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onsemi MM3Z47VT1G
- Part No.:
- MM3Z47VT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MM3Z47VT1G.pdf
- Description:
- DIODE ZENER 47V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:169,510
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Product details
Overview
MM3Z47VT1G from onsemi is a 47 V ±3% Zener diode in SOD-323 package, rated for 500 mW steady-state power dissipation and 170 Ω maximum dynamic impedance at 2 mA test current, designed for precision voltage regulation and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the MM3Z47VT1G datasheet, pinout, applications, or equivalent options, this device offers verified thermal performance (RJA = 250 °C/W with heat sink), −65 to +150 °C junction temperature range, and Class 3 ESD rating (>16 kV HBM), critical for battery-powered and high-density PCB designs.
Technical Context
This Zener diode operates in reverse breakdown mode with nominal Zener voltage of 47 V at IZT = 2 mA, exhibiting a temperature coefficient of +0.2 mV/°C and leakage current ≤0.05 μA at VR = 32.9 V. Its low capacitance (40 pF at 0 V, 1 MHz) supports stable regulation in RF-adjacent circuits.
The SOD-323 package enables surface-mount integration with 1.7 mm × 1.25 mm footprint and 0.9 mm height, while its Pb-free construction complies with RoHS and supports reflow soldering up to 260 °C for 10 seconds. Polarity is marked by cathode band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44 V min / 47 V nom / 50 V max @ IZT = 2 mA - defines regulation window for 47 V reference applications |
| Power Dissipation | 500 mW @ TA = 25 °C with 0.72 mm² pad + 1 in² copper heat sink - enables compact thermal design |
| Zener Impedance (ZZT) | 170 Ω max @ IZT = 2 mA - determines regulation stability under load transients |
| Leakage Current (IR) | ≤0.05 μA @ VR = 32.9 V - ensures minimal standby power loss in battery systems |
| Capacitance | 40 pF @ VR = 0 V, f = 1 MHz - limits signal coupling in high-frequency sensing paths |
| ESD Rating | Class 3 (>16 kV) per HBM - protects against handling-induced damage during assembly |
| Junction Temp Range | −65 °C to +150 °C - supports operation in automotive under-hood and industrial environments |
Pinout & Package
SOD-323 plastic surface-mount package (Case 477, Style 1), 1.70 mm × 1.25 mm × 0.85 mm body, cathode indicated by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes bias path for regulation current |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD-323 package | 0.9 mm height enables stacking under shields and routing in ultra-thin handheld PCBs |
| Pb-free and RoHS-compliant | Sn-only or Pb-Sn plating supports lead-free reflow without compromising solder joint reliability |
| High ESD robustness | Class 3 HBM rating eliminates need for external ESD protection in consumer interface circuits |
| Stable temperature coefficient | +0.2 mV/°C enables predictable drift compensation in temperature-critical voltage references |
| UL 94 V-0 flammability rating | Self-extinguishing epoxy meets safety requirements for enclosed medical and industrial enclosures |
Applications
| Smartphone Power Rail Protection | USB-C Port Overvoltage Clamp |
|---|---|
Use Scenario: Clamping transient surges on 5 V USB power lines during hot-plug events. IC Role / Device Role / Timing Role: Zener clamping element placed between VBUS and GND to shunt excess energy before it reaches PMIC inputs. Use Value: 47 V standoff prevents false triggering during normal 5 V operation while clamping >20 V transients within 10 ns response time. |
Use Scenario: Protecting USB-C controller I/O pins from ESD and cable-induced spikes. IC Role / Device Role / Timing Role: Low-capacitance (40 pF) Zener placed on CC1/CC2 lines to clamp to safe voltage without distorting 300 kHz communication signals. Use Value: Enables direct placement adjacent to connector with no signal integrity degradation or timing skew. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Reference |
Use Scenario: Providing stable 47 V bias for avalanche photodiode (APD) biasing in optical smoke detectors. IC Role / Device Role / Timing Role: Precision Zener reference supplying regulated high-voltage bias to APD anode with <±3% tolerance. Use Value: Maintains consistent photon detection gain across −40 °C to +105 °C ambient due to low tempco and wide TJ range. |
Use Scenario: Generating accurate 47 V reference for LIN bus transceiver supply monitoring in BCMs. IC Role / Device Role / Timing Role: Regulation element feeding comparator input that triggers fault reporting when main 12 V rail drops below threshold. Use Value: AEC-Q101 qualification ensures reliability under automotive vibration, thermal cycling, and load dump conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B47,115 | 47 V ±5%, 300 mW rating, SOD-323 package, 200 Ω ZZT @ 5 mA | Higher Zener impedance and wider voltage tolerance reduce regulation accuracy in precision references | Select when cost sensitivity outweighs tight voltage tolerance and low-impedance needs |
| MMSZ47ET1G | 47 V ±5%, 500 mW rating, SOD-123 package (2.7 mm × 1.6 mm), 170 Ω ZZT @ 2 mA | Larger footprint increases PCB area use but improves thermal margin on FR-4 without heat sink | Select when board layout allows larger package and higher thermal resistance is acceptable |
Compared with BZX384-B47,115 and MMSZ47ET1G, MM3Z47VT1G delivers tighter 44–50 V tolerance, lower 170 Ω impedance at 2 mA, and smallest SOD-323 footprint-making it optimal for miniaturized, high-accuracy voltage clamping where space and regulation stability are prioritized.
