 5 mA test current and 0.1 μA reverse leakage at 10.4 V, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the MMSZ13T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, AEC−Q101 qualification status, ESD robustness (Class 3, >16 kV HBM), and direct alternative part comparisons for automotive and industrial design-in.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at nominal 13 V with ±5% tolerance. Its 30 Ω Zener impedance at IZT = 5 mA ensures stable regulation under moderate load transients.
Thermal performance is defined by RJA = 340°C/W and RJL = 150°C/W, supporting operation from −55°C to +150°C junction temperature. It meets AEC−Q101 for automotive use and carries Class 3 ESD rating per HBM.
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 precise clamping threshold for 13 V rail stabilization |
| Power Dissipation (PD) | 500 mW on FR−5 board at TL = 75°C - sets maximum continuous power handling before thermal derating |
| Zener Impedance (ZZT) | 30 Ω max at IZT = 5 mA - determines output voltage variation under changing load current |
| Reverse Leakage (IR) | 0.1 μA max at VR = 10.4 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - confirms low-loss forward conduction when used in dual-direction protection schemes |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - validates robustness against electrostatic discharge during handling and assembly |
| Junction Temp Range | −55°C to +150°C - enables deployment in under-hood automotive, industrial control, and outdoor electronics |
Pinout & Package
SOD−123 surface-mount plastic package (Case 425, 1.60 × 2.69 × 1.16 mm), cathode indicated by polarity band; optimized for automated placement and reflow soldering at 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; reverse-biased to conduct and clamp at VZ |
| 2 (Anode) | Reference/ground terminal | Typically tied to circuit ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW power rating on FR−5 board | Supports higher-energy transient suppression than standard 250 mW Zeners without requiring heatsinking |
| AEC−Q101 qualification | Validates reliability for automotive applications including body control modules and sensor interfaces |
| ESD Class 3 (>16 kV HBM) | Eliminates need for external ESD protection in many I/O line designs, reducing BOM count |
| Pb−Free (RoHS-compliant) packaging | Meets global environmental compliance requirements without sacrificing thermal or electrical performance |
| Small SOD−123 footprint | Enables high-density PCB layouts in space-constrained portable and IoT devices |
Applications
| Automotive Sensor Biasing | Industrial Analog Signal Clamping |
|---|---|
Use Scenario: Providing stable 13 V reference for Hall-effect position sensors in engine control units. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage protector for sensor supply rail. Use Value: Maintains sensor accuracy across temperature (−40°C to +125°C) with <±5% VZ tolerance and low TC drift. | Use Scenario: Limiting input voltage to ADC front-end in programmable logic controllers. IC Role / Device Role / Timing Role: Input overvoltage clamp protecting 12-bit SAR ADC from transient surges. Use Value: 30 Ω ZZT ensures <0.15 V deviation at 5 mA fault current, preserving measurement integrity. |
| Consumer Power Supply Feedback | Medical Diagnostic Equipment Protection |
Use Scenario: Secondary-side voltage sensing in isolated flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Precision feedback element in optocoupler-coupled regulation loop. Use Value: Tight 13.0 V ±5% tolerance enables accurate 12 V output regulation within ±1% system tolerance. | Use Scenario: Protecting analog front-end of portable ECG monitors from ESD and line transients. IC Role / Device Role / Timing Role: Low-leakage (<0.1 μA) overvoltage clamp on biopotential amplifier inputs. Use Value: Prevents amplifier saturation while introducing negligible offset error due to ultra-low 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-C13 | Same 13 V nominal Zener voltage, but SOT-23 package (larger footprint, higher RJA = 375°C/W), 400 mW rating | Less suitable for high-density automotive PCBs; lower power margin in thermally constrained layouts | Select when legacy SOT-23 footprint compatibility is required and thermal headroom exceeds 50 mW |
| 1N4742A | Through-hole DO-41 package, 12 V nominal, 1 W rating, ±5% tolerance, no AEC−Q101 or ESD Class 3 rating | Not suitable for surface-mount production or automotive qualification; requires manual insertion and wave soldering | Choose only for prototyping or non-automotive repair scenarios where board space and qualification are not constraints |
Compared with BZX84-C13 and 1N4742A, MMSZ13T1G offers superior thermal efficiency (RJA = 340°C/W), automotive-grade reliability (AEC−Q101), and industry-leading ESD robustness (>16 kV), making it the preferred choice for volume-manufactured automotive and industrial systems requiring long-term stability and zero-defect assembly.
Availability
MMSZ13T1G is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog I/O, and medical diagnostic equipment requiring stable component supply, RoHS compliance, and AEC−Q101 qualification.
Supply support for MMSZ13T1G 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.
MMSZ13T1G belongs to the MMSZxxxT1G Zener regulator series designed for high-reliability, surface-mount voltage reference and protection in space-constrained, thermally demanding environments.
FAQ
What is the nominal Zener voltage and tolerance of MMSZ13T1G?
MMSZ13T1G has a nominal Zener voltage of 13.0 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 12.35 V and 13.65 V when tested at IZT = 5 mA and TA = 25°C. This tight tolerance supports precision regulation in feedback loops and reference circuits where voltage accuracy directly impacts system performance.
Is MMSZ13T1G qualified for automotive applications?
Yes, MMSZ13T1G is AEC−Q101 qualified and PPAP capable, confirming its suitability for automotive applications such as engine control units, body electronics, and ADAS sensor interfaces. The device undergoes stress testing for temperature cycling, humidity, and mechanical shock to ensure long-term reliability in harsh vehicle environments.
What is the maximum power dissipation and thermal derating behavior of MMSZ13T1G?
MMSZ13T1G delivers 500 mW power dissipation on FR−5 board at lead temperature (TL) = 75°C, derating linearly at 6.7 mW/°C above that point. Its thermal resistance values-RJA = 340°C/W and RJL = 150°C/W-enable reliable operation up to +150°C junction temperature when properly mounted on standard PCBs.
Does MMSZ13T1G have ESD protection, and what level is specified?
MMSZ13T1G features an ESD rating of Class 3 (>16 kV) per the Human Body Model (HBM), verified per JESD22-A114. This high-level ESD robustness eliminates the need for additional protection components in many I/O and bias network applications, reducing design complexity and improving manufacturing yield.
What package type and marking does MMSZ13T1G use?
MMSZ13T1G uses the SOD−123 surface-mount package (Case 425, 1.60 × 2.69 × 1.16 mm) with cathode indicated by a polarity band. Its marking code is "A4", visible on the device body, and the "G" suffix denotes Pb−free (RoHS-compliant) construction per onsemi's standard packaging protocol.
MMSZ13T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ13T1 FAQ
1.How can I place an order for MMSZ13T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ13T1 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 MMSZ13T1 reliable?
The price and inventory of MMSZ13T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ13T1 is usually 5 days.
3.What payment methods are accepted for MMSZ13T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ13T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ13T1?
MMSZ13T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ13T1 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 MMSZ13T1?
For technical support, including MMSZ13T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ13T1 requirements.
6.How does Aetrix verify that MMSZ13T1 is sourced from the original manufacturer or authorized distributors?
All MMSZ13T1 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 MMSZ13T1 meets industry standards.
7.What is the process for return or replacement of MMSZ13T1?
All MMSZ13T1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ13T1, 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 MMSZ13T1 part is unused and in its original packaging.
Return procedure for MMSZ13T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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