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

onsemi SZMM5Z7V5T5G

Name: SZMM5Z7V5T5G
Brand: onsemi
SKU: SZMM5Z7V5T5G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SZMM5Z7V5T5G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SC-79, SOD-523

Datasheet:: SZMM5Z7V5T5G.pdf

Description:: DIODE ZENER 7.5V 500MW SOD523

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Product details

Overview

SZMM5Z7V5T5G from onsemi is a 7.5 V ±5% Zener voltage regulator diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 15 Ω max Zener impedance at 5 mA test current and 1 µA reverse leakage at 5 V, used for precision voltage reference and overvoltage protection in space-constrained portable electronics.

For engineers reviewing the SZMM5Z7V5T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (250 °C/W), ESD rating (>16 kV HBM), AEC-Q101 qualification, and SOD-523 footprint compatibility with high-density PCB layouts.

Technical Context

This device operates as a two-terminal voltage reference, conducting in reverse breakdown to clamp voltage across load circuits. Its 7.5 V nominal Zener voltage is specified at 5 mA test current (IZT), with temperature coefficient of +2.5 mV/°C and maximum capacitance of 140 pF at 0 V and 1 MHz.

The SOD-523 package enables surface-mount integration with 1.20 mm × 0.80 mm body outline and 0.7 mm height, supporting reflow up to 260 °C and meeting MSL 1 requirements. It features 100% matte tin lead finish and UL 94 V-0 compliant epoxy molding compound.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	7.0 V min / 7.5 V nom / 7.9 V max at I_ZT = 5 mA - defines regulated output voltage range under standard test conditions
Power Dissipation (P_D)	500 mW at T_A = 25 °C - sets maximum continuous power handling on FR-4 board before thermal derating applies
Zener Impedance (Z_ZT)	15 Ω max at I_ZT = 5 mA - determines voltage regulation stability under dynamic load changes
Reverse Leakage (I_R)	1 µA max at V_R = 5 V - ensures minimal standby current in voltage-clamp configurations
ESD Rating	Class 3 (>16 kV) per HBM - provides robust electrostatic discharge immunity in handheld assembly and end-use environments
Temperature Coefficient	+2.5 mV/°C - quantifies Zener voltage drift with ambient temperature change, critical for stable reference accuracy
Capacitance	140 pF max at V_R = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits

Pinout & Package

SOD-523 ultra-small surface-mount package with 1.20 mm × 0.80 mm footprint and 0.7 mm profile; void-free thermosetting plastic case, UL 94 V-0 rated, matte tin leads, MSL 1, 260 °C reflow compatible.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to higher-potential node in reverse-bias configuration; polarity band identifies cathode for correct PCB orientation
2	Anode	Connected to lower-potential node (typically ground or return path); completes reverse-bias conduction path during Zener operation

Key Features

Feature	Design Value
AEC-Q101 Qualified	Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC specification
Pb-Free & RoHS Compliant	Meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow standards without lead-based solder alternatives
High ESD Robustness	Withstands >16 kV human-body-model discharge without parameter shift or functional failure-critical for unshielded portable interfaces
Low Profile Mounting	0.7 mm height enables stacking under shields or placement beneath connectors in ultra-thin mobile PCBs
Stable Low-Current Regulation	Maintains 7.5 V regulation down to 1 mA test current (IZK), supporting low-power sensor bias and standby-mode references

Applications

Smartphone Power Rail Clamping	USB-C Port Overvoltage Protection
Use Scenario: Clamping transient surges on 5 V USB power lines during hot-plug events or ESD strikes in compact smartphone designs. IC Role / Device Role / Timing Role: Two-terminal shunt regulator placed between VBUS and GND to clamp voltage above 7.5 V while diverting surge current. Use Value: Prevents damage to downstream USB controller ICs by limiting peak voltage to ≤7.9 V with <1 µA leakage at 5 V operating point.	Use Scenario: Protecting USB-C receptacle circuitry from accidental 12 V or 20 V adapter misconnection in dual-role devices. IC Role / Device Role / Timing Role: Standby-mode Zener reference that triggers external crowbar circuit when input exceeds 7.5 V threshold. Use Value: Enables fast-response overvoltage detection with 140 pF capacitance minimizing signal distortion on high-speed CC line routing.
Automotive Body Control Module Reference	Wearable Sensor Bias Supply
Use Scenario: Providing stable 7.5 V reference for analog front-end comparators monitoring battery voltage in AEC-Q101-compliant BCMs. IC Role / Device Role / Timing Role: Precision voltage reference source with +2.5 mV/°C tempco, used to scale ADC input ranges across −40 °C to +125 °C. Use Value: Delivers ±5% voltage accuracy over full automotive temperature range without external trimming components.	Use Scenario: Generating low-noise bias voltage for MEMS accelerometer signal conditioning in hearable devices with <3 mm PCB height budget. IC Role / Device Role / Timing Role: Compact shunt regulator supplying clean 7.5 V to op-amp rails in ultra-low-power sensor subsystems. Use Value: Achieves 0.7 mm profile and 1.20 mm × 0.80 mm footprint-enabling placement directly adjacent to sensor die without layer stackup penalty.

Smartphone Power Rail Clamping

USB-C Port Overvoltage Protection

Use Scenario: Clamping transient surges on 5 V USB power lines during hot-plug events or ESD strikes in compact smartphone designs.

IC Role / Device Role / Timing Role: Two-terminal shunt regulator placed between VBUS and GND to clamp voltage above 7.5 V while diverting surge current.

Use Value: Prevents damage to downstream USB controller ICs by limiting peak voltage to ≤7.9 V with <1 µA leakage at 5 V operating point.

