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NXP Semiconductors BZX284-B4V3,115
- Part No.:
- BZX284-B4V3,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B4V3,115.pdf
- Description:
- DIODE ZENER 4.3V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:5,764
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Product details
Overview
BZX284-B4V3,115 from NXP Semiconductors is a ±2% tolerance, 4.3 V Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 400 mW total power dissipation at 25 °C ambient, with 410 Ω typical differential resistance at 5 mA test current and −2.5 mV/K temperature coefficient - used for precision low-power voltage reference and overvoltage clamping in sensor signal conditioning circuits.
For engineers reviewing the BZX284-B4V3,115 datasheet, BZX284-B4V3,115 pinout, BZX284-B4V3,115 application, or BZX284-B4V3,115 equivalent, this page delivers verified electrical parameters, thermal behavior, SOD110 package dimensions, reverse leakage limits at 1 V, and validated alternative parts for stable supply chain selection.
Technical Context
The BZX284-B4V3,115 operates as a two-terminal silicon Zener diode optimized for stable reverse-bias breakdown regulation. Its 4.3 V nominal Zener voltage is specified at 5 mA test current (IZtest), with tight ±2% tolerance and low 3 μA maximum reverse current at VR = 1 V.
Thermal resistance from junction to ambient is 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB, and its −2.5 mV/K temperature coefficient ensures predictable drift across 25–150 °C operating range - critical for analog front-end biasing where thermal stability affects measurement accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.21–4.39 V at IZ = 5 mA - defines precise regulation point for low-voltage reference rails |
| Tolerance | ±2% - enables tighter system-level voltage margin control vs. ±5% variants |
| Differential Resistance (rdif) | 410 Ω typ. at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤3 μA at VR = 1 V - ensures minimal standby power loss in always-on monitoring circuits |
| Power Dissipation (Ptot) | 400 mW max. at Tamb = 25 °C - sets thermal derating limit for PCB layout and ambient temperature design |
| Temperature Coefficient (SZ) | −2.5 mV/K at IZ = 5 mA - quantifies voltage drift per degree, enabling compensation in precision analog designs |
| Junction Temperature (Tj) | 150 °C max. - constrains maximum allowable power under elevated ambient conditions |
Pinout & Package
SOD110 is a very small ceramic surface-mount package with two terminals: anode (pin 1) and cathode (pin 2), marked by a cathode band on the top surface. Dimensions: 2.10 × 1.40 × 1.60 mm (L × W × H), with 0.1 mm maximum cathode identifier height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry / reverse bias return path | Connected to lower-potential node in Zener clamp configuration; must handle up to 250 mA continuous forward current |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 4.3 V reference when reverse biased; polarity marking critical for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD110 ceramic package | Enables high-density placement in space-constrained IoT sensor modules and wearables |
| ±2% Zener voltage tolerance | Reduces need for post-assembly calibration in factory-set voltage references |
| 400 mW power rating at 25 °C | Supports transient surge suppression in 3.3 V/5 V rail protection without external heatsinking |
| 315 K/W junction-to-ambient thermal resistance | Allows direct thermal modeling for reliability prediction in sealed enclosures |
| −2.5 mV/K temperature coefficient | Enables first-order thermal error correction in precision ADC reference buffers |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing bias voltage for bridge-based pressure sensors in factory automation transmitters. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 4.3 V excitation to Wheatstone bridge. Use Value: ±2% tolerance and −2.5 mV/K TC ensure <±0.5% full-scale error over −25 to +85 °C operating range. |
Use Scenario: Clamping induced ESD transients on USB D+ line before entering USB PHY IC. IC Role / Device Role / Timing Role: Low-capacitance (350 pF) shunt protector limiting voltage to 4.3 V during 8 kV HBM events. Use Value: 3 μA IR at 1 V ensures negligible leakage into high-impedance data lines during normal operation. |
| Medical Pulse Oximeter Front-End | Smart Meter Reference Voltage Generation |
Use Scenario: Generating stable reference for LED driver current control in portable SpO₂ sensors. IC Role / Device Role / Timing Role: Precision Zener regulating current-setting resistor voltage in constant-current LED source. Use Value: 410 Ω rdif minimizes current variation under load changes, improving optical intensity repeatability. |
Use Scenario: Providing 4.3 V reference for 24-bit sigma-delta ADC measuring grid voltage in Class 0.2 meters. IC Role / Device Role / Timing Role: Low-drift voltage reference stabilizing ADC internal reference divider network. Use Value: Ceramic SOD110 package ensures long-term stability and low humidity-induced parameter shift in outdoor meter housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-B4V3 | Same SOD123 package (2.7 × 1.6 × 1.1 mm), identical 4.3 V ±2%, but higher 500 mW Ptot and 550 Ω rdif | Higher power handling suits higher-energy transient clamping; larger footprint may require PCB redesign | Select when board space allows larger SOD123 and thermal margin exceeds 400 mW |
| Vishay PLZ4.3B | SOD123 package, same 4.3 V ±2%, but lower 300 mW Ptot and 380 Ω rdif; 100 nA IR at VR = 1 V | Lower leakage supports ultra-low-power battery-operated devices; reduced power rating limits surge capability | Prefer for energy-harvesting sensor nodes where sub-μA standby current is critical |
Compared with BZX284-B4V3,115, the BZT52-B4V3 offers higher surge robustness at the cost of larger footprint, while the PLZ4.3B trades power capacity for ultra-low leakage - making each suitable for distinct thermal, space, and power budget constraints.
