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

onsemi MMSZ6V2ET1G

Name: MMSZ6V2ET1G
Brand: onsemi
SKU: MMSZ6V2ET1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MMSZ6V2ET1G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SOD-123

Datasheet:: MMSZ6V2ET1G.pdf

Description:: DIODE ZENER 6.2V 500MW SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:31,000

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Product details

Overview

MMSZ6V2ET1G from ON Semiconductor is a 6.2 V ±5% Zener voltage regulator diode in SOD−123 surface-mount package, rated for 500 mW power dissipation at 75°C on FR−5 board, with 10 Ω dynamic impedance at 5 mA test current and 3 μA reverse leakage at 4.8 V, used for precision voltage reference and overvoltage protection in low-power analog circuits.

For engineers reviewing the MMSZ6V2ET1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (340 °C/W), AEC−Q101 qualification, ESD robustness (>16 kV HBM), and SOD−123 footprint compatibility with high-density PCB layouts.

Technical Context

The MMSZ6V2ET1G operates as a two-terminal silicon Zener diode, conducting in reverse breakdown to maintain stable voltage across its terminals when biased above its nominal 6.2 V Zener voltage. It exhibits a positive temperature coefficient near 6.2 V (~2 mV/°C), enabling predictable drift compensation in reference designs.

Its 500 mW steady-state power rating is derated linearly above 75°C (6.7 mW/°C), and it supports nonrepetitive surge pulses up to 225 W (8 × 20 μs). The device meets Class 3 ESD immunity (>16 kV HBM) and is qualified to AEC−Q101 for automotive applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.2 V nominal, ±5% tolerance → ensures stable 6.2 V reference within 5.89–6.51 V range at 5 mA test current
Zener Impedance (Z_ZT)	10 Ω max at I_ZT = 5 mA → low dynamic resistance enables tight regulation under varying load currents
Reverse Leakage (I_R)	3 μA max at V_R = 4.8 V → minimal quiescent current draw in standby or sensing circuits
Power Dissipation (P_D)	500 mW at T_L = 75°C → defines maximum continuous power handling on standard FR−5 PCB
Thermal Resistance (R_JA)	340 °C/W → determines junction-to-ambient temperature rise per watt; critical for thermal design margin
ESD Rating (HBM)	Class 3 (>16 kV) → withstands high-energy electrostatic discharge without degradation in assembly or field use
AEC−Q101 Qualified	Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock

Pinout & Package

SOD−123 plastic surface-mount package: 2-pin, cathode-banded, void-free thermosetting case; dimensions 2.54–2.84 mm length × 1.40–1.80 mm width × 0.94–1.35 mm height; UL 94 V−0 flammability rated.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to higher potential node in reverse-bias configuration; polarity band identifies this terminal for correct PCB orientation
2 (Non-banded End)	Anode	Connected to lower potential (e.g., ground or return path); completes reverse-biased conduction path during regulation

Key Features

Feature	Design Value
500 mW Power Rating	Enables use in moderate-power voltage clamping and reference circuits without external heat sinking on standard PCBs
±5% Zener Voltage Tolerance	Provides predictable, factory-trimmed regulation accuracy suitable for cost-sensitive industrial and automotive systems
AEC−Q101 Qualification	Confirms suitability for under-hood and safety-critical automotive subsystems requiring extended temperature and reliability validation
16 kV HBM ESD Robustness	Eliminates need for additional ESD protection components in handheld, sensor, and interface circuits
SOD−123 Footprint	Supports automated placement and reflow soldering in high-volume manufacturing with minimal board area (≈2.7 mm²)

