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NXP Semiconductors BZX284-B15,115
- Part No.:
- BZX284-B15,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B15,115.pdf
- Description:
- DIODE ZENER 15V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:6,510
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Product details
Overview
BZX284-B15,115 from NXP Semiconductors is a ±2% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 15 V nominal working voltage at 5 mA test current, 400 mW total power dissipation, and 25 Ω typical differential resistance at 5 mA - used for precision low-power voltage reference and regulation in sensor signal conditioning circuits.
For engineers reviewing the BZX284-B15,115 datasheet, BZX284-B15,115 pinout, BZX284-B15,115 application, or BZX284-B15,115 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (315 K/W), reverse leakage (≤50 nA at 10.5 V), junction temperature limit (150 °C), and SOD110 footprint compatibility with space-constrained PCB layouts.
Technical Context
The BZX284-B15,115 operates as a two-terminal silicon Zener diode optimized for stable reverse-bias voltage regulation. Its 15 V nominal Zener voltage is specified at IZtest = 5 mA with ±2% tolerance, and it exhibits a positive temperature coefficient of +11.4 mV/K at that current, enabling predictable drift behavior in temperature-varying environments.
Designed for surface-mount use on standard FR-4 PCBs (11 × 25 × 1.6 mm), the device relies on its 315 K/W junction-to-ambient thermal resistance and 150 °C maximum junction temperature to sustain regulated operation under continuous 400 mW power dissipation - with reverse leakage capped at 50 nA when biased at 0.7 × VZnom (10.5 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.7–15.3 V at IZ = 5 mA; ensures tight regulation window for 15 V rail stabilization |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C; defines maximum continuous thermal load without derating |
| Differential Resistance (rdiff) | 25 Ω typical at 5 mA; determines output impedance and load regulation sensitivity |
| Reverse Leakage (IR) | ≤50 nA at VR = 10.5 V (0.7 × VZnom); minimizes quiescent current in high-impedance bias networks |
| Temperature Coefficient (SZ) | +11.4 mV/K at 5 mA; quantifies voltage drift per degree Celsius for thermal design margining |
| Junction Temperature (Tj) | 150 °C maximum; sets upper thermal operating limit for reliability under sustained power |
| Package | SOD110 ceramic SMD; 2.1 × 1.4 × 1.6 mm footprint with cathode marking for automated assembly |
Pinout & Package
SOD110 is a two-terminal surface-mount ceramic package with cathode identified by a mark on the top surface. The device has no polarity-insensitive terminals - Pin 1 is anode, Pin 2 is cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Zener breakdown terminal / high-side connection | Connected to regulated voltage node; marked side faces component identification |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation accuracy than ±5% variants, reducing need for post-regulation trimming |
| 400 mW power rating | Supports higher current reference applications without external heat sinking on standard PCBs |
| SOD110 ceramic package | Provides superior moisture resistance and long-term stability vs. plastic SMD packages |
| Low 50 nA reverse leakage at 10.5 V | Minimizes error in high-impedance voltage divider or op-amp feedback networks |
| +11.4 mV/K temperature coefficient | Allows predictable compensation in temperature-critical analog front-ends |
Applications
| Industrial Sensor Signal Conditioning | Portable Device Power Rail Clamping |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADCs in pressure or temperature transmitters operating across −40 to +85 °C. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 15 V bias to op-amp gain stages and ADC reference buffers. Use Value: ±2% tolerance and +11.4 mV/K TC enable <1.2% full-scale error over temperature without calibration. | Use Scenario: Protecting 15 V logic rails in handheld medical monitors against transient overvoltage events. IC Role / Device Role / Timing Role: Low-energy clamping diode shunting surge currents above 15 V to ground during ESD or load-dump events. Use Value: 400 mW rating and 25 Ω dynamic impedance ensure fast response and minimal voltage overshoot during 100 μs surges. |
| Automotive Body Control Module Reference | IoT Node Battery Monitoring Circuit |
Use Scenario: Generating stable 15 V reference for microcontroller reset supervisor ICs in 24 V vehicle subsystems. IC Role / Device Role / Timing Role: Precision Zener supplying clean, temperature-compensated voltage to voltage-monitor comparators. Use Value: Ceramic SOD110 package withstands automotive thermal cycling and humidity without parameter shift. | Use Scenario: Scaling lithium-ion battery voltage (3.0–4.2 V/cell) into 0–15 V range for analog battery gauge IC input. IC Role / Device Role / Timing Role: Fixed 15 V clamp limiting divider output to prevent overvoltage damage to gauge input pins. Use Value: 50 nA leakage ensures <1 μA total divider current, extending coin-cell battery life beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245B,115 | Same 15 V ±5% rating but in SOT-23 plastic package; 900 mW Ptot; 17 Ω rdiff | Higher power handling but looser tolerance and inferior long-term stability in humid environments | Select when higher surge capability is needed and ±5% regulation is acceptable |
| BZX84-C15,115 | 15 V ±5% in SOT-23; 300 mW Ptot; 30 Ω rdiff; plastic package | Lower cost and smaller footprint, but reduced thermal performance and moisture resistance | Select for cost-sensitive consumer applications where ±5% tolerance suffices |
Compared with BZX284-B15,115, MMBZ5245B,115 offers higher surge robustness but sacrifices voltage accuracy and environmental stability, while BZX84-C15,115 trades regulation precision and thermal margin for compact size and lower unit cost.
