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onsemi MM3Z56VT1G
- Part No.:
- MM3Z56VT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z56VT1G.pdf
- Description:
- DIODE ZENER 56V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,189
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Product details
Overview
MM3Z56VT1G from onsemi is a 56 V ±5% Zener voltage regulator diode in SOD−323 package, rated for 300 mW steady-state power dissipation at 25°C, with 200 Ω maximum Zener impedance at 2 mA test current and 0.05 µA reverse leakage at 39.2 V. It provides precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the MM3Z56VT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its 56 V nominal Zener voltage, low 0.9 mm body height, Class 3 ESD rating (>16 kV HBM), AEC−Q101 qualification, and Pb−free SOD−323 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage regulation under varying load and temperature conditions. Its 56 V nominal Zener voltage is specified at IZT = 2 mA, with a temperature coefficient of +0.4 mV/°C and typical capacitance of 40 pF at 0 V bias and 1 MHz.
The device features low thermal resistance (RJA = 416 °C/W) and operates across −65°C to +150°C junction temperature range. It delivers predictable regulation performance with 52 V minimum and 60 V maximum Zener voltage tolerance, validated per JEDEC standards for surface-mount reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 52 V min / 56 V nom / 60 V max @ IZT = 2 mA - defines regulated output voltage window under standard test conditions |
| Zener Impedance (ZZT) | 200 Ω max @ IZT = 2 mA - indicates dynamic resistance affecting regulation stability under transient load changes |
| Power Dissipation (PD) | 300 mW @ TA = 25°C - sets maximum continuous power handling on FR-4 board before thermal derating applies |
| Reverse Leakage (IR) | 0.05 µA max @ VR = 39.2 V - ensures minimal standby current in voltage-clamp or reference applications |
| Capacitance (C) | 40 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| ESD Rating | Class 3 (>16 kV) per HBM - enables robust handling during assembly and operation in electrostatic-prone environments |
| Package | SOD−323 (Case 477) - 1.7 mm × 1.25 mm × 0.9 mm footprint ideal for ultra-compact consumer and automotive PCBs |
Pinout & Package
SOD−323 surface-mount package with cathode indicated by polarity band; total weight 4.507 mg/unit; UL 94 V−0 flammability rating; mountable in any orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; reverse-biased to conduct and clamp voltage at VZ |
| 2 (Anode) | Reference ground terminal | Typically tied to system ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Pb−free construction | Complies with RoHS and ELV directives; Sn-only or Pb−Sn plating compatible with lead-free reflow profiles |
| AEC−Q101 qualification | Validated for automotive applications including infotainment and body control modules requiring extended temperature and reliability compliance |
| Low-profile packaging | 0.9 mm max height enables stacking under shields or placement beneath connectors in slim handheld devices |
| High ESD immunity | Class 3 HBM rating eliminates need for external ESD protection in many portable interface circuits |
| Stable temperature coefficient | +0.4 mV/°C enables predictable drift compensation in precision reference designs across industrial temperature range |
Applications
| Portable Power Management | Automotive Sensor Reference |
|---|---|
Use Scenario: Voltage clamping in USB-powered IoT sensors with Li-ion battery input up to 5.5 V. IC Role / Device Role / Timing Role: Zener diode providing overvoltage protection for MCU analog supply rail. Use Value: Prevents damage to 3.3 V ADC inputs during transient surges while occupying <1.8 mm² PCB area. |
Use Scenario: Stable 56 V reference for current-sense amplifier biasing in 48 V mild-hybrid vehicle DC/DC converters. IC Role / Device Role / Timing Role: Precision voltage reference enabling accurate high-side current measurement. Use Value: Maintains ±5% regulation across −40°C to +125°C ambient, supporting AEC−Q101-compliant design validation. |
| High-Density PC Board Clamping | Industrial PLC Input Protection |
Use Scenario: Signal line protection on PCIe add-in cards where board real estate is constrained by connector placement. IC Role / Device Role / Timing Role: Transient voltage suppressor for 3.3 V data lanes against ESD and coupling noise. Use Value: Delivers 16 kV HBM ESD immunity without increasing trace length or compromising signal integrity. |
Use Scenario: Overvoltage protection on 24 V digital input channels of programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Clamp diode limiting input voltage to safe levels for optocoupler driver circuitry. Use Value: Withstands repeated 300 mW surges per JEDEC JESD22-A108, extending field-replaceable module lifetime. |
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-B56,115 | 56 V ±5%, 300 mW, SOD-323, but 400 Ω ZZT @ 5 mA - higher dynamic impedance than MM3Z56VT1G's 200 Ω @ 2 mA | Less stable regulation under fast load transients; suitable only where tighter voltage tolerance is not required | Prefer MM3Z56VT1G when low-impedance clamping or low-current biasing (e.g., 2 mA reference) is critical |
| MMSZ5256B-TP | 56 V ±5%, 500 mW, SOD-123 - larger 3.7 mm × 1.6 mm footprint and higher power, but no AEC−Q101 qualification | Acceptable for industrial non-automotive use; incompatible with space-constrained or automotive-qualified designs | Choose MM3Z56VT1G for automotive-grade reliability and ultra-compact layout; select MMSZ5256B-TP only if higher power margin is needed |
Compared with BZX384-B56,115 and MMSZ5256B-TP, MM3Z56VT1G uniquely combines AEC−Q101 qualification, 200 Ω low-ZZT regulation at 2 mA, and 0.9 mm height in SOD−323 - making it optimal for automotive and portable systems demanding both miniaturization and robustness.
