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Nexperia USA Inc. BZX384-C15,115
- Part No.:
- BZX384-C15,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C15,115.pdf
- Description:
- DIODE ZENER 15V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:30,704
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Product details
Overview
BZX384-C15,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 15 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 75 Ω maximum differential resistance. It serves as a precision low-power reference or clamp in power supply feedback paths, sensor biasing circuits, and overvoltage protection stages.
For engineers reviewing the BZX384-C15,115 datasheet, BZX384-C15,115 pinout, BZX384-C15,115 application, or BZX384-C15,115 equivalent, key selection criteria include its ±5 % VZ tolerance, 15 V regulation point, SOD323 thermal resistance (Rth(j-a) = 415 K/W), non-repetitive peak reverse power (40 W), and cathode-anode polarity marking.
Technical Context
This discrete Zener diode operates in reverse-biased avalanche mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its 15 V nominal working voltage is specified at IZ = 5 mA with a temperature coefficient of +9.2 to +13.0 mV/K and reverse current ≤0.05 μA at VR = 12 V.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers regulated output with 75 Ω differential resistance and 150 pF junction capacitance at 1 MHz and 0 V bias - enabling stable performance in low-noise analog references and transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 13.8 V to 15.6 V at IZ = 5 mA - defines usable regulation window for 15 V nominal reference |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | ≤75 Ω at IZ = 5 mA - determines regulation stiffness and output impedance in feedback loops |
| Reverse Current (IR) | ≤0.05 μA at VR = 12 V - ensures minimal leakage in high-impedance bias networks |
| Non-repetitive Peak Reverse Power | 40 W for tp = 100 μs - supports transient surge clamping without failure |
| Junction-to-Ambient Thermal Resistance | 415 K/W - limits temperature rise to ~125 °C at full 300 mW on standard FR4 layout |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables predictable forward conduction in dual-direction protection schemes |
Pinout & Package
The BZX384-C15,115 is housed in a SOD323 (SC-76) plastic surface-mount 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; polarity marker aligns with PCB silkscreen bar for correct orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % VZ tolerance | Enables cost-effective voltage referencing where tight regulation is not required, e.g., non-critical biasing |
| 300 mW power rating | Supports stable operation in space-constrained consumer and industrial PCBs without heatsinking |
| SOD323 footprint | Minimizes board area (2.3 × 1.35 mm) while maintaining solder joint reliability per JEDEC J-STD-020 |
| 150 °C max junction temperature | Allows operation in extended ambient environments up to +125 °C with derating |
| 40 W non-repetitive surge capability | Provides robust ESD and transient immunity per IEC 61000-4-2 Level 4 when used in clamping configurations |
Applications
| Power Supply Feedback Reference | Sensor Biasing Network |
|---|---|
Use Scenario: Stabilizing output voltage in adjustable linear regulators (e.g., LM317) via resistor divider feedback. IC Role / Device Role: Provides precise 15 V reference point to set output regulation threshold. Use Value: Maintains ±5 % output accuracy across temperature and line variations without active compensation. |
Use Scenario: Supplying stable excitation voltage to resistive bridge sensors (e.g., strain gauges). IC Role / Device Role: Acts as low-drift, low-noise voltage source replacing higher-cost references. Use Value: Delivers <0.05 μA leakage and <75 Ω dynamic impedance to minimize measurement error. |
| Overvoltage Clamp Protection | Microcontroller I/O Pin Protection |
Use Scenario: Limiting input voltage to downstream ICs during power-up surges or hot-swap events. IC Role / Device Role: Shunts excess energy above 15.6 V to ground before damage occurs. Use Value: Withstands 40 W transient pulses (100 μs) without degradation, extending system lifetime. |
Use Scenario: Safeguarding 3.3 V or 5 V MCU GPIO pins against accidental 12–24 V miswiring. IC Role / Device Role: Clamps induced transients to safe levels using bidirectional Zener action. Use Value: Low 150 pF capacitance avoids signal integrity issues on high-speed digital lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245BS-7-F | 15 V, ±5 %, SOT-323 package, 200 mW Ptot, rdif ≤ 17 Ω | Lower power rating and tighter regulation, but higher cost and smaller thermal margin | Select when lower dynamic impedance is critical and board layout allows SOT-323 footprint |
| BZX384-B15,115 | 15 V, ±2 % tolerance, identical SOD323 package and 300 mW rating | Narrower VZ spread improves accuracy in precision feedback, at slight cost premium | Choose for improved regulation stability in closed-loop power supplies where ±2 % is justified |
Compared with BZX384-C15,115, the MMBZ5245BS-7-F offers better regulation stiffness but reduced surge resilience, while the BZX384-B15,115 provides tighter voltage control without sacrificing thermal or mechanical compatibility - making it ideal for upgraded designs requiring higher accuracy within the same footprint.
Availability
BZX384-C15,115 is available at Aetrix Electronics and suitable for power supply feedback, sensor biasing, overvoltage clamping, and microcontroller I/O protection requiring stable component supply and consistent SOD323 packaging.
Supply support for BZX384-C15,115 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 for cost-sensitive, space-constrained applications demanding stable voltage reference or clamping without active circuitry.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX384-C15,115 is rated for a maximum continuous forward current of 250 mA, but its Zener operation relies on controlled reverse current. At its nominal 15 V breakdown, it is specified for IZ = 5 mA typical operation; sustained reverse current beyond 20 mA requires thermal derating per the 300 mW limit and 415 K/W Rth(j-a).
How does the ±5 % tolerance affect regulation accuracy in a feedback loop?
The ±5 % tolerance (13.8 V to 15.6 V) means the actual regulation voltage may vary by up to ±0.75 V around 15 V. In feedback applications, this directly impacts output voltage accuracy - e.g., a 5 V regulator using this diode in a divider will exhibit proportional error unless compensated via calibration or trimming.
Can this diode be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients and manufacturing variations that cause current hogging when paralleled. Even matched units risk thermal runaway. For higher power, use a single higher-rated device (e.g., BZX84-C15) or external series pass transistor architecture.
Is the SOD323 package compatible with standard reflow profiles?
Yes - the SOD323 package is qualified for lead-free reflow per JEDEC J-STD-020. Recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s. The footprint shown in Figure 12 (solder lands: 0.5 mm × 1.65 mm, 0.6 mm pitch) ensures reliable wetting and void-free joints.
BZX384-C15,115 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):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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-C15,115 FAQ
1.How can I place an order for BZX384-C15,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C15,115 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-C15,115 reliable?
The price and inventory of BZX384-C15,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-C15,115 is usually 5 days.
3.What payment methods are accepted for BZX384-C15,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C15,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C15,115?
BZX384-C15,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C15,115 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-C15,115?
For technical support, including BZX384-C15,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C15,115 requirements.
6.How does Aetrix verify that BZX384-C15,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-C15,115 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-C15,115 meets industry standards.
7.What is the process for return or replacement of BZX384-C15,115?
All BZX384-C15,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C15,115, 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-C15,115 part is unused and in its original packaging.
Return procedure for BZX384-C15,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C15,115 Tags
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MMBZ5240B-7-F
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BZT52C15S-7-F
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MM5Z5V1ST1G
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