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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

onsemi SZMM5Z16VT5G

Name: SZMM5Z16VT5G
Brand: onsemi
SKU: SZMM5Z16VT5G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SZMM5Z16VT5G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SC-79, SOD-523

Datasheet:: SZMM5Z16VT5G.pdf

Description:: DIODE ZENER 16.2V 500MW SOD523

Quantity:: RFQ Add To RFQ list

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Inventory:5,396

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Product details

Overview

SZMM5Z16VT5G from onsemi is a 16 V, ±5% tolerance Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 40 Ω maximum Zener impedance at 5 mA test current and <0.05 μA reverse leakage at 12.8 V, used for precision voltage clamping and overvoltage protection in space-constrained portable electronics.

For engineers reviewing the SZMM5Z16VT5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (250 °C/W), ESD rating (>16 kV HBM), AEC-Q101 qualification, and SOD-523 footprint compatibility with high-density PCB layouts.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its design centers on low-profile surface-mount reliability, with junction-to-ambient thermal resistance of 250 °C/W and derating to zero power at 150 °C ambient.

The SZMM5Z16VT5G features Class 3 ESD robustness (>16 kV HBM), Pb-free matte tin lead finish, and MSL 1 reflow capability up to 260 °C - all validated per AEC-Q101 for automotive-grade stress screening and PPAP readiness.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage	15.3–17.1 V @ I_ZT = 5 mA; ensures stable 16 V regulation within ±5% tolerance under nominal bias.
Power Rating	500 mW @ T_A = 25 °C; supports continuous clamping in low-power signal rails without heatsinking.
Zener Impedance	40 Ω max @ I_ZT = 5 mA; maintains tight voltage regulation under dynamic load transients.
Leakage Current	<0.05 μA @ V_R = 12.8 V; minimizes standby power loss in battery-powered systems.
ESD Rating	>16 kV per Human Body Model; protects downstream circuitry from electrostatic discharge in handheld assembly and field use.
Operating Temp	−65 °C to +150 °C; enables deployment in under-hood automotive and industrial environments.

Pinout & Package

SOD-523 package: 1.20 mm × 0.80 mm body, 0.70 mm height, void-free thermosetting plastic case with UL 94 V-0 rating, matte tin (100% Sn) lead finish, and MSL 1 reflow compatibility.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to regulated output node; polarity band identifies cathode for correct orientation during placement.
2	Anode	Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction.

Key Features

Feature	Design Value
AEC-Q101 Qualified	Validated for automotive applications including engine control modules and infotainment power rails.
SZ Prefix Compliance	Meets unique site and control change requirements for automotive supply chain traceability and PPAP submission.
Low Capacitance	105 pF @ V_R = 0 V, f = 1 MHz; preserves signal integrity in high-frequency analog and RF front-end protection.
Pb-Free & RoHS	Fully compliant with EU RoHS Directive 2011/65/EU and onsemi's Pb-Free soldering standards.

Applications

USB Port Protection	Automotive Sensor Interface
Use Scenario: Clamps transient overvoltage on USB D+/D− lines during hot-plug or ESD events. IC Role / Device Role / Timing Role: Passive voltage clamp protecting USB transceiver ICs from damage. Use Value: Prevents latch-up or permanent failure in USB PHYs while maintaining <105 pF loading for full-speed signaling.	Use Scenario: Stabilizes reference voltage for analog sensor signal conditioning in engine coolant or pressure sensors. IC Role / Device Role / Timing Role: Precision shunt regulator supplying stable bias to op-amp input stages. Use Value: Enables ±5% voltage accuracy over −40 °C to +125 °C, meeting AEC-Q100 Grade 1 requirements.
Smartphone Power Rail Clamp	Industrial PLC Input Protection
Use Scenario: Limits surge voltage on 16 V LDO input rails during battery insertion or charger fault conditions. IC Role / Device Role / Timing Role: Overvoltage suppression element placed before linear regulators in PMIC subsystems. Use Value: Absorbs 500 mW pulses without degradation, leveraging SOD-523's 0.8 mm width for compact multi-rail designs.	Use Scenario: Guards 16 V digital input channels against induced surges in factory automation I/O modules. IC Role / Device Role / Timing Role: Front-end transient voltage suppressor for optocoupler or microcontroller GPIO protection. Use Value: Withstands >16 kV HBM ESD and operates reliably from −65 °C to +150 °C in uncontrolled cabinet environments.

USB Port Protection

Automotive Sensor Interface

Use Scenario: Clamps transient overvoltage on USB D+/D− lines during hot-plug or ESD events.

IC Role / Device Role / Timing Role: Passive voltage clamp protecting USB transceiver ICs from damage.

Use Value: Prevents latch-up or permanent failure in USB PHYs while maintaining <105 pF loading for full-speed signaling.

Use Scenario: Stabilizes reference voltage for analog sensor signal conditioning in engine coolant or pressure sensors.

IC Role / Device Role / Timing Role: Precision shunt regulator supplying stable bias to op-amp input stages.

Use Value: Enables ±5% voltage accuracy over −40 °C to +125 °C, meeting AEC-Q100 Grade 1 requirements.

Smartphone Power Rail Clamp

Industrial PLC Input Protection

Use Scenario: Limits surge voltage on 16 V LDO input rails during battery insertion or charger fault conditions.

