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NXP Semiconductors BZX284-C24,115
- Part No.:
- BZX284-C24,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-C24,115.pdf
- Description:
- DIODE ZENER 24V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:3,939
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Product details
Overview
BZX284-C24,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in SOD110 ceramic SMD package, rated for 24 V nominal working voltage at 5 mA test current, 400 mW total power dissipation, and 30 Ω typical differential resistance at 5 mA - used for precision low-power voltage reference and overvoltage clamping in sensor signal conditioning circuits.
For engineers reviewing the BZX284-C24,115 datasheet, BZX284-C24,115 pinout, BZX284-C24,115 application, or BZX284-C24,115 equivalent, key selection criteria include its ±5% voltage tolerance, 20.4 V minimum / 25.6 V maximum Zener voltage range, 30–250 Ω differential resistance depending on operating current, and thermal resistance of 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB.
Technical Context
The BZX284-C24,115 operates as a reverse-biased silicon Zener diode with stable breakdown behavior across its specified current range (1–10 mA), exhibiting a positive temperature coefficient of +6 mV/K at 5 mA test current. Its low 1.25 A non-repetitive peak reverse surge current rating supports transient suppression in low-energy circuits.
Designed for surface-mount assembly in space-constrained applications, it uses a two-terminal SOD110 ceramic package with cathode marking, requiring no external biasing components and delivering predictable regulation without active control circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal at IZ = 5 mA; min 22.8 V, max 25.6 V - defines regulated output voltage under standard test conditions |
| Tolerance | ±5% - specifies allowable deviation from nominal Zener voltage across production lot |
| Differential Resistance (rdiff) | 30 Ω typical at IZ = 5 mA; max 250 Ω - determines regulation stiffness and output impedance |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - sets maximum continuous DC power handling before thermal derating |
| Reverse Current (IR) | 50 nA max at VR = 0.7 × VZnom = 16.8 V - ensures low leakage in standby or high-impedance sensing nodes |
| Thermal Resistance (Rth j-a) | 315 K/W - indicates junction-to-ambient heat transfer efficiency on standard PCB mounting |
| Package | SOD110 - ultra-small ceramic SMD outline (2.1 × 1.4 × 1.6 mm) with cathode identifier |
Pinout & Package
SOD110 is a two-terminal surface-mount ceramic package with cathode marked by a band on one end. The device has no polarity-sensitive pins beyond anode and cathode terminals; orientation follows standard diode symbol layout with cathode terminal designated for connection to regulated node or ground reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Reference/ground return path | Connected to lower potential side of regulation loop; carries forward current during conduction |
| Cathode (2) | Regulated output node | Provides stable Zener voltage referenced to anode; marked with band on top surface |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD packaging | SOD110 footprint (2.1 × 1.4 mm) enables placement in dense PCB layouts without height interference |
| Stable Zener voltage range | 24 V ±5% tolerance ensures predictable clamping level for 24 V rail protection and reference generation |
| Controlled dynamic impedance | 30 Ω typical rdiff minimizes output voltage shift under varying load currents in feedback networks |
| Low leakage performance | <50 nA reverse current at 16.8 V enables use in high-impedance analog front-ends without signal corruption |
| Robust surge capability | 1.25 A non-repetitive peak reverse current supports ESD and transient event absorption per IEC 61000-4-2 |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., pressure or temperature transducers) in factory automation systems. IC Role / Device Role / Timing Role: Zener diode providing fixed 24 V reference to sensor bridge supply, replacing higher-cost IC references where ±5% accuracy suffices. Use Value: Enables cost-effective, space-efficient voltage stabilization with <50 nA leakage to preserve bridge balance and measurement resolution. | Use Scenario: Clamping CAN bus node supply rails against load-dump transients in automotive interior lighting controllers. IC Role / Device Role / Timing Role: Standalone overvoltage clamp protecting 24 V input stage of microcontroller power management ICs. Use Value: Absorbs up to 1.25 A surge pulses without degradation, maintaining system uptime during battery disconnection events. |
| Programmable Logic Controller I/O Protection | Medical Diagnostic Equipment Power Monitoring |
Use Scenario: Protecting digital input optocouplers from field-wiring induced voltage spikes in industrial PLC backplanes. IC Role / Device Role / Timing Role: Reverse-biased Zener shunt limiting input voltage to safe levels for 24 V logic interface circuits. Use Value: Provides fast, passive clamping with 30 Ω dynamic impedance to limit overshoot within 100 ns response window. | Use Scenario: Generating stable reference for ADC monitoring of isolated 24 V auxiliary power supplies in portable ultrasound units. IC Role / Device Role / Timing Role: Low-leakage Zener source feeding precision resistor divider network for analog-to-digital conversion. Use Value: Delivers <50 nA reverse current at 16.8 V to prevent offset errors in 16-bit medical-grade ADC measurements. |
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-C24 | Same SOD-123 package; ±5% tolerance; 24 V nominal; 500 mW Ptot; 60 Ω rdiff typ. | Higher power rating allows greater surge margin but larger footprint; higher rdiff reduces regulation precision | Select when board layout permits SOD-123 and higher surge energy must be absorbed without derating. |
| Vishay BZX84-C24 | SOT-23 package; ±5% tolerance; 24 V nominal; 300 mW Ptot; 40 Ω rdiff typ.; different thermal resistance (450 K/W) | Smaller pitch but lower power handling; less thermally robust on standard FR4; requires revalidation of thermal design | Select only if SOT-23 footprint is mandatory and ambient temperature remains below 60 °C with forced airflow. |
Compared with BZX284-C24,115, the BZT52-C24 offers higher surge capacity in a slightly larger package, while the BZX84-C24 trades thermal performance and power rating for smaller size - making the BZX284-C24,115 optimal for space-constrained, thermally stable 24 V regulation where ±5% tolerance and low leakage are prioritized.
