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onsemi MM5Z22VT1G
- Part No.:
- MM5Z22VT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z22VT1G.pdf
- Description:
- DIODE ZENER 22V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,185
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Product details
Overview
MM5Z22VT1G from onsemi is a 22 V, ±5% tolerance Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 55 Ω maximum Zener impedance at 5 mA test current and 16.4 V reverse leakage voltage threshold. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM5Z22VT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 22 V nominal Zener voltage, 55 Ω dynamic impedance, 16.4 V VR rating, 0.05 μA IR at 16.4 V, and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp or regulate voltage across a load. Its thermal resistance of 250 °C/W (Junction-to-Ambient) and 150 °C maximum junction temperature define safe operating limits under derated power conditions.
The MM5Z22VT1G exhibits a +0.058 %/°C temperature coefficient of VZ and 85 pF capacitance at 0 V and 1 MHz, making it suitable for low-frequency stabilization rather than RF bypassing. Its ESD rating exceeds 16 kV per Human Body Model, supporting robust handling in automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 22 V - precise clamping voltage at 5 mA test current, with ±5% tolerance (20.8–23.3 V range) |
| Power Dissipation | 500 mW - maximum steady-state power on FR-4 board at 25 °C; derates linearly at 4.0 mW/°C above ambient |
| Zener Impedance | 55 Ω max @ IZT = 5 mA - low dynamic resistance ensures stable regulation under varying load currents |
| Reverse Leakage | 0.05 μA max @ VR = 16.4 V - minimal off-state current preserves battery life in low-power systems |
| Capacitance | 85 pF @ VR = 0 V, f = 1 MHz - defines high-frequency filtering capability and signal integrity impact |
| ESD Rating | Class 3 (>16 kV HBM) - enables direct handling and placement without special ESD controls in production |
| Package | SOD-523 (1.20 × 0.80 × 0.70 mm) - ultra-compact surface-mount outline for high-density mobile PCBs |
Pinout & Package
SOD-523 package with cathode-anode polarity marking: cathode indicated by band (Pin 1), anode unmarked (Pin 2). Mounting position is unrestricted; qualified for 260 °C reflow and meets MSL 1 requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Unmarked End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOD-523 footprint | 1.20 mm × 0.80 mm body enables placement in <1.5 mm² board area, critical for smartphones and wearables |
| 500 mW power rating | Supports regulation of moderate-current rails (e.g., 22 mA at 22 V) without external heatsinking |
| ±5% Zener tolerance | Ensures predictable clamping within 1.1 V window, simplifying margin analysis in power supply feedback paths |
| 16 kV HBM ESD robustness | Eliminates need for additional ESD protection components in handheld device front-end circuits |
| Pb-free and RoHS-compliant | Meets global environmental compliance mandates without requiring special soldering profiles or exemptions |
Applications
| Battery Voltage Monitoring | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Detecting Li-ion battery overcharge condition in portable medical devices using a comparator reference input. IC Role / Device Role / Timing Role: Provides stable 22 V reference voltage to comparator circuit that triggers cutoff when cell stack exceeds safe threshold. Use Value: Tight 22 V ±5% tolerance ensures accurate trip point without calibration; low 0.05 μA leakage minimizes quiescent drain on standby battery. | Use Scenario: Clamping transient surges on USB 3.0 VBUS line caused by hot-plug in industrial docking stations. IC Role / Device Role / Timing Role: Acts as shunt regulator to divert surge energy above 22 V to ground before reaching downstream USB controller IC. Use Value: 55 Ω Zener impedance ensures rapid response to fast transients; SOD-523 size allows placement directly at connector footprint. |
| Low-Power Sensor Biasing | Industrial PLC Input Conditioning |
Use Scenario: Supplying stable bias voltage to MEMS pressure sensor analog front-end in wireless IoT nodes. IC Role / Device Role / Timing Role: Delivers regulated 22 V supply to sensor excitation circuit, independent of main system rail fluctuations. Use Value: 85 pF capacitance avoids signal distortion in sensor output path; 150 °C max junction temperature supports operation in enclosed enclosures. | Use Scenario: Level-shifting and overvoltage protection for 24 V DC digital inputs in factory automation controllers. IC Role / Device Role / Timing Role: Clamps input transients above 22 V while presenting high impedance to valid 0–24 V logic signals. Use Value: 250 °C/W thermal resistance allows reliable operation at 70 °C ambient with no airflow; Pb-free finish ensures long-term solder joint reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C22LT1G | Same 22 V nominal, ±5% tolerance, but in SOT-23 package (2.9 × 1.3 × 1.0 mm); 350 mW power rating | Larger footprint and lower power limit restrict use in ultra-thin or high-density designs | Select when board layout allows SOT-23 and thermal budget permits lower dissipation |
| MMSZ5247BT1G | 22 V nominal, ±5% tolerance, SOD-123 package (3.7 × 1.6 × 1.1 mm); 500 mW rating but higher 110 Ω Zener impedance | Higher dynamic impedance reduces regulation accuracy under load variation | Choose when mechanical robustness is prioritized over tight voltage stability |
Compared with BZX584C22LT1G and MMSZ5247BT1G, the MM5Z22VT1G delivers identical voltage regulation performance in a 65% smaller footprint with superior 55 Ω impedance-enabling tighter control in miniaturized, battery-powered systems where board space and regulation fidelity are critical.