Availability
BZX284-B15,115 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable device power rail clamping, and automotive body control module reference applications requiring stable component supply and long-term parametric consistency.
Supply support for BZX284-B15,115 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 specifically for high-stability, low-power voltage regulation in space-constrained SMD applications - emphasizing ceramic packaging integrity, tight tolerance options, and predictable thermal behavior across extended temperature ranges.
FAQ
What is the Zener voltage tolerance of the BZX284-B15,115?
The BZX284-B15,115 has a ±2% Zener voltage tolerance, meaning its nominal 15 V regulation point falls between 14.7 V and 15.3 V when tested at 5 mA. This tighter tolerance enables higher accuracy in reference and regulation circuits compared to ±5% variants like the BZX284-C15,115, and is confirmed in Table 1 of the NXP datasheet.
What package type does the BZX284-B15,115 use?
The BZX284-B15,115 uses the SOD110 package - a very small ceramic surface-mount outline measuring 2.1 × 1.4 × 1.6 mm with a cathode marking. Its ceramic construction provides superior moisture resistance and long-term parameter stability versus plastic alternatives such as SOT-23, as documented in the Package Outline section of the NXP datasheet.
What is the maximum power dissipation for the BZX284-B15,115?
The BZX284-B15,115 has a maximum total power dissipation of 400 mW at ambient temperature of 25 °C, as specified in the Limiting Values table. This rating assumes mounting on a standard 11 × 25 × 1.6 mm PCB; derating is required above 25 °C based on its 315 K/W junction-to-ambient thermal resistance.
How does the temperature coefficient affect the BZX284-B15,115's performance?
The BZX284-B15,115 has a temperature coefficient of +11.4 mV/K at 5 mA, meaning its Zener voltage increases by approximately 11.4 mV per degree Celsius rise in junction temperature. This positive coefficient is critical for predicting regulation drift in thermally varying environments and is explicitly listed in Table 1 of the NXP datasheet for the BZX284-B15 variant.
What is the reverse leakage current specification for the BZX284-B15,115?
The BZX284-B15,115 specifies a maximum reverse leakage current of 50 nA when reverse-biased at 10.5 V (0.7 × VZnom), per the Electrical Characteristics table. This ultra-low leakage supports high-impedance bias networks and precision voltage dividers without introducing measurable error - a key advantage over higher-leakage Zener alternatives.
BZX284-B15,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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-B15,115 FAQ
1.How can I place an order for BZX284-B15,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-B15,115 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-B15,115 reliable?
The price and inventory of BZX284-B15,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-B15,115 is usually 5 days.
3.What payment methods are accepted for BZX284-B15,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B15,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B15,115?
BZX284-B15,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-B15,115 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-B15,115?
For technical support, including BZX284-B15,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B15,115 requirements.
6.How does Aetrix verify that BZX284-B15,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-B15,115 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-B15,115 meets industry standards.
7.What is the process for return or replacement of BZX284-B15,115?
All BZX284-B15,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-B15,115, 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-B15,115 part is unused and in its original packaging.
Return procedure for BZX284-B15,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-B15,115 Tags
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