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

onsemi MM3Z24VC

Name: MM3Z24VC
Brand: onsemi
SKU: MM3Z24VC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MM3Z24VC

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SC-90, SOD-323F

Datasheet:: MM3Z24VC.pdf

Description:: DIODE ZENER 24V 200MW SOD323F

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Inventory:9,040

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Product details

Overview

MM3Z24VC from onsemi is a 24 V ±5% Zener diode in SOD−323FL package, rated for 200 mW power dissipation, with zener impedance of 65 Ω at 5 mA test current and reverse leakage current ≤0.045 µA at 16.8 V. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.

For engineers reviewing the MM3Z24VC datasheet, pinout, applications, or equivalent options, key selection criteria include its 24 V nominal zener voltage, tight ±5% tolerance, low leakage at rated VR, thermal resistance of 595 °C/W, and compatibility with automated SMT assembly due to its matte tin finish and Pb-free RoHS-compliant construction.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown at precisely controlled V_Z = 24 V (min 22.8 V, max 25.2 V) under I_ZT = 5 mA. Its zener impedance (Z_ZT) is specified at 65 Ω, indicating stable regulation under small-signal dynamic load variations.

The MM3Z24VC is characterized at T_A = 25 °C with pulse-tested V_Z, and supports operation across −65 °C to +150 °C storage range and up to 150 °C junction temperature. Its SOD−323FL package enables high-density PCB layouts while maintaining thermal performance under derated power conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z @ I_ZT	22.8 V to 25.2 V (±5% tolerance at 5 mA; defines regulation setpoint accuracy)
P_D	200 mW (maximum continuous power dissipation at 25 °C ambient; requires derating above 25 °C)
Z_ZT @ I_ZT	65 Ω (dynamic impedance at 5 mA; determines output voltage variation under load transients)
I_R @ V_R	≤0.045 µA at 16.8 V (low reverse leakage ensures minimal quiescent current in standby regulation)
T_J max	150 °C (maximum junction temperature; sets upper thermal limit for reliability-critical designs)
R_JA	595 °C/W (junction-to-ambient thermal resistance on minimum PCB pad; guides heatsinking requirements)

Pinout & Package

SOD−323FL is a surface-mount, ultra-small plastic package with gull-wing leads, measuring 1.7 mm × 1.25 mm × 0.95 mm (L × W × H), matte tin-plated, Pb-free and RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 (Anode)	Forward conduction terminal / Cathode reference ground	Connected to circuit ground or lower potential node when used in reverse-biased regulation configuration
2 (Cathode)	Zener breakdown terminal / Voltage reference output	Provides regulated 24 V output relative to anode; marked with cathode band on package body

Key Features

Feature	Design Value
±5% V_Z tolerance	Enables accurate voltage clamping without post-assembly trimming in cost-sensitive consumer and industrial references
SOD−323FL footprint	Supports high-density routing and automated placement in space-constrained IoT sensor nodes and portable electronics
200 mW power rating	Suitable for low-current biasing, signal-level clamping, and reference generation in sub-1 mA analog stages
Pb-free & RoHS compliant	Meets global environmental compliance mandates without requiring special handling or exemptions in production

Applications

Industrial Sensor Signal Conditioning	USB-C Power Delivery Clamp
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters operating from 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Zener diode providing precise 24 V shunt reference for op-amp-based level-shifting and gain-setting networks. Use Value: Tight ±5% V_Z tolerance and low 65 Ω impedance ensure <±10 mV reference drift across temperature and load, improving measurement repeatability.	Use Scenario: Overvoltage protection clamp on USB-C CC line during hot-plug events where transient spikes exceed 20 V. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing surge energy by entering controlled reverse breakdown at 24 V. Use Value: Low 0.045 µA leakage at 16.8 V prevents false detection during normal 5 V operation while triggering reliably above 22.8 V.
Low-Power Battery Monitor Reference	Programmable Logic Controller Input Protection
Use Scenario: Generating stable threshold voltage for comparator-based battery end-of-discharge detection in coin-cell-powered asset trackers. IC Role / Device Role / Timing Role: Passive voltage reference sourcing minimal current (<1 µA) from high-impedance divider network. Use Value: Ultra-low leakage and 150 °C max junction temperature allow reliable operation across extended temperature ranges without calibration drift.	Use Scenario: Protecting 24 V DC digital input channels in PLC modules against field-wiring transients and ESD events. IC Role / Device Role / Timing Role: Primary shunt clamp limiting input voltage to safe levels before signal conditioning ICs. Use Value: 200 mW rating and 595 °C/W R_JA enable short-duration surge absorption without thermal runaway in industrial enclosures.

Industrial Sensor Signal Conditioning

USB-C Power Delivery Clamp

Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters operating from 3.3 V or 5 V rails.

IC Role / Device Role / Timing Role: Zener diode providing precise 24 V shunt reference for op-amp-based level-shifting and gain-setting networks.

Use Value: Tight ±5% V_Z tolerance and low 65 Ω impedance ensure <±10 mV reference drift across temperature and load, improving measurement repeatability.

Use Scenario: Overvoltage protection clamp on USB-C CC line during hot-plug events where transient spikes exceed 20 V.

IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing surge energy by entering controlled reverse breakdown at 24 V.

Use Value: Low 0.045 µA leakage at 16.8 V prevents false detection during normal 5 V operation while triggering reliably above 22.8 V.

Low-Power Battery Monitor Reference

Programmable Logic Controller Input Protection

Use Scenario: Generating stable threshold voltage for comparator-based battery end-of-discharge detection in coin-cell-powered asset trackers.

