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onsemi MM5Z4V7
- Part No.:
- MM5Z4V7
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523F
- Datasheet:
-
MM5Z4V7.pdf
- Description:
- DIODE ZENER 4.7V 500MW SOD523F
- Quantity:
- Payment:
- Shipping:
Inventory:689,377
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Product details
Overview
MM5Z4V7 from Fairchild Semiconductor is a surface-mount Zener diode with nominal zener voltage 4.7 V (min 4.4 V, max 5.0 V) at test current 5 mA, dynamic impedance 80 Ω, power dissipation 200 mW, and operating temperature range −55 °C to +150 °C. It provides precision voltage regulation in low-power biasing, reference, and overvoltage protection circuits.
For engineers reviewing the MM5Z4V7 datasheet, pinout, applications, or equivalent options, this device serves as a compact, RoHS-compliant voltage clamp for space-constrained consumer, industrial, and automotive electronics where stable 4.7 V reference or transient suppression is required.
Technical Context
The MM5Z4V7 operates as a two-terminal silicon Zener diode optimized for reverse-biased breakdown regulation. Its 4.7 V nominal zener voltage is specified under pulse test conditions (10 ms), with tight tolerance (±0.3 V) and low dynamic impedance (80 Ω at 5 mA) ensuring stable clamping performance across load and temperature variations.
Designed for SOD-523F package-0.7 mm height, flat lead, JEITA SC79 compliant-the device achieves high thermal resistance (500 °C/W junction-to-ambient) due to minimal PCB pad area, requiring careful layout for sustained 200 mW operation. Moisture sensitivity level is rated Class 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.4 V (min) to 5.0 V (max) at IZT = 5 mA - defines usable regulation window for 4.7 V nominal reference |
| Zener Impedance (ZZT) | 80 Ω max at IZT = 5 mA - determines output voltage deviation under varying load current |
| Test Current (IZT) | 5 mA - standard bias point for specifying VZ and ZZT; design must supply ≥5 mA for rated regulation |
| Power Dissipation (PD) | 200 mW - maximum continuous power at TA = 25 °C; derates above ambient temperature |
| Reverse Leakage (IR) | 3 μA max at VR = 2 V - ensures low quiescent current in standby or high-impedance sensing nodes |
| Operating Temperature | −55 °C to +150 °C - supports deployment in extended-environment automotive and industrial control modules |
Pinout & Package
MM5Z4V7 uses the SOD-523F surface-mount plastic package: 2-lead, JEITA SC79 compliant, 0.7 mm maximum height, matte tin (Sn) lead finish, green mold compound, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Connected to lower-potential node; reverse-biased during regulation; requires current-limiting resistor in series |
| 2 | Cathode | Marked with band; connected to higher-potential node; output voltage referenced to this terminal during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile SOD-523F package | 0.7 mm height enables use in ultra-thin portable devices and dense PCB layouts |
| Pb-free and RoHS-compliant construction | Meets global environmental compliance requirements without lead-based solder compatibility issues |
| Moisture Sensitivity Level 1 | No bake requirement before reflow; simplifies manufacturing handling and reduces process risk |
| Wide operating temperature range | −55 °C to +150 °C allows direct placement in engine control units, power supplies, and industrial sensors |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 4.7 V reference for ADC biasing or op-amp feedback networks in battery-powered IoT sensor nodes. IC Role / Device Role / Timing Role: Voltage reference element establishing precise DC offset or scaling point in analog signal chains. Use Value: Tight 4.4–5.0 V tolerance and 80 Ω impedance minimize reference drift across temperature and supply variation. | Use Scenario: Protecting microcontroller I/O pins from ESD or inductive kickback in automotive body control modules. IC Role / Device Role / Timing Role: Shunt clamping device diverting transient energy to ground when voltage exceeds 5.0 V. Use Value: Low 3 μA leakage at 2 V ensures no loading of sensitive input circuits during normal operation. |
| Low-Power Bias Network | Signal-Level Clipping |
Use Scenario: Generating fixed bias points for discrete transistor amplifiers in audio front-end circuits. IC Role / Device Role / Timing Role: DC voltage source setting emitter or gate bias in Class-A amplifier stages. Use Value: 200 mW rating supports continuous operation at 5 mA, enabling robust bias stability without thermal runaway. | Use Scenario: Limiting analog signal swing to ±4.7 V in data acquisition front-ends interfacing with 5 V logic. IC Role / Device Role / Timing Role: Bidirectional clipping element (with series diode) constraining peak AC amplitude. Use Value: Fast response to overvoltage transients due to low junction capacitance inherent to SOD-523F geometry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C4V7 | Same 4.7 V nominal VZ, but SOD-323 package (1.3 mm height); 90 Ω ZZT; 300 mW PD | Higher power handling and larger footprint; less suitable for ultra-thin assemblies | Select BZX584-C4V7 when thermal margin >200 mW is required and board height allows 1.3 mm |
| MMBZ5225BS | 4.7 V VZ, SOT-23 package (2.9 mm × 1.3 mm); 100 Ω ZZT; 300 mW PD; dual-anode configuration | Larger size and dual-diode topology enable redundancy or dual-rail clamping not possible with single MM5Z4V7 | Choose MMBZ5225BS for designs needing dual-channel protection or higher power in non-height-constrained layouts |
Compared with BZX584-C4V7 and MMBZ5225BS, the MM5Z4V7 offers the lowest profile (0.7 mm) and smallest footprint among 4.7 V Zeners, making it optimal for wearables and miniaturized PCBs where vertical clearance and area are critical constraints.
