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onsemi MM3Z47VC
- Part No.:
- MM3Z47VC
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
MM3Z47VC.pdf
- Description:
- DIODE ZENER 47V 200MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:11,990
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Product details
Overview
MM3Z47VC from onsemi is a 47 V ±5% tolerance Zener diode in SOD−323FL package, rated for 200 mW power dissipation, with 160 Ω zener impedance at 2 mA test current and 0.045 µA reverse leakage at 33 V. It provides precision voltage regulation in low-power reference and protection circuits.
For engineers reviewing the MM3Z47VC datasheet, pinout, applications, or equivalent options, key selection criteria include its 47 V nominal zener voltage, ±5% tolerance, 200 mW power rating, SOD−323FL footprint compatibility, and low leakage performance at rated VR.
Technical Context
This device operates as a two-terminal voltage reference using controlled reverse-biased avalanche breakdown. Its zener voltage is specified at IZT = 2 mA with typical impedance of 160 Ω and maximum 353 Ω at IZK = 0.5 mA.
Thermal resistance is 595 °C/W (junction-to-ambient, PCB-mounted), limiting continuous power handling under ambient conditions. The device is Pb-free, RoHS-compliant, and features matte tin (Sn) finish for solderability and reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.65 V (min) to 49.35 V (max) at IZT = 2 mA - defines stable regulation range under standard test condition |
| Power Dissipation (PD) | 200 mW - maximum continuous power before thermal derating or junction damage |
| Zener Impedance (ZZT) | 160 Ω (max) at IZT = 2 mA - indicates regulation stiffness; lower values improve load regulation |
| Reverse Leakage (IR) | 0.045 µA max at VR = 33 V - ensures minimal standby current in high-impedance bias networks |
| Forward Voltage (VF) | 1.0 V max at IF = 10 mA - supports use as clamping diode in bidirectional protection schemes |
| Package | SOD−323FL (Case 477AB) - 1.7 mm × 1.25 mm surface-mount outline with cathode marking |
| Junction Temperature | 150 °C max - sets upper thermal limit for reliable long-term operation |
Pinout & Package
SOD−323FL is a 2-pin ultra-small flat-lead plastic package with anode (pin 1) and cathode (pin 2) terminals. Cathode is marked by a band on the package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Current entry terminal in forward bias; connected to lower-potential node in Zener mode | Must be held at ≤ (VZ − 1.0 V) during forward conduction; serves as reference ground return in shunt regulator |
| 2 (Cathode) | Current exit terminal in forward bias; connected to higher-potential node in Zener mode | Provides regulated output voltage node; marking band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables predictable regulation without post-production trimming in cost-sensitive consumer and industrial references |
| 200 mW power rating | Supports stable operation in space-constrained designs where heat sinking is impractical |
| SOD−323FL footprint | Matches industry-standard 0805-equivalent land pattern for automated assembly and board density optimization |
| Pb-free and RoHS-compliant | Meets global environmental compliance requirements for commercial and industrial end equipment |
| Matte tin (Sn) finish | Ensures consistent solder wetting and intermetallic formation during reflow, reducing voiding risk |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing bias voltage for analog front-end op-amps in temperature or pressure transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference providing 47 V rail for high-side current sensing amplifier supply. Use Value: Tight ±5% VZ tolerance ensures consistent gain calibration across production batches without per-unit adjustment. |
Use Scenario: Clamping transient surges on VBUS line during hot-plug events in USB 2.0 peripherals. IC Role / Device Role / Timing Role: Bidirectional overvoltage protector leveraging forward conduction (VF ≤ 1.0 V) and reverse Zener action (VZ = 47 V). Use Value: Low 0.045 µA leakage at 33 V prevents false triggering while maintaining fast response to >47 V transients. |
| Programmable Logic Controller Input Protection | Low-Power IoT Node Reference |
Use Scenario: Protecting 24 V DC digital input channels against field-wiring faults and ESD. IC Role / Device Role / Timing Role: Standby-mode voltage clamp absorbing energy from inductive kickback or lightning-induced surges. Use Value: 200 mW rating allows sustained clamping without thermal runaway during repeated 100 ns/1 kV pulses. |