Use Scenario: Protecting USB-C receptacle circuitry from accidental 12 V or 20 V adapter misconnection in dual-role devices.

IC Role / Device Role / Timing Role: Standby-mode Zener reference that triggers external crowbar circuit when input exceeds 7.5 V threshold.

Use Value: Enables fast-response overvoltage detection with 140 pF capacitance minimizing signal distortion on high-speed CC line routing.

Automotive Body Control Module Reference

Wearable Sensor Bias Supply

Use Scenario: Providing stable 7.5 V reference for analog front-end comparators monitoring battery voltage in AEC-Q101-compliant BCMs.

IC Role / Device Role / Timing Role: Precision voltage reference source with +2.5 mV/°C tempco, used to scale ADC input ranges across −40 °C to +125 °C.

Use Value: Delivers ±5% voltage accuracy over full automotive temperature range without external trimming components.

Use Scenario: Generating low-noise bias voltage for MEMS accelerometer signal conditioning in hearable devices with <3 mm PCB height budget.

IC Role / Device Role / Timing Role: Compact shunt regulator supplying clean 7.5 V to op-amp rails in ultra-low-power sensor subsystems.

Use Value: Achieves 0.7 mm profile and 1.20 mm × 0.80 mm footprint-enabling placement directly adjacent to sensor die without layer stackup penalty.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584C7V5	7.5 V ±5%, SOD-523, 300 mW P_D, 30 Ω Z_ZT - lower power rating and higher impedance than SZMM5Z7V5T5G	Not AEC-Q101 qualified; suitable only for commercial-grade consumer products, not automotive systems	Select BZX584C7V5 only if thermal budget allows 300 mW operation and automotive qualification is unnecessary
MMSZ5236BT1G	7.5 V ±5%, SOD-123, 500 mW P_D, 15 Ω Z_ZT - identical electrical specs but larger 2.9 mm × 1.3 mm package	Requires PCB layout revision due to 3.6× larger footprint; incompatible with ultra-dense portable layouts	Choose MMSZ5236BT1G only when SOD-523 assembly capability is unavailable or board-level rework tolerance is required

Compared with BZX584C7V5 and MMSZ5236BT1G, SZMM5Z7V5T5G uniquely combines AEC-Q101 qualification, 500 mW power handling, and SOD-523 miniaturization-making it the sole option for automotive or space-constrained high-reliability applications requiring all three attributes.

Availability

SZMM5Z7V5T5G is available at Aetrix Electronics and suitable for smartphone power rail clamping, USB-C port overvoltage protection, and automotive body control module reference applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SZMM5Z7V5T5G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

SZMM5Z7V5T5G belongs to the MM5ZxxxT1G/SZMM5ZxxxT1G Zener regulator series designed specifically for high-density portable electronics and AEC-Q101-compliant automotive subsystems where miniaturization and reliability are co-primary constraints.

FAQ

What is the Zener voltage tolerance of SZMM5Z7V5T5G?

The SZMM5Z7V5T5G has a Zener voltage tolerance of ±5%, with a nominal value of 7.5 V and guaranteed range of 7.0 V to 7.9 V at 5 mA test current (IZT). This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet, under the Standard Tolerance Series section for device marking "0G".

Is SZMM5Z7V5T5G qualified for automotive applications?

Yes, SZMM5Z7V5T5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section. The "SZ" prefix denotes compliance with automotive-specific site and control change requirements, distinguishing it from commercial-grade MM5Z variants.

What is the maximum Zener impedance for SZMM5Z7V5T5G?

The maximum Zener impedance (ZZT) for SZMM5Z7V5T5G is 15 Ω, measured at the 5 mA Zener test current (IZT) and 25 °C ambient temperature. This value is listed in the Electrical Characteristics table on page 3 of the onsemi datasheet for device marking "0G".

Does SZMM5Z7V5T5G have RoHS and Pb-Free compliance?

Yes, SZMM5Z7V5T5G is Pb-Free and RoHS compliant, as confirmed in the datasheet's Specification Features section and reinforced by the "G" suffix in its part number. The lead finish is 100% matte tin, and the epoxy meets UL 94 V-0 flammability standards.

What is the reverse leakage current specification for SZMM5Z7V5T5G?

The reverse leakage current (IR) for SZMM5Z7V5T5G is 1 µA maximum at VR = 5 V and TA = 25 °C, per the Electrical Characteristics table on page 3 of the onsemi datasheet. This low leakage supports efficient voltage clamping in battery-powered standby circuits.

SZMM5Z7V5T5G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

Tolerance:: ±6%

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:: -65°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-523

SZMM5Z7V5T5G FAQ

1.How can I place an order for SZMM5Z7V5T5G through Aetrix?

Please submit a Request for Quotation (RFQ) for SZMM5Z7V5T5G 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 SZMM5Z7V5T5G reliable?

The price and inventory of SZMM5Z7V5T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z7V5T5G is usually 5 days.

3.What payment methods are accepted for SZMM5Z7V5T5G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z7V5T5G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZMM5Z7V5T5G?

SZMM5Z7V5T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZMM5Z7V5T5G 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 SZMM5Z7V5T5G?

For technical support, including SZMM5Z7V5T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z7V5T5G requirements.

6.How does Aetrix verify that SZMM5Z7V5T5G is sourced from the original manufacturer or authorized distributors?

All SZMM5Z7V5T5G 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 SZMM5Z7V5T5G meets industry standards.

7.What is the process for return or replacement of SZMM5Z7V5T5G?

All SZMM5Z7V5T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z7V5T5G, 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 SZMM5Z7V5T5G part is unused and in its original packaging.

Return procedure for SZMM5Z7V5T5G:

1.Submit a request within 90 days.

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

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