IC Role / Device Role / Timing Role: Overvoltage suppression element placed before linear regulators in PMIC subsystems.

Use Value: Absorbs 500 mW pulses without degradation, leveraging SOD-523's 0.8 mm width for compact multi-rail designs.

Use Scenario: Guards 16 V digital input channels against induced surges in factory automation I/O modules.

IC Role / Device Role / Timing Role: Front-end transient voltage suppressor for optocoupler or microcontroller GPIO protection.

Use Value: Withstands >16 kV HBM ESD and operates reliably from −65 °C to +150 °C in uncontrolled cabinet environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584-C16	Same 16 V nominal Zener, ±5% tolerance, but in SOD-323 (1.7 × 1.3 mm); 350 mW rating; no AEC-Q101 qualification.	Limited to commercial-grade consumer products; unsuitable for automotive or extended-temperature industrial use.	Select only when board space allows larger footprint and AEC-Q101 compliance is not required.
MMSZ5245B	16 V Zener, ±5%, SOD-123 package (3.7 × 1.6 mm); 500 mW rating; no ESD rating specified; not AEC-Q101 qualified.	Higher thermal mass but incompatible with ultra-dense layouts; lacks documented ESD robustness for handheld ESD-prone zones.	Prefer where mechanical robustness outweighs size constraints and ESD immunity is secondary.

Compared with BZX584-C16 and MMSZ5245B, the SZMM5Z16VT5G uniquely combines AEC-Q101 qualification, >16 kV HBM ESD rating, and minimal 1.2 × 0.8 mm SOD-523 footprint - making it the only option for automotive-grade, space-constrained, high-reliability Zener clamping.

Availability

SZMM5Z16VT5G is available at Aetrix Electronics and suitable for USB port protection, automotive sensor interfaces, and smartphone power rail clamping requiring stable component supply, consistent lot-to-lot performance, and long-term lifecycle support.

Supply support for SZMM5Z16VT5G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MM5Z/SZMM5Z series was engineered specifically for miniaturized, high-reliability voltage regulation in portable and automotive electronics - prioritizing low profile, AEC-Q101 compliance, and robust ESD immunity in SOD-523 packaging.

FAQ

What is the Zener voltage tolerance of SZMM5Z16VT5G?

The SZMM5Z16VT5G has a standard tolerance of ±5%, with a guaranteed Zener voltage range of 15.3 V to 17.1 V at 5 mA test current (I_ZT) and 25 °C ambient temperature. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 19, April 2025), and applies directly to the SZMM5Z16VT5G variant as part of the SZMM5ZxxxT5G series.

Is SZMM5Z16VT5G qualified for automotive applications?

Yes, SZMM5Z16VT5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section. The "SZ" prefix denotes compliance with automotive-specific site and control change requirements, and the device meets stress testing standards for temperature cycling, humidity, and mechanical shock required for under-hood and cabin electronics.

What is the maximum reverse leakage current for SZMM5Z16VT5G?

The maximum reverse leakage current for SZMM5Z16VT5G is 0.05 μA at V_R = 12.8 V and T_A = 25 °C, per the Electrical Characteristics table on page 3 of the onsemi datasheet. This low leakage supports ultra-low-power operation in battery-backed circuits and sensor bias networks where standby current must be minimized.

Does SZMM5Z16VT5G have an ESD rating, and if so, what is it?

Yes, SZMM5Z16VT5G has an ESD rating of Class 3 (>16 kV) per the Human Body Model (HBM), as specified in the datasheet's Specification Features section. This rating is verified through standardized AEC-Q101 testing and ensures robustness against electrostatic discharge during handling, assembly, and end-use in portable and automotive environments.

What is the thermal resistance (R_JA) of SZMM5Z16VT5G?

The junction-to-ambient thermal resistance (R_JA) of SZMM5Z16VT5G is 250 °C/W, measured on an FR-4 board with single-sided copper and a 1 cm² mounting pad, as defined in the Maximum Ratings table. This value governs power derating behavior - for example, usable power drops to 400 mW at 50 °C ambient - and informs thermal layout decisions for sustained operation.

SZMM5Z16VT5G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SC-79, SOD-523

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 16.2 V

Tolerance:: ±5.56%

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:: -65°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-523

SZMM5Z16VT5G FAQ

1.How can I place an order for SZMM5Z16VT5G through Aetrix?

Please submit a Request for Quotation (RFQ) for SZMM5Z16VT5G 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 SZMM5Z16VT5G reliable?

The price and inventory of SZMM5Z16VT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z16VT5G is usually 5 days.

3.What payment methods are accepted for SZMM5Z16VT5G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z16VT5G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZMM5Z16VT5G?

SZMM5Z16VT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZMM5Z16VT5G 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 SZMM5Z16VT5G?

For technical support, including SZMM5Z16VT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z16VT5G requirements.

6.How does Aetrix verify that SZMM5Z16VT5G is sourced from the original manufacturer or authorized distributors?

All SZMM5Z16VT5G 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 SZMM5Z16VT5G meets industry standards.

7.What is the process for return or replacement of SZMM5Z16VT5G?

All SZMM5Z16VT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z16VT5G, 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 SZMM5Z16VT5G part is unused and in its original packaging.

Return procedure for SZMM5Z16VT5G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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