My Inquiry
My Account
onsemi MMSZ5234ET1
- Part No.:
- MMSZ5234ET1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5234ET1.pdf
- Description:
- DIODE ZENER 6.2V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,865
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ5234ET1 from onsemi is a 6.2 V ±5% Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 7 Ω dynamic impedance at 20 mA test current and 0.25 µA leakage at 4 V reverse bias-used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the MMSZ5234ET1 datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance, thermal derating behavior, junction-to-lead thermal resistance, ESD robustness (Class 3 HBM), and SOD-123 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal silicon Zener regulator, maintaining stable reverse breakdown voltage across its cathode-anode terminals under controlled current conditions. It exhibits a typical temperature coefficient near 0 mV/°C for the 6.2 V variant, enabling minimal drift over −55 °C to +150 °C operating range.
Designed for surface-mount assembly on FR-4 or FR-5 substrates, it delivers 225 W nonrepetitive surge capability (8 × 20 µs pulse) and supports automated pick-and-place handling. Its Pb-free SOD-123 package meets UL 94 V-0 flammability rating and withstands 260 °C for 10 seconds during reflow soldering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.89 V (min) to 6.51 V (max) at 20 mA - defines regulated output voltage window under nominal bias |
| Power Dissipation (PD) | 500 mW at TL = 75 °C - sets maximum continuous DC power on standard FR-5 board |
| Zener Impedance (ZZT) | 7 Ω max at IZT = 20 mA - determines regulation stiffness and AC ripple rejection |
| Leakage Current (IR) | 0.25 µA max at VR = 4 V - ensures minimal standby current in undervoltage clamp mode |
| Thermal Resistance (RJL) | 150 °C/W - enables accurate junction temperature estimation from lead temperature in layout |
| ESD Rating (HBM) | Class 3 (>16 kV) - provides robustness against handling-induced electrostatic discharge |
Pinout & Package
SOD-123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish; polarity indicated by cathode band; lead-free compliant; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal during Zener operation |
| 2 (Unbanded End) | Anode | Connected to circuit ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating on FR-5 Board | Enables use in space-constrained, medium-current voltage reference designs without forced cooling |
| ±5% Zener Voltage Tolerance | Supports cost-sensitive applications where tight regulation is balanced against BOM simplicity |
| Class 3 ESD Robustness (>16 kV HBM) | Reduces need for external ESD protection in handheld or exposed interface circuits |
| 225 W Nonrepetitive Surge Capability | Provides transient overvoltage clamping for short-duration spikes without failure |
| SOD-123 Footprint Compatibility | Facilitates high-density routing and automated assembly in consumer and industrial PCBs |
Applications
| Reference Voltage Source | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 6.2 V bias for op-amp comparators and ADC reference inputs in battery-powered sensors. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing precise DC potential independent of supply variation. Use Value: Delivers <6.5 mV total error across temperature due to low TC and tight 5% tolerance, reducing calibration overhead. | Use Scenario: Protecting microcontroller I/O pins from ESD and transient surges in USB-peripheral interfaces. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess energy to ground before voltage exceeds safe logic threshold. Use Value: Activates at ≤6.51 V and sustains 225 W surge for 20 µs, preventing latch-up or gate oxide damage. |
| Current-Limited Bias Generator | Low-Power Supply Monitor |
Use Scenario: Generating fixed bias for JFET amplifiers in audio front-end stages with minimal quiescent current. IC Role / Device Role / Timing Role: Series-resistor–Zener network delivering regulated voltage while limiting fault current. Use Value: Maintains 6.2 V output with <7 Ω dynamic impedance, ensuring stable gain-setting node under load variation. | Use Scenario: Detecting brown-out conditions in 3.3 V MCU systems using resistor-divider + comparator input. IC Role / Device Role / Timing Role: Precision threshold element defining trip point for reset or warning logic activation. Use Value: Achieves ±0.31 V trip accuracy (5% of 6.2 V) with sub-µA leakage, minimizing false triggers during sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C6V2 | 6.2 V ±5%, 300 mW rating, SOD-323 package, 10 Ω ZZT | Lower power handling and higher dynamic impedance limit use in higher-current regulation | Select when board space is more constrained than power margin and thermal management is simplified |
| MM3Z6V2T1G | 6.2 V ±5%, 200 mW rating, SOD-323 package, 15 Ω ZZT, 0.5 µA IR | Reduced surge capability and higher leakage reduce reliability in harsh environments | Choose for ultra-low-cost consumer applications where 500 mW headroom and Class 3 ESD are not required |
Compared with BZX584-C6V2 and MM3Z6V2T1G, the MMSZ5234ET1 offers superior thermal performance (500 mW vs ≤300 mW), lower dynamic impedance (7 Ω vs ≥10 Ω), and higher ESD immunity-making it preferred for industrial-grade voltage references requiring long-term stability and surge resilience.
