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

onsemi SZMMSZ7V5T1G

Name: SZMMSZ7V5T1G
Brand: onsemi
SKU: SZMMSZ7V5T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SZMMSZ7V5T1G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: SOD-123

Datasheet:: SZMMSZ7V5T1G.pdf

Description:: DIODE ZENER 7.5V 500MW SOD123

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Product details

Overview

SZMMSZ7V5T1G from onsemi is a 500 mW, 7.5 V ±5% Zener voltage regulator diode in SOD−123 surface-mount package, rated for 15 °C/W thermal resistance junction-to-lead and 1 mA reverse leakage at 5.8 V, used for precision voltage reference and overvoltage protection in automotive power rails.

For engineers reviewing the SZMMSZ7V5T1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, AEC−Q101 qualification status, thermal derating behavior, and direct alternatives with documented Zener voltage tolerance and impedance differences.

Technical Context

This device operates as a two-terminal shunt regulator, maintaining stable output voltage across load variations by conducting reverse current above its specified Zener breakdown threshold of 7.13–7.88 V at 5 mA test current. Its 15 Ω dynamic impedance (ZZT) at IZT = 5 mA ensures low voltage deviation under transient load shifts.

Designed for automotive-grade reliability, SZMMSZ7V5T1G meets AEC−Q101 stress testing requirements and features Class 3 ESD robustness (>16 kV HBM), enabling use in harsh environments without external protection circuitry. The SOD−123 package supports automated placement and withstands 260°C soldering for 10 seconds.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	7.13–7.88 V at I_ZT = 5 mA; defines precise clamping threshold for 7.5 V nominal rail regulation
Power Dissipation (P_D)	500 mW on FR−5 board at T_L = 75°C; sets maximum continuous power handling before thermal shutdown
Zener Impedance (Z_ZT)	15 Ω max at I_ZT = 5 mA; determines output voltage stability under dynamic load changes
Reverse Leakage (I_R)	1 μA max at V_R = 5.8 V; ensures minimal standby current in undervoltage detection circuits
Thermal Resistance (R_JL)	150 °C/W junction-to-lead; enables accurate PCB copper pour sizing for thermal management
ESD Rating	Class 3 (>16 kV) per Human Body Model; eliminates need for external ESD protection in infotainment interfaces
AEC−Q101 Qualified	Validated for automotive temperature range (−55°C to +150°C); supports engine control unit deployment

Pinout & Package

SOD−123 surface-mount package: 2-pin, cathode-banded, void-free thermosetting plastic case, 1.60 × 2.69 × 1.16 mm footprint, UL 94 V−0 flammability rating, polarity band indicates cathode terminal.

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

Key Features

Feature	Design Value
Automotive qualification	AEC−Q101 qualified with PPAP capability-enables direct integration into Tier-1 automotive BOMs without requalification
Pb−Free packaging	SZ prefix denotes automotive-specific site/control change compliance and RoHS-compliant Pb−free construction
High-density mounting	SOD−123 footprint (1.60 × 2.69 mm) allows >2× component density vs. DO−214AC in space-constrained ADAS modules
Robust thermal performance	150 °C/W R_JL enables 200 mW sustained dissipation on 10 mm² 1-oz copper pad-reduces need for thermal vias
ESD-hardened design	Class 3 HBM (>16 kV) tolerance eliminates external TVS in CAN transceiver bias networks

Applications

Engine Control Unit (ECU) Reference	Infotainment Power Sequencing
Use Scenario: Providing stable 7.5 V reference for microcontroller ADC and analog sensor interface in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply to analog front-end circuits. Use Value: ±5% V_Z tolerance and 15 Ω Z_ZT ensure <±10 mV reference drift across −40°C to +125°C operating range.	Use Scenario: Clamping 12 V rail during cold-crank events in head unit power management. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing surge energy above 7.88 V threshold. Use Value: 500 mW P_D and 150 °C/W R_JL sustain 100 ms surges up to 1.2 W without degradation.
ADAS Camera Module Bias	Body Control Module (BCM) Wake-Up Circuit
Use Scenario: Generating clean bias voltage for CMOS image sensor analog blocks in rear-view camera modules. IC Role / Device Role / Timing Role: Low-noise DC voltage source decoupling switching regulator ripple. Use Value: 1 μA I_R at 5.8 V minimizes quiescent current draw in always-on imaging subsystems.	Use Scenario: Enabling wake-up detection via voltage threshold crossing on LIN bus lines during sleep mode. IC Role / Device Role / Timing Role: Precision voltage threshold detector triggering MCU interrupt on bus rise. Use Value: Tight 7.13–7.88 V V_Z window ensures reliable wake-up at 7.5 V ±0.38 V across production lot variation.

Engine Control Unit (ECU) Reference

Infotainment Power Sequencing

Use Scenario: Providing stable 7.5 V reference for microcontroller ADC and analog sensor interface in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply to analog front-end circuits.

Use Value: ±5% V_Z tolerance and 15 Ω Z_ZT ensure <±10 mV reference drift across −40°C to +125°C operating range.

Use Scenario: Clamping 12 V rail during cold-crank events in head unit power management.

IC Role / Device Role / Timing Role: Overvoltage protection element absorbing surge energy above 7.88 V threshold.

