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onsemi MM3Z75VT1G
- Part No.:
- MM3Z75VT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z75VT1G.pdf
- Description:
- DIODE ZENER 75V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:10,488
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Product details
Overview
MM3Z75VT1G from onsemi is a 75 V ±3% tolerance Zener diode in SOD−323 package, rated for 300 mW steady-state power dissipation at 25°C, with 255 Ω maximum dynamic impedance at 2 mA test current and 0.05 μA reverse leakage at 52.5 V. It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM3Z75VT1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, ESD robustness (Class 3, >16 kV HBM), and real-world use cases in voltage reference and overvoltage clamp circuits.
Technical Context
The MM3Z75VT1G operates as a two-terminal voltage reference device, conducting in reverse breakdown to maintain stable output voltage across varying load currents. Its Zener voltage exhibits +0.4 mV/°C temperature coefficient and is specified at 2 mA test current (IZT), with low 35 pF capacitance at 0 V bias enabling high-frequency noise suppression.
Thermal design requires attention: junction-to-ambient thermal resistance is 416°C/W on FR-4 board, and power must be derated linearly above 25°C at 2.4 mW/°C. The device supports reflow soldering up to 260°C for 10 seconds and meets AEC-Q101 for automotive-grade reliability when ordered as SZMM3Z75VT1G.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 70 V min / 75 V nominal / 79 V max @ IZT = 2 mA - defines clamping threshold with ±3% tolerance at standard test condition |
| Power Dissipation (PD) | 300 mW @ TA = 25°C - sets maximum continuous power handling on standard FR-4 PCB; derates to zero at ~150°C ambient |
| Zener Impedance (ZZT) | 255 Ω max @ IZT = 2 mA - determines voltage regulation stability under small-signal AC variations |
| Reverse Leakage (IR) | 0.05 μA max @ VR = 52.5 V - ensures minimal standby current in high-impedance bias networks |
| Capacitance (C) | 35 pF @ VR = 0 V, f = 1 MHz - enables effective RF bypass and transient filtering without parasitic resonance issues |
| ESD Rating | Class 3 (>16 kV) per HBM - allows direct integration into handheld interfaces without external ESD protection |
| Package | SOD−323 (Case 477) - 1.7 mm × 1.25 mm × 0.9 mm footprint ideal for ultra-dense PCB layouts |
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; Pb-free plating (Sn only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased Zener terminal | Connected to regulated node; voltage referenced to anode; polarity band identifies this terminal |
| 2 (Anode) | Reference ground/reference return | Typically tied to system ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| High-Voltage Zener Regulation | Stable 75 V reference with tight ±3% tolerance and +0.4 mV/°C TC - suitable for precision overvoltage detection above 50 V |
| Ultra-Small Footprint | SOD−323 package occupies only 2.125 mm² area - enables placement in tight spaces such as smartphone camera modules or wearables |
| Low-Leakage Clamping | 0.05 μA max leakage at 70% of VZ - preserves battery life in always-on monitoring circuits |
| Robust ESD Immunity | Class 3 HBM rating (>16 kV) - eliminates need for discrete ESD diodes in consumer interface lines |
| Automotive-Qualified Option | SZMM3Z75VT1G variant available with AEC-Q101 qualification and PPAP capability - supports Tier-1 automotive subsystems |
Applications
| Portable Power Management | Industrial Sensor Reference |
|---|---|
|
Use Scenario: Voltage clamping in Li-ion battery protection IC input stages operating up to 80 V. IC Role / Device Role / Timing Role: Zener clamp protecting comparator inputs from transient overvoltage during hot-plug events. Use Value: Prevents latch-up in 3.3 V supervisor ICs while maintaining <0.05 μA quiescent current draw. |
Use Scenario: Stable reference for 24 V industrial pressure transducer signal conditioning. IC Role / Device Role / Timing Role: Provides fixed 75 V reference for ratiometric ADC excitation in isolated analog front-ends. Use Value: Enables ±0.5% full-scale accuracy over −40°C to +85°C due to predictable TC and low dynamic impedance. |
| Automotive Body Control | Medical Instrumentation |
|
Use Scenario: Overvoltage protection on LIN bus transceiver supply rails exposed to load dump pulses. IC Role / Device Role / Timing Role: Fast-acting shunt regulator clamping 12 V rail spikes to safe levels before they reach sensitive PHY ICs. Use Value: Survives 100 ms pulses up to 75 V with no parameter shift, validated per AEC-Q101 for SZ variant. |
Use Scenario: Precision voltage reference in portable ECG amplifier bias networks. IC Role / Device Role / Timing Role: Sets common-mode voltage for instrumentation amplifiers requiring ultra-low leakage and stable DC offset. Use Value: Delivers <35 pF capacitance and <0.05 μA leakage - minimizes signal distortion and baseline drift in sub-mV biopotential measurements. |
