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NXP Semiconductors BZX284-C22,115
- Part No.:
- BZX284-C22,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-C22,115.pdf
- Description:
- DIODE ZENER 22V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:9,750
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Product details
Overview
BZX284-C22,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 22 V nominal working voltage at 5 mA test current, 400 mW total power dissipation, and 30 Ω typical differential resistance at 5 mA. It serves as a precision low-power voltage reference in power supply feedback paths, overvoltage protection circuits, and analog signal conditioning stages.
For engineers reviewing the BZX284-C22,115 datasheet, BZX284-C22,115 pinout, BZX284-C22,115 application, or BZX284-C22,115 equivalent, key selection considerations include its 22 V Zener voltage tolerance (±5%), SOD110 footprint compatibility, thermal resistance of 315 K/W, and reverse leakage of ≤1.25 A non-repetitive peak surge capability.
Technical Context
The BZX284-C22,115 operates as a two-terminal silicon junction diode optimized for stable reverse-bias breakdown regulation. Its Zener mechanism dominates in the 22 V range, with temperature coefficient of +18.4 mV/K at 5 mA - indicating positive drift with rising temperature, requiring compensation in high-precision references.
Designed for surface-mount assembly on standard PCBs (11 × 25 × 1.6 mm), it delivers regulated voltage under DC or low-frequency transient conditions, with capacitance of 84 pF at 0 V and 1 MHz, limiting suitability for RF bypass but supporting audio and control-loop applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.6–22.4 V at IZ = 5 mA - defines nominal regulation point with ±5% tolerance band. |
| Differential Resistance (rdiff) | 30 Ω (typ), 250 Ω (max) at IZ = 5 mA - determines output impedance and load regulation error. |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - sets maximum continuous DC power handling before thermal derating. |
| Reverse Leakage (IR) | ≤100 nA at VR = 15.4 V (0.7 × VZnom) - ensures minimal quiescent current in standby regulation. |
| Thermal Resistance (Rth j-a) | 315 K/W - indicates junction-to-ambient heat transfer efficiency on standard FR4 PCB. |
| Capacitance (Cd) | 84 pF at f = 1 MHz, VR = 0 V - affects high-frequency noise filtering and stability in feedback networks. |
| Peak Surge Current (IZSM) | 1.25 A for tp = 100 μs - supports transient overvoltage clamping without failure. |
Pinout & Package
SOD110 is a very small ceramic rectangular surface-mounted package with two terminals: anode (pin 1) and cathode (pin 2), marked by a cathode band on the top surface. The package measures 1.90–2.10 mm in length, 1.10–1.40 mm in width, and 1.6 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Forward current entry / reverse bias reference ground | Connected to lower-potential node in Zener configuration; establishes reference return path. |
| Cathode (2) | Zener voltage output / reverse bias input | Provides regulated 22 V output when reverse biased; polarity must match PCB silkscreen marking. |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables cost-effective voltage referencing where tight regulation is not critical, e.g., power rail monitoring. |
| 400 mW power rating in SOD110 | Supports higher current regulation than smaller packages (e.g., SOD323), enabling use in 5–10 mA reference sinks. |
| +18.4 mV/K tempco at 5 mA | Allows predictable thermal drift modeling in compensated designs; avoids negative tempco instability seen in lower-voltage Zeners. |
| 84 pF junction capacitance | Permits effective low-pass filtering of ripple up to ~2 MHz without external capacitors in simple shunt regulators. |
| 1.25 A non-repetitive surge rating | Provides robustness against ESD and line transients in industrial I/O protection circuits without added TVS devices. |
Applications
| Power Supply Feedback | Overvoltage Protection |
|---|---|
|
Use Scenario: Shunt regulation in isolated flyback converter feedback loop using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Zener reference establishing precise 22 V threshold for TL431-like comparator action. Use Value: Maintains ±1.5% output voltage accuracy across 0–70 °C due to known tempco and low dynamic impedance. |
Use Scenario: Clamp circuit protecting microcontroller GPIO pins from 24 V field wiring surges. IC Role / Device Role / Timing Role: Passive voltage limiter diverting excess energy to ground during transient events. Use Value: Limits pin voltage to ≤22.4 V with <100 ns response, preventing latch-up without active components. |
| Reference Voltage Source | Signal Level Translation |
|
Use Scenario: Generating stable 22 V reference for ADC input scaling in industrial sensor interface boards. IC Role / Device Role / Timing Role: Precision DC voltage source feeding resistive divider network for full-scale calibration. Use Value: Delivers <50 ppm/°C effective drift after system-level tempco compensation using its documented +18.4 mV/K slope. |
Use Scenario: Biasing op-amp input stage to shift ±10 V analog signal into 0–3.3 V MCU ADC range. IC Role / Device Role / Timing Role: Fixed-voltage clamp defining upper rail for level-shifting resistor network. Use Value: Ensures consistent 22 V ceiling independent of supply variation, enabling repeatable gain and offset calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5248BS-7-F | 22 V ±5%, SOD-323 package, 350 mW rating, 35 Ω rdiff, Rth j-a = 400 K/W | Lower power and higher thermal resistance limit continuous current to ~7 mA vs. 10 mA for BZX284-C22,115 | Select when board space is constrained and thermal margin exceeds 15 °C/W requirement. |
| BZX84-C22 | 22 V ±5%, SOT-23 package, 300 mW rating, 30 Ω rdiff, Rth j-a = 350 K/W, plastic body | Plastic encapsulation reduces moisture sensitivity but increases thermal resistance vs. ceramic SOD110 | Prefer for cost-sensitive consumer designs where long-term reliability under humidity is less critical than price. |
Compared with MMBZ5248BS-7-F and BZX84-C22, the BZX284-C22,115 offers superior thermal performance (315 K/W) and higher surge robustness (1.25 A), making it preferred for industrial power supplies and harsh-environment protection circuits where sustained power dissipation and transient immunity are design priorities.
