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onsemi MM5Z4V3T1
- Part No.:
- MM5Z4V3T1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z4V3T1.pdf
- Description:
- DIODE ZENER 4.3V 100MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,633
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Product details
Overview
MM5Z4V3T1 from onsemi is a 4.3 V, 100 mW Zener diode in SOD−523 package, designed for precision voltage regulation and overvoltage protection in space-constrained circuits. It delivers ±5% nominal Zener voltage tolerance (4.0–4.6 V), 90 Ω maximum Zener impedance at 5 mA test current, and 3 µA reverse leakage at 1.0 V, enabling stable reference generation in portable power rails.
For engineers reviewing the MM5Z4V3T1 datasheet, pinout, applications, or equivalent options, key selection criteria include its 4.3 V breakdown voltage, 100 mW power rating, SOD−523 footprint compatibility, ESD robustness (>16 kV HBM), and low-profile 0.7 mm height for high-density PCBs.
Technical Context
This Zener regulator operates in reverse-bias breakdown mode with a nominal 4.3 V regulation point at IZT = 5 mA. Its temperature coefficient of −3.5 mV/°C ensures predictable drift across −65°C to +150°C junction range, supporting stable references in thermally varying environments.
The device features low dynamic impedance (90 Ω max at 5 mA) and minimal capacitance (450 pF at 0 V, 1 MHz), making it suitable for noise-sensitive analog supply clamping and low-current biasing applications where fast transient response and minimal signal coupling are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.0–4.6 V @ 5 mA - defines precise clamping threshold for 3.3 V or 5 V rail protection |
| Power Rating (PD) | 100 mW @ 25°C - limits continuous dissipation in compact SOD−523 package without heatsinking |
| Zener Impedance (ZZT) | 90 Ω max @ 5 mA - ensures tight regulation under small-signal load variations |
| Reverse Leakage (IR) | 3 µA @ 1.0 V - minimizes standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling during automated assembly and field operation |
| Package Dimensions | 1.20 × 0.80 × 0.70 mm - enables placement in ultra-dense layouts such as smartphone PMIC sections |
Pinout & Package
SOD−523 surface-mount plastic package (Case 502), void-free epoxy meeting UL 94 V−0, with 100% matte tin lead finish and MSL 1 reflow rating (260°C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point | Connected to regulated voltage node; polarity critical for correct breakdown operation |
| 2 (Anode) | Zener cathode connection point | Typically tied to ground or lower-potential rail; reverse-biased configuration required |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD−523 package | 0.7 mm height enables stacking under shields and routing in <0.5 mm pitch areas |
| High ESD immunity | >16 kV HBM eliminates need for external TVS in many handheld ESD zones |
| Tight voltage tolerance | ±5% (4.0–4.6 V) supports accurate 3.3 V rail monitoring without trimming resistors |
| Stable temperature coefficient | −3.5 mV/°C allows predictable drift compensation in thermal-aware designs |
Applications
| Smartphone Power Management | IoT Sensor Bias Reference |
|---|---|
|
Use Scenario: Clamping LDO output during load dump or hot-swap events in cellular phone PMIC modules. IC Role / Device Role / Timing Role: Zener voltage regulator providing overvoltage protection for 3.3 V system rail. Use Value: Prevents damage to baseband ICs by limiting transient excursions to ≤4.6 V with 100 mW dissipation margin. |
Use Scenario: Generating stable bias voltage for MEMS accelerometer analog front-end in battery-powered wearables. IC Role / Device Role / Timing Role: Low-leakage (3 µA) Zener reference supplying precision DC offset. Use Value: Enables sub-µA sleep current while maintaining 4.3 V reference accuracy across −20°C to +70°C ambient. |
| USB-C Port Protection | Industrial PLC Input Conditioning |
|
Use Scenario: Protecting USB-C CC line receivers from ESD-induced overvoltage during plug insertion. IC Role / Device Role / Timing Role: Fast-response Zener clamp absorbing 15 kV HBM transients per IEC 61000-4-2. Use Value: Survives >16 kV HBM without degradation, eliminating need for secondary TVS in cost-sensitive designs. |
Use Scenario: Level-shifting and clamping 24 V digital inputs to 5 V logic thresholds in factory automation controllers. IC Role / Device Role / Timing Role: Zener-based input protection network limiting voltage to safe MCU GPIO range. Use Value: Provides repeatable 4.3 V clamp with 90 Ω impedance, ensuring clean edge detection despite supply ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C4V3 | Same 4.3 V nominal Zener, but SOD-323 package (1.7 × 1.3 mm); 200 mW rating; higher leakage (5 µA @ 1 V) | Larger footprint and higher power allow higher surge handling, but incompatible with SOD−523 land pattern | Select when board layout permits larger package and higher transient energy absorption is needed |
| MMSZ4V3T1 | Identical electrical specs (4.0–4.6 V, 90 Ω ZZT, 3 µA IR), same SOD−523 package, but different marking (MMSZ prefix) and RoHS compliance documentation | Drop-in replacement with identical mechanical and electrical behavior; validated for same automotive AEC-Q200 stress tests | Preferred for new designs requiring full AEC-Q200 qualification evidence and extended temperature validation |
Compared with BZX584-C4V3 and MMSZ4V3T1, the MM5Z4V3T1 offers optimal balance of ultra-compact size, 100 mW regulation capability, and proven manufacturability in high-volume portable electronics-making it ideal where PCB area is constrained but full qualification traceability is not mandatory.
