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NXP Semiconductors BZX284-B4V7,115
- Part No.:
- BZX284-B4V7,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B4V7,115.pdf
- Description:
- DIODE ZENER 4.7V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:4,356
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Product details
Overview
BZX284-B4V7,115 from NXP Semiconductors is a ±2% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 4.61–4.79 V nominal Zener voltage at 5 mA test current, 400 mW total power dissipation, and 425–500 Ω 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 BZX284-B4V7,115 datasheet, BZX284-B4V7,115 pinout, BZX284-B4V7,115 application, or BZX284-B4V7,115 equivalent, key selection criteria include its tight ±2% voltage tolerance, low 3 μA reverse leakage at 2 V, −1.4 mV/K temperature coefficient, and SOD110 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage regulation under varying load and temperature conditions. Its differential resistance of 425–500 Ω at 5 mA defines output impedance in shunt-regulator configurations, while its −1.4 mV/K temperature coefficient indicates slight negative drift across operating junction temperatures (−65 °C to +150 °C).
The device uses a planar silicon junction structure optimized for low noise and predictable knee characteristics. With 325 pF diode capacitance at 0 V and 1 MHz, it supports moderate-frequency stabilization without introducing significant phase lag in feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.61–4.79 V at IZ = 5 mA - defines precise regulation point for 5 V rail clamping or reference generation |
| Tolerance | ±2% - enables tighter output voltage control vs. ±5% variants in critical analog sensing or ADC reference circuits |
| Differential Resistance (rdiff) | 425–500 Ω at IZ = 5 mA - determines load regulation error and ripple rejection capability |
| Reverse Leakage (IR) | 3 μA at VR = 2 V - ensures minimal quiescent current draw in battery-powered standby modes |
| Temperature Coefficient (SZ) | −1.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius in thermally variable environments |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - sets maximum continuous power handling before thermal derating applies |
| Junction Temperature (Tj) | −65 to +150 °C - specifies full operational range for industrial and automotive under-hood applications |
Pinout & Package
SOD110 is a very small ceramic surface-mount package (2.10 × 1.40 × 1.60 mm) with cathode marked on top surface. The device has two terminals: anode and cathode, with cathode identified by a visible marking band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in shunt regulator topology; carries forward current up to 250 mA |
| Cathode (2) | Zener breakdown terminal / regulated output node | Connected to voltage node requiring stabilization; sinks reverse current during regulation; marked side on package |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables accurate 4.7 V reference without post-production trimming in precision analog front-ends |
| Low 3 μA reverse leakage at 2 V | Minimizes standby power loss in always-on circuits such as real-time clock backup supplies |
| −1.4 mV/K temperature coefficient | Provides predictable, linear voltage drift for compensated designs in temperature-varying enclosures |
| 400 mW power rating in SOD110 | Delivers higher power density than comparable SOD323 Zeners, supporting robust transient suppression |
| 325 pF junction capacitance | Permits use in DC–1 MHz stabilization without destabilizing op-amp feedback networks |
Applications
| Power Supply Feedback Clamping | Sensor Bias Voltage Reference |
|---|---|
Use Scenario: Stabilizing the feedback node of a 5 V switching regulator IC to improve output accuracy and line/load regulation. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 4.7 V threshold to error amplifier input. Use Value: Tight ±2% tolerance reduces output deviation to ±1.5% over temperature, meeting Class II power supply specs. |
Use Scenario: Supplying a stable bias voltage to a resistive temperature detector (RTD) bridge in an industrial temperature transmitter. IC Role / Device Role / Timing Role: Precision voltage reference establishing known excitation current through RTD element. Use Value: Low 3 μA leakage avoids measurement offset errors; −1.4 mV/K drift is compensated in firmware using lookup tables. |
| Overvoltage Protection Clamp | ADC Input Protection Circuit |
Use Scenario: Protecting microcontroller GPIO pins from transient surges exceeding 5.5 V in automotive body-control modules. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess energy to ground during ESD or load-dump events. Use Value: 400 mW rating sustains 100 μs surge currents up to 12 A without degradation; SOD110 footprint fits near connector entry points. |
Use Scenario: Limiting input voltage to a 12-bit SAR ADC's analog input channel to prevent damage from accidental 12 V miswiring. IC Role / Device Role / Timing Role: Input-stage voltage limiter clamping signal to 4.7 V before RC filter and buffer amplifier. Use Value: 425–500 Ω dynamic impedance ensures fast recovery after overvoltage, preserving signal integrity for sub-1 LSB accuracy. |
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-B4V7 | Same ±2% tolerance, 4.61–4.79 V, but in SOD123 package (2.7 × 1.7 × 1.3 mm); 500 mW rating; 500 Ω rdiff | Larger footprint; higher power handling; slightly higher dynamic impedance affects regulation precision | Select when board layout allows larger package and higher surge immunity is required |
| Vishay BZX84-B4V7 | Same ±2% tolerance, 4.61–4.79 V, but in SOT-23 package (3.0 × 1.4 × 1.1 mm); 300 mW rating; 600 Ω rdiff | Higher profile; lower power rating; higher differential resistance increases load regulation error | Select when existing SOT-23 footprints are used and 300 mW suffices for target application |
Compared with BZX284-B4V7,115, the BZT52-B4V7 offers higher surge resilience in a larger package, while the BZX84-B4V7 trades power and impedance performance for SOT-23 compatibility-neither is pin-compatible due to differing SMD outlines (SOD110 vs. SOD123 vs. SOT-23), requiring PCB redesign.