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 Zener voltage but 300 mW rating at 25°C, higher 300 Ω ZZT @ 5 mA, 50 pF capacitance | Higher dynamic impedance limits use in precision references; larger capacitance affects high-frequency response | Select when cost sensitivity outweighs regulation accuracy and RF performance requirements |
| MMSZ5265B-TP | 75 V nominal, 500 mW rating, 150 Ω ZZT @ 10 mA, 40 pF capacitance, SOD-123 package (2.7 mm × 1.6 mm) | Larger footprint and higher power enable higher surge tolerance but reduce layout density | Prefer where board space permits and higher pulse energy handling is required beyond steady-state 300 mW |
Compared with BZX384-B75,115 and MMSZ5265B-TP, the MM3Z75VT1G offers superior space efficiency (SOD−323), lowest leakage (0.05 μA), and best high-frequency performance (35 pF), making it optimal for miniaturized, low-power, and noise-sensitive designs despite its tighter Zener tolerance control.
Availability
MM3Z75VT1G is available at Aetrix Electronics and suitable for portable power management, industrial sensor reference, automotive body control, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MM3Z75VT1G 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 specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The MM3Z75VT1G belongs to the MM3ZxxxT1G Zener regulator family, designed specifically for compact, high-reliability voltage reference and overvoltage protection in space-constrained portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of MM3Z75VT1G?
The MM3Z75VT1G has a Zener voltage range of 70 V (minimum) to 79 V (maximum) at 2 mA test current, corresponding to a nominal 75 V with ±3% tolerance. This specification is measured at 25°C ambient temperature and applies to all units in the production lot per the official onsemi datasheet Rev. 11.
Can MM3Z75VT1G be used in automotive applications?
Yes - the SZMM3Z75VT1G variant is AEC-Q101 qualified and PPAP capable, supporting automotive body electronics and infotainment systems. The standard MM3Z75VT1G is not automotive-qualified, but shares identical electrical and mechanical specifications except for process controls and traceability documentation.
What is the maximum allowable junction temperature for MM3Z75VT1G?
The MM3Z75VT1G has a junction and storage temperature range of −65°C to +150°C. At ambient temperatures above 25°C, power must be derated linearly at 2.4 mW/°C; full 300 mW operation is only guaranteed up to 25°C ambient on FR-4 board with 1 cm² copper pad.
How does the MM3Z75VT1G perform under high-frequency conditions?
The MM3Z75VT1G exhibits 35 pF typical capacitance at 0 V bias and 1 MHz, enabling effective high-frequency noise suppression. Its low dynamic impedance (255 Ω max at 2 mA) and fast response make it suitable for decoupling and RF bypass in DC-DC converter feedback paths and sensor signal chains.
Is MM3Z75VT1G RoHS compliant and lead-free?
Yes - MM3Z75VT1G is a Pb-free device with Sn-only or Pb-Sn plating per onsemi's compliance documentation. It meets RoHS Directive 2011/65/EU and carries the "Pb-Free" marking on the SOD−323 package body, confirmed in the official datasheet's Mechanical Characteristics section.
MM3Z75VT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 75 V
- Tolerance:
- ±6%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 255 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
MM3Z75VT1G FAQ
1.How can I place an order for MM3Z75VT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z75VT1G 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 MM3Z75VT1G reliable?
The price and inventory of MM3Z75VT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z75VT1G is usually 5 days.
3.What payment methods are accepted for MM3Z75VT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z75VT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z75VT1G?
MM3Z75VT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z75VT1G 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 MM3Z75VT1G?
For technical support, including MM3Z75VT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z75VT1G requirements.
6.How does Aetrix verify that MM3Z75VT1G is sourced from the original manufacturer or authorized distributors?
All MM3Z75VT1G 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 MM3Z75VT1G meets industry standards.
7.What is the process for return or replacement of MM3Z75VT1G?
All MM3Z75VT1G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z75VT1G, 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 MM3Z75VT1G part is unused and in its original packaging.
Return procedure for MM3Z75VT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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