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

onsemi MMSZ7V5T1

Name: MMSZ7V5T1
Brand: onsemi
SKU: MMSZ7V5T1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MMSZ7V5T1

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SOD-123

Datasheet:: MMSZ7V5T1.pdf

Description:: DIODE ZENER 7.5V 500MW SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:6,852

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Product details

Overview

MMSZ7V5T1G from onsemi is a 500 mW, 7.5 V ±5% Zener voltage regulator diode in SOD−123 surface-mount package, rated for 15 Ω dynamic impedance at 5 mA, 1 μA reverse leakage at 5.8 V, and −55°C to +150°C junction temperature range; used for precision voltage reference and overvoltage protection in power supply feedback loops.

For engineers reviewing the MMSZ7V5T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, AEC−Q101 qualification status, and direct alternatives with documented parameter differences for automotive and industrial board-level design.

Technical Context

This device operates as a two-terminal silicon Zener diode optimized for stable reverse-bias regulation at nominal 7.5 V with ±5% tolerance. It exhibits low dynamic impedance (15 Ω @ I_ZT = 5 mA) and tight leakage control (1 μA @ V_R = 5.8 V), enabling accurate clamping in low-power analog and digital supply rails.

Thermal performance is defined by R_JA = 340°C/W and R_JL = 150°C/W, with full power dissipation (500 mW) guaranteed only up to 75°C lead temperature-derating linearly at 6.7 mW/°C above that point per FR−5 board conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	7.13–7.88 V at I_ZT = 5 mA; ensures ±5% regulation tolerance across production lot and temperature.
Dynamic Impedance (Z_ZT)	15 Ω max at I_ZT = 5 mA; maintains stable output voltage under small-signal load transients.
Reverse Leakage (I_R)	1 μA max at V_R = 5.8 V; minimizes standby current in battery-powered voltage monitor circuits.
Power Dissipation (P_D)	500 mW on FR−5 board @ T_L = 75°C; defines maximum continuous DC power handling before thermal shutdown risk.
Junction Temp Range (T_J)	−55°C to +150°C; supports operation in under-hood automotive and industrial ambient environments.
ESD Rating	Class 3 (>16 kV HBM); withstands handling and assembly without external protection circuitry.

Pinout & Package

SOD−123 plastic surface-mount package: 1.60 mm × 2.69 mm × 1.16 mm body, cathode indicated by band, Pb−Free (RoHS-compliant), UL 94 V−0 flammability rating.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to regulated voltage node; reverse-biased during Zener operation; carries full Zener current.
2 (Non-banded End)	Anode	Connected to ground or lower-potential rail; completes bias path for regulation and clamping functions.

Key Features

Feature	Design Value
AEC−Q101 Qualified	Validated for automotive electronics use including engine control modules and body electronics requiring reliability certification.
500 mW Power Rating	Enables robust voltage clamping in 3.3 V/5 V/12 V supply rails without external heat sinking on standard PCBs.
16 kV HBM ESD Robustness	Eliminates need for discrete ESD protection in front-end voltage reference paths of sensor interfaces and ADC references.
±5% Zener Tolerance	Supports tight-tolerance feedback networks in isolated DC−DC converters and LDO monitor circuits.

Applications

Automotive Body Control Module	Industrial PLC Analog Input Protection
Use Scenario: Clamping transient spikes on 5 V sensor supply lines in door module ECUs exposed to load-dump events. IC Role / Device Role / Timing Role: Zener diode providing bidirectional overvoltage protection at the power entry point. Use Value: Limits voltage to ≤7.88 V during 100 ms surges, preventing damage to downstream MCU I/O and analog front-ends.	Use Scenario: Stabilizing reference voltage for 16-bit ADC inputs measuring 4–20 mA loop signals. IC Role / Device Role / Timing Role: Precision shunt reference establishing stable 7.5 V bias for op-amp gain stages. Use Value: Delivers <15 Ω dynamic impedance to maintain reference accuracy within ±0.02% over temperature and line variation.
USB-C Power Delivery Monitor	Medical Patient Monitor Sensor Bias
Use Scenario: Overvoltage detection in USB-C CC line monitoring circuitry where V_CONN may reach 5 V. IC Role / Device Role / Timing Role: Fast-response clamp protecting level-shifter ICs from accidental 12 V misconnection. Use Value: Activates at 7.13 V with <100 ns response, limiting fault energy before damage occurs.	Use Scenario: Providing isolated bias voltage for photodiode amplifiers in pulse oximetry front-ends. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) Zener reference ensuring minimal current injection into high-impedance sensor nodes. Use Value: Maintains signal integrity by contributing <0.1% error to 10 GΩ input impedance measurement paths.

Automotive Body Control Module

Industrial PLC Analog Input Protection

Use Scenario: Clamping transient spikes on 5 V sensor supply lines in door module ECUs exposed to load-dump events.

IC Role / Device Role / Timing Role: Zener diode providing bidirectional overvoltage protection at the power entry point.

Use Value: Limits voltage to ≤7.88 V during 100 ms surges, preventing damage to downstream MCU I/O and analog front-ends.

