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onsemi MM3Z22VT1
- Part No.:
- MM3Z22VT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z22VT1.pdf
- Description:
- DIODE ZENER 22V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
MM3Z22VT1 from onsemi is a 22 V, 200 mW surface-mount Zener diode in SOD−323 package, designed for precision voltage regulation and overvoltage protection in space-constrained circuits. It delivers nominal Zener voltage of 22 V at 5 mA test current, with dynamic impedance ≤55 Ω, leakage current ≤0.05 µA at 15.4 V, and operates across −65°C to +150°C junction temperature range.
For engineers reviewing the MM3Z22VT1 datasheet, pinout, applications, or equivalent options, key selection factors include its 22 V regulation tolerance (±5.0%), low-profile 0.9 mm height, Pb-free SOD−323 package, ESD rating >16 kV HBM, and suitability for portable power rail clamping and reference stabilization.
Technical Context
The MM3Z22VT1 functions as a two-terminal shunt regulator, maintaining stable reverse-biased breakdown voltage under varying load and temperature conditions. Its Zener impedance of 55 Ω at 5 mA and 100 Ω at 0.5 mA enables predictable voltage clamping in feedback paths and supply rails.
Thermal resistance of 635°C/W and 1.5 mW/°C derating above 25°C define its thermal management requirements on FR-5 board. The device exhibits a positive temperature coefficient of +16.4 mV/°C, ensuring predictable drift behavior in ambient-varying environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.8 V min / 22 V nom / 23.3 V max @ IZT = 5 mA - defines regulation window for 22 V rail stabilization |
| Zener Impedance (ZZT) | ≤55 Ω @ IZT = 5 mA - ensures minimal output voltage variation under dynamic load changes |
| Leakage Current (IR) | ≤0.05 µA @ VR = 15.4 V - guarantees negligible standby power loss in high-impedance bias networks |
| Power Dissipation (PD) | 200 mW @ TA = 25°C - sets maximum continuous clamping energy without thermal runaway |
| Capacitance (C) | 20 pF @ VR = 0 V, f = 1 MHz - limits high-frequency noise coupling in signal-path references |
| ESD Rating | Class 3 (>16 kV) per HBM - supports robust handling in automated assembly and end-user portable environments |
| Junction Temp Range | −65°C to +150°C - enables operation in automotive under-hood and industrial control environments |
Pinout & Package
SOD−323 surface-mount package: 1.7 mm × 1.25 mm body, 0.9 mm height, cathode indicated by polarity band. Mounting position unrestricted; compatible with standard reflow profiles (260°C for 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to circuit ground or lower-potential reference; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Pb-free SOD−323 packaging | RoHS-compliant construction with Sn-only or Pb−Sn plating; supports lead-free manufacturing |
| Low-profile mechanical footprint | 0.9 mm max height enables stacking under shields and integration into ultra-thin mobile PCBs |
| High ESD immunity | Class 3 HBM (>16 kV) eliminates need for external ESD protection in handheld interface circuits |
| Stable temperature coefficient | +16.4 mV/°C enables predictable drift compensation in temperature-critical reference designs |
| UL 94 V−0 flammability rating | Self-extinguishing plastic case meets safety requirements for consumer and medical peripherals |
Applications
| Portable Power Rail Clamping | Microcontroller Reset Reference |
|---|---|
|
Use Scenario: Protecting 24 V input rails in Bluetooth headsets and wearables against transient surges during USB hot-plug events. IC Role / Device Role / Timing Role: Shunt clamping element that diverts excess energy to ground before downstream LDOs or PMICs are stressed. Use Value: 22 V nominal breakdown prevents overvoltage damage while allowing margin below 24 V system max, with 55 Ω ZZT limiting clamp voltage rise under 100 mA transients. |
Use Scenario: Providing stable reset threshold for ARM Cortex-M0+ microcontrollers in smart sensor nodes operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Precision voltage reference for RC-based reset generator circuits requiring repeatable trip point. Use Value: ±5.0% VZ tolerance and +16.4 mV/°C TC ensure reset assertion remains within 21.5–22.5 V across full temperature range, avoiding spurious resets. |
| ADC Voltage Reference Stabilization | USB-C Port Overvoltage Protection |
|
Use Scenario: Biasing the reference input of 12-bit SAR ADCs in battery-powered data loggers where supply ripple exceeds 100 mVpp. IC Role / Device Role / Timing Role: Low-noise, low-capacitance (20 pF) shunt regulator establishing clean 22 V reference for divider networks. Use Value: 20 pF capacitance minimizes phase shift in high-frequency reference paths; 0.05 µA leakage avoids loading high-Z divider arms. |
