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NXP Semiconductors BZX284-B47,115
- Part No.:
- BZX284-B47,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B47,115.pdf
- Description:
- DIODE ZENER 47V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:2,155
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Product details
Overview
BZX284-B47,115 from NXP Semiconductors is a ±2% tolerance, 47 V nominal Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 400 mW total power dissipation at 25 °C ambient, with 45 Ω typical differential resistance at 2 mA test current, used for precision low-power voltage reference and regulation in space-constrained PCBs.
For engineers reviewing the BZX284-B47,115 datasheet, BZX284-B47,115 pinout, BZX284-B47,115 application, or BZX284-B47,115 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (315 K/W), reverse leakage (≤50 nA at 0.7×VZnom), and SOD110 footprint compatibility with automated SMT assembly.
Technical Context
The BZX284-B47,115 operates as a two-terminal silicon Zener diode optimized for stable reverse-bias voltage regulation. It exhibits a positive temperature coefficient of +30 mV/K at 2 mA, low junction capacitance (55 pF at 0 V), and is characterized with IZtest = 2 mA per the BZX284-B/C27–75 series specification table.
Designed for surface-mount use on standard FR-4 PCBs (11 × 25 × 1.6 mm), it relies on conduction through its single P-N junction under reverse breakdown, with no forward conduction required in regulation mode. Its SOD110 package provides hermetic ceramic encapsulation suitable for industrial ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 46.1–47.9 V at IZ = 2 mA; ensures tight regulation within ±2% across production lot |
| Differential Resistance rdif | 45 Ω typical at IZ = 2 mA; determines output impedance and load regulation sensitivity |
| Power Dissipation Ptot | 400 mW max at Tamb = 25 °C; defines maximum continuous steady-state power handling |
| Reverse Leakage IR | ≤50 nA at VR = 0.7×VZnom (32.9 V); critical for low-current bias networks and battery-powered circuits |
| Thermal Resistance Rth j-a | 315 K/W; indicates junction-to-ambient heat transfer efficiency on standard PCB mounting |
| Junction Temperature Tj | 150 °C max; sets upper operating limit for reliability under sustained power stress |
| Capacitance Cd | 55 pF at f = 1 MHz, VR = 0 V; impacts high-frequency noise filtering and transient response |
Pinout & Package
SOD110 is a very small ceramic rectangular surface-mounted package with two terminals: anode (1) and cathode (2), marked by a cathode band on the top surface. The device has no internal leads; terminals are metallized pads on opposite ends of the ceramic body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Forward current entry / Reverse breakdown return path | Connected to lower-potential node in regulation circuit; carries full load current during reverse operation |
| Cathode (Terminal 2) | Reverse breakdown voltage reference node | Connected to regulated output node; voltage at this terminal is stabilized at VZ when reverse biased above knee |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation margins than ±5% variants, reducing need for post-production trimming in precision references |
| 400 mW power rating in SOD110 | Delivers higher power density than comparable SOD323 or SOD523 Zeners, supporting moderate current loads without derating |
| Low 55 pF junction capacitance | Minimizes signal coupling and phase shift in RF bias networks and high-speed feedback paths |
| +30 mV/K temperature coefficient | Provides predictable, linear drift over temperature-enabling compensation in multi-diode reference designs |
| Ceramic SOD110 package | Offers superior moisture resistance and long-term parameter stability vs. plastic SMD packages in humid environments |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in factory automation modules. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 47 V bias to Wheatstone bridge, independent of supply rail fluctuations. Use Value: Maintains sensor output linearity within ±0.1% FS error over 0–70 °C due to tight ±2% VZ tolerance and low thermal drift. | Use Scenario: Generating precise reset threshold for 3.3 V microcontrollers in battery-operated IoT edge nodes. IC Role / Device Role / Timing Role: Reverse-biased Zener in resistor divider network feeding supervisor IC input. Use Value: Enables reliable brown-out detection at 3.0 V with <50 nA leakage, extending battery life by minimizing quiescent current draw. |
| Programmable Power Supply Feedback | ESD-Protected Analog Input Protection |
