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Nexperia USA Inc. BZX384-B5V1,115
- Part No.:
- BZX384-B5V1,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B5V1,115.pdf
- Description:
- DIODE ZENER 5.1V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,756
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Product details
Overview
BZX384-B5V1,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 5.1 V nominal breakdown at 5 mA, with 300 mW total power dissipation and 40 W non-repetitive peak reverse power handling. It serves as a precision reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the BZX384-B5V1,115 datasheet, BZX384-B5V1,115 pinout, BZX384-B5V1,115 application, or BZX384-B5V1,115 equivalent, this page delivers verified electrical parameters, thermal behavior, cathode/anode terminal mapping, real-world regulation use cases, and validated alternative parts with documented tolerance and temperature coefficient differences.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under varying load and supply conditions. Its 5.1 V nominal Zener voltage is specified at IZ = 5 mA, with differential resistance ≤480 Ω and temperature coefficient of −2.7 mV/K to +1.2 mV/K over operating current range.
Designed for surface-mount integration on FR4 PCBs with single-sided copper, it exhibits Rth(j-a) = 415 K/W in free air and Rth(j-sp) = 110 K/W to solder point, enabling reliable thermal management in space-constrained consumer and industrial modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.00 V to 5.20 V at IZ = 5 mA - defines tight ±2 % regulation window for reference stability |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard PCB |
| Differential Resistance (rdif) | ≤480 Ω - determines output impedance and load regulation error under current variation |
| Reverse Current (IR) | ≤2 μA at VR = 3 V - ensures minimal leakage in standby or high-impedance bias networks |
| Peak Reverse Power (PZSM) | 40 W for tp = 100 μs - supports transient surge suppression without failure |
| Temperature Coefficient (SZ) | −2.7 mV/K to +1.2 mV/K - quantifies voltage drift per degree Celsius over operating range |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - enables predictable forward conduction if used bidirectionally or in protection schemes |
Pinout & Package
The BZX384-B5V1,115 is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants (BZX384-C), reducing calibration overhead in precision references |
| 300 mW total power rating | Supports continuous operation in low-current biasing, sensor excitation, and logic-level clamping without heatsinking |
| 40 W non-repetitive peak power | Provides robust ESD and surge immunity per IEC 61000-4-2 Level 4 when used in input protection networks |
| SOD323 footprint compatibility | Matches industry-standard 0805-equivalent land pattern (2.2 mm × 1.35 mm), simplifying PCB layout reuse |
| −65 °C to +150 °C operating range | Ensures functionality across automotive cabin, industrial control, and outdoor IoT environments |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing feedback voltage in low-power linear regulators or op-amp reference inputs. IC Role / Device Role / Timing Role: Provides fixed 5.1 V reference point for error amplifier comparison. Use Value: Maintains <±10 mV output deviation over 0–50 °C ambient due to low rdif and controlled SZ. |
Use Scenario: Protecting microcontroller GPIO pins from accidental 12 V misconnection. IC Role / Device Role / Timing Role: Shunts excess voltage above 5.2 V to ground before IC damage threshold. Use Value: Limits clamped voltage to ≤5.5 V at 100 mA surge, leveraging 40 W PZSM capability. |
| Sensor Bias Network | ADC Input Protection |
|
Use Scenario: Supplying stable excitation voltage to resistive temperature detectors (RTDs). IC Role / Device Role / Timing Role: Acts as low-noise, low-drift voltage source replacing higher-cost bandgap references. Use Value: Delivers <0.5 % full-scale error contribution over −40 °C to +85 °C due to ±2 % VZ tolerance. |
Use Scenario: Preventing ADC input overload from external transducer signals exceeding rail limits. IC Role / Device Role / Timing Role: Clamps input to 5.1 V ±0.1 V while presenting <1 nA leakage below 3 V. Use Value: Ensures ADC integrity without adding series resistance that degrades bandwidth or SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-A5V1,115 | ±1 % VZ tolerance (4.99–5.03 V), lower rdif (≤400 Ω), tighter SZ (−2.7 to +0.0 mV/K) | Better for metrology-grade references where <0.5 % absolute accuracy is required | Select when system-level calibration budget is constrained and thermal drift must be minimized |
| BZX384-C5V1,115 | ±5 % VZ tolerance (4.8–5.4 V), higher rdif (≤600 Ω), wider SZ (−2.7 to +2.5 mV/K) | Suitable for non-critical voltage limiting where cost reduction outweighs regulation precision | Choose for cost-sensitive consumer products where ±5 % tolerance satisfies functional safety thresholds |
Compared with BZX384-B5V1,115, the A variant trades cost for tighter regulation and lower drift, while the C variant reduces unit price at the expense of voltage accuracy and thermal stability-making the B grade optimal for balanced performance in industrial sensing and power management.
Availability
BZX384-B5V1,115 is available at Aetrix Electronics and suitable for power supply reference design, overvoltage protection circuits, sensor bias networks, and ADC input clamping requiring stable component supply and consistent parametric performance across production batches.
Supply support for BZX384-B5V1,115 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 manufacturing rooted in process technology leadership and automotive-grade quality systems.
The BZX384 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for compact, low-power voltage reference and protection functions in consumer, industrial, and computing applications where SMD footprint and parametric consistency are critical.
FAQ
What is the maximum continuous reverse current the BZX384-B5V1,115 can sustain at 25 °C?
The device is rated for continuous operation up to 250 mA forward current, but as a Zener diode, its steady-state reverse current is limited by power dissipation. At 25 °C ambient and no heatsinking, the maximum sustainable reverse current is approximately 59 mA (300 mW ÷ 5.1 V), assuming nominal VZ. Exceeding this risks junction overheating beyond 150 °C.
How does the marking code 'K9' correspond to BZX384-B5V1,115?
'K9' is the top-side laser marking for BZX384-B5V1,115 per Table 4 of the datasheet. It uniquely identifies the ±2 % tolerance, 5.1 V breakdown variant within the BZX384-B subseries and distinguishes it from A-series (e.g., '23') and C-series (e.g., 'D5') versions of the same nominal voltage.
Can BZX384-B5V1,115 be used in place of a 5.1 V TL431 shunt regulator?
No-it lacks the active feedback and adjustable reference architecture of the TL431. The BZX384-B5V1,115 provides passive, fixed-voltage regulation with higher dynamic impedance and no cathode-to-anode gain. It is appropriate only for simple clamping or coarse reference roles, not precision programmable regulation.
What is the typical reverse leakage current at 3 V reverse bias and 25 °C?
Per Table 8, the maximum reverse current (IR) at VR = 3 V and Tj = 25 °C is 2 μA. Typical values are significantly lower-often below 100 nA-as confirmed by Fig. 8's reverse IV curves for 5.1 V devices, making it suitable for high-impedance bias networks.
BZX384-B5V1,115 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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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-B5V1,115 FAQ
1.How can I place an order for BZX384-B5V1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B5V1,115 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-B5V1,115 reliable?
The price and inventory of BZX384-B5V1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B5V1,115 is usually 5 days.
3.What payment methods are accepted for BZX384-B5V1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B5V1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B5V1,115?
BZX384-B5V1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B5V1,115 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-B5V1,115?
For technical support, including BZX384-B5V1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B5V1,115 requirements.
6.How does Aetrix verify that BZX384-B5V1,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-B5V1,115 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-B5V1,115 meets industry standards.
7.What is the process for return or replacement of BZX384-B5V1,115?
All BZX384-B5V1,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B5V1,115, 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-B5V1,115 part is unused and in its original packaging.
Return procedure for BZX384-B5V1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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