My Inquiry
My Account
onsemi MMSZ5223ET1G
- Part No.:
- MMSZ5223ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5223ET1G.pdf
- Description:
- DIODE ZENER 2.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,449
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ5223ET1G from onsemi is a 2.7 V ±5% Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 1300 Ω maximum dynamic impedance at 20 mA test current and 0.25 µA leakage current at 75 V reverse bias - used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the MMSZ5223ET1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, SOD-123 terminal mapping, and direct alternatives for voltage regulation design-in.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 2.7 V nominal Zener voltage is specified at 20 mA test current (IZT) with ±5% tolerance and measured at thermal equilibrium (TL = 30 °C ±1 °C).
It exhibits 1300 Ω dynamic impedance at IZT and 1200 Ω at knee current (IZK = 30 mA), supporting stable regulation in low-current feedback paths. The device meets AEC-Q101 requirements when ordered as SZMMSZ5223ET1G and features ESD robustness >16 kV HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.57–2.84 V @ 20 mA - defines regulated output range for reference or clamp applications |
| Power Dissipation (PD) | 500 mW @ TL = 75 °C - sets maximum continuous power handling on standard PCB |
| Zener Impedance (ZZT) | 1300 Ω max @ 20 mA - determines voltage variation under load current changes |
| Leakage Current (IR) | 0.25 µA max @ 75 V - ensures minimal standby current in high-impedance bias networks |
| Thermal Resistance (RJA) | 340 °C/W - quantifies junction-to-ambient temperature rise per watt dissipated |
| ESD Rating | Class 3 (>16 kV HBM) - supports robust handling in automated assembly and end-use environments |
| Package | SOD-123 (1.60 × 2.69 × 1.16 mm) - enables high-density surface-mount placement with cathode band marking |
Pinout & Package
SOD-123 is a 2-lead surface-mount plastic package with void-free thermosetting case, UL 94 V-0 flammability rating, and cathode indicated by a polarity band. Maximum soldering temperature is 260 °C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown anode connection point | Connected to higher potential node in reverse-bias configuration; carries regulated voltage output |
| 2 (Anode) | Zener breakdown cathode connection point | Typically tied to ground or lower-potential rail; completes reverse-bias current path |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW power rating on FR-5 board | Enables use in space-constrained, medium-current regulation without heatsinking |
| ±5% Zener voltage tolerance | Supports predictable clamping thresholds in safety-critical overvoltage detection |
| 1300 Ω dynamic impedance at 20 mA | Minimizes output voltage deviation under moderate load transients |
| ESD rating >16 kV HBM | Reduces risk of field failure during handling or in noisy industrial environments |
| Pb-Free (RoHS-compliant) packaging | Meets global environmental compliance requirements for commercial and automotive production |
Applications
| Low-Power Sensor Biasing | Microcontroller Reset Clamping |
|---|---|
|
Use Scenario: Providing stable 2.7 V reference for analog front-end amplifiers in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Zener voltage reference and current-limiting element in op-amp bias network. Use Value: Maintains signal chain accuracy despite supply voltage droop down to 3.0 V, leveraging tight 2.7 V ±5% tolerance. |
Use Scenario: Clamping reset line voltage to prevent false triggering during brown-out events in ARM Cortex-M0+ systems. IC Role / Device Role / Timing Role: Overvoltage protector and threshold limiter on active-low reset input. Use Value: Limits reset pin voltage to ≤2.84 V while drawing only 0.25 µA leakage at 75 V stress, preserving MCU sleep current budget. |
| USB Port ESD Protection | Industrial Signal Conditioning |
|
Use Scenario: Secondary transient suppression stage after TVS diode on USB 2.0 D+ line. IC Role / Device Role / Timing Role: Precision clamping element to hold line voltage within PHY IC's absolute maximum rating. Use Value: Delivers 2.7 V regulation with 1300 Ω impedance to absorb residual energy without distorting data eye integrity. |
Use Scenario: Setting reference voltage for 4–20 mA loop transmitter DAC output stage in process control modules. IC Role / Device Role / Timing Role: Stable shunt reference for current-sense amplifier offset calibration. Use Value: Ensures <±10 mV drift over −40 to +85 °C due to known TC characteristics and low ZZT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C2V7 | 2.7 V ±5%, 300 mW rating, SOD-323 package, 100 Ω ZZT @ 5 mA | Lower power rating and smaller footprint; optimized for ultra-low-current biasing | Select when board space is constrained and load current remains below 5 mA |
| MMBZ5223BS | 2.7 V ±5%, 350 mW rating, SOT-23 package, 1500 Ω ZZT @ 20 mA | Higher thermal resistance (RJA ≈ 400 °C/W); requires larger copper area for same power | Select when existing SOT-23 layout must be reused and 500 mW operation is not required |
Compared with BZX584C2V7 and MMBZ5223BS, the MMSZ5223ET1G offers superior power handling (500 mW vs. 300/350 mW) and tighter thermal performance (RJA = 340 °C/W) in the SOD-123 form factor, making it preferred for sustained 20 mA regulation tasks in industrial PCBs.