Use Scenario: Setting output voltage in digitally adjustable DC-DC converter using optocoupler feedback loop. IC Role / Device Role / Timing Role: Precision Zener reference in secondary-side error amplifier circuit, defining target output voltage. Use Value: Achieves ±0.5% output accuracy over line/load/temperature with 45 Ω rdif limiting feedback loop gain variation. | Use Scenario: Clamping transient overvoltage on 0–5 V analog front-end inputs exposed to industrial ESD events. IC Role / Device Role / Timing Role: Low-capacitance shunt protector placed directly at connector interface before signal conditioning stage. Use Value: Limits voltage to ≤47.9 V with 55 pF capacitance preserving signal integrity up to 100 kHz bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulator diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-B47 | Same ±2% tolerance, 47 V nominal, but in SOD-123 package with higher Rth j-a (400 K/W) and 60 pF capacitance | Less effective thermal management on dense PCBs; slightly higher AC loading in high-frequency circuits | Select when SOD-123 footprint is already standardized and thermal margin >15 °C is available |
| Vishay PLZ47B | ±2% tolerance, 47 V nominal, but in DO-219AB (SOD-128) package with 350 mW rating and 40 Ω rdif | Lower power capability limits use in sustained 10 mA regulation; tighter rdif improves load regulation | Select when lowest possible dynamic impedance is prioritized over power headroom in low-current references |
Compared with BZX284-B47,115, the BZT52-B47 offers identical electrical specs but reduced thermal performance in a larger package, while the PLZ47B trades 50 mW power headroom for improved regulation stiffness-making the BZX284-B47,115 optimal for balanced power, size, and stability in compact industrial designs.
Availability
BZX284-B47,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power microcontroller supervision, and programmable power supply feedback requiring stable component supply with guaranteed long-term manufacturability.
Supply support for BZX284-B47,115 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 as a high-reliability, ceramic-packaged Zener family targeting space-constrained industrial control systems where long-term parametric stability and moisture resistance are critical.
FAQ
What is the Zener voltage tolerance of the BZX284-B47,115?
The BZX284-B47,115 has a ±2% Zener voltage tolerance, meaning its nominal 47 V breakdown voltage is guaranteed between 46.1 V and 47.9 V when tested at IZ = 2 mA and Tj = 25 °C. This tighter tolerance supports precision regulation without external calibration and is distinct from the ±5% BZX284-C47 variant.
Can the BZX284-B47,115 be used in high-frequency applications?
Yes-the BZX284-B47,115 exhibits 55 pF junction capacitance at 0 V reverse bias and 1 MHz, making it suitable for high-frequency biasing and clamping up to ~100 kHz. Its low capacitance minimizes signal distortion in analog front-ends, though parasitic inductance of PCB traces becomes dominant above 10 MHz.
What is the maximum continuous reverse current the BZX284-B47,115 can handle?
The BZX284-B47,115 does not specify a maximum continuous reverse current; instead, its safe operating area is defined by power dissipation. At 25 °C ambient, it supports up to ~8.5 mA continuous reverse current (400 mW ÷ 47 V) before exceeding Ptot. Derating is required above 25 °C per the 315 K/W thermal resistance.
Is the BZX284-B47,115 RoHS compliant?
Yes-the BZX284-B47,115 is RoHS compliant per NXP's product documentation and meets EU Directive 2011/65/EU. It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is qualified for lead-free reflow soldering per JEDEC J-STD-020.
How does the temperature coefficient affect regulation accuracy of the BZX284-B47,115?
The BZX284-B47,115 has a typical temperature coefficient of +30 mV/K at IZ = 2 mA, meaning its Zener voltage increases by ~1.4 V over a 47 °C rise (e.g., 25 °C to 72 °C). This must be factored into system-level accuracy budgets-especially in unregulated ambient environments-and can be compensated using complementary diodes or resistive networks.
BZX284-B47,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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-B47,115 FAQ
1.How can I place an order for BZX284-B47,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-B47,115 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-B47,115 reliable?
The price and inventory of BZX284-B47,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-B47,115 is usually 5 days.
3.What payment methods are accepted for BZX284-B47,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B47,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B47,115?
BZX284-B47,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-B47,115 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-B47,115?
For technical support, including BZX284-B47,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B47,115 requirements.
6.How does Aetrix verify that BZX284-B47,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-B47,115 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-B47,115 meets industry standards.
7.What is the process for return or replacement of BZX284-B47,115?
All BZX284-B47,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-B47,115, 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-B47,115 part is unused and in its original packaging.
Return procedure for BZX284-B47,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-B47,115 Tags
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