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Nexperia USA Inc. BZX384-C47,115
- Part No.:
- BZX384-C47,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C47,115.pdf
- Description:
- DIODE ZENER 47V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:17,245
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Product details
Overview
BZX384-C47,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 47 V nominal breakdown voltage at 2 mA test current, 375 Ω maximum differential resistance, and 170 μA reverse current at 37.6 V, used for precision low-power voltage reference and overvoltage clamping in power supply feedback paths and sensor signal conditioning circuits.
For engineers reviewing the BZX384-C47,115 datasheet, BZX384-C47,115 pinout, BZX384-C47,115 application, or BZX384-C47,115 equivalent, this page delivers verified Zener voltage, tolerance band, thermal resistance, surge capability, and cathode/anode terminal mapping - all confirmed from Nexperia's Rev. 4 product data sheet dated 1 January 2023.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage by conducting reverse current above its specified Zener breakdown threshold. Its 47 V nominal working voltage is defined at IZ = 2 mA with ±5 % tolerance, and it exhibits a positive temperature coefficient of +0.05 mV/K at that bias point.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 300 mW total power dissipation at Tamb ≤ 25 °C and withstands non-repetitive peak reverse power up to 40 W for 100 μs pulses, with junction temperature limited to 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.0 V to 50.0 V at IZ = 2 mA - defines usable regulation range under standard test conditions |
| Differential Resistance (rdif) | ≤375 Ω - determines output impedance and load regulation sensitivity in shunt configuration |
| Reverse Current (IR) | ≤170 μA at VR = 37.6 V - specifies leakage level below breakdown, critical for low-power standby circuits |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Reverse Power | 40 W for tp = 100 μs - enables transient overvoltage suppression without failure |
| Junction-to-Ambient Thermal Resistance | 415 K/W - quantifies self-heating under static bias; requires derating above 25 °C ambient |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - relevant for polarity-check or series forward-bias applications |
Pinout & Package
The BZX384-C47,115 is housed in a SOD323 (SC-76) plastic surface-mounted package with 2 leads: anode (A) and cathode (K). The cathode is marked by a bar on the device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased during Zener operation; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to circuit ground or lower-potential rail; completes shunt path for regulation current |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective voltage reference where tight regulation is not required, e.g., non-critical biasing or coarse clamping |
| Low-profile SOD323 package | 0.45 mm max height and 1.35 mm × 1.75 mm footprint support high-density PCB layouts and automated assembly |
| 40 W non-repetitive surge rating | Provides robust protection against ESD and short-duration transients without external TVS devices |
| 150 °C maximum junction temperature | Supports operation in industrial environments with elevated ambient temperatures when properly derated |
| 170 μA max reverse leakage at 37.6 V | Minimizes quiescent current draw in battery-powered systems operating near but below breakdown voltage |
Applications
| Power Supply Feedback Regulation | Sensor Signal Clamping |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback or buck-derived auxiliary supplies via optocoupler feedback loop. IC Role / Device Role / Timing Role: Shunt reference element setting error amplifier trip point; replaces TL431 in ultra-low-current designs. Use Value: 47 V Zener voltage allows direct sensing of 48 V bus rails; ±5 % tolerance accommodates wide input variation while maintaining loop stability. |
Use Scenario: Protecting ADC inputs from overvoltage events caused by sensor cable faults or ESD coupling. IC Role / Device Role / Timing Role: Passive clamp limiting input to 47 V, preventing damage to 5 V or 3.3 V analog front-end stages. Use Value: 40 W surge rating absorbs 2 kV HBM ESD pulses without degradation; low capacitance (<50 pF) avoids signal distortion at <1 MHz bandwidth. |
| Microcontroller Reset Circuitry | Industrial I/O Protection |
Use Scenario: Generating reliable reset signal during brown-out conditions in 3.3 V or 5 V MCU systems using resistor-divider + Zener threshold detection. IC Role / Device Role / Timing Role: Precision voltage threshold detector in discrete reset generator; sets hysteresis via resistor network. Use Value: 375 Ω differential resistance ensures predictable trip point across temperature; 170 μA leakage avoids false triggering in high-impedance divider nodes. |
