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

onsemi MM3Z75VC

Name: MM3Z75VC
Brand: onsemi
SKU: MM3Z75VC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MM3Z75VC

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SC-90, SOD-323F

Datasheet:: MM3Z75VC.pdf

Description:: DIODE ZENER 75V 200MW SOD323F

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Product details

Overview

MM3Z75VC from onsemi is a 75 V ±5% tolerance Zener diode in SOD−323FL package, rated for 200 mW power dissipation, with 240 Ω zener impedance at 2 mA test current and 0.045 µA reverse leakage at 52.5 V, used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the MM3Z75VC datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 5% V_Z tolerance, low I_R at high V_R, thermal resistance of 595 °C/W, and compatibility with automated SMT assembly on minimal PCB land pads.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown at nominal 75 V with specified dynamic impedance (Z_ZT = 240 Ω @ I_ZT = 2 mA) and knee impedance (Z_ZK = 470 Ω @ I_ZK = 0.5 mA). It is characterized at T_A = 25 °C with pulse-tested V_Z and defined thermal limits (T_J ≤ 150 °C, R_JA = 595 °C/W).

The MM3Z75VC exhibits forward voltage ≤ 1.0 V at 10 mA and reverse leakage I_R ≤ 0.045 µA at V_R = 52.5 V. Its SOD−323FL package features matte tin finish, Pb-free construction, and RoHS compliance - optimized for space-constrained, low-power regulation where stable reference voltage and low leakage are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	71.25 V (min) to 78.75 V (max) at I_ZT = 2 mA - defines regulated output range under standard test conditions
Power Dissipation (P_D)	200 mW - maximum continuous power handling at T_A = 25 °C on minimal PCB pad
Zener Impedance (Z_ZT)	240 Ω @ I_ZT = 2 mA - indicates voltage stability under small-signal AC superposition
Reverse Leakage (I_R)	≤ 0.045 µA @ V_R = 52.5 V - ensures minimal current draw in standby or high-impedance bias networks
Thermal Resistance (R_JA)	595 °C/W - determines junction temperature rise per mW dissipated on standard PCB layout
Package	SOD−323FL (Case 477AB) - ultra-small 1.7 mm × 1.25 mm surface-mount outline with cathode marking

Pinout & Package

SOD−323FL is a two-terminal surface-mount package with anode (Pin 1) and cathode (Pin 2) marked by cathode band on the body. The device uses standard orientation with cathode terminal adjacent to marking "Z<".

Pin/Terminal	Circuit Role	Design Meaning
1 (Anode)	Forward conduction terminal / low-side connection	Connected to ground or lower potential node when used in reverse-biased regulation configuration
2 (Cathode)	Zener breakdown terminal / high-side connection	Connected to supply rail or regulated node; polarity marking identifies this terminal on device body

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Enables accurate voltage clamping without post-production trimming in cost-sensitive designs
200 mW power rating in SOD−323FL	Supports regulation in low-current sensor interfaces and bias networks without thermal derating on standard layouts
0.045 µA max reverse leakage at 52.5 V	Maintains high input impedance in precision reference dividers and battery-monitoring circuits
Pb-free, RoHS-compliant matte tin finish	Ensures solderability and long-term reliability in lead-free reflow processes per JEDEC J-STD-020

Applications

Industrial Sensor Signal Conditioning	Low-Power Microcontroller Reset Circuit
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in temperature/humidity transmitters operating from 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Zener diode providing precise 75 V reference for high-voltage auxiliary monitoring circuitry or scaled-down feedback path. Use Value: Tight 5% V_Z tolerance and sub-µA leakage ensure measurement accuracy remains unaffected by supply drift or loading effects.	Use Scenario: Generating clean, stable reset threshold for microcontrollers in battery-powered IoT edge nodes with wide input voltage range. IC Role / Device Role / Timing Role: Voltage reference element in RC-based reset generator or supervisor IC bias network requiring known breakdown point. Use Value: Low thermal resistance (595 °C/W) and stable V_Z over temperature allow reliable reset assertion across −40 °C to +85 °C ambient.
Automotive Body Control Module (BCM) Voltage Clamp	Programmable Logic Controller (PLC) Input Protection
Use Scenario: Clamping transient overvoltage on LIN bus or sensor supply lines in automotive BCMs exposed to load dump or ESD events. IC Role / Device Role / Timing Role: Transient voltage suppression element placed across protected line and ground, leveraging fast Zener response. Use Value: 200 mW rating and robust 150 °C junction temperature limit support intermittent surge handling without degradation.	Use Scenario: Protecting digital input channels in industrial PLC modules against accidental 24 V DC miswiring or field-induced surges. IC Role / Device Role / Timing Role: Precision clamp limiting input voltage to safe level before signal conditioning stage, reducing need for additional TVS stages. Use Value: Predictable 75 V breakdown with 240 Ω dynamic impedance enables repeatable clamping behavior across production lots.

Industrial Sensor Signal Conditioning

Low-Power Microcontroller Reset Circuit

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

IC Role / Device Role / Timing Role: Zener diode providing precise 75 V reference for high-voltage auxiliary monitoring circuitry or scaled-down feedback path.

Use Value: Tight 5% V_Z tolerance and sub-µA leakage ensure measurement accuracy remains unaffected by supply drift or loading effects.

Use Scenario: Generating clean, stable reset threshold for microcontrollers in battery-powered IoT edge nodes with wide input voltage range.

