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Nexperia USA Inc. MM3Z3V3T1GX
- Part No.:
- MM3Z3V3T1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z3V3T1GX.pdf
- Description:
- DIODE ZENER 3.3V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,156
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Product details
Overview
MM3Z3V3T1GX from Nexperia is a 3.3 V ±5 % tolerance Zener diode in SOD323 (SC-76) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, with 5.0 Ω differential resistance at IZ = 5 mA and −3.5 to 0 mV/K temperature coefficient - used for precision low-voltage regulation in space-constrained power rails.
For engineers reviewing the MM3Z3V3T1GX datasheet, MM3Z3V3T1GX pinout, MM3Z3V3T1GX application, or MM3Z3V3T1GX equivalent, key selection factors include its 3.10–3.50 V nominal Zener voltage range, cathode-anode polarity marking (XW code), thermal resistance of 415 K/W (junction-to-ambient), and suitability for biasing, reference, and overvoltage protection in portable and industrial DC/DC circuits.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across 5 mA test current, leveraging silicon junction physics to maintain stable reference potential under varying load and temperature conditions. Its low 5.0 Ω dynamic impedance ensures minimal output voltage deviation during transient current changes.
The device exhibits a negative-to-zero temperature coefficient (−3.5 to 0 mV/K) optimized for 3.3 V operation, enabling predictable drift behavior in ambient ranges from −55 °C to +150 °C. Thermal design relies on FR4 PCB mounting with single-sided copper, where junction-to-solder-point resistance is 110 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.10–3.50 V at IZ = 5 mA - defines stable regulation point for 3.3 V rail clamping or reference generation |
| Differential Resistance (rdiff) | 5.0 Ω at IZ = 5 mA - ensures ≤15 mV output shift per 3 mA load change, critical for low-noise analog references |
| Temperature Coefficient (SZ) | −3.5 to 0 mV/K - enables predictable, bounded drift over −55 °C to +150 °C ambient, supporting industrial-grade stability |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 µs - supports transient surge suppression (e.g., ESD or inductive kick) without failure |
| Forward Voltage (VF) | 1.1 V at IF = 100 mA - defines forward conduction loss when used in polarity-sensitive clamp configurations |
| Junction Temperature (Tj) | 150 °C maximum - constrains thermal design margin when operating near Ptot limit in enclosed environments |
Pinout & Package
MM3Z3V3T1GX uses the SOD323 (SC-76) surface-mount plastic package: 1.35 mm × 0.85 mm body, 0.45 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs; marked by XW bar |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation current flow |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 5.0 Ω at 5 mA - minimizes regulation error under dynamic load, improving accuracy in feedback networks |
| Tight voltage tolerance | ±5 % (3.10–3.50 V) - reduces binning requirements and simplifies design margining for 3.3 V systems |
| Small-footprint SMD package | SOD323 (1.35 × 0.85 mm) - enables high-density layout in wearables, IoT sensors, and compact power modules |
| Controlled temperature coefficient | −3.5 to 0 mV/K - delivers predictable, low-drift performance across extended industrial temperature ranges |
| High surge capability | 40 W non-repetitive peak power - withstands short-duration transients without degradation in protection circuits |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 3.3 V reference for ADC voltage dividers and op-amp biasing in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential independent of supply variation. Use Value: 5.0 Ω rdiff limits reference error to <10 mV under 2 mA load shifts, ensuring <0.3% ADC full-scale accuracy. |
Use Scenario: Clamping microcontroller I/O pins against 5 V rail surges in mixed-voltage interface circuits. IC Role / Device Role / Timing Role: Cathode tied to protected line, anode to 3.3 V rail - conducts only above 3.5 V to shunt excess current. Use Value: 40 W peak surge rating absorbs 100 µs transients without parametric shift, preserving signal integrity. |
| LED Current Bias | Low-Power Voltage Monitor |
|
Use Scenario: Setting bias current for indicator LEDs in HVAC control panels using a simple resistor-Zener network. IC Role / Device Role / Timing Role: Zener maintains fixed voltage drop across series resistor to define LED current. Use Value: ±5 % VZ tolerance ensures consistent LED brightness across production batches without calibration. |
