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Nexperia USA Inc. PZU4.7B2A,115
- Part No.:
- PZU4.7B2A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU4.7B2A,115.pdf
- Description:
- DIODE ZENER 4.7V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
PZU4.7B2A,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 4.7 V nominal working voltage at 5 mA, with 800 Ω max differential resistance, 2 µA max reverse current at 0.5 mA test condition, and -1.4 mV/K temperature coefficient. It delivers stable reference voltage in low-power analog circuits and power supply feedback paths.
For engineers reviewing the PZU4.7B2A,115 datasheet, PZU4.7B2A,115 pinout, PZU4.7B2A,115 application, or PZU4.7B2A,115 equivalent, key selection criteria include tight voltage tolerance, low leakage at sub-mA bias, hard breakdown knee, and thermal resistance of 255 K/W to solder point - critical for precision regulation in space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 4.7 V regulation voltage at IZ = 5 mA, exhibiting a hard breakdown knee and very low dynamic impedance below 800 Ω. Its temperature coefficient of -1.4 mV/K indicates predictable negative drift over temperature, enabling stable reference generation across industrial ambient ranges.
The device supports non-repetitive surge handling up to 40 W (100 µs square wave), while maintaining 320 mW total DC power dissipation on standard FR4 PCB. Its SOD323 footprint enables high-density surface-mount placement without compromising thermal performance via optimized cathode pad design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 4.7 V at IZ = 5 mA - precise regulation point for 5 V rail monitoring and feedback loops |
| Voltage Tolerance | ±2 % (B2 series) - ensures consistent reference accuracy across production batches |
| Differential Resistance | ≤ 800 Ω at IZ = 5 mA - low impedance maintains regulation stability under load variation |
| Reverse Current | ≤ 2 µA at VR = 4.01 V (0.5 mA test) - minimal leakage preserves battery life in always-on circuits |
| Thermal Resistance | 255 K/W junction-to-solder point - enables reliable operation with moderate copper pour on FR4 |
| Non-repetitive Surge | 40 W (100 µs square wave) - withstands transient overvoltage events without degradation |
| Junction Temperature | 150 °C max - supports operation in extended-temperature industrial environments |
Pinout & Package
SOD323 (SC-76) plastic surface-mount package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode | Connected to ground or current-limiting resistor; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, predictable turn-on at 4.7 V - reduces regulation error in low-current bias conditions |
| Very low leakage current | 2 µA max at 0.5 mA test - minimizes quiescent power loss in battery-powered sensor nodes |
| Optimized thermal path | 255 K/W Rth(j-sp) - allows direct heat transfer from junction to solder joint, improving long-term reliability |
| Tight voltage tolerance | ±2 % (B2 grade) - eliminates need for post-assembly trimming in precision voltage reference designs |
| Small outline package | SOD323 footprint - saves >60 % board area vs. DO-35, enabling miniaturized power management modules |
Applications
| Power Supply Feedback | Overvoltage Protection |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise 4.7 V reference to TL431 shunt regulator input, setting primary-side feedback threshold. Use Value: ±2 % tolerance ensures <±1 % output voltage deviation across line/load/temperature, meeting Class II AC-DC adapter specs. |
Use Scenario: Clamping transient surges on 5 V USB-powered peripheral lines. IC Role / Device Role / Timing Role: Acts as fast-acting shunt clamp between VBUS and GND, diverting ESD or inductive kick energy. Use Value: 40 W non-repetitive surge rating absorbs 8 kV contact ESD pulses per IEC 61000-4-2 without failure. |
| Reference Voltage Source | Signal Level Shifting |
|
Use Scenario: Generating stable bias for op-amp comparators in automotive cabin temperature sensors. IC Role / Device Role / Timing Role: Supplies 4.7 V reference to comparator input, enabling accurate threshold detection against thermistor divider output. Use Value: -1.4 mV/K tempco allows predictable compensation; 2 µA leakage avoids loading high-impedance sensor dividers. |