Use Scenario: Safeguarding PLC digital input channels exposed to 24 V DC field wiring with potential surge exposure. IC Role / Device Role / Timing Role: Primary overvoltage limiter placed before series current-limiting resistor and optocoupler. Use Value: 300 mW continuous dissipation supports sustained 24 V line faults; SOD323 package fits compact DIN-rail module footprints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5268BS-7-F (Diodes Inc.) | 47 V nominal, ±5 %, SOT-323 package, 200 mW Ptot, 500 Ω rdif | Lower power rating and higher dynamic impedance reduce regulation accuracy under varying load | Select when board space permits SOT-323 and thermal budget is constrained to <200 mW |
| BZX84-C47 (Nexperia) | Same 47 V/±5 % spec, but in larger SOT-23 package with 500 mW Ptot and 250 Ω rdif | Higher power handling and lower impedance improve regulation stability in higher-current feedback loops | Choose for designs requiring >300 mW continuous dissipation or tighter dynamic regulation |
Compared with BZX384-C47,115, MMBZ5268BS-7-F trades thermal performance for identical footprint compatibility, while BZX84-C47 offers superior regulation fidelity at the cost of increased board area - selection depends on whether space, power, or impedance is the dominant constraint.
Availability
BZX384-C47,115 is available at Aetrix Electronics and suitable for power supply feedback regulation, sensor signal clamping, microcontroller reset circuitry, and industrial I/O protection requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for BZX384-C47,115 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 essential components including logic, discretes, MOSFETs, and bipolar transistors.
The BZX384 series belongs to Nexperia's precision Zener diode portfolio, engineered for low-power voltage reference and clamping in consumer, industrial, and communication equipment where small size and consistent parametric performance are critical.
FAQ
What is the Zener test current for BZX384-C47,115?
The nominal Zener voltage of 47 V is specified at a test current of 2 mA, per Table 9 in the Nexperia datasheet Rev. 4. This differs from the ±1 % and ±2 % variants, which use 5 mA, and reflects the optimized bias point for ±5 % tolerance devices to balance accuracy and thermal stability.
Can BZX384-C47,115 be used in place of a 47 V TL431-based shunt regulator?
No - the BZX384-C47,115 is a passive two-terminal Zener diode without internal amplification or adjustable reference. It lacks the active feedback, low output impedance, and programmable threshold of the TL431. It can replace TL431 only in simple fixed-voltage clamping or coarse reference roles where ±5 % tolerance and higher dynamic impedance are acceptable.
What is the maximum allowable ambient temperature for continuous 300 mW operation?
Continuous 300 mW dissipation is rated only at Tamb ≤ 25 °C on a standard FR4 PCB with single-sided copper. Above 25 °C, power must be linearly derated using the 415 K/W junction-to-ambient thermal resistance; full rating ceases at approximately 65 °C ambient due to the 150 °C Tj limit.
Does the SOD323 package support reflow soldering per JEDEC J-STD-020?
Yes - Nexperia provides validated reflow soldering footprints for the SOD323 package in Figure 12 of the datasheet, compliant with standard lead-free reflow profiles. Recommended peak temperature is 260 °C for ≤10 seconds, with preheat ramp rate ≤3 °C/s and cooling rate ≥1 °C/s to avoid package cracking or delamination.
BZX384-C47,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- 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:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-C47,115 FAQ
1.How can I place an order for BZX384-C47,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C47,115 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 BZX384-C47,115 reliable?
The price and inventory of BZX384-C47,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C47,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C47,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C47,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C47,115?
BZX384-C47,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C47,115 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 BZX384-C47,115?
For technical support, including BZX384-C47,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C47,115 requirements.
6.How does Aetrix verify that BZX384-C47,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C47,115 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 BZX384-C47,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C47,115?
All BZX384-C47,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C47,115, 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 BZX384-C47,115 part is unused and in its original packaging.
Return procedure for BZX384-C47,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C47,115 Tags
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