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Nexperia USA Inc. MM3Z12VT1GX
- Part No.:
- MM3Z12VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z12VT1GX.pdf
- Description:
- DIODE ZENER 12V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:38,917
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Product details
Overview
MM3Z12VT1GX from Nexperia is a 12 V ±5 % Zener voltage regulator diode in SOD323 (SC-76) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, with 0.1 Ω typical differential resistance at IZ = 9 mA and 105 pF capacitance at 1 MHz / 0 V. It serves as a precision shunt reference in low-power voltage regulation and overvoltage protection circuits.
For engineers reviewing the MM3Z12VT1GX datasheet, MM3Z12VT1GX pinout, MM3Z12VT1GX application, or MM3Z12VT1GX equivalent, key selection criteria include its 11.42–12.60 V nominal Zener voltage range, 9 mA test current, −55 °C to +150 °C operating temperature, and cathode-anode polarity marking per SOD323 footprint.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable DC voltage across load variations, with thermal coefficient of +6.0 mV/K at IZ = 9 mA and junction-to-ambient thermal resistance of 415 K/W on FR4 PCB. Its low 105 pF capacitance supports high-frequency noise suppression in feedback paths.
Designed for surface-mount use, it features a single-junction silicon structure with cathode marked by a bar on the SOD323 body, enabling compact placement in space-constrained power rails and analog reference networks where tight tolerance and low leakage (<10 µA at 9.0 V) are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 11.42–12.60 V at IZ = 9 mA - defines regulated output voltage window under nominal bias |
| Differential Resistance rdiff | 0.1 Ω max - ensures minimal voltage shift under load current changes |
| Power Dissipation Ptot | 300 mW at Tamb = 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power PZSM | 40 W (tp = 100 µs, square wave) - enables transient overvoltage clamping without failure |
| Reverse Current IR | <10 µA at VR = 9.0 V - guarantees low quiescent current in standby regulation |
| Capacitance Cd | 105 pF at f = 1 MHz, VR = 0 V - limits high-frequency impedance in filtering applications |
| Forward Voltage VF | 1.1 V at IF = 100 mA - defines conduction drop when used in forward-biased protection |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 2-terminal, 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-bias terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables predictable regulation without post-production trimming in cost-sensitive designs |
| Low 0.1 Ω differential resistance | Maintains voltage stability across ±10 mA load current variation in feedback loops |
| 40 W surge capability | Clamps ESD transients (IEC 61000-4-2 Level 4) without degradation when properly decoupled |
| 105 pF junction capacitance | Minimizes phase shift in op-amp reference buffers operating up to 10 MHz |
| −55 °C to +150 °C operating range | Supports deployment in automotive engine control modules and industrial sensor signal conditioning |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
|
Use Scenario: Providing stable 12 V reference for ADC voltage dividers and LDO feedback networks in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining accuracy within ±0.6 V across temperature and load. Use Value: Eliminates need for external precision resistor networks while meeting ±1% system-level voltage measurement requirements. |
Use Scenario: Clamping 12 V rail against load-dump spikes in automotive body control modules. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 40 W surges for <100 µs duration. Use Value: Prevents downstream IC damage during ISO 7637-2 Pulse 5a events without requiring TVS diode overhead. |
| Signal Level Translation | Current Source Biasing |
|
Use Scenario: Shifting logic-level signals between 3.3 V microcontrollers and 12 V analog front-ends in industrial PLC I/O cards. IC Role / Device Role / Timing Role: Bidirectional clamp limiting signal swing to safe thresholds during hot-swap transitions. Use Value: Enables robust level-shifting without active circuitry, reducing BOM count and layout area. |
Use Scenario: Setting bias current for op-amp input stages in precision instrumentation amplifiers. IC Role / Device Role / Timing Role: Stable current source via series resistor + Zener, delivering 9 mA ±0.45 mA. Use Value: Achieves <0.5 % current matching across units without laser-trimmed resistors or DACs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B12 | Same 12 V ±5 %, but 300 mW rating at Tamb = 55 °C (derated vs. MM3Z12VT1GX's 25 °C rating); higher rdiff = 0.25 Ω | Limited to ambient ≤55 °C in sealed enclosures; less stable under dynamic load steps | Select when legacy footprint compatibility with SOD323 is required and thermal margin exceeds 30 °C |
| 1N4742A | Through-hole DO-41 package; 12 V ±5 %, 1 W power rating; rdiff = 9 Ω - 90× higher than MM3Z12VT1GX | Not suitable for high-frequency or low-noise references; requires board real estate and wave soldering | Choose only for prototyping or high-power linear regulator pre-regulation where size is secondary |
Compared with BZX384-B12 and 1N4742A, MM3Z12VT1GX delivers superior voltage stability (0.1 Ω vs. 0.25 Ω/9 Ω), wider temperature operation (−55 °C to +150 °C), and smaller footprint-making it optimal for miniaturized, thermally demanding, or high-precision regulation tasks.
