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 MM5Z2V4ST1

Name: MM5Z2V4ST1
Brand: onsemi
SKU: MM5Z2V4ST1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MM5Z2V4ST1

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SC-79, SOD-523

Datasheet:: MM5Z2V4ST1.pdf

Description:: DIODE ZENER 2.53V 200MW SOD523

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,590

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

Product details

Overview

MM5Z2V4ST1 from onsemi is a 2.4 V, 200 mW Zener diode in SOD−523 package, designed for precision voltage regulation and overvoltage protection in space-constrained portable electronics. It delivers tight Zener voltage tolerance (2.43–2.63 V @ 5 mA), low dynamic impedance (100 Ω @ IZK = 1 mA), and high ESD robustness (>16 kV HBM), making it ideal for voltage reference and clamping in cellular phone power rails.

For engineers reviewing the MM5Z2V4ST1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 2.4 V nominal Zener voltage, 5 mA test current, 1000 Ω max Zener impedance at IZT, −3.5 mV/°C temperature coefficient, and SOD−523 footprint compatibility with high-density PCB layouts.

Technical Context

The MM5Z2V4ST1 operates as a two-terminal voltage reference device, relying on controlled reverse-biased Zener breakdown to maintain stable output voltage under varying load and temperature conditions. Its design targets low-power, low-current regulation scenarios where forward conduction is avoided and precise clamping near 2.4 V is required.

It features a maximum Zener impedance of 1000 Ω at IZK = 1 mA and 100 Ω at IZT = 5 mA, enabling predictable voltage deviation under transient loads. The device's −3.5 mV/°C temperature coefficient and 450 pF capacitance at 0 V bias further define its behavior in signal-line protection and low-frequency reference applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	2.43–2.63 V @ I_ZT = 5 mA - defines clamping threshold with ±4% tolerance at rated test current
Power Rating P_D	200 mW @ T_A = 25°C - limits continuous dissipation without heatsinking on FR-4 board
Zener Impedance Z_ZT	100 Ω max @ I_ZT = 5 mA - determines voltage shift under small-signal load variations
Temperature Coefficient	−3.5 mV/°C @ I_ZT = 5 mA - quantifies V_Z drift across operating temperature range
ESD Rating	>16 kV per Human Body Model - ensures robustness against handling and system-level ESD events
Capacitance C	450 pF max @ V_R = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent traces

Pinout & Package

SOD−523 surface-mount package: ultra-compact 1.20 mm × 0.80 mm body with 0.7 mm height; void-free thermosetting plastic case, matte tin lead finish, MSL 1 rated, compatible with 260°C reflow.

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	Zener cathode terminal	Connected to higher-potential node; reverse bias applied here to initiate Zener conduction
2 (Anode)	Zener anode terminal	Connected to lower-potential node (typically ground or return path); completes Zener bias loop

Key Features

Feature	Design Value
Tight V_Z tolerance	±4% (2.43–2.63 V) enables accurate voltage clamping without post-production trimming
Pb−Free construction	100% matte Sn lead finish meets RoHS and JEDEC J-STD-020 MSL 1 requirements
Low-profile packaging	0.7 mm max height allows placement beneath connectors or in stacked-board assemblies
High ESD immunity	>16 kV HBM rating reduces need for external ESD protection in handheld interfaces

Applications

Battery Voltage Monitoring	USB Port Overvoltage Protection
Use Scenario: Monitoring Li-ion battery cell voltage during charging/discharging cycles in compact wearables. IC Role / Device Role / Timing Role: Zener reference for ADC input scaling or comparator threshold setting. Use Value: Stable 2.4 V reference enables ±1% battery SOC estimation accuracy despite temperature variation.	Use Scenario: Clamping USB D+ and D− lines against ESD transients and supply rail faults. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor on low-speed data lines. Use Value: 450 pF capacitance and fast Zener turn-on limit signal distortion while absorbing >16 kV HBM spikes.
RF Front-End Bias Reference	Low-Power Microcontroller Reset Circuit
Use Scenario: Providing stable bias voltage to LNA or mixer bias networks in Bluetooth/Wi-Fi modules. IC Role / Device Role / Timing Role: Low-noise DC reference source decoupled from noisy digital supplies. Use Value: −3.5 mV/°C TC and 100 Ω Z_ZT minimize gain drift and maintain RF performance across −40°C to +85°C.	Use Scenario: Generating a clean reset threshold for 3.3 V microcontrollers in energy-harvesting sensors. IC Role / Device Role / Timing Role: Precision voltage detector in conjunction with RC timing network. Use Value: Tight 2.43–2.63 V window ensures reliable reset assertion below brown-out level without false triggers.

Battery Voltage Monitoring

USB Port Overvoltage Protection

Use Scenario: Monitoring Li-ion battery cell voltage during charging/discharging cycles in compact wearables.

IC Role / Device Role / Timing Role: Zener reference for ADC input scaling or comparator threshold setting.

Use Value: Stable 2.4 V reference enables ±1% battery SOC estimation accuracy despite temperature variation.

Use Scenario: Clamping USB D+ and D− lines against ESD transients and supply rail faults.

IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor on low-speed data lines.