Use Scenario: Translating 3.3 V logic signals to 4.7 V interface levels for legacy industrial I/O modules. IC Role / Device Role / Timing Role: Configured in forward-bias mode (anode to 3.3 V, cathode to 4.7 V rail) to lift signal swing. Use Value: 1.1 V forward drop at 100 mA enables clean level shift with <10 ns propagation delay and no active components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B4V7,115 | Same SOD323 package, ±2 % tolerance, but higher 1000 Ω max rdif and 3 µA IR at 0.5 mA | Less stable regulation under varying load; unsuitable for precision feedback loops | Acceptable only where cost is prioritized over regulation accuracy and leakage |
| MMSZ4702T1G | SOD123 package (larger), ±5 % tolerance, 1000 Ω rdif, 5 µA IR - lower density and looser spec | Requires more PCB area; higher leakage limits use in ultra-low-power IoT nodes | Preferred only when legacy SOD123 footprint compatibility is mandatory |
Compared with BZX384-B4V7,115 and MMSZ4702T1G, PZU4.7B2A,115 offers superior regulation precision (±2 %), lower dynamic impedance (800 Ω vs. ≥1000 Ω), and half the leakage current - making it optimal for high-accuracy, low-power analog subsystems where board space and thermal performance are constrained.
Availability
PZU4.7B2A,115 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and reference voltage source applications requiring stable component supply, tight tolerance consistency, and SOD323 footprint compatibility.
Supply support for PZU4.7B2A,115 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in advanced packaging and automotive-qualified components.
PZUxBA series belongs to Nexperia's general-purpose Zener regulator product line, engineered for precision voltage reference and clamping in space-constrained consumer, industrial, and computing power systems.
FAQ
What is the maximum continuous power dissipation for PZU4.7B2A,115?
The total power dissipation is rated at 320 mW when mounted on an FR4 PCB with single-sided copper and standard footprint. This value assumes ambient temperature ≤25 °C; derating applies above that temperature per the thermal resistance curve in the datasheet.
How does the -1.4 mV/K temperature coefficient affect circuit performance?
A -1.4 mV/K coefficient means the Zener voltage decreases by 1.4 mV per Kelvin rise in junction temperature. At 4.7 V nominal, this yields ~0.03 %/°C drift - acceptable for industrial-grade references but requires compensation in metrology-grade designs.
Can PZU4.7B2A,115 be used in forward-bias applications?
Yes - its forward voltage is 1.1 V at 100 mA, making it suitable for low-drop level shifting or simple LED biasing. However, its primary design intent and characterization are for reverse-bias Zener regulation, not forward conduction reliability.
Is the SOD323 package compatible with standard reflow profiles?
Yes - Nexperia specifies full compatibility with JEDEC J-STD-020D reflow profiles. The device supports peak temperatures up to 260 °C for ≤30 seconds, with recommended solder land dimensions provided in Figure 10 of the datasheet.
PZU4.7B2A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PZU4.7B2A,115 FAQ
1.How can I place an order for PZU4.7B2A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU4.7B2A,115 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 PZU4.7B2A,115 reliable?
The price and inventory of PZU4.7B2A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU4.7B2A,115 is usually 5 days.
3.What payment methods are accepted for PZU4.7B2A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU4.7B2A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU4.7B2A,115?
PZU4.7B2A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU4.7B2A,115 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 PZU4.7B2A,115?
For technical support, including PZU4.7B2A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU4.7B2A,115 requirements.
6.How does Aetrix verify that PZU4.7B2A,115 is sourced from the original manufacturer or authorized distributors?
All PZU4.7B2A,115 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 PZU4.7B2A,115 meets industry standards.
7.What is the process for return or replacement of PZU4.7B2A,115?
All PZU4.7B2A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU4.7B2A,115, 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 PZU4.7B2A,115 part is unused and in its original packaging.
Return procedure for PZU4.7B2A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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