Availability
MMSZ5223ET1G is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage clamping, and sensor biasing applications requiring stable component supply across automotive, industrial control, and consumer electronics programs.
Supply support for MMSZ5223ET1G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMSZ5223ET1G belongs to the MMSZ52xxET1G Zener regulator series designed for general-purpose, medium-current voltage reference and protection in surface-mount systems where reliability, small size, and Pb-free compliance are essential.
FAQ
What is the nominal Zener voltage and tolerance of the MMSZ5223ET1G?
The MMSZ5223ET1G has a nominal Zener voltage of 2.7 V with a standard tolerance of ±5%, resulting in a guaranteed range of 2.57 V to 2.84 V when tested at 20 mA (IZT) and thermal equilibrium at TL = 30 °C ±1 °C. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the onsemi datasheet.
What is the maximum power dissipation of the MMSZ5223ET1G and at what condition is it specified?
The MMSZ5223ET1G is rated for 500 mW total power dissipation on FR-5 board at lead temperature (TL) of 75 °C, with linear derating of 6.7 mW/°C above that temperature. This value is defined in the Maximum Ratings table and assumes the minimum recommended footprint (3.5 × 1.5 inches).
How is the pinout configured for the MMSZ5223ET1G in the SOD-123 package?
The MMSZ5223ET1G uses a 2-pin SOD-123 package with Pin 1 designated as the cathode (marked by a polarity band) and Pin 2 as the anode. In Zener operation, the cathode connects to the higher-potential node and the anode to the lower-potential node or ground - consistent across all MMSZ52xxET1G series devices.
Does the MMSZ5223ET1G meet automotive qualification standards?
The MMSZ5223ET1G itself is not AEC-Q101 qualified; however, the automotive-grade variant SZMMSZ5223ET1G - identical in electrical and mechanical specifications - is AEC-Q101 qualified and PPAP capable. The "SZ" prefix denotes unique site and control change requirements for automotive applications.
What is the Zener impedance of the MMSZ5223ET1G and how does it affect regulation performance?
The MMSZ5223ET1G has a maximum Zener impedance (ZZT) of 1300 Ω at 20 mA test current and 1 kHz AC frequency. This value directly impacts regulation stability: lower ZZT yields smaller output voltage variation under changing load currents, making the MMSZ5223ET1G suitable for applications demanding consistent reference voltage under moderate dynamic loads.
MMSZ5223ET1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- MMSZ52xxxT1G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 75 µA @ 1 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
MMSZ5223ET1G FAQ
1.How can I place an order for MMSZ5223ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5223ET1G 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 MMSZ5223ET1G reliable?
The price and inventory of MMSZ5223ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5223ET1G is usually 5 days.
3.What payment methods are accepted for MMSZ5223ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5223ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5223ET1G?
MMSZ5223ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5223ET1G 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 MMSZ5223ET1G?
For technical support, including MMSZ5223ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5223ET1G requirements.
6.How does Aetrix verify that MMSZ5223ET1G is sourced from the original manufacturer or authorized distributors?
All MMSZ5223ET1G 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 MMSZ5223ET1G meets industry standards.
7.What is the process for return or replacement of MMSZ5223ET1G?
All MMSZ5223ET1G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5223ET1G, 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 MMSZ5223ET1G part is unused and in its original packaging.
Return procedure for MMSZ5223ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ5223ET1G 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…