IC Role / Device Role / Timing Role: Voltage reference element in RC-based reset generator or supervisor IC bias network requiring known breakdown point.

Use Value: Low thermal resistance (595 °C/W) and stable V_Z over temperature allow reliable reset assertion across −40 °C to +85 °C ambient.

Automotive Body Control Module (BCM) Voltage Clamp

Programmable Logic Controller (PLC) Input Protection

Use Scenario: Clamping transient overvoltage on LIN bus or sensor supply lines in automotive BCMs exposed to load dump or ESD events.

IC Role / Device Role / Timing Role: Transient voltage suppression element placed across protected line and ground, leveraging fast Zener response.

Use Value: 200 mW rating and robust 150 °C junction temperature limit support intermittent surge handling without degradation.

Use Scenario: Protecting digital input channels in industrial PLC modules against accidental 24 V DC miswiring or field-induced surges.

IC Role / Device Role / Timing Role: Precision clamp limiting input voltage to safe level before signal conditioning stage, reducing need for additional TVS stages.

Use Value: Predictable 75 V breakdown with 240 Ω dynamic impedance enables repeatable clamping behavior across production lots.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B75,115 (Nexperia)	Same 75 V ±5%, but SOD-323 package with 400 mW P_D; higher I_ZM capability	Better suited for higher-current regulation; slightly larger Z_ZT (300 Ω typical)	Select when >200 mW dissipation margin or higher I_ZT stability is required
MMBZ5265B (onsemi)	75 V ±5%, but SOT-23 package; 350 mW P_D, 100 Ω Z_ZT @ 20 mA	Lower dynamic impedance at higher test current; larger footprint and different thermal profile	Choose for improved regulation accuracy under heavier load, accepting larger board area

Compared with MM3Z75VC, the BZX384-B75 offers higher power headroom in identical footprint, while MMBZ5265B delivers lower impedance at higher current but requires SOT-23 layout - both serve distinct trade-offs in thermal management, regulation precision, and PCB space constraints.

Availability

MM3Z75VC is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, low-power microcontroller reset circuits, and automotive body control module voltage clamping requiring stable component supply and full traceability.

Supply support for MM3Z75VC 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 part of onsemi's precision Zener diode portfolio designed specifically for compact, high-reliability voltage reference and regulation in space-constrained SMT applications.

FAQ

What is the nominal Zener voltage and tolerance of MM3Z75VC?

The MM3Z75VC has a nominal Zener voltage of 75 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 71.25 V and 78.75 V when tested at I_ZT = 2 mA under pulse conditions. This tolerance is confirmed in the Electrical Characteristics table of the official onsemi datasheet Rev. 3 (August 2023), and applies specifically to the MM3Z75VC variant within the MM3Z2V4C–MM3Z75VC family.

What package type and dimensions does MM3Z75VC use?

MM3Z75VC uses the SOD−323FL package (Case 477AB), measuring 1.7 mm × 1.25 mm with a maximum height of 0.95 mm. It features a cathode band marking and matte tin (Sn) finish. This package is Pb-free and RoHS compliant, and its mechanical outline is documented in onsemi's package drawing 98AON79864E, issued 03 FEB 2023.

What is the maximum power dissipation and thermal resistance of MM3Z75VC?

MM3Z75VC has a maximum power dissipation (P_D) of 200 mW at T_A = 25 °C on a PCB with minimum land pad, and a thermal resistance from junction to ambient (R_JA) of 595 °C/W. These values are specified in the Absolute Maximum Ratings and Thermal Characteristics sections of the onsemi datasheet, and define safe operating limits for continuous DC operation.

How does the reverse leakage current of MM3Z75VC compare to similar Zener diodes?

MM3Z75VC specifies a maximum reverse leakage current (I_R) of 0.045 µA at V_R = 52.5 V, which is among the lowest in its voltage class for SOD−323FL-packaged Zeners. This value is measured per the datasheet's test condition and supports high-impedance biasing in precision analog circuits where leakage would otherwise introduce offset errors.

Is MM3Z75VC suitable for automotive applications?

MM3Z75VC meets AEC-Q200 stress test requirements for passive components and is qualified for automotive body electronics applications such as LIN bus clamping and sensor supply regulation. Its 150 °C maximum junction temperature, Pb-free RoHS compliance, and stable V_Z over temperature make it appropriate for under-hood and cabin modules per onsemi's qualification documentation.

MM3Z75VC 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):: 75 V

Tolerance:: ±5%

Power - Max:: 200 mW

Impedance (Max) (Zzt):: 240 Ohms

Current - Reverse Leakage @ Vr:: 45 nA @ 52.5 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

MM3Z75VC FAQ

1.How can I place an order for MM3Z75VC through Aetrix?

Please submit a Request for Quotation (RFQ) for MM3Z75VC 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 MM3Z75VC reliable?

The price and inventory of MM3Z75VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z75VC is usually 5 days.

3.What payment methods are accepted for MM3Z75VC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z75VC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MM3Z75VC?

MM3Z75VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MM3Z75VC 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 MM3Z75VC?

For technical support, including MM3Z75VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z75VC requirements.

6.How does Aetrix verify that MM3Z75VC is sourced from the original manufacturer or authorized distributors?

All MM3Z75VC 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 MM3Z75VC meets industry standards.

7.What is the process for return or replacement of MM3Z75VC?

All MM3Z75VC units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z75VC, 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 MM3Z75VC part is unused and in its original packaging.

Return procedure for MM3Z75VC:

1.Submit a request within 90 days.

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

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