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onsemi MM3Z47VB
- Part No.:
- MM3Z47VB
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
MM3Z47VB.pdf
- Description:
- DIODE ZENER 47V 200MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:8,286
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Product details
Overview
MM3Z47VB from onsemi is a ±2% tolerance, 47 V Zener diode in SOD−323FL package, rated for 200 mW power dissipation, with 160 Ω maximum Zener impedance at 2 mA test current, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the MM3Z47VB datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy (46.06–47.94 V), low leakage current (≤45 nA at 33 V), thermal resistance (595 °C/W), and SOD−323FL footprint compatibility in space-constrained PCB designs.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable 47 V across its terminals under regulated current conditions. It exhibits a nominal Zener test current of 2 mA and supports operation from −65 °C to +150 °C junction temperature.
The MM3Z47VB uses a planar epitaxial construction with matte tin (Pb-free) termination, optimized for surface-mount reliability and thermal stability. Its Zener impedance is measured using 60-Hz AC superimposed on DC bias, per JEDEC JESD24 standard methodology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 46.06–47.94 V at IZT = 2 mA - defines precise clamping threshold for protection or reference |
| Power Dissipation (PD) | 200 mW - limits continuous safe operating power in ambient air without heatsinking |
| Zener Impedance (ZZT) | 160 Ω max at IZT = 2 mA - determines voltage regulation stiffness under load variation |
| Reverse Leakage (IR) | ≤45 nA at VR = 33 V - ensures minimal quiescent current in standby or high-impedance nodes |
| Junction Temperature (TJ) | −65 °C to +150 °C - enables use in automotive under-hood, industrial control, and extended-temperature environments |
| Package | SOD−323FL (Case 477AB) - 1.7 × 1.25 × 0.9 mm footprint ideal for compact portable electronics |
Pinout & Package
SOD−323FL is a two-terminal surface-mount package with cathode-marked anode-cathode orientation. The device has no active pins-only two solderable terminals: Anode (Terminal 1) and Cathode (Terminal 2), with cathode identified by a band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Forward conduction terminal / Reference ground node in shunt regulator | Connected to lower-potential side; carries forward current during normal bias or reverse leakage path |
| Cathode (Terminal 2) | Zener breakdown terminal / Regulated output node | Connected to higher-potential rail; maintains stable 47 V relative to anode when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tight regulation without post-production trimming in cost-sensitive consumer and industrial systems |
| Matte tin (Sn) Pb-free finish | Ensures RoHS compliance and reliable solderability with standard reflow profiles (J-STD-020) |
| Low thermal resistance (595 °C/W) | Supports stable voltage reference performance despite ambient temperature shifts up to 125 °C |
| Very small SOD−323FL footprint | Reduces board area by >50% vs. DO-35 or SOD-123, critical for wearables and IoT sensor nodes |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Stabilizing reference voltage for 24-bit sigma-delta ADC front-end in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing 47 V rail clamp and precision bias for op-amp gain stages. Use Value: Maintains <±0.5% full-scale error over −40 °C to +85 °C due to low tempco and tight VZ tolerance. |
Use Scenario: Overvoltage protection on USB-C CC line during 20 V PD negotiation to prevent controller latch-up. IC Role / Device Role / Timing Role: Fast-acting transient clamp limiting CC line to ≤47 V during fault events. Use Value: Responds within <10 ns to 1 kV/μs transients while drawing <45 nA leakage during normal 5 V operation. |
| Automotive Body Control Module (BCM) | Medical Infusion Pump Voltage Monitor |
Use Scenario: Regulating auxiliary 47 V supply for LIN bus transceiver bias in 12 V vehicle electrical architecture. IC Role / Device Role / Timing Role: Low-power Zener shunt regulator maintaining stable bias under battery voltage fluctuations (9–16 V). Use Value: Operates reliably across −40 °C to +125 °C ambient with no derating up to 150 °C junction temperature. |
Use Scenario: Monitoring high-voltage pump motor driver supply (42–48 V range) for fault detection in Class II medical equipment. IC Role / Device Role / Timing Role: Precision voltage threshold detector triggering shutdown if supply exceeds 47.94 V. Use Value: Delivers ±2% trip point accuracy without calibration, meeting IEC 60601-1 creepage and leakage requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B47 | Same 47 V nominal, ±2% tolerance, but SOD-323 package with 400 mW rating and higher ZZT (200 Ω) | Higher power handling suits higher-current regulation; less suitable for ultra-low-leakage designs | Select BZX384-B47 when >200 mW dissipation or higher surge current capability is required |
| MMSZ47ET1G | Same 47 V, ±2%, SOD-123 package; slightly higher leakage (≤100 nA at 33 V) and larger footprint (3.5 × 1.6 mm) | Lower thermal resistance (350 °C/W) improves long-term stability in thermally dense layouts | Choose MMSZ47ET1G where board space allows and improved thermal margin outweighs size penalty |
Compared with BZX384-B47 and MMSZ47ET1G, the MM3Z47VB offers the smallest footprint and lowest leakage among 47 V ±2% Zeners, making it optimal for miniaturized, low-quiescent-current applications where PCB area and standby power are constrained.