Availability
MM3Z56VT1G is available at Aetrix Electronics and suitable for portable power management, automotive sensor reference, high-density PC board clamping, and industrial PLC input protection requiring stable component supply and full traceability.
Supply support for MM3Z56VT1G 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and intelligent edge applications.
MM3Z56VT1G belongs to the MM3ZxxxT1G Zener regulator series designed specifically for space-constrained, high-reliability voltage reference and overvoltage protection in portable, automotive, and industrial systems.
FAQ
What is the Zener voltage tolerance of MM3Z56VT1G?
The MM3Z56VT1G has a Zener voltage specification of 52 V minimum, 56 V nominal, and 60 V maximum at IZT = 2 mA and TA = 25°C - representing a ±5% tolerance around the nominal value. This tolerance remains valid across the full operating temperature range of −65°C to +150°C, as confirmed in the official onsemi datasheet revision 11.
Is MM3Z56VT1G qualified for automotive applications?
Yes, MM3Z56VT1G is AEC−Q101 qualified and PPAP capable, as explicitly stated in the "Specification Features" section of the onsemi datasheet. It meets automotive reliability requirements including temperature cycling, humidity testing, and mechanical shock - making it suitable for use in infotainment, body control, and ADAS subsystems.
What is the maximum power dissipation for MM3Z56VT1G on a standard PCB?
MM3Z56VT1G is rated for 300 mW steady-state power dissipation on an FR-4 board with a 1 cm² copper pad at TA = 25°C. Above 25°C, it must be derated at 2.4 mW/°C, reaching zero power capability at approximately 138°C ambient - consistent with its RJA = 416 °C/W thermal resistance.
Does MM3Z56VT1G have Pb−free construction?
Yes, MM3Z56VT1G is a Pb−free device, as confirmed by the "Pb−Free Devices" footnote and "(Pb−Free)" designation in the ordering information table. Its leads are plated with Sn-only or Pb−Sn, fully compliant with RoHS Directive 2011/65/EU and JEDEC JS709A standards.
What is the reverse leakage current specification for MM3Z56VT1G?
The MM3Z56VT1G specifies a maximum reverse leakage current (IR) of 0.05 µA at VR = 39.2 V - a value derived from the 70% of nominal Zener voltage (0.7 × 56 V). This low leakage supports energy-sensitive applications such as battery-backed sensors and always-on monitoring circuits.
MM3Z56VT1G 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):
- 56 V
- Tolerance:
- ±7%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 39.2 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
MM3Z56VT1G FAQ
1.How can I place an order for MM3Z56VT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z56VT1G 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 MM3Z56VT1G reliable?
The price and inventory of MM3Z56VT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z56VT1G is usually 5 days.
3.What payment methods are accepted for MM3Z56VT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z56VT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z56VT1G?
MM3Z56VT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z56VT1G 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 MM3Z56VT1G?
For technical support, including MM3Z56VT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z56VT1G requirements.
6.How does Aetrix verify that MM3Z56VT1G is sourced from the original manufacturer or authorized distributors?
All MM3Z56VT1G 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 MM3Z56VT1G meets industry standards.
7.What is the process for return or replacement of MM3Z56VT1G?
All MM3Z56VT1G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z56VT1G, 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 MM3Z56VT1G part is unused and in its original packaging.
Return procedure for MM3Z56VT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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