Availability
MM3Z47VT1G is available at Aetrix Electronics and suitable for smartphone power protection, USB-C interface clamping, and industrial sensor biasing requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MM3Z47VT1G 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications, with emphasis on reliability and sustainability.
The MM3ZxxxT1G series is part of onsemi's precision Zener regulator portfolio, engineered specifically for space-constrained, high-reliability voltage reference and overvoltage protection in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of MM3Z47VT1G?
The MM3Z47VT1G has a Zener voltage specification of 44 V minimum, 47 V nominal, and 50 V maximum at 2 mA test current, corresponding to a ±3% tolerance around the nominal value. This tight tolerance ensures consistent regulation performance across production lots and operating temperatures, making MM3Z47VT1G suitable for applications demanding precise voltage clamping such as sensor biasing and reference generation.
Can MM3Z47VT1G be used in automotive applications?
Yes, MM3Z47VT1G is AEC-Q101 qualified and PPAP capable, confirming its suitability for automotive applications including body control modules and infotainment power conditioning. Its −65 °C to +150 °C junction temperature range, Class 3 HBM ESD rating, and Pb-free construction meet stringent automotive reliability and compliance requirements-ensuring robust operation under thermal cycling, vibration, and electrical stress conditions encountered in vehicle systems.
What is the thermal resistance of MM3Z47VT1G on a standard PCB?
MM3Z47VT1G exhibits a junction-to-ambient thermal resistance (RJA) of 250 °C/W when mounted on an FR-4 board with a 0.72 mm² pad and 1 in² copper heat sink. Without the heat sink, RJA rises to 416 °C/W. These values directly determine allowable power dissipation at elevated ambient temperatures and must be applied in thermal derating calculations per Figure 7 of the datasheet to ensure reliable long-term operation of MM3Z47VT1G.
How does the capacitance of MM3Z47VT1G affect high-frequency circuit performance?
MM3Z47VT1G has a typical capacitance of 40 pF at 0 V bias and 1 MHz frequency. This low value minimizes signal coupling and phase shift in high-speed interfaces like USB-C CC lines or RF front-end bias networks. When placed near sensitive analog or digital nodes, MM3Z47VT1G avoids degrading signal integrity or introducing unintended filtering-unlike higher-capacitance Zeners that may attenuate fast edges or resonate with trace inductance.
Is MM3Z47VT1G compatible with lead-free reflow soldering processes?
Yes, MM3Z47VT1G is Pb-free and rated for peak reflow temperatures up to 260 °C for 10 seconds, fully compliant with IPC/JEDEC J-STD-020 moisture sensitivity and lead-free soldering standards. Its void-free transfer-molded plastic case and Sn-only or Pb-Sn plated leads ensure reliable wetting and intermetallic formation during standard reflow profiles-making MM3Z47VT1G suitable for high-volume automated assembly without solder joint defects or delamination risks.
MM3Z47VT1G 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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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
MM3Z47VT1G FAQ
1.How can I place an order for MM3Z47VT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z47VT1G 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 MM3Z47VT1G reliable?
The price and inventory of MM3Z47VT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z47VT1G is usually 5 days.
3.What payment methods are accepted for MM3Z47VT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z47VT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z47VT1G?
MM3Z47VT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z47VT1G 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 MM3Z47VT1G?
For technical support, including MM3Z47VT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z47VT1G requirements.
6.How does Aetrix verify that MM3Z47VT1G is sourced from the original manufacturer or authorized distributors?
All MM3Z47VT1G 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 MM3Z47VT1G meets industry standards.
7.What is the process for return or replacement of MM3Z47VT1G?
All MM3Z47VT1G units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z47VT1G, 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 MM3Z47VT1G part is unused and in its original packaging.
Return procedure for MM3Z47VT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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