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NXP Semiconductors BZX284-C43,115
- Part No.:
- BZX284-C43,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-C43,115.pdf
- Description:
- DIODE ZENER 43V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:4,938
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Product details
Overview
BZX284-C43,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 43 V nominal working voltage at 2 mA test current, 400 mW total power dissipation, and 315 K/W junction-to-ambient thermal resistance-used for precision low-power voltage reference and overvoltage clamping in sensor signal conditioning circuits.
For engineers reviewing the BZX284-C43,115 datasheet, BZX284-C43,115 pinout, BZX284-C43,115 application, or BZX284-C43,115 equivalent, this device serves as a stable, low-capacitance (56 pF at 1 MHz, VR = 0 V) Zener reference with 30–80 Ω differential resistance and +30 mV/K temperature coefficient-key for analog front-end biasing and supply rail stabilization where tight voltage tolerance and minimal thermal drift are required.
Technical Context
The BZX284-C43,115 operates as a two-terminal reverse-biased Zener diode, conducting in breakdown to maintain a stable 42.1–43.9 V reference across its cathode-anode terminals when reverse current exceeds the knee region. Its SOD110 package enables high-density PCB layout while supporting thermal dissipation up to 400 mW at 25 °C ambient.
Electrical behavior is defined at Tj = 25 °C with specified limits for non-repetitive peak reverse current (0.6 A, tp = 100 μs), reverse current (≤50 nA at VR = 0.7 × VZnom), and forward voltage (≤1.1 V at IF = 100 mA). Junction temperature must remain ≤150 °C for reliable operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 43 V at IZtest = 2 mA - defines primary regulation point for feedback or clamping circuits |
| Voltage Tolerance | ±5% (C-series) - allows 40.0–46.0 V operating window under production variation |
| Differential Resistance (rdif) | 45–325 Ω - determines output impedance and load regulation sensitivity in shunt regulator designs |
| Temperature Coefficient (SZ) | +30 mV/K - quantifies voltage drift per degree Celsius rise, critical for temperature-stable references |
| Diode Capacitance (Cd) | 56 pF at f = 1 MHz, VR = 0 V - impacts high-frequency noise coupling and transient response in filtering applications |
| Total Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - sets maximum continuous power handling before thermal derating applies |
| Junction-to-Ambient Thermal Resistance | 315 K/W - defines temperature rise per watt dissipated on standard 11 × 25 × 1.6 mm PCB |
Pinout & Package
SOD110 is a very small ceramic rectangular 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).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry / reverse bias return path | Connected to lower-potential node in Zener configuration; carries full load current during regulation |
| Cathode (Pin 2) | Zener breakdown terminal / reference output node | Provides stable 43 V reference potential relative to anode; used as voltage clamp or bias source |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD110 ceramic package | Enables high-density placement in space-constrained IoT sensor modules and portable medical devices |
| ±5% voltage tolerance (C-series) | Reduces BOM complexity vs. tighter-tolerance variants while maintaining adequate accuracy for non-critical biasing |
| 400 mW power rating | Supports robust shunt regulation in 3.3 V/5 V/12 V auxiliary rails without external heat sinking |
| 56 pF junction capacitance | Minimizes high-frequency signal distortion in audio preamp and ADC reference circuits |
| +30 mV/K temperature coefficient | Enables predictable thermal compensation when paired with negative-TC components in reference networks |
Applications
| Industrial Sensor Signal Conditioning | USB-C PD Adapter Feedback Network |
|---|---|
|
Use Scenario: Stabilizing bias voltage for bridge-based pressure transducers in factory automation systems. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 43 V reference for op-amp excitation and ratiometric ADC scaling. Use Value: Maintains measurement linearity within ±0.5% full-scale error across −40 to +85 °C ambient due to predictable +30 mV/K TC and low rdif. |
Use Scenario: Clamping secondary-side feedback voltage in isolated 65 W USB-C power adapters. IC Role / Device Role / Timing Role: Overvoltage protection element limiting optocoupler input voltage to prevent controller latch-up. Use Value: Responds within <100 ns to transient surges, absorbing up to 0.6 A non-repetitive peak current without degradation. |
| Automotive Cabin Temperature Module | Programmable Logic Controller (PLC) Input Protection |
|
Use Scenario: Regulating 5 V LDO input rail in thermistor-based cabin temperature sensing nodes. IC Role / Device Role / Timing Role: Shunt regulator maintaining stable 43 V intermediate rail that feeds downstream DC-DC converters. Use Value: Delivers <10 ppm/°C effective stability via thermal coupling to PCB copper pour, leveraging 315 K/W Rth j-a. |
Use Scenario: Protecting 24 V digital input channels against ESD and load dump transients in industrial PLC backplanes. IC Role / Device Role / Timing Role: Low-capacitance voltage clamp placed between field input and Schmitt-trigger buffer. Use Value: Limits voltage overshoot to ≤46 V with <50 nA leakage at 21 V, preserving signal integrity and reducing false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-C43 | Same SOD123 package (2.7 × 1.6 × 1.1 mm), ±5% tolerance, 43 V nominal, but higher rdif (100 Ω typ.) and lower Ptot (500 mW) | Higher thermal resistance (400 K/W) reduces power handling on identical PCB area | Select for cost-sensitive consumer designs where 500 mW margin suffices and SOD123 footprint is preferred |
| Vishay PLZ43 | SOD123 package, ±5%, 43 V, but tighter rdif (25 Ω max) and lower Cd (45 pF), with 1000 h life test at 85 °C/85% RH | Enhanced reliability qualification supports automotive-grade deployments beyond AEC-Q200 basic screening | Select when extended lifetime under humid conditions or lower dynamic impedance is prioritized over legacy footprint compatibility |
Compared with BZX284-C43,115, BZT52-C43 offers higher power headroom but requires PCB layout revision due to larger SOD123 footprint and thermal derating, while PLZ43 delivers superior long-term stability and lower noise at the cost of premium pricing and non-drop-in replacement status.