Availability
MM3Z47VB is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery protection, and automotive body control modules requiring stable component supply with full traceability and lifecycle management.
Supply support for MM3Z47VB 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM3Z series was designed specifically for high-accuracy, low-profile voltage regulation in space-constrained, high-reliability applications-emphasizing tight tolerance, low leakage, and robust thermal performance in miniature SMD packages.
FAQ
What is the Zener voltage tolerance of MM3Z47VB?
The MM3Z47VB has a guaranteed ±2% Zener voltage tolerance, meaning its breakdown voltage falls between 46.06 V and 47.94 V when tested at IZT = 2 mA and TA = 25 °C. This tight tolerance eliminates need for external trimming in precision reference designs and is confirmed per onsemi's Rev. 3 datasheet (August 2023).
What is the maximum power dissipation for MM3Z47VB?
The MM3Z47VB is rated for 200 mW maximum power dissipation at 25 °C ambient temperature. Derating is required above 25 °C per the thermal resistance value of 595 °C/W; for example, at 75 °C ambient, maximum allowable power drops to approximately 117 mW to maintain TJ ≤ 150 °C.
Does MM3Z47VB meet RoHS and lead-free requirements?
Yes, the MM3Z47VB features a matte tin (Sn) finish and is fully compliant with RoHS Directive 2011/65/EU and JEDEC JS709E. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), as verified in onsemi's official packaging documentation.
What is the reverse leakage current specification for MM3Z47VB?
The MM3Z47VB specifies a maximum reverse leakage current (IR) of 45 nA at VR = 33 V and TA = 25 °C. This ultra-low leakage supports high-impedance bias networks and battery-powered applications where standby current must remain below 100 nA.
Which package does MM3Z47VB use, and what are its dimensions?
The MM3Z47VB uses the SOD−323FL package (Case 477AB), measuring 1.7 mm × 1.25 mm × 0.9 mm with a 0.7 mm pitch. Its compact size and low profile make it suitable for high-density PCB layouts in portable electronics, as documented in onsemi's mechanical drawings (Issue A, 03 FEB 2023).
MM3Z47VB 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:
- ±2%
- 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
MM3Z47VB FAQ
1.How can I place an order for MM3Z47VB through Aetrix?
Please submit a Request for Quotation (RFQ) for MM3Z47VB 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 MM3Z47VB reliable?
The price and inventory of MM3Z47VB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM3Z47VB is usually 5 days.
3.What payment methods are accepted for MM3Z47VB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM3Z47VB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM3Z47VB?
MM3Z47VB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM3Z47VB 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 MM3Z47VB?
For technical support, including MM3Z47VB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM3Z47VB requirements.
6.How does Aetrix verify that MM3Z47VB is sourced from the original manufacturer or authorized distributors?
All MM3Z47VB 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 MM3Z47VB meets industry standards.
7.What is the process for return or replacement of MM3Z47VB?
All MM3Z47VB units undergo pre-shipment inspection (PSI). If there is an issue with MM3Z47VB, 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 MM3Z47VB part is unused and in its original packaging.
Return procedure for MM3Z47VB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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