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onsemi MMSZ5232ET1G
- Part No.:
- MMSZ5232ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ5232ET1G.pdf
- Description:
- DIODE ZENER 5.6V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,664
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Product details
Overview
MMSZ5232ET1G from onsemi is a 5.6 V ±5% Zener diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 11 Ω dynamic impedance at 20 mA test current and 0.25 μA leakage current at 3 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power analog and digital supply rails.
For engineers reviewing the MMSZ5232ET1G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance, thermal derating behavior, junction-to-lead thermal resistance (150 °C/W), ESD robustness (Class 3, >16 kV HBM), and SOD-123 footprint compatibility with automated placement.
Technical Context
This device operates in reverse breakdown to maintain stable voltage regulation across varying load currents from 1 mA to 20 mA. Its Zener impedance of 11 Ω at IZT = 20 mA and 1600 Ω at IZK = 0.25 mA defines regulation fidelity under light and full-load conditions.
Designed for surface-mount assembly on FR-4/FR-5 PCBs, it features a cathode-band polarity indicator, UL 94 V-0 flammability rating, and Pb-free construction compliant with RoHS. Junction temperature range spans −55 °C to +150 °C, supporting industrial and automotive ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.32–5.88 V at IZT = 20 mA; ensures ±5% regulation accuracy for 5.6 V nominal reference |
| Zener Impedance (ZZT) | 11 Ω max at IZT = 20 mA; determines output voltage deviation under load transients |
| Power Dissipation (PD) | 500 mW at TL = 75 °C; defines maximum continuous DC power on standard FR-5 board |
| Leakage Current (IR) | 0.25 μA max at VR = 3 V; guarantees minimal standby current in high-impedance bias networks |
| Thermal Resistance (RJL) | 150 °C/W junction-to-lead; enables accurate thermal modeling for PCB copper pour design |
| ESD Rating (HBM) | Class 3 (>16 kV); supports handling and assembly without external protection in non-critical zones |
| Peak Surge Power | 225 W for 8 × 20 μs pulse; provides transient overvoltage clamping capability |
Pinout & Package
SOD-123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish, cathode indicated by band.
| 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 circuit ground or lower-potential rail; completes conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW power rating on FR-5 board | Enables use in space-constrained, medium-current regulation without heatsinking |
| ESD robustness >16 kV HBM | Reduces need for external ESD protection in front-end bias and sensing circuits |
| Small SOD-123 footprint | Supports high-density PCB layouts in portable and modular electronics |
| −55 °C to +150 °C operating range | Validates suitability for under-hood automotive and industrial control environments |
| Pb-free and RoHS-compliant | Meets global environmental compliance requirements for commercial and automotive production |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 5.6 V reference for ADC voltage dividers and op-amp biasing in battery-powered sensors. IC Role / Device Role / Timing Role: Voltage reference diode establishing precise DC offset and scaling point. Use Value: ±5% VZ tolerance and 11 Ω ZZT ensure <±10 mV drift over 0–20 mA load range. | Use Scenario: Clamping microcontroller I/O pins against ESD or inductive kickback in motor driver feedback paths. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting input voltage to safe logic levels. Use Value: 225 W peak surge rating and Class 3 HBM withstand capability protect downstream CMOS inputs. |
| Low-Power Bias Network | Temperature-Stable Reference |
Use Scenario: Generating bias current for JFET amplifiers and current mirrors in analog front-ends. IC Role / Device Role / Timing Role: Precision current source element via series resistor + Zener configuration. Use Value: 0.25 μA leakage at 3 V ensures <1% error in sub-100 μA bias networks. | Use Scenario: Stabilizing oscillator bias in crystal clock generators where VCC varies with temperature. IC Role / Device Role / Timing Role: Temperature-compensated voltage reference compensating for IC supply drift. Use Value: Specified TC data for adjacent devices confirms predictable drift behavior near 5.6 V nominal point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V6 | 5.6 V ±5%, 300 mW rating, SOD-323 package, 20 Ω ZZT | Lower power and higher impedance limit use in >10 mA loads or precision references | Select when board area is critical and thermal budget allows reduced dissipation |
| MMBZ5232BS | 5.6 V ±5%, 350 mW rating, SOT-23 package, 15 Ω ZZT, dual-anode configuration | Requires different layout; dual-diode topology suits differential or redundant clamp designs | Choose for designs needing dual Zener elements or existing SOT-23 footprint reuse |
Compared with BZX584C5V6 and MMBZ5232BS, the MMSZ5232ET1G delivers higher power headroom (500 mW), lower dynamic impedance (11 Ω), and superior thermal performance (RJL = 150 °C/W) - making it preferred for single-device, medium-current regulation where stability and surge resilience are prioritized.