Availability
BZX284-C43,115 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C PD adapter feedback networks, automotive cabin temperature modules, and programmable logic controller input protection requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX284-C43,115 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 family of low-power, high-precision Zener diodes targeting compact, thermally efficient voltage reference and clamping functions in space-constrained embedded systems.
FAQ
What is the nominal Zener voltage and test condition for BZX284-C43,115?
The BZX284-C43,115 has a nominal Zener voltage of 43 V, measured at a test current (IZtest) of 2 mA under Tj = 25 °C conditions. The actual working voltage range is 40.0–46.0 V due to its ±5% tolerance. This specification ensures predictable regulation behavior in shunt reference and overvoltage clamp configurations where precise voltage thresholds are required.
What package type and dimensions does BZX284-C43,115 use?
BZX284-C43,115 uses the SOD110 very small ceramic SMD package with dimensions of 2.10 × 1.40 × 1.60 mm (length × width × height). It features a cathode band marking on the top surface and is optimized for high-density PCB layouts in portable and automotive electronics. The package supports thermal resistance of 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB.
How does the temperature coefficient affect BZX284-C43,115 performance in real-world circuits?
The BZX284-C43,115 exhibits a positive temperature coefficient of +30 mV/K, meaning its Zener voltage increases linearly with junction temperature. In practice, this results in ~1.2 V drift over a 40 °C ambient range (e.g., −40 to +85 °C), which must be accounted for in precision reference designs. However, the predictable slope enables active compensation using complementary TC components in high-stability analog subsystems.
What is the maximum non-repetitive peak reverse current rating for BZX284-C43,115?
The BZX284-C43,115 is rated for a non-repetitive peak reverse current (IZSM) of 0.6 A at pulse width tp = 100 μs and Tamb = 25 °C prior to surge. This rating defines its transient overvoltage clamping capability-enabling protection against short-duration spikes in power supply and interface lines without permanent degradation, provided average power remains within the 400 mW limit.
Can BZX284-C43,115 be used in place of BZX284-B43 variants?
No-BZX284-C43,115 and BZX284-B43 are not interchangeable without circuit review. While both share the same nominal 43 V Zener voltage, BZX284-C43,115 has ±5% tolerance (40.0–46.0 V), whereas BZX284-B43 has ±2% (42.1–43.9 V). The tighter tolerance of BZX284-B43 yields lower rdif (45 Ω typ. vs. 30–80 Ω for C-series) and better regulation accuracy, making substitution inappropriate in precision reference applications unless verified for worst-case voltage drift.
BZX284-C43,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 30.1 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-C43,115 FAQ
1.How can I place an order for BZX284-C43,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-C43,115 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-C43,115 reliable?
The price and inventory of BZX284-C43,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-C43,115 is usually 5 days.
3.What payment methods are accepted for BZX284-C43,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-C43,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-C43,115?
BZX284-C43,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-C43,115 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-C43,115?
For technical support, including BZX284-C43,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-C43,115 requirements.
6.How does Aetrix verify that BZX284-C43,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-C43,115 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-C43,115 meets industry standards.
7.What is the process for return or replacement of BZX284-C43,115?
All BZX284-C43,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-C43,115, 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-C43,115 part is unused and in its original packaging.
Return procedure for BZX284-C43,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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