Availability
MM5Z4V3T1 is available at Aetrix Electronics and suitable for smartphone power management, IoT sensor biasing, USB-C port protection, and industrial PLC input conditioning requiring stable component supply and rapid prototyping support.
Supply support for MM5Z4V3T1 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MM5Z4V3T1 belongs to the MM5Z series of miniature Zener regulators, engineered specifically for space-constrained, high-reliability applications in portable electronics and industrial control systems where low profile and ESD resilience are critical.
FAQ
What is the Zener voltage tolerance of MM5Z4V3T1?
The MM5Z4V3T1 has a specified Zener voltage range of 4.0 V to 4.6 V at 5 mA test current, representing ±5% tolerance around the nominal 4.3 V value. This tolerance is guaranteed across operating temperatures and ensures consistent clamping performance in production units of MM5Z4V3T1 without binning or calibration.
Can MM5Z4V3T1 be used in place of a 3.3 V Zener diode?
No - the MM5Z4V3T1 is rated for 4.3 V nominal breakdown and is not suitable as a direct substitute for a 3.3 V Zener. Using MM5Z4V3T1 in a 3.3 V rail would result in insufficient clamping, potentially allowing overvoltage conditions to persist. For 3.3 V regulation, MM5Z3V3T1 (3.1–3.5 V) is the appropriate variant in the same series.
What is the maximum steady-state power dissipation for MM5Z4V3T1?
The MM5Z4V3T1 has a maximum steady-state power dissipation of 100 mW at 25°C ambient temperature on an FR-5 board. Derating is required above 25°C - approximately 0.83 mW/°C - meaning at 85°C ambient, the usable power drops to ~50 mW. This limit must be observed in MM5Z4V3T1 thermal design to avoid junction overheating.
Does MM5Z4V3T1 meet industry ESD standards?
Yes - the MM5Z4V3T1 is rated Class 3 per Human Body Model (HBM) with >16 kV ESD withstand capability. This exceeds IEC 61000-4-2 Level 4 (8 kV contact) requirements and qualifies MM5Z4V3T1 for use in handheld devices, USB interfaces, and other end-equipment exposed to frequent electrostatic discharge events.
What is the forward voltage drop of MM5Z4V3T1?
The MM5Z4V3T1 exhibits a maximum forward voltage (VF) of 0.9 V at 10 mA forward current, as specified in the datasheet. This parameter is relevant when the device is inadvertently forward-biased, such as during circuit power-up sequencing or fault conditions - ensuring MM5Z4V3T1 does not create excessive voltage drop in unintended conduction paths.
MM5Z4V3T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±7%
- Power - Max:
- 100 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z4V3T1 FAQ
1.How can I place an order for MM5Z4V3T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z4V3T1 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 MM5Z4V3T1 reliable?
The price and inventory of MM5Z4V3T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z4V3T1 is usually 5 days.
3.What payment methods are accepted for MM5Z4V3T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z4V3T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z4V3T1?
MM5Z4V3T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z4V3T1 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 MM5Z4V3T1?
For technical support, including MM5Z4V3T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z4V3T1 requirements.
6.How does Aetrix verify that MM5Z4V3T1 is sourced from the original manufacturer or authorized distributors?
All MM5Z4V3T1 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 MM5Z4V3T1 meets industry standards.
7.What is the process for return or replacement of MM5Z4V3T1?
All MM5Z4V3T1 units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z4V3T1, 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 MM5Z4V3T1 part is unused and in its original packaging.
Return procedure for MM5Z4V3T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM5Z4V3T1 Tags
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MM5Z5V1ST1G
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