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

onsemi MMSZ5236ET1G

Name: MMSZ5236ET1G
Brand: onsemi
SKU: MMSZ5236ET1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MMSZ5236ET1G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SOD-123

Datasheet:: MMSZ5236ET1G.pdf

Description:: DIODE ZENER 7.5V 500MW SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:8,958

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Product details

Overview

MMSZ5236ET1G from onsemi is a 7.5 V ±5% Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 6 Ω dynamic impedance at 20 mA test current and 0.25 µA leakage current at 6 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power analog and digital supply rails.

For engineers reviewing the MMSZ5236ET1G datasheet, pinout, applications, or equivalent options, this device is selected for stable 7.5 V regulation in space-constrained PCBs where ESD robustness (>16 kV HBM), thermal reliability (−55 to +150 °C junction range), and Pb-free compliance are required.

Technical Context

This Zener diode operates in reverse breakdown mode with tightly controlled nominal voltage of 7.5 V (min 7.13 V, max 7.88 V) at 20 mA test current (IZT). Its low dynamic impedance (6 Ω at IZT) ensures minimal voltage deviation under load transients.

Thermal design is supported by a junction-to-lead thermal resistance of 150 °C/W and a maximum case temperature rating of 260 °C for 10 seconds during soldering. The device meets AEC-Q101 requirements when ordered with SZ prefix, though MMSZ5236ET1G itself is standard industrial grade.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	7.13–7.88 V at 20 mA - defines stable regulation window for 7.5 V nominal rail
Power Dissipation (P_D)	500 mW at T_L = 75 °C - sets maximum continuous DC power on FR-5 board
Zener Impedance (Z_ZT)	6 Ω at I_ZT = 20 mA - ensures <15 mV output shift per 90 mA load change
Leakage Current (I_R)	0.25 µA at V_R = 6 V - guarantees negligible standby current in undervoltage detection
ESD Rating	Class 3 (>16 kV HBM) - enables direct placement on exposed I/O lines without added protection
Junction Temp Range	−55 to +150 °C - supports operation in automotive under-hood and industrial control environments

Pinout & Package

SOD-123 surface-mount package: 1.60 × 2.69 × 1.16 mm body, cathode indicated by band, void-free thermosetting plastic case rated UL 94 V-0.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to regulated voltage node; reverse-biased terminal during Zener operation
2 (Non-banded End)	Anode	Connected to ground or lower-potential reference; completes conduction path during breakdown

Key Features

Feature	Design Value
500 mW Power Rating	Enables use in medium-current bias networks without external heat sinking on standard FR-5 PCB
Low Dynamic Impedance	6 Ω at 20 mA ensures tight voltage regulation across varying load currents in feedback loops
Pb-Free & RoHS Compliant	Meets global environmental directives without compromising solderability or thermal cycling reliability
High ESD Robustness	Class 3 HBM (>16 kV) allows integration into unshielded sensor interfaces and front-end protection circuits

Applications

Power Supply Monitoring	Reference Voltage Source
Use Scenario: Detecting brown-out conditions in microcontroller reset circuits using resistor-divider + Zener clamping. IC Role / Device Role / Timing Role: Voltage threshold detector providing precise 7.5 V trip point for POR/RESET logic. Use Value: Tight ±5% tolerance and low leakage ensure reliable reset assertion across temperature without calibration.	Use Scenario: Generating stable 7.5 V reference for ADC biasing or op-amp feedback networks in data acquisition modules. IC Role / Device Role / Timing Role: Passive voltage reference establishing known potential for analog signal conditioning. Use Value: 6 Ω Z_ZT minimizes reference drift under varying load, improving measurement repeatability.
Overvoltage Clamp	Signal Level Translation
Use Scenario: Protecting 8-bit MCU GPIO pins from transient surges on 5 V I/O lines interfacing with industrial sensors. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage to ≤7.88 V during ESD or inductive kick events. Use Value: 225 W peak surge rating (8 × 20 µs) absorbs short transients without failure or parameter shift.	Use Scenario: Translating 3.3 V logic signals to 7.5 V compatible levels for legacy industrial bus receivers. IC Role / Device Role / Timing Role: Bidirectional level shifter using forward conduction (0.95 V) and reverse Zener action. Use Value: Low forward voltage and sharp knee enable clean high-speed transitions without added active components.

Power Supply Monitoring

Reference Voltage Source

Use Scenario: Detecting brown-out conditions in microcontroller reset circuits using resistor-divider + Zener clamping.

IC Role / Device Role / Timing Role: Voltage threshold detector providing precise 7.5 V trip point for POR/RESET logic.

Use Value: Tight ±5% tolerance and low leakage ensure reliable reset assertion across temperature without calibration.

Use Scenario: Generating stable 7.5 V reference for ADC biasing or op-amp feedback networks in data acquisition modules.

IC Role / Device Role / Timing Role: Passive voltage reference establishing known potential for analog signal conditioning.

Use Value: 6 Ω Z_ZT minimizes reference drift under varying load, improving measurement repeatability.