Availability
BZX284-C22,115 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and programmable logic controller (PLC) I/O protection requiring stable component supply and long-lifecycle support.
Supply support for BZX284-C22,115 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 as a high-reliability, ceramic-packaged Zener family targeting industrial and telecom infrastructure where long-term stability and moisture resistance are critical.
FAQ
What is the Zener voltage tolerance of the BZX284-C22,115?
The BZX284-C22,115 has a nominal Zener voltage of 22 V with a ±5% tolerance, meaning its actual breakdown voltage falls between 20.8 V and 23.2 V at 5 mA test current. This tolerance is confirmed in Table 1 of the NXP datasheet and applies specifically to the "C" series variant. The BZX284-C22,115 is not rated for ±2% tolerance - that specification belongs exclusively to the "B" series (e.g., BZX284-B22).
Can the BZX284-C22,115 be used in place of the BZX284-B22?
No - the BZX284-C22,115 and BZX284-B22 are not interchangeable without design review. While both regulate near 22 V, the BZX284-B22 has ±2% tolerance (21.6–22.4 V), whereas the BZX284-C22,115 has ±5% (20.8–23.2 V). Their differential resistance and temperature coefficients also differ: BZX284-B22 specifies 25 Ω typ vs. 30 Ω for BZX284-C22,115. Substitution may degrade regulation accuracy in precision circuits.
What is the maximum continuous reverse current the BZX284-C22,115 can handle?
The BZX284-C22,115 supports a maximum continuous forward current of 250 mA, but as a Zener diode operating in reverse breakdown, its safe continuous reverse current is determined by power dissipation limits. At 25 °C ambient, it can sustain ~18.2 mA continuously (400 mW ÷ 22 V) before exceeding its 400 mW Ptot rating. Derating is required above 25 °C per the 315 K/W thermal resistance.
Does the BZX284-C22,115 have a specified junction-to-case thermal resistance?
No - the official NXP datasheet for BZX284-C22,115 only specifies junction-to-ambient thermal resistance (Rth j-a = 315 K/W) under defined PCB mounting conditions (11 × 25 × 1.6 mm FR4). Junction-to-case (Rth j-c) is not published for this SOD110 ceramic package, and no thermal pad or metal slug exists to support case-based heatsinking. Thermal design must rely solely on PCB copper area and ambient convection.
Is the BZX284-C22,115 suitable for high-frequency noise suppression?
The BZX284-C22,115 has a junction capacitance of 84 pF at 0 V and 1 MHz, making it moderately effective for filtering low-frequency ripple (<500 kHz) but unsuitable for RF noise suppression above ~2 MHz. Its 30 Ω dynamic impedance and lack of specified high-frequency impedance profile limit effectiveness in GHz-range EMI mitigation - dedicated RF capacitors or TVS diodes are recommended for those applications.
BZX284-C22,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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-C22,115 FAQ
1.How can I place an order for BZX284-C22,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-C22,115 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-C22,115 reliable?
The price and inventory of BZX284-C22,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-C22,115 is usually 5 days.
3.What payment methods are accepted for BZX284-C22,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-C22,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-C22,115?
BZX284-C22,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-C22,115 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-C22,115?
For technical support, including BZX284-C22,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-C22,115 requirements.
6.How does Aetrix verify that BZX284-C22,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-C22,115 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-C22,115 meets industry standards.
7.What is the process for return or replacement of BZX284-C22,115?
All BZX284-C22,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-C22,115, 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-C22,115 part is unused and in its original packaging.
Return procedure for BZX284-C22,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-C22,115 Tags
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