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onsemi MM3Z3V3TT1
- Part No.:
- MM3Z3V3TT1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z3V3TT1.pdf
- Description:
- DIODE ZENER 3.3V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,843
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Product details
Overview
MM3Z3V3TT1 from onsemi is a 3.3 V ±3.5% tolerance Zener diode in SOD−323 package, rated for 200 mW steady-state power dissipation at 25°C, with 100 Ω maximum Zener impedance at 5 mA test current and 1.0 µA reverse leakage at 2.5 V. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM3Z3V3TT1 datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 3.3 V Zener voltage tolerance (3.19–3.41 V), low 100 Ω dynamic impedance, ESD rating >16 kV HBM, SOD−323 footprint compatibility, and suitability for low-power biasing and overvoltage clamping in high-density PCBs.
Technical Context
The MM3Z3V3TT1 operates as a two-terminal voltage reference device, conducting in reverse breakdown to maintain stable 3.3 V across its terminals when biased above its knee current (IZK = 0.5 mA). Its thermal resistance is 635°C/W, requiring derating to 1.5 mW/°C above 25°C ambient.
It exhibits a temperature coefficient of −3.5 mV/°C at 5 mA, enabling predictable drift compensation in temperature-sensitive circuits. Capacitance is capped at 450 pF at 0 V and 1 MHz, supporting use in low-frequency regulation without signal coupling concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.19–3.41 V @ IZT = 5 mA - defines regulated output range under nominal bias |
| Power Dissipation | 200 mW @ TA = 25°C - sets maximum continuous DC power handling on FR-5 board |
| Zener Impedance (ZZT) | 100 Ω max @ IZT = 5 mA - determines AC regulation stability and ripple rejection |
| Reverse Leakage (IR) | 1.0 µA max @ VR = 2.5 V - ensures minimal standby current in clamping applications |
| ESD Rating | Class 3 (>16 kV) HBM - supports robust handling in manual assembly and portable end-equipment |
| Package | SOD−323 (Case 477) - 1.7 mm × 1.25 mm × 0.9 mm footprint ideal for ultra-compact layouts |
| Temperature Coefficient | −3.5 mV/°C @ IZT = 5 mA - enables predictable voltage drift correction in thermal design |
Pinout & Package
SOD−323 surface-mount package with cathode indicated by polarity band; body dimensions 1.7 mm × 1.25 mm × 0.9 mm; mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to higher-potential node during regulation; polarity band identifies this terminal |
| 2 (Anode) | Reference/ground terminal | Typically tied to system ground or lower-voltage rail; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener tolerance | ±3.5% (3.19–3.41 V) - reduces need for post-regulation trimming in precision references |
| Low-profile SOD−323 | 0.9 mm height - enables stacking under shields or placement near tall components |
| High ESD immunity | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in handheld interfaces |
| Pb-free option available | MM3Z3V3TT1G variant - supports RoHS-compliant manufacturing without requalification |
Applications
| Battery Voltage Monitoring | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Monitoring Li-ion battery cell voltage in wearables to trigger low-battery alerts before cutoff. IC Role / Device Role / Timing Role: Zener reference for ADC input scaling and comparator threshold setting. Use Value: Tight 3.3 V tolerance ensures consistent trip point across temperature and unit-to-unit variation. | Use Scenario: Protecting USB data lines from transient surges during hot-plug events in portable accessories. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp limiting line voltage to safe levels. Use Value: 450 pF capacitance avoids signal integrity degradation on 480 Mbps USB 2.0 lines. |
| Low-Power Sensor Biasing | Microcontroller Reset Circuit |
Use Scenario: Providing stable 3.3 V bias to analog front-end op-amps in always-on environmental sensors. IC Role / Device Role / Timing Role: Precision voltage source replacing larger LDOs where quiescent current must be minimized. Use Value: 1.0 µA leakage at 2.5 V ensures sub-µA sleep-mode current contribution. | Use Scenario: Generating clean reset pulse for ARM Cortex-M microcontrollers during power-up and brownout. IC Role / Device Role / Timing Role: Threshold element in RC-based reset generator with hysteresis. Use Value: −3.5 mV/°C tempco allows predictable reset voltage shift across −40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3,115 | Same 3.3 V nominal, ±5% tolerance (3.14–3.47 V); 300 mW rating; SOD-323 package | Higher power rating supports higher surge energy but requires layout review for thermal relief | Select when higher transient power handling is required and tighter voltage tolerance is acceptable |
| MMSZ3V3T1G | Same 3.3 V nominal, ±5% tolerance (3.14–3.47 V); 500 mW rating; SOD-123 package (larger footprint) | Larger SOD-123 footprint incompatible with SOD-323 land pattern; higher power dissipation capability | Select when board space permits larger package and higher continuous power is needed |
Compared with MM3Z3V3TT1, BZX384-B3V3,115 offers wider tolerance but higher power, while MMSZ3V3T1G delivers greater power at the cost of incompatible packaging-both require validation of thermal performance and PCB layout fit.