Use Value: 450 pF capacitance and fast Zener turn-on limit signal distortion while absorbing >16 kV HBM spikes.

RF Front-End Bias Reference

Low-Power Microcontroller Reset Circuit

Use Scenario: Providing stable bias voltage to LNA or mixer bias networks in Bluetooth/Wi-Fi modules.

IC Role / Device Role / Timing Role: Low-noise DC reference source decoupled from noisy digital supplies.

Use Value: −3.5 mV/°C TC and 100 Ω Z_ZT minimize gain drift and maintain RF performance across −40°C to +85°C.

Use Scenario: Generating a clean reset threshold for 3.3 V microcontrollers in energy-harvesting sensors.

IC Role / Device Role / Timing Role: Precision voltage detector in conjunction with RC timing network.

Use Value: Tight 2.43–2.63 V window ensures reliable reset assertion below brown-out level without false triggers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584C2V4	2.4 V nominal, 250 mW rating, SOD-323 package (1.7 × 1.3 mm), 90 Ω Z_ZT	Larger footprint; higher power but less space-efficient	Choose when board layout allows larger pad area and higher dissipation margin is needed
MMSZ4678	2.4 V nominal, 500 mW rating, SOD-123 package (3.7 × 1.6 mm), 150 Ω Z_ZT	3× larger footprint; higher thermal mass; not suitable for ultra-dense layouts	Select for cost-sensitive industrial designs where SOD-123 is already standardized

Compared with BZX584C2V4 and MMSZ4678, the MM5Z2V4ST1 offers the smallest footprint (SOD−523) and highest density integration for portable devices, though with lower power rating-making it optimal where board area is constrained more than thermal budget.

Availability

MM5Z2V4ST1 is available at Aetrix Electronics and suitable for cellular phones, handheld portables, and high-density PC boards requiring stable component supply and consistent Pb−Free compliance.

Supply support for MM5Z2V4ST1 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MM5Z2V4ST1 belongs to the MM5ZxxxST1 series of miniature Zener regulators, engineered specifically for voltage reference and overvoltage protection in space-limited portable electronics.

FAQ

What is the nominal Zener voltage and tolerance of the MM5Z2V4ST1?

The MM5Z2V4ST1 has a nominal Zener voltage of 2.4 V with a guaranteed range of 2.43 V to 2.63 V at I_ZT = 5 mA, corresponding to ±4% tolerance. This tight specification supports accurate voltage clamping in precision analog circuits and ensures consistent performance across production lots without calibration.

What is the maximum power dissipation and derating behavior of the MM5Z2V4ST1?

The MM5Z2V4ST1 is rated for 200 mW total device dissipation at T_A = 25°C, derating linearly by 1.5 mW/°C above that temperature. Its thermal resistance R_JA is 635°C/W on FR-4 board, meaning junction temperature rises ~127°C at full rated power-so operation above 25°C requires careful thermal design or reduced bias current.

Does the MM5Z2V4ST1 have Pb−Free and RoHS compliance?

Yes, the MM5Z2V4ST1 is a Pb−Free device with 100% matte tin lead finish, compliant with RoHS Directive 2011/65/EU and qualified to MSL 1 per JEDEC J-STD-020. The "T1" suffix and absence of "G" in the part number confirm standard Pb−Free packaging per onsemi's manufacturing specification.

What is the Zener impedance profile of the MM5Z2V4ST1 at different test currents?

The MM5Z2V4ST1 exhibits Z_ZK ≤ 1000 Ω at I_ZK = 1.0 mA and Z_ZT ≤ 100 Ω at I_ZT = 5.0 mA. This steep impedance drop confirms strong Zener knee characteristics, enabling stable regulation under light-to-moderate load conditions typical in reference and protection circuits.

How is the MM5Z2V4ST1 marked and identified on the physical package?

The MM5Z2V4ST1 is marked with "T2" on the top surface of the SOD−523 case, indicating its specific Zener voltage variant within the MM5ZxxxST1 series. The marking appears adjacent to a microdot cathode indicator, with orientation varying by manufacturing location-but always with Pin 1 (cathode) identified by the dot or marking position per onsemi's CASE 502 outline drawing.

MM5Z2V4ST1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 2.53 V

Tolerance:: ±4%

Power - Max:: 200 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 120 µA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-523

MM5Z2V4ST1 FAQ

1.How can I place an order for MM5Z2V4ST1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MM5Z2V4ST1 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 MM5Z2V4ST1 reliable?

The price and inventory of MM5Z2V4ST1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z2V4ST1 is usually 5 days.

3.What payment methods are accepted for MM5Z2V4ST1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z2V4ST1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MM5Z2V4ST1?

MM5Z2V4ST1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MM5Z2V4ST1 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 MM5Z2V4ST1?

For technical support, including MM5Z2V4ST1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z2V4ST1 requirements.

6.How does Aetrix verify that MM5Z2V4ST1 is sourced from the original manufacturer or authorized distributors?

All MM5Z2V4ST1 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 MM5Z2V4ST1 meets industry standards.

7.What is the process for return or replacement of MM5Z2V4ST1?

All MM5Z2V4ST1 units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z2V4ST1, 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 MM5Z2V4ST1 part is unused and in its original packaging.

Return procedure for MM5Z2V4ST1:

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…