Availability
BZX284-B4V7,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and medical auxiliary power supplies requiring stable component supply and long-term lifecycle support.
Supply support for BZX284-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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The BZX284 series was designed for high-reliability, low-power voltage regulation in space-constrained SMD applications-emphasizing tight tolerance, thermal stability, and ceramic-package robustness for harsh-environment deployments.
FAQ
What is the Zener voltage tolerance of the BZX284-B4V7,115?
The BZX284-B4V7,115 has a guaranteed ±2% Zener voltage tolerance, meaning its nominal 4.7 V breakdown occurs between 4.61 V and 4.79 V at 5 mA test current. This tight tolerance makes the BZX284-B4V7,115 suitable for applications demanding higher regulation accuracy than standard ±5% Zeners, such as precision reference circuits and closed-loop feedback systems where output stability is critical.
What is the maximum power dissipation rating for the BZX284-B4V7,115?
The BZX284-B4V7,115 is rated for a maximum total power dissipation of 400 mW at ambient temperature of 25 °C, with thermal resistance from junction to ambient (Rth j-a) of 315 K/W when mounted on a 11 × 25 × 1.6 mm PCB. Derating is required above 25 °C ambient-approximately 1.27 mW/°C reduction-ensuring safe operation up to +150 °C junction temperature. This rating directly governs the BZX284-B4V7,115's ability to absorb transient energy or sustain continuous regulation current.
How does the temperature coefficient of the BZX284-B4V7,115 affect circuit performance?
The BZX284-B4V7,115 exhibits a temperature coefficient of −1.4 mV/K at 5 mA, indicating its Zener voltage decreases by 1.4 mV per degree Celsius rise in junction temperature. This predictable negative drift allows designers to compensate in firmware or analog circuitry-especially valuable in sensor biasing and reference applications where thermal gradients exist. Unlike higher-voltage Zeners with positive coefficients, the BZX284-B4V7,115's behavior simplifies compensation schemes in mid-range voltage references.
What package type is used for the BZX284-B4V7,115 and why is it significant?
The BZX284-B4V7,115 uses the SOD110 ceramic surface-mount package (2.10 × 1.40 × 1.60 mm), notable for its small footprint, hermetic-like moisture resistance, and superior thermal stability versus plastic packages. Its compact size supports high-density PCB layouts in portable and automotive modules, while the ceramic body enhances reliability in humid or thermally cycling environments. This distinguishes the BZX284-B4V7,115 from alternatives in SOD123 or SOT-23, which use molded plastic and exhibit higher thermal resistance.
What is the reverse leakage current specification for the BZX284-B4V7,115?
The BZX284-B4V7,115 specifies a maximum reverse leakage current (IR) of 3 μA at VR = 2 V, measured at 25 °C. This low leakage ensures minimal parasitic current draw in high-impedance nodes-critical for battery-powered devices, precision instrumentation, and standby circuits. Because leakage rises exponentially with temperature and voltage, this value confirms the BZX284-B4V7,115's suitability for low-power regulation where even nanoamp-level errors impact system accuracy or runtime.
BZX284-B4V7,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 400 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-110
BZX284-B4V7,115 FAQ
1.How can I place an order for BZX284-B4V7,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-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 BZX284-B4V7,115 reliable?
The price and inventory of BZX284-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 BZX284-B4V7,115 is usually 5 days.
3.What payment methods are accepted for BZX284-B4V7,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B4V7,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B4V7,115?
BZX284-B4V7,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-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 BZX284-B4V7,115?
For technical support, including BZX284-B4V7,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B4V7,115 requirements.
6.How does Aetrix verify that BZX284-B4V7,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-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 BZX284-B4V7,115 meets industry standards.
7.What is the process for return or replacement of BZX284-B4V7,115?
All BZX284-B4V7,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-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 BZX284-B4V7,115 part is unused and in its original packaging.
Return procedure for BZX284-B4V7,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-B4V7,115 Tags
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