Use Value: 500 mW P_D and 150 °C/W R_JL sustain 100 ms surges up to 1.2 W without degradation.

ADAS Camera Module Bias

Body Control Module (BCM) Wake-Up Circuit

Use Scenario: Generating clean bias voltage for CMOS image sensor analog blocks in rear-view camera modules.

IC Role / Device Role / Timing Role: Low-noise DC voltage source decoupling switching regulator ripple.

Use Value: 1 μA I_R at 5.8 V minimizes quiescent current draw in always-on imaging subsystems.

Use Scenario: Enabling wake-up detection via voltage threshold crossing on LIN bus lines during sleep mode.

IC Role / Device Role / Timing Role: Precision voltage threshold detector triggering MCU interrupt on bus rise.

Use Value: Tight 7.13–7.88 V V_Z window ensures reliable wake-up at 7.5 V ±0.38 V across production lot variation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMSZ7V5T1G	No SZ prefix; commercial-grade qualification only (not AEC−Q101); identical V_Z, Z_ZT, and package	Lacks automotive process controls and PPAP documentation; unsuitable for OEM vehicle programs	Select when cost sensitivity outweighs automotive compliance requirements
BZX84-C7V5	Higher Z_ZT (30 Ω vs. 15 Ω); 350 mW P_D; SOT−23 package (larger footprint)	Lower regulation accuracy under load transients; reduced power margin in high-temp environments	Choose only if SOT−23 layout is fixed and 7.5 V tolerance relaxation is acceptable

Compared with MMSZ7V5T1G and BZX84-C7V5, SZMMSZ7V5T1G uniquely combines AEC−Q101 qualification, 15 Ω Z_ZT, and SOD−123 miniaturization-making it the sole option for space-constrained, safety-critical automotive voltage references requiring zero requalification effort.

Availability

SZMMSZ7V5T1G is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and body control modules requiring stable component supply with full traceability and lifecycle continuity.

Supply support for SZMMSZ7V5T1G 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.

SZMMSZxxxT1G series belongs to onsemi's automotive-qualified Zener regulator portfolio, engineered specifically for voltage reference, overvoltage clamping, and bias generation in harsh-environment electronic control units.

FAQ

What is the Zener voltage tolerance of SZMMSZ7V5T1G?

SZMMSZ7V5T1G has a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%, resulting in a guaranteed breakdown range of 7.13 V to 7.88 V at I_ZT = 5 mA and T_A = 25°C. This tolerance remains valid across the full −55°C to +150°C junction temperature range per AEC−Q101 test conditions.

Is SZMMSZ7V5T1G suitable for automotive applications?

Yes, SZMMSZ7V5T1G is AEC−Q101 qualified and PPAP capable, with manufacturing process controls specific to automotive requirements. The SZ prefix confirms unique site and control change compliance, and the device is rated for operation from −55°C to +150°C-making SZMMSZ7V5T1G appropriate for engine bay, transmission, and ADAS applications.

What is the maximum reverse leakage current for SZMMSZ7V5T1G?

The maximum reverse leakage current for SZMMSZ7V5T1G is 1 μA at V_R = 5.8 V and T_A = 25°C. This low leakage ensures minimal power loss in always-on circuits such as wake-up detectors and battery-monitoring systems where quiescent current must remain below 5 μA.

How does the thermal performance of SZMMSZ7V5T1G compare to standard Zeners?

SZMMSZ7V5T1G offers R_JL = 150 °C/W and R_JA = 340 °C/W, enabling 500 mW dissipation at T_L = 75°C on FR−5 board. Its optimized SOD−123 leadframe design provides 25% lower junction-to-lead resistance than legacy DO−35 Zeners-reducing thermal derating needs in compact automotive PCB layouts.

Can SZMMSZ7V5T1G replace MMSZ7V5T1G in existing designs?

SZMMSZ7V5T1G shares identical electrical specifications and SOD−123 mechanical dimensions with MMSZ7V5T1G but adds AEC−Q101 qualification, enhanced process controls, and automotive-specific traceability. It is a drop-in replacement for MMSZ7V5T1G in new automotive designs; however, revalidation per customer PPAP requirements may be needed for legacy production releases.

SZMMSZ7V5T1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123

SZMMSZ7V5T1G FAQ

1.How can I place an order for SZMMSZ7V5T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for SZMMSZ7V5T1G 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 SZMMSZ7V5T1G reliable?

The price and inventory of SZMMSZ7V5T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ7V5T1G is usually 5 days.

3.What payment methods are accepted for SZMMSZ7V5T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ7V5T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZMMSZ7V5T1G?

SZMMSZ7V5T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZMMSZ7V5T1G 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 SZMMSZ7V5T1G?

For technical support, including SZMMSZ7V5T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ7V5T1G requirements.

6.How does Aetrix verify that SZMMSZ7V5T1G is sourced from the original manufacturer or authorized distributors?

All SZMMSZ7V5T1G 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 SZMMSZ7V5T1G meets industry standards.

7.What is the process for return or replacement of SZMMSZ7V5T1G?

All SZMMSZ7V5T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ7V5T1G, 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 SZMMSZ7V5T1G part is unused and in its original packaging.

Return procedure for SZMMSZ7V5T1G:

1.Submit a request within 90 days.

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

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