Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi SZMMSZ8V2T1G

Name: SZMMSZ8V2T1G
Brand: onsemi
SKU: SZMMSZ8V2T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SZMMSZ8V2T1G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SOD-123

Datasheet:: SZMMSZ8V2T1G.pdf

Description:: DIODE ZENER 8.2V 500MW SOD123

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,084

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SZMMSZ8V2T1G from onsemi is a 500 mW, ±5% tolerance Zener diode in SOD−123 package, with nominal reverse breakdown voltage of 8.2 V at 5 mA test current, dynamic impedance of 15 Ω, and leakage current ≤0.7 μA at 6.6 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog and automotive power management circuits.

For engineers reviewing the SZMMSZ8V2T1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal resistance (R_JA = 340°C/W), AEC−Q101 qualification, ESD robustness (>16 kV HBM), and SOD−123 board assembly compatibility.

Technical Context

This device operates as a two-terminal voltage regulator in reverse-biased mode, maintaining stable output voltage across load and line variations within its 5 mA to 20 mA operating range. Its temperature coefficient is +5.5 mV/°C near 8.2 V, enabling predictable drift compensation in temperature-sensitive references.

The SOD−123 package supports automated placement and reflow soldering at 260°C for 10 seconds, with cathode polarity marked by a band. Junction-to-ambient thermal resistance is 340°C/W on FR−5 board, limiting continuous power dissipation to 500 mW at T_L = 75°C with linear derating above that point.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	7.79–8.61 V at I_ZT = 5 mA; ensures ±5% regulation accuracy under standard test conditions
Zener Impedance (Z_ZT)	15 Ω max at I_ZT = 5 mA; low dynamic impedance improves regulation stability against load transients
Reverse Leakage (I_R)	≤0.7 μA at V_R = 6.6 V; enables low-quiescent-current bias networks in battery-powered systems
Power Dissipation (P_D)	500 mW on FR−5 board at T_L = 75°C; defines maximum steady-state power handling before thermal shutdown risk
Thermal Resistance (R_JA)	340°C/W; determines junction temperature rise per watt-critical for PCB layout and thermal relief design
ESD Rating	Class 3 (>16 kV) per HBM; allows direct handling and board-level integration without additional protection in most industrial environments
AEC−Q101 Qualified	Validated for automotive applications including engine control modules and body electronics requiring high 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.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to regulated voltage node; reverse-bias terminal where Zener breakdown occurs
2 (Non-banded End)	Anode	Connected to ground or lower-potential rail; completes current path during regulation

Key Features

Feature	Design Value
500 mW Power Rating	Enables use in compact, low-power voltage reference and clamping circuits without heatsinking
±5% Zener Voltage Tolerance	Supports cost-effective precision regulation in non-critical analog signal conditioning paths
AEC−Q101 Qualification	Confirms suitability for automotive under-hood and infotainment subsystems with extended temperature and lifetime requirements
ESD Robustness >16 kV (HBM)	Reduces need for external ESD protection in front-end sensor interfaces and I/O lines
Pb−Free SOD−123 Package	Meets RoHS compliance and supports lead-free reflow profiles up to 260°C for 10 s

Applications

Automotive Sensor Reference	Industrial Analog Input Protection
Use Scenario: Providing stable 8.2 V reference for analog-to-digital converters in engine coolant temperature sensors. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and overvoltage clamp. Use Value: Maintains ADC accuracy across −40°C to +125°C ambient while surviving load dump transients up to 40 V.	Use Scenario: Clamping input voltage to protect 10-bit SAR ADC front-end in programmable logic controller analog modules. IC Role / Device Role / Timing Role: Shunt regulator limiting input to 8.61 V maximum to prevent ADC saturation or damage. Use Value: Limits fault energy with <0.7 μA leakage at 6.6 V, preserving signal integrity in 4–20 mA loop interfaces.
Low-Power Battery Monitor	USB-C Port Overvoltage Clamp
Use Scenario: Monitoring lithium-ion cell voltage via resistive divider with precision reference in portable medical devices. IC Role / Device Role / Timing Role: Zener-based reference source for comparator threshold setting. Use Value: Delivers stable 8.2 V reference with 15 Ω dynamic impedance, minimizing divider error contribution in sub-100 μA supply designs.	Use Scenario: Protecting USB-C CC line receiver ICs from accidental 12 V adapter misconnection. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated above 8.61 V to divert surge current. Use Value: Responds within nanoseconds to transient overvoltage events while sustaining <0.7 μA standby leakage at 6.6 V.

Automotive Sensor Reference

Industrial Analog Input Protection

Use Scenario: Providing stable 8.2 V reference for analog-to-digital converters in engine coolant temperature sensors.

IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and overvoltage clamp.

Use Value: Maintains ADC accuracy across −40°C to +125°C ambient while surviving load dump transients up to 40 V.

Use Scenario: Clamping input voltage to protect 10-bit SAR ADC front-end in programmable logic controller analog modules.

IC Role / Device Role / Timing Role: Shunt regulator limiting input to 8.61 V maximum to prevent ADC saturation or damage.

Use Value: Limits fault energy with <0.7 μA leakage at 6.6 V, preserving signal integrity in 4–20 mA loop interfaces.