Availability
MM5Z22VT1G is available at Aetrix Electronics and suitable for battery monitoring, USB protection, sensor biasing, and industrial input conditioning requiring stable component supply and consistent parametric performance across production lots.
Supply support for MM5Z22VT1G 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 supplier of energy-efficient semiconductor solutions, specializing in automotive, industrial, cloud, and IoT applications.
The MM5ZxxxT1G series was developed specifically for compact, high-reliability voltage regulation in portable and space-constrained electronics, emphasizing low-profile packaging, high ESD immunity, and tight parametric consistency.
FAQ
What is the Zener voltage tolerance of MM5Z22VT1G?
The MM5Z22VT1G has a standard ±5% tolerance on its nominal 22 V Zener voltage, meaning the actual breakdown voltage falls between 20.8 V and 23.3 V at 5 mA test current and 25 °C ambient temperature. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 19, April 2025).
What is the maximum power dissipation for MM5Z22VT1G at 70 °C ambient?
At 70 °C ambient, the MM5Z22VT1G's maximum power dissipation is 320 mW. This is calculated using the 4.0 mW/°C derating factor from its 500 mW rating at 25 °C: 500 mW − (45 °C × 4.0 mW/°C) = 320 mW. The derating applies to FR-4 boards with 1 cm² copper pad, per Note 1 in the Maximum Ratings table.
Does MM5Z22VT1G have automotive qualification?
The MM5Z22VT1G is not AEC-Q101 qualified. Only variants with the "SZ" prefix (e.g., SZMM5Z22VT1G) meet AEC-Q101 requirements and PPAP capability for automotive applications. The MM5Z22VT1G is intended for commercial and industrial use, as stated in the datasheet's "SZ Prefix" feature note.
What is the reverse leakage current specification for MM5Z22VT1G?
The MM5Z22VT1G specifies a maximum reverse leakage current (IR) of 0.05 μA at VR = 16.4 V and TA = 25 °C. This value is listed in the Electrical Characteristics table on page 3 of the onsemi datasheet and reflects the diode's ability to hold off voltage with negligible off-state current.
Can MM5Z22VT1G be used as a voltage reference in precision analog circuits?
The MM5Z22VT1G is not recommended for precision analog references due to its ±5% voltage tolerance, +0.058 %/°C temperature coefficient, and 55 Ω dynamic impedance-parameters optimized for general-purpose regulation, not low-drift referencing. For precision applications, dedicated voltage reference ICs with ppm/°C drift and sub-0.1% initial accuracy should be selected instead of the MM5Z22VT1G.
MM5Z22VT1G 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):
- 22 V
- Tolerance:
- ±5.7%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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
MM5Z22VT1G FAQ
1.How can I place an order for MM5Z22VT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z22VT1G 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 MM5Z22VT1G reliable?
The price and inventory of MM5Z22VT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z22VT1G is usually 5 days.
3.What payment methods are accepted for MM5Z22VT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z22VT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z22VT1G?
MM5Z22VT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z22VT1G 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 MM5Z22VT1G?
For technical support, including MM5Z22VT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z22VT1G requirements.
6.How does Aetrix verify that MM5Z22VT1G is sourced from the original manufacturer or authorized distributors?
All MM5Z22VT1G 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 MM5Z22VT1G meets industry standards.
7.What is the process for return or replacement of MM5Z22VT1G?
All MM5Z22VT1G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z22VT1G, 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 MM5Z22VT1G part is unused and in its original packaging.
Return procedure for MM5Z22VT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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