Overvoltage Clamp

Signal Level Translation

Use Scenario: Protecting 8-bit MCU GPIO pins from transient surges on 5 V I/O lines interfacing with industrial sensors.

IC Role / Device Role / Timing Role: Shunt clamp limiting voltage to ≤7.88 V during ESD or inductive kick events.

Use Value: 225 W peak surge rating (8 × 20 µs) absorbs short transients without failure or parameter shift.

Use Scenario: Translating 3.3 V logic signals to 7.5 V compatible levels for legacy industrial bus receivers.

IC Role / Device Role / Timing Role: Bidirectional level shifter using forward conduction (0.95 V) and reverse Zener action.

Use Value: Low forward voltage and sharp knee enable clean high-speed transitions without added active components.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584-C7V5	7.5 V ±5%, 300 mW rating, SOD-323 package (smaller footprint, higher thermal resistance)	Lower power handling limits use in >10 mA bias networks; preferred only where board area is critical	Select BZX584-C7V5 only if layout constraints prohibit SOD-123 and power demand stays below 300 mW.
MMBZ5236ELT1G	Identical electrical specs but in SOT-23 package (3-pin, anode/cathode/anode); requires different layout and has higher parasitic capacitance	SOT-23 variant suits designs already using that footprint; not drop-in due to pin count and polarity marking differences	Choose MMBZ5236ELT1G only when consolidating SOT-23 assembly lines-no PCB redesign possible for MMSZ5236ET1G replacement.

Compared with BZX584-C7V5 and MMBZ5236ELT1G, the MMSZ5236ET1G offers superior thermal performance (500 mW vs. 300 mW) and standardized SOD-123 placement, making it optimal for general-purpose 7.5 V regulation where reliability and ease of assembly are prioritized over minimal footprint.

Availability

MMSZ5236ET1G is available at Aetrix Electronics and suitable for power supply monitoring, reference voltage generation, overvoltage clamping, and signal level translation requiring stable component supply and full traceability.

Supply support for MMSZ5236ET1G 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 specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.

The MMSZ52xxET1G series was designed for general-purpose, medium-current voltage regulation in compact surface-mount layouts, targeting cost-sensitive yet reliability-critical consumer and industrial systems.

FAQ

What is the Zener voltage tolerance for MMSZ5236ET1G?

The MMSZ5236ET1G has a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%, resulting in a guaranteed range of 7.13 V to 7.88 V at 20 mA test current and 30 °C lead temperature. This tolerance is measured under thermal equilibrium conditions and applies across the full operating temperature range.

Can MMSZ5236ET1G be used in automotive applications?

The MMSZ5236ET1G is qualified for industrial use; for automotive-grade applications, the SZMMSZ5236ET1G variant must be selected, which carries AEC-Q101 qualification and PPAP capability. The standard MMSZ5236ET1G lacks the required site-specific process controls and stress testing for automotive deployment.

What is the maximum allowable soldering temperature for MMSZ5236ET1G?

The MMSZ5236ET1G supports a maximum case temperature of 260 °C for 10 seconds during reflow soldering. This limit is defined for the SOD-123 package and aligns with IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for Pb-free assembly processes.

How does the dynamic impedance of MMSZ5236ET1G affect regulation accuracy?

The MMSZ5236ET1G exhibits 6 Ω dynamic impedance at 20 mA, meaning a 10 mA change in Zener current causes approximately 60 mV variation in output voltage. This low Z_ZT value ensures stable regulation in feedback paths and reference networks where load-induced voltage shifts must remain under 100 mV.

Is MMSZ5236ET1G RoHS compliant and halogen-free?

Yes, the MMSZ5236ET1G is Pb-free and RoHS compliant per EU Directive 2011/65/EU. The "G" suffix denotes compliance, and the device uses halogen-free molding compound meeting IEC 61249-2-21 standards, verified through onsemi's material declarations and third-party testing reports.

MMSZ5236ET1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: MMSZ52xxxT1G

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 7.5 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 6 Ohms

Current - Reverse Leakage @ Vr:: 3 µA @ 6 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

MMSZ5236ET1G FAQ

1.How can I place an order for MMSZ5236ET1G through Aetrix?

Please submit a Request for Quotation (RFQ) for MMSZ5236ET1G 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 MMSZ5236ET1G reliable?

The price and inventory of MMSZ5236ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5236ET1G is usually 5 days.

3.What payment methods are accepted for MMSZ5236ET1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5236ET1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MMSZ5236ET1G?

MMSZ5236ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MMSZ5236ET1G 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 MMSZ5236ET1G?

For technical support, including MMSZ5236ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5236ET1G requirements.

6.How does Aetrix verify that MMSZ5236ET1G is sourced from the original manufacturer or authorized distributors?

All MMSZ5236ET1G 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 MMSZ5236ET1G meets industry standards.

7.What is the process for return or replacement of MMSZ5236ET1G?

All MMSZ5236ET1G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5236ET1G, 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 MMSZ5236ET1G part is unused and in its original packaging.

Return procedure for MMSZ5236ET1G:

1.Submit a request within 90 days.

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

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