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Nexperia USA Inc. BZX384-B4V7,115
- Part No.:
- BZX384-B4V7,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B4V7,115.pdf
- Description:
- DIODE ZENER 4.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:1,229
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Product details
Overview
BZX384-B4V7,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 4.7 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 40 W non-repetitive peak reverse power. It operates across –65 °C to +150 °C ambient and serves as a precision reference or overvoltage clamp in low-power analog signal conditioning circuits.
For engineers reviewing the BZX384-B4V7,115 datasheet, BZX384-B4V7,115 pinout, BZX384-B4V7,115 application, or BZX384-B4V7,115 equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, thermal resistance, and cathode/anode terminal mapping - all confirmed from Nexperia's Rev. 4 product data sheet.
Technical Context
This device functions as a two-terminal silicon Zener diode operating in reverse breakdown mode, with a specified 4.7 V nominal Zener voltage at IZ = 5 mA and typical differential resistance of 500 Ω. Its temperature coefficient is +0.2 mV/K at 5 mA, indicating slight positive drift with junction temperature rise.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it exhibits Rth(j-a) = 415 K/W (free air) and Rth(j-sp) = 110 K/W (to solder point), supporting stable regulation under transient surges up to 40 W for 100 μs pulses at Tj = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.61 V to 4.79 V at IZ = 5 mA - defines precise clamping threshold for voltage reference or protection |
| Differential Resistance (rdif) | 500 Ω max at IZ = 5 mA - determines output impedance and regulation stiffness under load variation |
| Reverse Current (IR) | 3 μA max at VR = 3 V - ensures minimal leakage before breakdown, critical for low-power standby circuits |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on standard FR4 - sets continuous DC power handling limit for thermal design |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 μs - enables robust transient surge suppression without failure |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - confirms low conduction loss when used in forward-biased configurations |
| Junction Temperature (Tj) | 150 °C maximum - constrains maximum allowable thermal rise during operation or surge events |
Pinout & Package
The BZX384-B4V7,115 is housed in a SOD323 (SC-76) plastic surface-mounted package with two 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 terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants (BZX384-C), suitable for mid-precision references |
| Low-profile SOD323 package | 0.45 mm height and 1.35 mm × 0.8 mm footprint - supports high-density PCB layouts in space-constrained designs |
| 40 W surge capability | Withstands short-duration transients (e.g., ESD or inductive kick) without degradation |
| 150 °C maximum junction temperature | Permits reliable operation in industrial environments with elevated ambient temperatures |
| Thermal resistance to solder point | 110 K/W - allows effective heat transfer to PCB copper, improving sustained power handling |
Applications
| Power Supply Rail Clamp | ADC Reference Stabilization |
|---|---|
|
Use Scenario: Clamping a 5 V microcontroller supply rail against overvoltage transients from switching regulators or hot-plug events. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing excess current above 4.7 V to protect downstream logic. Use Value: Limits rail excursion to ≤4.79 V with <3 μA leakage below 3 V, minimizing standby power impact. |
Use Scenario: Providing a stable 4.7 V reference for a 12-bit SAR ADC in a battery-powered sensor node. IC Role / Device Role / Timing Role: Low-drift Zener source delivering fixed bias to ADC reference input. Use Value: +0.2 mV/K temperature coefficient and 500 Ω rdif ensure <0.5 LSB error across –40 °C to +85 °C. |
| Signal Level Translation | Overvoltage Protection for GPIO |
|
Use Scenario: Shifting a 3.3 V logic signal to a 4.7 V interface level using a simple resistor-Zener network. IC Role / Device Role / Timing Role: Passive level-shifter establishing defined high-level threshold via reverse breakdown. Use Value: 4.7 V nominal VZ with tight ±2 % tolerance ensures repeatable translation within 94 mV window. |
Use Scenario: Protecting a 3.3 V I/O pin from accidental 12 V connection or ESD-induced spikes. IC Role / Device Role / Timing Role: Fast-acting clamp diverting surge current away from sensitive CMOS input. Use Value: 40 W non-repetitive surge rating absorbs 100 μs transients while maintaining <10 ns response latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-A4V7 | ±1 % tolerance (4.65–4.75 V), higher cost, tighter VZ spread | Better suited for high-precision references where <±10 mV error is required | Select when absolute voltage accuracy outweighs cost sensitivity |
| BZX384-C4V7 | ±5 % tolerance (4.4–5.0 V), lower cost, wider VZ distribution | Acceptable for coarse clamping where 4.7 V is nominal but not critical | Select for cost-driven consumer applications with relaxed regulation needs |
Compared with BZX384-B4V7,115, the A variant offers superior voltage accuracy at higher unit cost and tighter thermal drift control, while the C variant trades precision for economy and broader process tolerance - making the B grade optimal for balanced performance in industrial signal conditioning and power rail supervision.
Availability
BZX384-B4V7,115 is available at Aetrix Electronics and suitable for power supply rail clamping, ADC reference stabilization, signal level translation, and GPIO overvoltage protection requiring stable component supply across industrial, instrumentation, and embedded control programs.
Supply support for BZX384-B4V7,115 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 automotive-qualified and industrial-grade components.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for low-power voltage regulation and reference applications in space-constrained, thermally demanding environments.
FAQ
What is the maximum continuous reverse current the BZX384-B4V7,115 can handle?
The device has no specified maximum continuous reverse current; its steady-state operation is governed by power dissipation limits. At 4.7 V, the maximum continuous Zener current is approximately 63.8 mA (300 mW ÷ 4.7 V), assuming Tamb ≤ 25 °C on standard FR4 PCB. Derating is required at higher ambient temperatures per the thermal resistance data.
Can BZX384-B4V7,115 be used in series or parallel configurations?
Series connection is feasible for higher-voltage references but introduces cumulative tolerance and temperature coefficient errors. Parallel use is strongly discouraged due to mismatched Zener characteristics causing current hogging and thermal runaway - individual devices must be operated independently with appropriate ballast resistors.
How does the marking code 'K8' correspond to BZX384-B4V7?
'K8' is the top-side marking for BZX384-B4V7, as confirmed in Table 4 of the datasheet. The 'K' prefix denotes the ±2 % tolerance (B-series), and '8' identifies the 4.7 V nominal voltage grade within that series - enabling visual identification on assembled PCBs without test equipment.
Is BZX384-B4V7,115 suitable for automotive applications?
No - this part is explicitly non-automotive qualified per Revision History section 13, which states "Products changed to non-automotive qualification" in Rev. 4. Automotive alternatives require the -Q suffix (e.g., BZX384-B4V7-Q) and undergo additional AEC-Q200 stress testing; use only those parts in vehicle systems.
BZX384-B4V7,115 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):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 2 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-B4V7,115 FAQ
1.How can I place an order for BZX384-B4V7,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B4V7,115 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-B4V7,115 reliable?
The price and inventory of BZX384-B4V7,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B4V7,115 is usually 5 days.
3.What payment methods are accepted for BZX384-B4V7,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B4V7,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B4V7,115?
BZX384-B4V7,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B4V7,115 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-B4V7,115?
For technical support, including BZX384-B4V7,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B4V7,115 requirements.
6.How does Aetrix verify that BZX384-B4V7,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-B4V7,115 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-B4V7,115 meets industry standards.
7.What is the process for return or replacement of BZX384-B4V7,115?
All BZX384-B4V7,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B4V7,115, 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-B4V7,115 part is unused and in its original packaging.
Return procedure for BZX384-B4V7,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B4V7,115 Tags
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