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Nexperia USA Inc. MM3Z75VT1GX
- Part No.:
- MM3Z75VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z75VT1GX.pdf
- Description:
- DIODE ZENER 75V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
MM3Z75VT1GX from Nexperia is a 75 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, designed for precision voltage regulation and reference functions in low-power analog circuits.
For engineers reviewing the MM3Z75VT1GX datasheet, MM3Z75VT1GX pinout, MM3Z75VT1GX application, or MM3Z75VT1GX equivalent, key selection criteria include its 70–79 V working voltage range at IZ = 2 mA, 50 Ω typical differential resistance, −52.5 to +52.5 mV/K temperature coefficient, and suitability for voltage clamping and overvoltage protection in space-constrained PCB designs.
Technical Context
This Zener diode operates in reverse breakdown with a nominal Zener voltage of 75 V at 2 mA test current, exhibiting low dynamic impedance (50 Ω max) and stable regulation under transient surge conditions up to 40 W for 100 µs square-wave pulses.
Its thermal resistance from junction to ambient is 415 K/W on standard FR4 PCB, and junction-to-solder-point resistance is 110 K/W, enabling reliable operation up to 150 °C junction temperature with proper board layout and thermal relief.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 70.0–79.0 V at IZ = 2 mA - defines precise clamping threshold for overvoltage protection circuits |
| Differential Resistance (rdiff) | 50 Ω max at IZ = 2 mA - ensures minimal voltage deviation under load current variation |
| Temperature Coefficient (SZ) | ±52.5 mV/K at IZ = 2 mA - quantifies voltage drift per degree Celsius for stability-critical references |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - sets continuous DC power limit on standard FR4 PCB |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 µs square wave - supports transient surge suppression without failure |
| Reverse Current (IR) | ≤ 500 µA at VR = 52.5 V - confirms low leakage below breakdown, critical for standby power integrity |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - enables predictable forward conduction in dual-direction clamp configurations |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 2.7 × 1.6 mm footprint, 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; polarity marker determines correct orientation for reverse-bias operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| Wide Zener voltage range | 2.4 V to 75 V across series - enables single-family selection for diverse supply rail monitoring needs |
| Low differential resistance | 50 Ω max at 75 V rating - maintains tight regulation under varying load currents in feedback networks |
| Stable temperature coefficient | ±52.5 mV/K - allows predictable compensation in temperature-sensitive reference designs |
| SOD323 ultra-small footprint | 2.7 × 1.6 mm, 0.45 mm height - fits high-density layouts where board space is constrained |
| Robust surge capability | 40 W non-repetitive peak power - withstands ESD and line transients without degradation |
Applications
| Power Supply Rail Monitoring | ADC Reference Stabilization |
|---|---|
|
Use Scenario: Monitoring 48 V industrial bus voltage with microcontroller ADC input scaled via resistor divider. IC Role / Device Role / Timing Role: Zener acts as precision shunt reference to clamp divider output at 75 V, preventing ADC overvoltage during surges. Use Value: Ensures ADC safety and measurement continuity during 100 µs transients up to 40 W, avoiding system reset or sensor damage. |
Use Scenario: Providing stable 75 V reference for high-voltage battery cell stack monitoring circuitry. IC Role / Device Role / Timing Role: Functions as primary voltage reference for comparator-based overvoltage detection thresholds. Use Value: Delivers ±5 % tolerance and <50 Ω dynamic impedance, enabling accurate 1% threshold setting across temperature. |
| ESD Protection Clamping | Low-Power Voltage Regulation |
|
Use Scenario: Protecting RS-485 transceiver inputs against ±2 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Shunt clamp activated during fast transients, diverting surge current away from sensitive IC pins. Use Value: Responds within nanoseconds and absorbs 40 W peak energy, limiting clamped voltage to ≤79 V reliably. |
Use Scenario: Regulating bias voltage for op-amp high-side current sense amplifier in 72 V solar charge controller. IC Role / Device Role / Timing Role: Provides stable 75 V local supply rail from unregulated intermediate stage. Use Value: Maintains regulation within ±5 % over 0–200 mA load range while dissipating ≤300 mW continuously. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B75,115 | Same 75 V nominal, ±5 % tolerance, but SOD323 package with 250 mW Ptot rating | Limited to lower continuous power; unsuitable for sustained 300 mW loads | Select when thermal budget is tighter and peak surge duty is infrequent |
| 1N4744A | 75 V, ±5 %, but DO-41 through-hole package, 1 W Ptot, higher rdiff (35 Ω typ) | Requires PCB real estate and wave soldering; not suitable for automated SMT assembly | Choose only for legacy through-hole designs or where higher continuous power is mandatory |
Compared with BZX384-B75 and 1N4744A, MM3Z75VT1GX uniquely balances ultra-compact SOD323 packaging, 300 mW continuous rating, and 40 W surge capability-making it optimal for modern high-density, low-power industrial and telecom systems requiring both size efficiency and transient robustness.
