My Inquiry
My Account
NXP Semiconductors BZX284-C20,115
- Part No.:
- BZX284-C20,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-C20,115.pdf
- Description:
- DIODE ZENER 20V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:6,270
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX284-C20,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 20 V nominal working voltage at 5 mA test current, 400 mW total power dissipation, and 1.5 A non-repetitive peak reverse surge current; used for low-power voltage reference and overvoltage protection in space-constrained consumer and industrial power rails.
For engineers reviewing the BZX284-C20,115 datasheet, BZX284-C20,115 pinout, BZX284-C20,115 application, or BZX284-C20,115 equivalent, this page delivers verified electrical parameters, thermal resistance (315 K/W), differential resistance (≤225 Ω), temperature coefficient (+16.4 mV/K), and reverse leakage (≤200 nA at 7 V), critical for precision biasing and stable regulation in battery-powered and automotive subsystems.
Technical Context
The BZX284-C20,115 operates as a two-terminal silicon Zener diode with controlled reverse breakdown behavior, optimized for stable DC voltage regulation under low-current conditions (IZtest = 5 mA). Its junction temperature range spans −65 °C to +150 °C, and it exhibits a positive temperature coefficient of +16.4 mV/K - indicating increasing Zener voltage with rising temperature - making it suitable for temperature-compensated reference designs when paired with negative-TC components.
Designed for surface-mount assembly on standard PCBs (11 × 25 × 1.6 mm), the device relies on its SOD110 ceramic package for mechanical robustness and thermal performance, with a thermal resistance from junction to ambient of 315 K/W. Its low reverse leakage (≤200 nA at VR = 7 V) and tight ±5% tolerance support reliable operation in low-power sensor biasing and microcontroller reset circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 20 V at IZ = 5 mA - defines precise regulation point for 3.3 V/5 V rail monitoring and reference generation |
| Tolerance | ±5% - ensures predictable voltage margin for cost-sensitive applications where tighter tolerance is not required |
| Total Power Dissipation | 400 mW at Tamb = 25 °C - supports continuous regulation in low-power circuits without forced cooling |
| Differential Resistance | ≤225 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity in shunt regulator topologies |
| Temperature Coefficient | +16.4 mV/K - enables predictable drift compensation in mixed-TC reference networks |
| Reverse Leakage Current | ≤200 nA at VR = 7 V - minimizes quiescent current draw in battery-backed systems |
| Thermal Resistance | 315 K/W - informs PCB copper area requirements for thermal management in enclosed environments |
Pinout & Package
SOD110 is a very small ceramic rectangular surface-mounted package with cathode identifier marked on top surface. Dimensions: 2.10 × 1.40 × 1.60 mm (L × W × H), with 0.1 mm maximum lead protrusion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (1) | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in shunt regulation; carries forward current up to 250 mA |
| Cathode (2) | Zener breakdown terminal / high-side connection | Connected to regulated voltage node; sustains reverse breakdown at 20 V ±5% with controlled dynamic impedance |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD packaging | SOD110 footprint (2.1 × 1.4 mm) enables placement in ultra-dense PCB layouts for portable electronics |
| Stable ±5% voltage tolerance | Guarantees consistent regulation across production batches without post-assembly trimming |
| Controlled temperature coefficient | +16.4 mV/K allows predictable drift modeling for reference stability over −40 °C to +85 °C operating range |
| Low reverse leakage | ≤200 nA at 7 V supports multi-year battery life in always-on IoT sensor nodes |
| High surge capability | 1.5 A non-repetitive peak reverse current (tp = 100 μs) provides transient overvoltage clamping without failure |
Applications
| Power Supply Rail Monitoring | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Monitoring 24 V industrial supply rail for undervoltage detection before system startup. IC Role / Device Role / Timing Role: Shunt regulator providing stable 20 V reference to comparator input. Use Value: Enables accurate trip-point setting with ±5% tolerance and minimal drift over temperature, reducing false resets. | Use Scenario: Generating clean reset signal for ARM Cortex-M0+ MCU during cold boot. IC Role / Device Role / Timing Role: Zener-clamped RC delay network defining reset pulse width and threshold. Use Value: Low leakage (≤200 nA) preserves capacitor charge integrity, ensuring deterministic reset timing across wide temperature ranges. |
| LED Current Biasing | ADC Reference Stabilization |
Use Scenario: Setting constant bias current for white LED string in automotive interior lighting. IC Role / Device Role / Timing Role: Series Zener reference in current-source feedback loop. Use Value: 20 V rating accommodates forward voltage headroom; ±5% tolerance aligns with LED binning tolerances. | Use Scenario: Providing stable 2.048 V reference for 12-bit SAR ADC in data acquisition module. IC Role / Device Role / Timing Role: Precision shunt reference scaled via resistor divider. Use Value: Differential resistance ≤225 Ω ensures minimal reference droop under ADC input loading, preserving ENOB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242B-7-F | 20 V ±5%, SOT-23 package, Ptot = 350 mW, rdif = 23 Ω typical | Lower dynamic impedance but higher thermal resistance (450 K/W); requires larger PCB copper for same power handling | Select for improved regulation accuracy where board space permits SOT-23 and thermal design accommodates higher Rth |
| BZX84-C20 | 20 V ±5%, SOT-23 package, Ptot = 300 mW, rdif = 50 Ω typical, Tj max = 150 °C | Lower power rating and smaller package footprint; less robust under surge conditions (IZSM = 1.0 A) | Choose for cost-sensitive, low-surge applications where 300 mW dissipation suffices and SOT-23 is preferred |
Compared with BZX284-C20,115, MMBZ5242B-7-F offers tighter regulation but demands more careful thermal layout, while BZX84-C20 reduces size and cost at the expense of surge immunity and power handling - guiding selection based on thermal budget, reliability requirements, and PCB real estate constraints.