Low-Power Battery Monitor

USB-C Port Overvoltage Clamp

Use Scenario: Monitoring lithium-ion cell voltage via resistive divider with precision reference in portable medical devices.

IC Role / Device Role / Timing Role: Zener-based reference source for comparator threshold setting.

Use Value: Delivers stable 8.2 V reference with 15 Ω dynamic impedance, minimizing divider error contribution in sub-100 μA supply designs.

Use Scenario: Protecting USB-C CC line receiver ICs from accidental 12 V adapter misconnection.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated above 8.61 V to divert surge current.

Use Value: Responds within nanoseconds to transient overvoltage events while sustaining <0.7 μA standby leakage at 6.6 V.

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-C8V2	Same 8.2 V nominal Zener voltage, but ±5% tolerance and 350 mW rating in SOT-23; higher Z_ZT (30 Ω typical)	Lower power handling limits use in high-current clamping; SOT-23 footprint differs from SOD−123	Select when SOT-23 board space is constrained and 350 mW suffices
MMSZ8V2ET1G	Identical electrical specs and SOD−123 package, but ±2% tolerance option; same AEC−Q101 qualification and thermal performance	Higher precision required in feedback loops for DC-DC converters or voltage-controlled oscillators	Select when tighter voltage tolerance is needed without changing layout or thermal design

Compared with BZX84-C8V2, SZMMSZ8V2T1G offers 43% higher power rating and lower dynamic impedance, improving regulation under load variation; versus MMSZ8V2ET1G, it trades ±2% tolerance for lower cost while retaining identical automotive qualification and thermal behavior.

Availability

SZMMSZ8V2T1G is available at Aetrix Electronics and suitable for automotive sensor reference, industrial analog input protection, and low-power battery monitor applications requiring stable component supply, AEC−Q101 compliance, and Pb−free SOD−123 packaging.

Supply support for SZMMSZ8V2T1G 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.

SZMMSZ8V2T1G belongs to the MMSZxxxT1G/SZMMSZxxxT1G series-designed specifically for high-reliability, surface-mount Zener regulation in space-constrained and thermally demanding environments.

FAQ

What is the Zener voltage tolerance of SZMMSZ8V2T1G?

SZMMSZ8V2T1G has a nominal Zener voltage of 8.2 V with a standard tolerance of ±5%, meaning the actual measured V_Z falls between 7.79 V and 8.61 V at I_ZT = 5 mA and T_A = 25°C. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 13, June 2024).

Is SZMMSZ8V2T1G qualified for automotive applications?

Yes, SZMMSZ8V2T1G is AEC−Q101 qualified and PPAP capable, as explicitly stated in the Features section of the onsemi datasheet. The "SZ" prefix denotes compliance with automotive-specific site and control change requirements, making SZMMSZ8V2T1G suitable for engine control units, body electronics, and ADAS sensor modules.

What is the maximum reverse leakage current for SZMMSZ8V2T1G?

The maximum reverse leakage current for SZMMSZ8V2T1G is 0.7 μA at V_R = 6.6 V, per the Electrical Characteristics table on page 2 of the onsemi datasheet. This value is measured at T_A = 25°C and defines the upper bound of off-state current in clamping or reference configurations.

Does SZMMSZ8V2T1G have ESD protection?

Yes, SZMMSZ8V2T1G features an ESD rating of Class 3 (>16 kV) per the Human Body Model (HBM), as specified in the Features section of the onsemi datasheet. This level of robustness allows direct handling and integration into I/O protection circuits without supplemental TVS devices in many industrial and automotive contexts.

What is the thermal resistance of SZMMSZ8V2T1G?

SZMMSZ8V2T1G has a junction-to-ambient thermal resistance (R_JA) of 340°C/W when mounted on an FR−5 board, per the Maximum Ratings table on page 1 of the onsemi datasheet. This value assumes standard PCB copper area and is critical for calculating junction temperature rise under continuous 500 mW operation.

SZMMSZ8V2T1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 8.2 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 15 Ohms

Current - Reverse Leakage @ Vr:: 700 nA @ 5 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

SZMMSZ8V2T1G FAQ

1.How can I place an order for SZMMSZ8V2T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for SZMMSZ8V2T1G 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 SZMMSZ8V2T1G reliable?

The price and inventory of SZMMSZ8V2T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ8V2T1G is usually 5 days.

3.What payment methods are accepted for SZMMSZ8V2T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ8V2T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZMMSZ8V2T1G?

SZMMSZ8V2T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZMMSZ8V2T1G 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 SZMMSZ8V2T1G?

For technical support, including SZMMSZ8V2T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ8V2T1G requirements.

6.How does Aetrix verify that SZMMSZ8V2T1G is sourced from the original manufacturer or authorized distributors?

All SZMMSZ8V2T1G 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 SZMMSZ8V2T1G meets industry standards.

7.What is the process for return or replacement of SZMMSZ8V2T1G?

All SZMMSZ8V2T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ8V2T1G, 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 SZMMSZ8V2T1G part is unused and in its original packaging.

Return procedure for SZMMSZ8V2T1G:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…