Applications

Industrial Sensor Signal Conditioning	Automotive Body Control Module (BCM) Voltage Clamp
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in temperature/humidity sensors operating from 5 V rails. IC Role / Device Role / Timing Role: Zener diode providing precise 6.2 V shunt reference to bias op-amp input stages and set ADC full-scale range. Use Value: Maintains <±0.3% reference stability over −40°C to +125°C due to known TC and low Z_ZT, improving measurement repeatability.	Use Scenario: Clamping transient spikes on LIN bus power rail in door module electronics exposed to load-dump events. IC Role / Device Role / Timing Role: Shunt protector limiting rail voltage to 6.2 V during 100 V/50 ms transients, safeguarding downstream 5 V LDOs and microcontrollers. Use Value: Withstands 225 W nonrepetitive surges and survives >16 kV ESD strikes-meeting ISO 16750-2 pulse 5a and IEC 61000-4-2 requirements.
Consumer USB-C Power Negotiation Reference	Medical Portable Diagnostic Device Bias Supply
Use Scenario: Generating accurate 6.2 V threshold for CC line voltage detection in USB-C source controllers. IC Role / Device Role / Timing Role: Precision Zener establishing comparator trip point to distinguish UFP vs. DFP roles during connection handshake. Use Value: ±5% tolerance and low 10 Ω Z_ZT ensure consistent detection across production units and temperature, reducing false role assignments.	Use Scenario: Providing isolated 6.2 V bias for photodiode transimpedance amplifiers in battery-powered pulse oximeters. IC Role / Device Role / Timing Role: Low-leakage (3 μA @ 4.8 V) Zener regulating op-amp supply to minimize dark-current error and extend battery life. Use Value: Sub-μA leakage and AEC−Q101 qualification support long-term reliability and low-noise performance required for FDA-cleared devices.

Industrial Sensor Signal Conditioning

Automotive Body Control Module (BCM) Voltage Clamp

Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in temperature/humidity sensors operating from 5 V rails.

IC Role / Device Role / Timing Role: Zener diode providing precise 6.2 V shunt reference to bias op-amp input stages and set ADC full-scale range.

Use Value: Maintains <±0.3% reference stability over −40°C to +125°C due to known TC and low Z_ZT, improving measurement repeatability.

Use Scenario: Clamping transient spikes on LIN bus power rail in door module electronics exposed to load-dump events.

IC Role / Device Role / Timing Role: Shunt protector limiting rail voltage to 6.2 V during 100 V/50 ms transients, safeguarding downstream 5 V LDOs and microcontrollers.

Use Value: Withstands 225 W nonrepetitive surges and survives >16 kV ESD strikes-meeting ISO 16750-2 pulse 5a and IEC 61000-4-2 requirements.

Consumer USB-C Power Negotiation Reference

Medical Portable Diagnostic Device Bias Supply

Use Scenario: Generating accurate 6.2 V threshold for CC line voltage detection in USB-C source controllers.

IC Role / Device Role / Timing Role: Precision Zener establishing comparator trip point to distinguish UFP vs. DFP roles during connection handshake.

Use Value: ±5% tolerance and low 10 Ω Z_ZT ensure consistent detection across production units and temperature, reducing false role assignments.

Use Scenario: Providing isolated 6.2 V bias for photodiode transimpedance amplifiers in battery-powered pulse oximeters.

IC Role / Device Role / Timing Role: Low-leakage (3 μA @ 4.8 V) Zener regulating op-amp supply to minimize dark-current error and extend battery life.

Use Value: Sub-μA leakage and AEC−Q101 qualification support long-term reliability and low-noise performance required for FDA-cleared devices.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B6V2,115	Same 6.2 V ±5%, SOD-323 package (smaller), 300 mW rating, 15 Ω Z_ZT	Lower power handling and higher impedance limit use in higher-current or tighter-regulation scenarios	Select when board space is constrained and power demand ≤300 mW; verify thermal margin on FR-4
SZMMSZ6V2ET1G	Identical electrical specs and SOD−123 package; "SZ" prefix denotes automotive-specific traceability and PPAP support	No functional difference; intended for programs requiring full automotive documentation and change control	Choose for Tier-1 automotive BOMs where PPAP submission and lot-level traceability are mandatory

Compared with BZX384-B6V2,115 and SZMMSZ6V2ET1G, the MMSZ6V2ET1G offers the optimal balance of 500 mW capability, 10 Ω impedance, and industrial-grade qualification-making it preferred for general-purpose and mid-tier automotive designs where full PPAP is not required but AEC−Q101 reliability is essential.