Availability
BZX284-B4V3,115 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and smart meter reference voltage generation requiring stable component supply and guaranteed long-term sourcing.
Supply support for BZX284-B4V3,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The BZX284 series was designed for precision low-power voltage regulation in space-constrained SMD applications, emphasizing tight tolerance, stable temperature behavior, and ceramic-package reliability in harsh environments.
FAQ
What is the Zener voltage tolerance of BZX284-B4V3,115?
The BZX284-B4V3,115 has a ±2% Zener voltage tolerance, meaning its nominal 4.3 V breakdown occurs between 4.21 V and 4.39 V at 5 mA test current. This tighter tolerance than the ±5% BZX284-C series supports higher-accuracy voltage referencing in analog signal chains where BZX284-B4V3,115 is deployed.
What is the maximum reverse leakage current for BZX284-B4V3,115 at 1 V?
The BZX284-B4V3,115 exhibits a maximum reverse current (IR) of 3 μA at VR = 1 V, as specified in the NXP datasheet Table 1. This low leakage ensures minimal parasitic loading in high-impedance reference or bias networks, preserving accuracy in applications like BZX284-B4V3,115-based sensor excitation circuits.
Can BZX284-B4V3,115 be used in place of a 3.3 V Zener diode?
No - the BZX284-B4V3,115 is specifically rated for 4.3 V nominal Zener voltage and is not interchangeable with 3.3 V devices. Substituting it for a 3.3 V Zener would result in incorrect regulation level and potential circuit malfunction; always verify voltage match before replacement, especially for BZX284-B4V3,115 in precision reference roles.
What is the thermal resistance of BZX284-B4V3,115 and how does it affect design?
The BZX284-B4V3,115 has a junction-to-ambient thermal resistance (Rth j-a) of 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB. This value directly determines temperature rise: at 200 mW dissipation, junction temperature rises ~63 °C above ambient - a key constraint for BZX284-B4V3,115 use in enclosed or high-temperature environments.
Is BZX284-B4V3,115 RoHS compliant and halogen-free?
Yes - the BZX284-B4V3,115 is manufactured by NXP Semiconductors to meet RoHS Directive 2011/65/EU requirements and is halogen-free per IEC 61249-2-21. This compliance is confirmed in NXP's official product change notices and material declarations applicable to the SOD110 package variant of BZX284-B4V3,115.
BZX284-B4V3,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 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-110
BZX284-B4V3,115 FAQ
1.How can I place an order for BZX284-B4V3,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-B4V3,115 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 BZX284-B4V3,115 reliable?
The price and inventory of BZX284-B4V3,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-B4V3,115 is usually 5 days.
3.What payment methods are accepted for BZX284-B4V3,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B4V3,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B4V3,115?
BZX284-B4V3,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-B4V3,115 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 BZX284-B4V3,115?
For technical support, including BZX284-B4V3,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B4V3,115 requirements.
6.How does Aetrix verify that BZX284-B4V3,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-B4V3,115 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 BZX284-B4V3,115 meets industry standards.
7.What is the process for return or replacement of BZX284-B4V3,115?
All BZX284-B4V3,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-B4V3,115, 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 BZX284-B4V3,115 part is unused and in its original packaging.
Return procedure for BZX284-B4V3,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-B4V3,115 Tags
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