IC Role / Device Role / Timing Role: Passive voltage reference sourcing minimal current (<1 µA) from high-impedance divider network.

Use Value: Ultra-low leakage and 150 °C max junction temperature allow reliable operation across extended temperature ranges without calibration drift.

Use Scenario: Protecting 24 V DC digital input channels in PLC modules against field-wiring transients and ESD events.

IC Role / Device Role / Timing Role: Primary shunt clamp limiting input voltage to safe levels before signal conditioning ICs.

Use Value: 200 mW rating and 595 °C/W R_JA enable short-duration surge absorption without thermal runaway in industrial enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B24,115 (Nexperia)	Same 24 V ±5%, SOD-323 package, but 300 mW rating and higher I_R (0.1 µA @ 16.8 V)	Better surge handling margin; higher leakage may affect ultra-low-power sleep modes	Prefer for higher-energy transient suppression where board space allows same footprint
MMBZ5248BS-7-F (Diodes Inc.)	24 V ±5%, SOT-323 package (mechanically identical to SOD-323FL), 350 mW rating, Z_ZT = 35 Ω	Lower impedance improves regulation stability under dynamic loads; not qualified to same automotive temp range	Choose when tighter regulation under varying load is critical and extended temperature range is not required

Compared with BZX384-B24,115 and MMBZ5248BS-7-F, the MM3Z24VC offers the lowest reverse leakage and is optimized for long-term stability in temperature-variable environments, making it preferred for battery-powered and industrial-grade reference designs despite its lower power rating.

Availability

MM3Z24VC is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery clamp, low-power battery monitor reference, and programmable logic controller input protection requiring stable component supply and full traceability.

Supply support for MM3Z24VC 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 MM3Z series is designed specifically for precision voltage regulation and overvoltage protection in compact, high-reliability SMT applications-emphasizing tight tolerance, low leakage, and robust thermal performance in miniature packages.

FAQ

What is the nominal zener voltage and tolerance of the MM3Z24VC?

The MM3Z24VC has a nominal zener voltage of 24 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 22.8 V and 25.2 V when tested at I_ZT = 5 mA. This tolerance is confirmed in the onsemi datasheet Rev. 3 (August 2023) under Electrical Characteristics. The MM3Z24VC is intended for applications requiring predictable, repeatable clamping without post-production calibration.

What package type does the MM3Z24VC use, and is it RoHS compliant?

The MM3Z24VC uses the SOD−323FL package-a surface-mount, ultra-compact plastic case with gull-wing leads-and features a matte tin (Sn) finish. It is explicitly stated as Pb-free and RoHS compliant in the onsemi datasheet. The MM3Z24VC meets environmental compliance standards without requiring exemptions, supporting sustainable manufacturing and global market access.

What is the maximum power dissipation and thermal resistance of the MM3Z24VC?

The MM3Z24VC has a maximum power dissipation (P_D) of 200 mW at T_A = 25 °C and a junction-to-ambient thermal resistance (R_JA) of 595 °C/W when mounted on a PCB with minimum land pad. These values are defined in the Absolute Maximum Ratings and Thermal Characteristics sections of the official onsemi datasheet. Derating is required above 25 °C ambient, and the MM3Z24VC must be applied within these limits to ensure long-term reliability.

How does the MM3Z24VC perform in terms of reverse leakage current?

The MM3Z24VC exhibits a maximum reverse leakage current (I_R) of 0.045 µA at V_R = 16.8 V, as specified in the Electrical Characteristics table. This ultra-low leakage supports energy-sensitive applications such as battery-backed sensors and always-on monitoring circuits. The MM3Z24VC's leakage performance is among the lowest in its voltage class, contributing to extended operational lifetime in low-quiescent-current designs.

Can the MM3Z24VC be used as a direct replacement for other 24 V Zener diodes in SOD-323 packages?

The MM3Z24VC shares the SOD−323FL footprint with several industry-standard 24 V Zeners, but pin-compatible replacement requires verification of V_Z tolerance, Z_ZT, I_R, and thermal specs. While the MM3Z24VC matches mechanical dimensions, its 65 Ω impedance and 0.045 µA leakage differ from alternatives like BZX384-B24 or MMBZ5248BS-7-F. Therefore, the MM3Z24VC should be validated per circuit requirements-not assumed as drop-in-especially in precision reference or ultra-low-power roles.

MM3Z24VC Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SC-90, SOD-323F

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 24 V

Tolerance:: ±5%

Power - Max:: 200 mW

Impedance (Max) (Zzt):: 65 Ohms

Current - Reverse Leakage @ Vr:: 45 nA @ 16.8 V

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 10 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323F

MM3Z24VC FAQ

1.How can I place an order for MM3Z24VC through Aetrix?

Please submit a Request for Quotation (RFQ) for MM3Z24VC 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 MM3Z24VC reliable?

The price and inventory of MM3Z24VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z24VC is usually 5 days.

3.What payment methods are accepted for MM3Z24VC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z24VC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MM3Z24VC?

MM3Z24VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MM3Z24VC 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 MM3Z24VC?

For technical support, including MM3Z24VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z24VC requirements.

6.How does Aetrix verify that MM3Z24VC is sourced from the original manufacturer or authorized distributors?

All MM3Z24VC 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 MM3Z24VC meets industry standards.

7.What is the process for return or replacement of MM3Z24VC?

All MM3Z24VC units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z24VC, 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 MM3Z24VC part is unused and in its original packaging.

Return procedure for MM3Z24VC:

1.Submit a request within 90 days.

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

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