Availability
BZX284-C20,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and consumer power management systems requiring stable component supply and long-term manufacturability.
Supply support for BZX284-C20,115 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 belongs to NXP's discrete voltage regulator portfolio, engineered for high-reliability, low-power Zener regulation in space-constrained SMD designs where ceramic package robustness and stable parametric performance are essential.
FAQ
What is the nominal Zener voltage and test condition for BZX284-C20,115?
The BZX284-C20,115 has a nominal Zener voltage of 20 V measured at a test current (IZtest) of 5 mA, with a guaranteed tolerance of ±5%. This value is specified under junction temperature conditions of 25 °C and reflects the device's primary regulation point in shunt configuration. The BZX284-C20,115 maintains this voltage with differential resistance ≤225 Ω, supporting stable operation in precision biasing applications.
What is the maximum power dissipation and thermal resistance of BZX284-C20,115?
The BZX284-C20,115 has a maximum total power dissipation of 400 mW at ambient temperature of 25 °C, with a thermal resistance from junction to ambient (Rth j-a) of 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB. This means that at full 400 mW dissipation, the junction temperature rise above ambient is approximately 126 °C - requiring derating above 25 °C ambient to stay within the 150 °C absolute maximum junction temperature limit. The BZX284-C20,115 must be applied with appropriate PCB copper area to manage thermal load.
How does the temperature coefficient of BZX284-C20,115 affect its regulation stability?
The BZX284-C20,115 exhibits a positive temperature coefficient of +16.4 mV/K at IZ = 5 mA, meaning its Zener voltage increases linearly with junction temperature. This behavior is characteristic of higher-voltage Zeners and must be accounted for in applications requiring tight regulation across wide temperature ranges (e.g., −40 °C to +85 °C), where a 100 °C span introduces ~1.64 V drift. The BZX284-C20,115 is often paired with negative-TC components in compensated references to mitigate this effect.
What is the reverse leakage current specification for BZX284-C20,115 and at what voltage is it measured?
The reverse leakage current for BZX284-C20,115 is specified as ≤200 nA at VR = 7 V and Tamb = 25 °C. This low leakage supports energy-efficient operation in battery-powered systems and ensures minimal error contribution when used as a reference in high-impedance circuits. The BZX284-C20,115 achieves this performance through optimized silicon processing and ceramic packaging, maintaining consistency across production lots without screening.
Is BZX284-C20,115 suitable for surge protection applications, and what is its peak reverse current rating?
Yes, the BZX284-C20,115 is rated for non-repetitive peak reverse current (IZSM) of 1.5 A at pulse width tp = 100 μs and ambient temperature of 25 °C, making it suitable for transient overvoltage clamping in low-energy circuits. This rating enables the BZX284-C20,115 to absorb short-duration surges - such as ESD or inductive kickback - without degradation, provided average power remains within 400 mW limits and thermal recovery time is observed between events.
BZX284-C20,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 14 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-C20,115 FAQ
1.How can I place an order for BZX284-C20,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-C20,115 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-C20,115 reliable?
The price and inventory of BZX284-C20,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-C20,115 is usually 5 days.
3.What payment methods are accepted for BZX284-C20,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-C20,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-C20,115?
BZX284-C20,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-C20,115 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-C20,115?
For technical support, including BZX284-C20,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-C20,115 requirements.
6.How does Aetrix verify that BZX284-C20,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-C20,115 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-C20,115 meets industry standards.
7.What is the process for return or replacement of BZX284-C20,115?
All BZX284-C20,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-C20,115, 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-C20,115 part is unused and in its original packaging.
Return procedure for BZX284-C20,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-C20,115 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