Availability
MMSZ5232ET1G is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and low-power bias network applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for MMSZ5232ET1G 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 targets general-purpose, medium-current Zener regulation in compact surface-mount designs - optimized for cost-sensitive, high-volume applications where reliability, thermal performance, and automated assembly compatibility are essential.
FAQ
What is the nominal Zener voltage and tolerance of the MMSZ5232ET1G?
The MMSZ5232ET1G has a nominal Zener voltage of 5.6 V with a standard tolerance of ±5%, corresponding to a guaranteed range of 5.32 V to 5.88 V at 20 mA test current (IZT). This tolerance is specified per onsemi's datasheet revision 10 and applies under thermal equilibrium conditions at lead temperature TL = 30 °C ±1 °C. The MMSZ5232ET1G maintains this specification across its qualified operating temperature range.
What is the maximum power dissipation for MMSZ5232ET1G on a standard PCB?
The MMSZ5232ET1G 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. This rating assumes use of the minimum recommended footprint (3.5 × 1.5 inches). On FR-4 boards, the same 500 mW rating applies, but actual thermal performance depends on copper area and layer stack-up. The MMSZ5232ET1G must not exceed this limit to ensure reliable long-term operation.
Does MMSZ5232ET1G have ESD protection, and what level is certified?
Yes, the MMSZ5232ET1G is rated for ESD robustness per the Human Body Model (HBM) at Class 3, meaning it withstands discharges exceeding 16 kV. This rating is verified per JEDEC JS-001 and is intrinsic to the device structure - no external protection is required for handling or assembly in typical manufacturing environments. The MMSZ5232ET1G leverages this feature in I/O protection and bias networks where transient immunity is critical.
What is the Zener impedance of MMSZ5232ET1G, and why does it matter?
The MMSZ5232ET1G exhibits a maximum dynamic Zener impedance (ZZT) of 11 Ω at IZT = 20 mA, and up to 1600 Ω at knee current IZK = 0.25 mA. Low ZZT ensures minimal output voltage variation under changing load current - critical for stable reference generation. The MMSZ5232ET1G's 11 Ω value directly supports tight regulation in analog signal chains and precision power monitoring circuits.
Is MMSZ5232ET1G suitable for automotive applications?
The SZ-prefix variant (SZMMSZ5232ET1G) is AEC-Q101 qualified and PPAP capable for automotive use, while the standard MMSZ5232ET1G is not specifically qualified. However, the MMSZ5232ET1G shares identical electrical and thermal specifications, construction, and reliability testing - making it suitable for non-safety-critical automotive subsystems (e.g., infotainment power rails, body control modules) where full qualification is not mandated. Always verify system-level compliance requirements before deployment.
MMSZ5232ET1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- MMSZ52xxxT1G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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
MMSZ5232ET1G FAQ
1.How can I place an order for MMSZ5232ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5232ET1G 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 MMSZ5232ET1G reliable?
The price and inventory of MMSZ5232ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5232ET1G is usually 5 days.
3.What payment methods are accepted for MMSZ5232ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5232ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5232ET1G?
MMSZ5232ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5232ET1G 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 MMSZ5232ET1G?
For technical support, including MMSZ5232ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5232ET1G requirements.
6.How does Aetrix verify that MMSZ5232ET1G is sourced from the original manufacturer or authorized distributors?
All MMSZ5232ET1G 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 MMSZ5232ET1G meets industry standards.
7.What is the process for return or replacement of MMSZ5232ET1G?
All MMSZ5232ET1G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5232ET1G, 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 MMSZ5232ET1G part is unused and in its original packaging.
Return procedure for MMSZ5232ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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