Use Scenario: Generating stable reference for ADC sampling in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Precision shunt reference supplying regulated voltage to voltage divider networks feeding SAR ADC inputs. Use Value: 160 Ω ZZT minimizes output voltage shift under varying load currents, preserving measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C47 (Vishay) | DO-35 through-hole package; 500 mW rating; ±5% tolerance; 100 Ω ZZT at 5 mA | Requires PCB hole drilling and wave soldering; higher power enables higher current regulation but larger footprint | Select when legacy through-hole assembly or higher power margin is required; not drop-in compatible with SOD−323FL layout |
| MMSZ47ET1G (onsemi) | SOD-123 package; same 47 V ±5%; 500 mW rating; 100 Ω ZZT at 5 mA; identical RoHS/Pb-free status | Larger 2.9 mm × 1.8 mm footprint; higher thermal mass improves power handling but reduces board density | Choose for improved thermal performance in thermally demanding environments; requires land pattern revision |
Compared with MM3Z47VC, BZX55C47 offers higher power and lower impedance but demands through-hole assembly, while MMSZ47ET1G delivers better thermal capability in a larger SMD package-both require layout changes and are not pin-compatible replacements.
Availability
MM3Z47VC is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and programmable logic controller input protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for MM3Z47VC 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM3Z series is designed for compact, high-reliability voltage reference and protection in space-constrained portable and industrial electronics, emphasizing tight tolerance, low leakage, and standardized SMD packaging.
FAQ
What is the zener voltage tolerance of MM3Z47VC?
The MM3Z47VC has a nominal zener voltage of 47 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 44.65 V and 49.35 V when tested at IZT = 2 mA. This tolerance is confirmed in the Electrical Characteristics table of the official onsemi datasheet (Rev. 3, August 2023) and applies across the full operating temperature range.
What package type does MM3Z47VC use?
MM3Z47VC uses the SOD−323FL package (Case 477AB), a 2-pin ultra-small surface-mount outline measuring 1.7 mm × 1.25 mm with a 0.95 mm height. It features a cathode band marking and matte tin (Sn) finish, and is documented in the Mechanical Case Outline section of the onsemi datasheet.
What is the maximum power dissipation rating for MM3Z47VC?
The MM3Z47VC is rated for a maximum power dissipation of 200 mW at 25 °C ambient temperature. This value is specified in the Absolute Maximum Ratings table and assumes mounting on a PCB with minimum land pad; derating is required above 25 °C per the RJA = 595 °C/W thermal resistance.
How much reverse leakage current does MM3Z47VC exhibit at 33 V?
At VR = 33 V, the MM3Z47VC exhibits a maximum reverse leakage current (IR) of 0.045 µA, as specified in the Electrical Characteristics table. This low leakage supports high-impedance bias networks and minimizes standby power loss in battery-operated systems.
Is MM3Z47VC RoHS-compliant and lead-free?
Yes, MM3Z47VC is Pb-free and RoHS-compliant, as explicitly stated in the Features section of the onsemi datasheet. It carries matte tin (Sn) plating and conforms to Directive 2011/65/EU, making it suitable for environmentally regulated commercial and industrial applications.
MM3Z47VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 160 Ohms
- Current - Reverse Leakage @ Vr:
- 45 nA @ 33 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
MM3Z47VC FAQ
1.How can I place an order for MM3Z47VC through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z47VC 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 MM3Z47VC reliable?
The price and inventory of MM3Z47VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z47VC is usually 5 days.
3.What payment methods are accepted for MM3Z47VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z47VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z47VC?
MM3Z47VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z47VC 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 MM3Z47VC?
For technical support, including MM3Z47VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z47VC requirements.
6.How does Aetrix verify that MM3Z47VC is sourced from the original manufacturer or authorized distributors?
All MM3Z47VC 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 MM3Z47VC meets industry standards.
7.What is the process for return or replacement of MM3Z47VC?
All MM3Z47VC units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z47VC, 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 MM3Z47VC part is unused and in its original packaging.
Return procedure for MM3Z47VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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