Use Scenario: Stabilizing reference voltage for 16-bit ADC inputs measuring 4–20 mA loop signals.

IC Role / Device Role / Timing Role: Precision shunt reference establishing stable 7.5 V bias for op-amp gain stages.

Use Value: Delivers <15 Ω dynamic impedance to maintain reference accuracy within ±0.02% over temperature and line variation.

USB-C Power Delivery Monitor

Medical Patient Monitor Sensor Bias

Use Scenario: Overvoltage detection in USB-C CC line monitoring circuitry where V_CONN may reach 5 V.

IC Role / Device Role / Timing Role: Fast-response clamp protecting level-shifter ICs from accidental 12 V misconnection.

Use Value: Activates at 7.13 V with <100 ns response, limiting fault energy before damage occurs.

Use Scenario: Providing isolated bias voltage for photodiode amplifiers in pulse oximetry front-ends.

IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) Zener reference ensuring minimal current injection into high-impedance sensor nodes.

Use Value: Maintains signal integrity by contributing <0.1% error to 10 GΩ input impedance measurement paths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584C7V5	Same 7.5 V nominal, ±5% tolerance, but 300 mW rating and SOD-323 package (smaller footprint, higher thermal resistance).	Lower power handling limits use in >10 mA continuous clamp applications; unsuitable for AEC−Q101 automotive systems.	Select when board space is constrained and thermal load remains below 300 mW.
1N4734A	Through-hole DO-41 package, same 7.5 V/1 W rating, but no AEC−Q101 qualification and 20 Ω Z_ZT.	Requires wave soldering; not suitable for automated SMT lines or automotive PPAP programs.	Select for legacy through-hole designs or prototyping where reflow compatibility is unnecessary.

Compared with BZX584C7V5 and 1N4734A, MMSZ7V5T1G uniquely combines SMT compatibility, AEC−Q101 qualification, 500 mW power, and 15 Ω Z_ZT-making it optimal for high-reliability, space-constrained automotive and industrial voltage reference designs.

Availability

MMSZ7V5T1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC analog input protection, and medical sensor bias circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MMSZ7V5T1G 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, high-performance silicon solutions for automotive, industrial, cloud, and consumer markets.

MMSZ7V5T1G belongs to the MMSZxxxT1G Zener regulator series designed specifically for compact, high-density surface-mount voltage reference and overvoltage protection in automotive and industrial control systems.

FAQ

What is the Zener voltage tolerance of MMSZ7V5T1G?

MMSZ7V5T1G has a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%, meaning its actual regulation range is 7.13 V to 7.88 V when tested at I_ZT = 5 mA and T_A = 25°C. This tolerance is maintained across the full operating temperature range and is certified per onsemi's production test standards.

Is MMSZ7V5T1G qualified for automotive applications?

Yes, MMSZ7V5T1G is AEC−Q101 qualified and PPAP capable. It meets stress testing requirements for temperature cycling, humidity, mechanical shock, and ESD (Class 3, >16 kV HBM), making it suitable for use in automotive body control modules, infotainment power supplies, and ADAS sensor interfaces.

What is the maximum reverse leakage current for MMSZ7V5T1G?

The maximum reverse leakage current for MMSZ7V5T1G is 1 μA at V_R = 5.8 V and T_A = 25°C. This low leakage supports precision biasing in high-impedance analog circuits such as photodiode amplifiers and reference dividers where current injection must be minimized.

Can MMSZ7V5T1G replace MMSZ7V5T1 in a design?

Yes, MMSZ7V5T1G is the Pb−Free (RoHS-compliant) version of MMSZ7V5T1 and is functionally identical in all electrical and thermal specifications. The "G" suffix denotes green packaging; no layout or schematic changes are required when upgrading from MMSZ7V5T1 to MMSZ7V5T1G.

What is the thermal resistance of MMSZ7V5T1G on an FR−5 board?

MMSZ7V5T1G has a junction-to-ambient thermal resistance (R_JA) of 340°C/W and junction-to-lead resistance (R_JL) of 150°C/W when mounted on FR−5 board per onsemi's test methodology. Full 500 mW power dissipation is only valid up to 75°C lead temperature, with linear derating beyond that point.

MMSZ7V5T1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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):: 15 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 5 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

MMSZ7V5T1 FAQ

1.How can I place an order for MMSZ7V5T1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MMSZ7V5T1 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 MMSZ7V5T1 reliable?

The price and inventory of MMSZ7V5T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ7V5T1 is usually 5 days.

3.What payment methods are accepted for MMSZ7V5T1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ7V5T1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MMSZ7V5T1?

MMSZ7V5T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MMSZ7V5T1 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 MMSZ7V5T1?

For technical support, including MMSZ7V5T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ7V5T1 requirements.

6.How does Aetrix verify that MMSZ7V5T1 is sourced from the original manufacturer or authorized distributors?

All MMSZ7V5T1 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 MMSZ7V5T1 meets industry standards.

7.What is the process for return or replacement of MMSZ7V5T1?

All MMSZ7V5T1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ7V5T1, 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 MMSZ7V5T1 part is unused and in its original packaging.

Return procedure for MMSZ7V5T1:

1.Submit a request within 90 days.

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

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