Availability
MM3Z12VT1GX is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and signal clamping requiring stable component supply across automotive, industrial, and consumer electronics programs.
Supply support for MM3Z12VT1GX 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 high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands.
The MM3Z series targets cost-effective, space-efficient voltage regulation in consumer and industrial applications, emphasizing small-footprint SOD323 packaging, tight Zener tolerance, and robust surge handling for modern PCB designs.
FAQ
What is the maximum continuous reverse current the MM3Z12VT1GX can sustain without exceeding its 300 mW rating?
At 12 V Zener voltage, the absolute maximum continuous reverse current is 25 mA (P = V × I → 300 mW ÷ 12 V = 25 mA). This assumes ambient temperature remains at 25 °C on FR4 PCB with standard footprint; derating applies above 25 °C per the 415 K/W thermal resistance specification.
Can MM3Z12VT1GX be used in place of a 12 V Zener in an op-amp feedback loop requiring low noise?
Yes - its 105 pF capacitance and 0.1 Ω differential resistance minimize phase shift and voltage drift, making it suitable for low-noise reference buffering. However, ensure the op-amp's input bias current remains below 100 nA to avoid loading-induced error, as specified in the device's reverse leakage profile.
How does the cathode marking on MM3Z12VT1GX align with SOD323 package orientation?
The cathode is marked by a visible bar on the top surface of the SOD323 body, aligned with Pin 1 per JEDEC MO-203AA outline. When viewed from above with the bar left-aligned, Pin 1 (cathode) is the left pad and Pin 2 (anode) is the right pad - matching the standard SOD323 land pattern in IPC-7351B.
Is MM3Z12VT1GX qualified for automotive applications per AEC-Q200?
No - Nexperia explicitly states in the legal disclaimers that MM3Z_SER devices are non-automotive qualified unless expressly designated. MM3Z12VT1GX lacks AEC-Q200 stress testing and is intended for commercial/industrial use only; automotive designs require AEC-Q200-compliant alternatives like PZU12B2 or BZX84-C12.
MM3Z12VT1GX 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):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9 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
MM3Z12VT1GX FAQ
1.How can I place an order for MM3Z12VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z12VT1GX 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 MM3Z12VT1GX reliable?
The price and inventory of MM3Z12VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z12VT1GX is usually 5 days.
3.What payment methods are accepted for MM3Z12VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z12VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z12VT1GX?
MM3Z12VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z12VT1GX 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 MM3Z12VT1GX?
For technical support, including MM3Z12VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z12VT1GX requirements.
6.How does Aetrix verify that MM3Z12VT1GX is sourced from the original manufacturer or authorized distributors?
All MM3Z12VT1GX 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 MM3Z12VT1GX meets industry standards.
7.What is the process for return or replacement of MM3Z12VT1GX?
All MM3Z12VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z12VT1GX, 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 MM3Z12VT1GX part is unused and in its original packaging.
Return procedure for MM3Z12VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM3Z12VT1GX Tags
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