My Inquiry
My Account
onsemi MMSZ7V5ET1
- Part No.:
- MMSZ7V5ET1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ7V5ET1.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,107
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ7V5ET1 from onsemi is a 7.5 V ±5% Zener voltage regulator diode in SOD-123 surface-mount package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 15 Ω dynamic impedance at 5 mA test current and 1 µA reverse leakage at 5.6 V, used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the MMSZ7V5ET1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, cathode/anode terminal mapping, AEC-Q101 qualification status, and direct automotive-grade alternatives - all confirmed from onsemi's official Rev. 8 datasheet (Feb. 2026).
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable 7.5 V output across load variations by conducting reverse current above its Zener breakdown threshold. It exhibits 15 Ω Zener impedance at IZT = 5 mA and temperature coefficient near 0 mV/°C in the 6–8 V range, enabling low-drift reference performance.
Rated for 225 W nonrepetitive surge (8 × 20 µs), it supports transient suppression in DC rails. Its SOD-123 package delivers 150 °C/W junction-to-lead thermal resistance and ESD robustness >16 kV HBM - critical for automated assembly and harsh-environment deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.13 V min / 7.5 V nominal / 7.88 V max at IZT = 5 mA - defines regulation band under standard test conditions |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 5 mA - determines output voltage stability under varying load current |
| Reverse Leakage (IR) | 1 µA max at VR = 5.6 V - ensures minimal quiescent current in standby mode |
| Power Dissipation (PD) | 500 mW at TL = 75 °C on FR-5 board - sets maximum continuous operating power before thermal derating |
| Peak Surge Power | 225 W for 8 × 20 µs pulse - enables transient overvoltage clamping without failure |
| Thermal Resistance (RJL) | 150 °C/W junction-to-lead - informs PCB copper area requirements for thermal management |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - guarantees robustness during handling and automated placement |
Pinout & Package
SOD-123 plastic surface-mount package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish, cathode indicated by polarity band, lead-free (Pb-free) construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener conduction occurs |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control units and body electronics |
| 500 mW Power Rating | Enables use in mid-power voltage references without external heat sinking on standard FR-5 PCB |
| ±5% Zener Tolerance | Supports tight regulation in feedback networks for switching regulators and LDOs |
| Low 15 Ω Dynamic Impedance | Minimizes output voltage variation under dynamic load changes in precision analog circuits |
| 16 kV HBM ESD Robustness | Eliminates need for additional ESD protection in board-level assembly and field operation |
Applications
| Switching Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage of a flyback converter via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Shunt reference element setting precise 7.5 V threshold for TL431 or similar error amplifier input. Use Value: Maintains ±1% output accuracy over temperature due to low TC and stable Zener impedance. |
Use Scenario: Protecting microcontroller I/O pins from 12 V rail transients in automotive body control modules. IC Role / Device Role / Timing Role: Fast-acting clamp limiting voltage to ≤8 V during load dump events. Use Value: Absorbs 225 W surge energy without degradation, preserving downstream logic integrity. |
| Industrial Sensor Reference | LED Current Regulation |
Use Scenario: Providing stable bias voltage for bridge sensor signal conditioning in factory automation transmitters. IC Role / Device Role / Timing Role: Low-noise voltage reference for instrumentation amplifier offset trimming. Use Value: Delivers <1 µV/°C drift in 6–8 V range, improving long-term measurement repeatability. |
Use Scenario: Setting constant current for indicator LEDs in medical device front panels. IC Role / Device Role / Timing Role: Series-shunt regulator establishing fixed voltage drop across current-setting resistor. Use Value: Ensures LED brightness stability across 40–85 °C ambient with <0.5% current variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V nominal, but 350 mW rating and 30 Ω ZZT; SOT-23 package | Limited to lower-power applications; less suitable for sustained 500 mW loads or high-surge environments | Select when footprint constraints favor SOT-23 and peak power demands stay below 350 mW |
| SZMMSZ7V5ET1G | Identical electrical specs and SOD-123 package; AEC-Q101 qualified with SZ prefix for automotive traceability | Designed for PPAP-compliant automotive production with enhanced change control and lot traceability | Prefer for Tier 1 automotive programs requiring full AS9100-aligned documentation and process validation |
Compared with BZX84-C7V5 and SZMMSZ7V5ET1G, the MMSZ7V5ET1 offers optimal balance of industrial-grade reliability, 500 mW capability, and cost-effective SOD-123 assembly - making it ideal for non-automotive embedded power rails where AEC-Q101 is not mandated but robust surge handling is required.