Availability
MM5Z4V7 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and low-power bias network applications requiring stable component supply and long-term manufacturability.
Supply support for MM5Z4V7 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The MM5Z4V7 belongs to Fairchild's MM5Z series of miniature Zener diodes, designed specifically for high-density, low-profile voltage regulation and protection in portable and automotive electronics.
FAQ
What is the zener voltage tolerance of MM5Z4V7?
The MM5Z4V7 has a zener voltage range of 4.4 V (minimum) to 5.0 V (maximum) at test current IZT = 5 mA, corresponding to a ±0.3 V absolute tolerance around the nominal 4.7 V rating. This tolerance is verified per Fairchild's MM5Z2V4–MM5Z75V datasheet Rev. 1.5 and applies under pulse test conditions (10 ms).
Can MM5Z4V7 be used in automotive applications?
Yes, MM5Z4V7 is qualified for automotive use due to its −55 °C to +150 °C operating temperature range, RoHS compliance, and moisture sensitivity level 1 rating. It is commonly deployed in body control modules and sensor interfaces where 4.7 V clamping or referencing is needed, provided thermal design accommodates its 200 mW power limit and 500 °C/W thermal resistance.
What is the cathode identification method on MM5Z4V7?
The cathode of MM5Z4V7 is identified by a visible band on the SOD-523F package body, aligned with pin 2. This marking follows JEITA SC79 standard and matches the electrical symbol shown in the Fairchild datasheet: pin 1 is anode, pin 2 (banded end) is cathode. Correct orientation is essential for proper reverse-bias operation.
How does MM5Z4V7 compare to MM5Z5V1 in terms of regulation performance?
MM5Z4V7 offers lower nominal zener voltage (4.7 V vs. 5.1 V), tighter dynamic impedance (80 Ω vs. 60 Ω), and higher reverse leakage (3 μA at 2 V vs. 2 μA). While MM5Z5V1 has slightly better impedance, MM5Z4V7 provides better fit for 4.7 V reference rails and exhibits lower knee voltage in low-current regulation scenarios typical of sensor biasing.
Is MM5Z4V7 compatible with lead-free reflow processes?
Yes, MM5Z4V7 features matte tin (Sn) lead finish and is explicitly rated Pb-free and RoHS compliant. Its SOD-523F package is qualified for standard lead-free reflow profiles (peak temperature ≤260 °C), and its moisture sensitivity level 1 classification eliminates pre-bake requirements-enabling drop-in compatibility with modern assembly lines.
MM5Z4V7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523F
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523F
MM5Z4V7 FAQ
1.How can I place an order for MM5Z4V7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z4V7 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 MM5Z4V7 reliable?
The price and inventory of MM5Z4V7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z4V7 is usually 5 days.
3.What payment methods are accepted for MM5Z4V7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z4V7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z4V7?
MM5Z4V7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z4V7 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 MM5Z4V7?
For technical support, including MM5Z4V7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z4V7 requirements.
6.How does Aetrix verify that MM5Z4V7 is sourced from the original manufacturer or authorized distributors?
All MM5Z4V7 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 MM5Z4V7 meets industry standards.
7.What is the process for return or replacement of MM5Z4V7?
All MM5Z4V7 units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z4V7, 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 MM5Z4V7 part is unused and in its original packaging.
Return procedure for MM5Z4V7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM5Z4V7 Tags
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