Use Scenario: Secondary overvoltage clamp on USB-C VBUS lines in multi-port docking stations supporting PD 3.0 negotiation up to 20 V. IC Role / Device Role / Timing Role: Fast-response secondary protection stage activated only when primary TVS fails or during slow-rising faults. Use Value: 22 V breakdown provides 2 V guardband above 20 V PD max, while SOD−323 size allows placement adjacent to connector without trace length penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B22,115 | Same 22 V nominal Zener, but 300 mW rating and SOD-323 package; higher ZZT (90 Ω) and wider VZ tolerance (±5.3%) | Higher power dissipation suits intermittent surge clamping; less precise for reference use | Select BZX384-B22,115 when thermal margin >200 mW is required and tighter VZ stability is not critical |
| MMSZ5247B-TP | 22 V Zener in SOD-123; 500 mW rating; ZZT = 30 Ω; tighter VZ tolerance (±5.0%) but larger footprint (2.7 × 1.4 mm) | Lower impedance improves regulation under dynamic loads; larger size limits ultra-dense layouts | Select MMSZ5247B-TP when lowest possible ZZT is prioritized and PCB area permits SOD-123 |
Compared with MM3Z22VT1, BZX384-B22,115 offers higher power headroom but looser regulation, while MMSZ5247B-TP delivers superior impedance performance at the cost of 2.3× larger board area-making MM3Z22VT1 optimal for space-constrained 22 V reference and clamping where 200 mW and 55 Ω meet design margins.
Availability
MM3Z22VT1 is available at Aetrix Electronics and suitable for portable electronics, microcontroller reset circuits, and ADC reference stabilization requiring stable component supply with consistent parametric performance across production lots.
Supply support for MM3Z22VT1 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 focused on energy-efficient innovation for automotive, industrial, cloud, and intelligent edge applications.
The MM3Z22VT1 belongs to the MM3Z2V4T1 series of 200 mW Zener regulators, engineered specifically for miniaturized voltage reference and protection in high-density portable and IoT devices.
FAQ
What is the Zener voltage tolerance of MM3Z22VT1?
The MM3Z22VT1 has a Zener voltage range of 20.8 V (minimum) to 23.3 V (maximum) at 5 mA test current, corresponding to a ±5.0% tolerance around the nominal 22 V value. This specification is measured at 25°C ambient and defines the guaranteed regulation window for circuit design margining.
Can MM3Z22VT1 be used in place of a 24 V Zener diode?
No-MM3Z22VT1 is rated for 22 V nominal breakdown and must not be substituted for a 24 V Zener without verifying system-level overvoltage margins. Its absolute maximum Zener voltage is 23.3 V, leaving insufficient guardband for reliable 24 V rail clamping; use MM3Z24VT1 instead for 24 V applications.
What is the maximum steady-state power dissipation for MM3Z22VT1?
The MM3Z22VT1 has a maximum steady-state power dissipation of 200 mW at 25°C ambient temperature on an FR-5 board. Power must be derated linearly at 1.5 mW/°C above 25°C, reaching zero dissipation at approximately 158°C ambient-requiring thermal analysis for high-temperature deployments.
Does MM3Z22VT1 have a specified forward voltage?
Yes-the MM3Z22VT1 has a maximum forward voltage of 0.9 V at 10 mA forward current, as confirmed in the Electrical Characteristics table. This parameter is relevant for reverse-polarity protection configurations or diagnostic continuity checks using forward bias.
Is MM3Z22VT1 RoHS compliant and lead-free?
Yes-MM3Z22VT1 is offered in a Pb-free SOD−323 package (indicated by the "G" suffix), meeting RoHS Directive 2011/65/EU requirements. The leads are plated with pure tin, and the device carries UL 94 V−0 flammability certification for safety-critical implementations.
MM3Z22VT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 300 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-323
MM3Z22VT1 FAQ
1.How can I place an order for MM3Z22VT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z22VT1 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 MM3Z22VT1 reliable?
The price and inventory of MM3Z22VT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z22VT1 is usually 5 days.
3.What payment methods are accepted for MM3Z22VT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z22VT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z22VT1?
MM3Z22VT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z22VT1 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 MM3Z22VT1?
For technical support, including MM3Z22VT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z22VT1 requirements.
6.How does Aetrix verify that MM3Z22VT1 is sourced from the original manufacturer or authorized distributors?
All MM3Z22VT1 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 MM3Z22VT1 meets industry standards.
7.What is the process for return or replacement of MM3Z22VT1?
All MM3Z22VT1 units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z22VT1, 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 MM3Z22VT1 part is unused and in its original packaging.
Return procedure for MM3Z22VT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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