Availability
MMSZ5234ET1 is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, low-power bias generation, and supply monitoring applications requiring stable component supply and full traceability.
Supply support for MMSZ5234ET1 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.
The MMSZ52xxET1G series is part of onsemi's general-purpose Zener diode portfolio, engineered for reliable voltage regulation and transient suppression in cost-sensitive, high-volume surface-mount designs.
FAQ
What is the nominal Zener voltage of the MMSZ5234ET1?
The MMSZ5234ET1 has a nominal Zener voltage of 6.2 V, with a guaranteed range of 5.89 V to 6.51 V at 20 mA test current and 25 °C ambient temperature. This value is measured under thermal equilibrium at lead temperature of 30 °C ±1 °C and reflects the device's primary regulation point in circuit design.
Does the MMSZ5234ET1 meet automotive qualification standards?
The MMSZ5234ET1 is not AEC-Q101 qualified; however, the SZMMSZ5234ET1G variant-identical in electrical and thermal specs-is specifically qualified for automotive use and PPAP capable. For industrial or consumer applications, the MMSZ5234ET1 remains fully suitable with Class 3 HBM ESD rating and −55 °C to +150 °C operating range.
What is the maximum power dissipation of the MMSZ5234ET1 on a standard PCB?
The MMSZ5234ET1 is rated for 500 mW total power dissipation on an FR-5 board at a lead temperature (TL) of 75 °C, derating linearly at 6.7 mW/°C above that temperature. Its junction-to-lead thermal resistance of 150 °C/W allows accurate thermal modeling when mounted per recommended footprint.
How does the MMSZ5234ET1 perform under transient surge conditions?
The MMSZ5234ET1 supports up to 225 W of nonrepetitive peak surge power for an 8 × 20 µs rectangular waveform at TA = 25 °C. This capability enables effective clamping of fast transients such as ESD or inductive kickback without degradation, provided pulse repetition is avoided.
Is the MMSZ5234ET1 RoHS-compliant and lead-free?
Yes, the MMSZ5234ET1 is Pb-free and RoHS-compliant, as confirmed by its "G" suffix and explicit labeling in onsemi's ordering information. The package uses lead-free terminations and complies with JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard reflow profiles.
MMSZ5234ET1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 4 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
MMSZ5234ET1 FAQ
1.How can I place an order for MMSZ5234ET1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5234ET1 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 MMSZ5234ET1 reliable?
The price and inventory of MMSZ5234ET1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5234ET1 is usually 5 days.
3.What payment methods are accepted for MMSZ5234ET1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5234ET1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5234ET1?
MMSZ5234ET1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5234ET1 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 MMSZ5234ET1?
For technical support, including MMSZ5234ET1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5234ET1 requirements.
6.How does Aetrix verify that MMSZ5234ET1 is sourced from the original manufacturer or authorized distributors?
All MMSZ5234ET1 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 MMSZ5234ET1 meets industry standards.
7.What is the process for return or replacement of MMSZ5234ET1?
All MMSZ5234ET1 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5234ET1, 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 MMSZ5234ET1 part is unused and in its original packaging.
Return procedure for MMSZ5234ET1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ5234ET1 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…