Use Scenario: Detecting brown-out conditions in firmware by monitoring Zener conduction via GPIO input. IC Role / Device Role / Timing Role: Anode grounded, cathode pulled up through resistor - GPIO reads high until supply drops below 3.1 V. Use Value: −3.5 to 0 mV/K coefficient ensures trip point remains within 3.1–3.5 V across −40 °C to +85 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3,115 (Nexperia) | Same 3.3 V ±5 % rating, but SOD323 package with tighter 2 % tolerance option; 400 mW Ptot | Higher power rating supports higher continuous current in reference designs requiring >10 mA | Select when needing higher steady-state current headroom or tighter initial tolerance |
| MMBZ5226BS-7-F (Diodes Inc.) | 3.3 V ±5 %, SOT-323 package (same footprint), 350 mW Ptot, rdiff = 15 Ω at 20 mA | Higher dynamic impedance increases regulation error under load; better surge rating (50 W) | Choose for legacy SOT-323 board compatibility or where higher surge immunity outweighs regulation precision |
Compared with MM3Z3V3T1GX, BZX384-B3V3 offers higher power and optional tighter tolerance but same package, while MMBZ5226BS trades lower rdiff for broader surge capability and identical footprint - making each suitable for distinct trade-offs between precision, power, and robustness.
Availability
MM3Z3V3T1GX is available at Aetrix Electronics and suitable for portable medical monitors, industrial sensor transmitters, and automotive body-control modules requiring stable component supply with tight Zener voltage control and low-profile packaging.
Supply support for MM3Z3V3T1GX 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The MM3Z series targets general-purpose voltage regulation in space-constrained applications, emphasizing manufacturability, consistency, and thermal reliability across wide ambient conditions.
FAQ
What is the maximum continuous reverse current this Zener can handle at 25 °C?
At Tamb = 25 °C on standard FR4 PCB, MM3Z3V3T1GX supports up to 90.9 mA continuous reverse current (300 mW ÷ 3.3 V), limited by its 300 mW total power dissipation rating and thermal resistance of 415 K/W - exceeding typical 5 mA test current by nearly 18×.
How does the XW marking identify cathode orientation on the SOD323 package?
The XW marking appears as a bar adjacent to pin 1 on the top surface of the SOD323 package; per Nexperia's pinning diagram, this bar denotes the cathode terminal (pin 1), while pin 2 is the unmarked anode - critical for correct reverse-bias orientation in circuit layout.
Can this Zener be used in series for higher voltage references?
Yes - MM3Z3V3T1GX may be cascaded in series to generate composite reference voltages (e.g., two devices yield ~6.6 V), but cumulative tolerance (±5 % each) and mismatched temperature coefficients require derating; parallel use is not recommended due to current-sharing instability.
What reflow profile parameters are validated for this SOD323 device?
Nexperia specifies a peak reflow temperature of 260 °C for 10–20 seconds, with ramp-up rate ≤3 °C/s and ramp-down rate ≤6 °C/s; the SOD323 footprint in Figure 12 uses 0.5 mm × 0.6 mm solder lands with 0.6 mm spacing - matching JEDEC J-STD-020 moisture sensitivity level 1.
MM3Z3V3T1GX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- MM3Z
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MM3Z3V3T1GX FAQ
1.How can I place an order for MM3Z3V3T1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z3V3T1GX 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 MM3Z3V3T1GX reliable?
The price and inventory of MM3Z3V3T1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z3V3T1GX is usually 5 days.
3.What payment methods are accepted for MM3Z3V3T1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z3V3T1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z3V3T1GX?
MM3Z3V3T1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z3V3T1GX 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 MM3Z3V3T1GX?
For technical support, including MM3Z3V3T1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z3V3T1GX requirements.
6.How does Aetrix verify that MM3Z3V3T1GX is sourced from the original manufacturer or authorized distributors?
All MM3Z3V3T1GX 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 MM3Z3V3T1GX meets industry standards.
7.What is the process for return or replacement of MM3Z3V3T1GX?
All MM3Z3V3T1GX units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z3V3T1GX, 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 MM3Z3V3T1GX part is unused and in its original packaging.
Return procedure for MM3Z3V3T1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM3Z3V3T1GX Tags
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