Availability
MMSZ7V5ET1 is available at Aetrix Electronics and suitable for switching power supplies, industrial sensor interfaces, and LED driver circuits requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for MMSZ7V5ET1 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with focus on performance, reliability, and sustainability.
The MMSZxxxET1G series targets cost-sensitive, high-volume surface-mount Zener regulation needs - optimized for automated assembly, thermal efficiency, and AEC-Q101 compliance in power management subsystems.
FAQ
What is the Zener voltage tolerance for MMSZ7V5ET1?
The MMSZ7V5ET1 has a nominal Zener voltage of 7.5 V with a standard tolerance of ±5%, meaning the actual measured VZ falls between 7.13 V and 7.88 V at IZT = 5 mA and TA = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the onsemi datasheet Rev. 8.
Is MMSZ7V5ET1 suitable for automotive applications?
MMSZ7V5ET1 itself is not AEC-Q101 qualified; however, its automotive-grade variant SZMMSZ7V5ET1G is fully qualified and PPAP capable. The MMSZ7V5ET1 shares identical electrical and thermal specs but lacks the enhanced traceability and change control required for automotive production - use MMSZ7V5ET1 for industrial or consumer designs where AEC-Q101 is not mandated.
What is the maximum reverse leakage current for MMSZ7V5ET1?
The maximum reverse leakage current for MMSZ7V5ET1 is 1 µA at VR = 5.6 V and TA = 25 °C, as specified in the Electrical Characteristics table. This low leakage ensures minimal power loss in high-impedance reference nodes and improves battery life in always-on circuits.
Can MMSZ7V5ET1 handle transient surges?
Yes, MMSZ7V5ET1 is rated for 225 W nonrepetitive surge power with an 8 × 20 µs waveform, validated per Figure 4 in the datasheet. This capability allows it to safely clamp short-duration overvoltages in DC power rails without degradation, provided surge repetition remains infrequent.
What is the thermal resistance of MMSZ7V5ET1?
MMSZ7V5ET1 has a junction-to-lead thermal resistance (RJL) of 150 °C/W and junction-to-ambient (RJA) of 340 °C/W, measured via infrared scan method. These values inform PCB layout decisions - e.g., ≥25 mm² of 1 oz copper pour under the SOD-123 pad reduces thermal rise by ~30 °C at full 500 mW dissipation.
MMSZ7V5ET1 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
MMSZ7V5ET1 FAQ
1.How can I place an order for MMSZ7V5ET1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ7V5ET1 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 MMSZ7V5ET1 reliable?
The price and inventory of MMSZ7V5ET1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ7V5ET1 is usually 5 days.
3.What payment methods are accepted for MMSZ7V5ET1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ7V5ET1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ7V5ET1?
MMSZ7V5ET1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ7V5ET1 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 MMSZ7V5ET1?
For technical support, including MMSZ7V5ET1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ7V5ET1 requirements.
6.How does Aetrix verify that MMSZ7V5ET1 is sourced from the original manufacturer or authorized distributors?
All MMSZ7V5ET1 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 MMSZ7V5ET1 meets industry standards.
7.What is the process for return or replacement of MMSZ7V5ET1?
All MMSZ7V5ET1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ7V5ET1, 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 MMSZ7V5ET1 part is unused and in its original packaging.
Return procedure for MMSZ7V5ET1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ7V5ET1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
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, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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.
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.
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…
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…
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…
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 …
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…
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…