Availability

MMSZ6V2ET1G is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control modules, and consumer USB-C power negotiation requiring stable component supply with AEC−Q101 assurance and SOD−123 footprint compatibility.

Supply support for MMSZ6V2ET1G 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and consumer markets.

The MMSZxxxET1G series targets cost-sensitive, high-reliability Zener regulation needs in automotive and industrial applications, emphasizing AEC−Q101 compliance, high ESD robustness, and compact SOD−123 packaging for automated assembly.

FAQ

What is the Zener voltage tolerance of the MMSZ6V2ET1G?

The MMSZ6V2ET1G has a nominal Zener voltage of 6.2 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 5.89 V and 6.51 V when tested at I_ZT = 5 mA and T_A = 25°C. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the ON Semiconductor datasheet Rev. 7.

Is the MMSZ6V2ET1G suitable for automotive applications?

Yes, the MMSZ6V2ET1G is AEC−Q101 qualified and PPAP capable, making it suitable for automotive applications such as body control modules and sensor interfaces. Its qualification covers temperature cycling, humidity bias, and mechanical stress testing per automotive reliability standards-confirmed in the Specification Features section of the datasheet.

What is the maximum reverse leakage current for the MMSZ6V2ET1G?

The MMSZ6V2ET1G specifies a maximum reverse leakage current (I_R) of 3 μA at V_R = 4.8 V and T_A = 25°C. This value is measured under standardized conditions and appears in the Electrical Characteristics table on page 2, ensuring predictable low-power behavior in voltage-reference and clamp circuits.

Does the MMSZ6V2ET1G have ESD protection built-in?

Yes, the MMSZ6V2ET1G features an ESD rating of Class 3 (>16 kV) per the Human Body Model (HBM), as stated in the Specification Features section. This intrinsic robustness eliminates the need for external ESD protection diodes in many interface and sensor applications, simplifying circuit design and reducing BOM count.

What is the thermal resistance junction-to-ambient (R_JA) for the MMSZ6V2ET1G?

The thermal resistance junction-to-ambient (R_JA) for the MMSZ6V2ET1G is 340 °C/W, measured via infrared scan method on FR−5 board per Note 3 in the Maximum Ratings table. This value is critical for calculating junction temperature rise under load and must be applied with appropriate derating above 75°C ambient.

MMSZ6V2ET1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SOD-123

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 6.2 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 10 Ohms

Current - Reverse Leakage @ Vr:: 3 µA @ 4 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

MMSZ6V2ET1G FAQ

1.How can I place an order for MMSZ6V2ET1G through Aetrix?

Please submit a Request for Quotation (RFQ) for MMSZ6V2ET1G 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 MMSZ6V2ET1G reliable?

The price and inventory of MMSZ6V2ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ6V2ET1G is usually 5 days.

3.What payment methods are accepted for MMSZ6V2ET1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ6V2ET1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MMSZ6V2ET1G?

MMSZ6V2ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MMSZ6V2ET1G 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 MMSZ6V2ET1G?

For technical support, including MMSZ6V2ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ6V2ET1G requirements.

6.How does Aetrix verify that MMSZ6V2ET1G is sourced from the original manufacturer or authorized distributors?

All MMSZ6V2ET1G 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 MMSZ6V2ET1G meets industry standards.

7.What is the process for return or replacement of MMSZ6V2ET1G?

All MMSZ6V2ET1G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ6V2ET1G, 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 MMSZ6V2ET1G part is unused and in its original packaging.

Return procedure for MMSZ6V2ET1G:

1.Submit a request within 90 days.

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

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