Availability
BZX284-C24,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and programmable logic controller I/O protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX284-C24,115 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 developed for low-power, high-reliability voltage regulation in space-constrained SMD designs - targeting cost-sensitive yet performance-critical applications such as sensor excitation, power rail clamping, and reference generation in harsh environments.
FAQ
What is the nominal Zener voltage and tolerance of the BZX284-C24,115?
The BZX284-C24,115 has a nominal Zener voltage of 24 V with a ±5% tolerance, meaning its actual breakdown voltage falls between 22.8 V and 25.6 V when tested at 5 mA. This tolerance is confirmed in Table 1 of the NXP datasheet and applies specifically to the "C" series variant of the BZX284 family. The BZX284-C24,115 is not interchangeable with ±2% "B" variants without recalculating circuit margins.
What package type does the BZX284-C24,115 use and what are its dimensions?
The BZX284-C24,115 uses the SOD110 ceramic surface-mount package, measuring 2.10 × 1.40 × 1.60 mm with a cathode identification band. Its compact size is defined in the "PACKAGE OUTLINE" section of the NXP datasheet (issue date 97-04-14). Unlike plastic SOD-123 or SOT-23 packages, SOD110 offers superior thermal stability and hermeticity for high-reliability applications.
What is the maximum power dissipation and thermal resistance of the BZX284-C24,115?
The BZX284-C24,115 has a maximum total power dissipation of 400 mW at 25 °C ambient temperature and a junction-to-ambient thermal resistance of 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB. These values are specified in the "LIMITING VALUES" and "THERMAL CHARACTERISTICS" sections of the NXP datasheet and directly impact derating curves above 25 °C.
How does the differential resistance of the BZX284-C24,115 affect its regulation performance?
The BZX284-C24,115 exhibits a typical differential resistance of 30 Ω at 5 mA Zener test current, with a maximum of 250 Ω. This parameter determines how much the output voltage changes with load current variation - lower rdiff yields tighter regulation. In practice, this means the BZX284-C24,115 maintains stable voltage under small-signal loads common in sensor biasing and reference divider networks.
Can the BZX284-C24,115 be used for transient voltage suppression in automotive applications?
Yes, the BZX284-C24,115 supports non-repetitive peak reverse current up to 1.25 A for 100 μs pulses, making it suitable for clamping short-duration transients like ISO 7637-2 pulse 1 and pulse 2a in 24 V automotive systems. However, it is not rated for repetitive surges or load-dump events exceeding 100 μs duration - for those, dedicated TVS diodes like P6SMB24CA are recommended alongside the BZX284-C24,115.
BZX284-C24,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 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-C24,115 FAQ
1.How can I place an order for BZX284-C24,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-C24,115 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-C24,115 reliable?
The price and inventory of BZX284-C24,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-C24,115 is usually 5 days.
3.What payment methods are accepted for BZX284-C24,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-C24,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-C24,115?
BZX284-C24,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-C24,115 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-C24,115?
For technical support, including BZX284-C24,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-C24,115 requirements.
6.How does Aetrix verify that BZX284-C24,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-C24,115 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-C24,115 meets industry standards.
7.What is the process for return or replacement of BZX284-C24,115?
All BZX284-C24,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-C24,115, 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-C24,115 part is unused and in its original packaging.
Return procedure for BZX284-C24,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-C24,115 Tags
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