Availability
MM3Z3V3TT1 is available at Aetrix Electronics and suitable for battery monitoring, USB interface protection, and low-power sensor biasing requiring stable component supply and consistent Zener voltage performance across production lots.
Supply support for MM3Z3V3TT1 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM3ZxxxST1 series was designed specifically for space-constrained, low-power voltage regulation and clamping in portable electronics, emphasizing tight tolerance, small footprint, and high ESD robustness.
FAQ
What is the Zener voltage range specified for MM3Z3V3TT1?
The MM3Z3V3TT1 has a guaranteed Zener voltage range of 3.19 V to 3.41 V at a test current of 5 mA, corresponding to a ±3.5% tolerance around the nominal 3.3 V rating. This range is validated per the onsemi datasheet revision 9 and applies under standard conditions of TA = 25°C. The MM3Z3V3TT1 maintains this specification across its qualified operating temperature range.
Does MM3Z3V3TT1 support Pb-free assembly processes?
Yes, MM3Z3V3TT1 is compatible with Pb-free reflow soldering per JEDEC J-STD-020, with a maximum soldering temperature of 260°C for 10 seconds. The device uses Sn-only plating on leads and meets RoHS requirements. For full process guidance, refer to onsemi's Soldering and Mounting Techniques Reference Manual; MM3Z3V3TT1G is the explicitly marked Pb-free variant.
What is the maximum Zener impedance of MM3Z3V3TT1 and at what condition is it measured?
The maximum Zener impedance (ZZT) of MM3Z3V3TT1 is 100 Ω, measured at the specified test current IZT = 5 mA and TA = 25°C. This value reflects dynamic impedance under small-signal AC conditions and directly impacts ripple rejection in regulation applications. The MM3Z3V3TT1 achieves this low impedance while maintaining tight voltage tolerance and compact SOD−323 packaging.
Can MM3Z3V3TT1 be used in place of MM3Z3V3ST1?
No - MM3Z3V3TT1 and MM3Z3V3ST1 are distinct variants: MM3Z3V3TT1 has tighter tolerance (±3.5% vs. ±5.5% for ST1) and lower ZZT (100 Ω vs. 95 Ω), confirmed in the same datasheet table. Substitution requires verification of circuit sensitivity to voltage spread and impedance. The MM3Z3V3TT1 is not a drop-in replacement for MM3Z3V3ST1 without design review.
What is the reverse leakage current specification for MM3Z3V3TT1?
The MM3Z3V3TT1 specifies a maximum reverse leakage current (IR) of 1.0 µA at VR = 2.5 V and TA = 25°C. This low leakage supports ultra-low-power applications such as battery-backed monitoring circuits and sleep-mode clamping. The value is measured per the onsemi electrical characteristics table and remains valid across the full −65°C to +150°C storage temperature range.
MM3Z3V3TT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±3%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-323
MM3Z3V3TT1 FAQ
1.How can I place an order for MM3Z3V3TT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z3V3TT1 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 MM3Z3V3TT1 reliable?
The price and inventory of MM3Z3V3TT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z3V3TT1 is usually 5 days.
3.What payment methods are accepted for MM3Z3V3TT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z3V3TT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z3V3TT1?
MM3Z3V3TT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z3V3TT1 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 MM3Z3V3TT1?
For technical support, including MM3Z3V3TT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z3V3TT1 requirements.
6.How does Aetrix verify that MM3Z3V3TT1 is sourced from the original manufacturer or authorized distributors?
All MM3Z3V3TT1 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 MM3Z3V3TT1 meets industry standards.
7.What is the process for return or replacement of MM3Z3V3TT1?
All MM3Z3V3TT1 units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z3V3TT1, 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 MM3Z3V3TT1 part is unused and in its original packaging.
Return procedure for MM3Z3V3TT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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