Availability
MM3Z75VT1GX is available at Aetrix Electronics and suitable for power supply rail monitoring, ADC reference stabilization, ESD protection clamping, and low-power voltage regulation requiring stable component supply in high-volume industrial and telecom production.
Supply support for MM3Z75VT1GX 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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in consumer, industrial, and automotive applications.
MM3Z75VT1GX belongs to the MM3Z series of general-purpose Zener diodes, engineered for precision voltage regulation and transient suppression in space-constrained, low-power SMT designs.
FAQ
What is the maximum continuous reverse current this Zener can handle at 75 V?
The MM3Z75VT1GX is rated for 300 mW total power dissipation at 25 °C ambient. At 75 V, this corresponds to a maximum continuous reverse current of 4 mA (300 mW ÷ 75 V). Exceeding this requires derating per thermal resistance data (415 K/W) and board layout considerations.
Can this device be used in series or parallel configurations for higher voltage or current handling?
Series connection is feasible for higher voltage clamping but introduces mismatch risks due to tolerance and temperature coefficient variations. Parallel use is strongly discouraged-Zener dynamic impedance differences cause current imbalance and potential thermal runaway. Use single-device implementation per design.
How does the 50 Ω differential resistance affect regulation accuracy in a 10 mA load application?
With 50 Ω rdiff, a 1 mA change in Zener current causes ~50 mV output shift. In a 10 mA load scenario where current splits between load and Zener, a ±1 mA Zener current variation results in ±50 mV regulation error-critical for sub-1% accuracy designs and necessitating sufficient Zener bias margin.
Is the SOD323 package compatible with standard reflow profiles for lead-free soldering?
Yes-the SOD323 footprint matches IPC-7351B standards. Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles, including peak temperatures up to 260 °C for ≤30 seconds. Recommended solder land dimensions are 0.6 × 1.15 mm per pad with 0.5 mm spacing.
MM3Z75VT1GX 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):
- 75 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 255 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 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
MM3Z75VT1GX FAQ
1.How can I place an order for MM3Z75VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z75VT1GX 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 MM3Z75VT1GX reliable?
The price and inventory of MM3Z75VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z75VT1GX is usually 5 days.
3.What payment methods are accepted for MM3Z75VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z75VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z75VT1GX?
MM3Z75VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z75VT1GX 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 MM3Z75VT1GX?
For technical support, including MM3Z75VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z75VT1GX requirements.
6.How does Aetrix verify that MM3Z75VT1GX is sourced from the original manufacturer or authorized distributors?
All MM3Z75VT1GX 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 MM3Z75VT1GX meets industry standards.
7.What is the process for return or replacement of MM3Z75VT1GX?
All MM3Z75VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z75VT1GX, 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 MM3Z75VT1GX part is unused and in its original packaging.
Return procedure for MM3Z75VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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