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NXP Semiconductors BZX284-C4V3,115
- Part No.:
- BZX284-C4V3,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-C4V3,115.pdf
- Description:
- DIODE ZENER 4.3V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:9,431
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Product details
Overview
BZX284-C4V3,115 from NXP Semiconductors is a ±5% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 4.3 V nominal working voltage at 5 mA test current, 400 mW total power dissipation, and 3 μA reverse leakage at 1 V reverse bias - used for precision low-power voltage reference and overvoltage protection in sensor signal conditioning circuits.
For engineers reviewing the BZX284-C4V3,115 datasheet, BZX284-C4V3,115 pinout, BZX284-C4V3,115 application, or BZX284-C4V3,115 equivalent, key selection criteria include Zener voltage tolerance (±5%), differential resistance (410–600 Ω), temperature coefficient (−2.5 mV/K), thermal resistance (315 K/W), and SOD110 footprint compatibility with space-constrained PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across load variations by conducting reverse current above its specified Zener breakdown threshold. It exhibits a negative temperature coefficient of −2.5 mV/K at 5 mA, indicating decreasing Zener voltage with rising junction temperature - critical for thermal drift compensation in analog front-ends.
The SOD110 package enables surface-mount assembly on standard PCBs with minimal thermal mass, resulting in a junction-to-ambient thermal resistance of 315 K/W under defined board conditions (11 × 25 × 1.6 mm FR4). Its 3 μA reverse leakage at VR = 1 V supports low-quiescent-current designs in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.21–4.39 V at IZ = 5 mA - defines precise regulation point for 3.3 V/5 V rail clamping and reference generation |
| Tolerance | ±5% - specifies maximum deviation from nominal 4.3 V, suitable for non-critical regulation where cost sensitivity outweighs tight voltage accuracy |
| Differential Resistance (rdif) | 410–600 Ω at IZ = 5 mA - determines output impedance and load regulation error under varying current demand |
| Reverse Leakage (IR) | 3 μA at VR = 1 V - ensures minimal standby current draw in always-on monitoring circuits |
| Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - sets maximum continuous power handling before thermal derating begins |
| Temperature Coefficient (SZ) | −2.5 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius, enabling thermal error budgeting in industrial environments |
| Junction Temperature (Tj) | 150 °C maximum - defines upper thermal limit for reliable long-term operation in enclosed enclosures |
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 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 | Connected to lower-potential node; carries forward current up to 250 mA during transient clamping |
| Cathode (2) | Zener breakdown terminal | Connected to regulated voltage node; sinks reverse current to maintain 4.3 V reference under load |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD110 packaging | Enables high-density PCB layout in compact consumer and IoT devices without sacrificing thermal performance |
| ±5% Zener voltage tolerance | Provides cost-optimized regulation accuracy for applications where tighter tolerances are unnecessary |
| 400 mW power rating | Supports robust transient suppression in 3.3 V logic interfaces without external heat sinking |
| −2.5 mV/K temperature coefficient | Allows predictable voltage drift modeling for calibration routines in automotive cabin sensors |
| 3 μA reverse leakage at 1 V | Minimizes quiescent current in battery-backed real-time clock circuits and low-power wake-up monitors |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs measuring thermistor or strain gauge outputs in factory automation modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 4.3 V bias point for ratiometric measurement circuits. Use Value: Maintains <±1 LSB error across −40 °C to +85 °C ambient due to known temperature coefficient and low leakage. | Use Scenario: Clamping induced transients on USB D+ and D− lines during hot-plug events in embedded host controllers. IC Role / Device Role / Timing Role: Bidirectional ESD and surge suppressor operating in reverse breakdown mode during voltage spikes. Use Value: Limits line voltage to ≤4.6 V during 8 kV contact discharge, preventing PHY layer damage without adding series resistance. |
| Low-Power Microcontroller Reset Circuit | Automotive Cabin Temperature Monitor |
Use Scenario: Generating clean reset signal for ARM Cortex-M0+ MCUs powered from switched DC-DC converters with ripple-sensitive POR thresholds. IC Role / Device Role / Timing Role: Precision voltage threshold detector feeding RC delay network into MCU reset pin. Use Value: Delivers consistent 4.3 V trip point with <10 ms delay variation across supply voltages from 3.0 V to 5.5 V. | Use Scenario: Providing stable reference for NTC-based temperature sensing in HVAC control units exposed to under-dash thermal cycling. IC Role / Device Role / Timing Role: Zener-regulated excitation source for bridge circuit powering thermistor array. Use Value: Enables ±0.5 °C measurement accuracy over −40 °C to +105 °C via compensated drift modeling using documented −2.5 mV/K coefficient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5225B-7-F | Same 4.3 V nominal Zener voltage but ±5% tolerance, 350 mW rating, SOT-23 package | Higher thermal resistance (450 K/W) limits sustained power handling in confined spaces | Select when existing SOT-23 footprint must be retained and peak power remains below 250 mW |
| BZX84-C4V3,215 | Same 4.3 V/±5% spec but in SOT-23 package; higher differential resistance (600–800 Ω) | Reduced regulation stiffness increases output voltage variation under dynamic load steps | Choose for legacy SOT-23 designs where board rework is prohibitive and load current stays below 1 mA |
Compared with MMBZ5225B-7-F and BZX84-C4V3,215, the BZX284-C4V3,115 offers superior thermal performance (315 K/W vs ≥450 K/W) and lower dynamic impedance (410–600 Ω), making it preferable for applications requiring stable regulation under moderate load or elevated ambient temperatures.
Availability
BZX284-C4V3,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection circuits, and low-power microcontroller reset networks requiring stable component supply and long-term obsolescence management.
Supply support for BZX284-C4V3,115 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 developed for high-reliability, low-power voltage regulation in space-constrained SMD applications - emphasizing stable Zener characteristics, ceramic package robustness, and wide operating temperature range compliance.
FAQ
What is the Zener voltage tolerance of the BZX284-C4V3,115?
The BZX284-C4V3,115 has a ±5% Zener voltage tolerance, meaning its nominal 4.3 V breakdown voltage falls between 4.0 V and 4.6 V at 5 mA test current. This tolerance level balances cost efficiency with sufficient accuracy for general-purpose regulation tasks such as reference generation and overvoltage clamping in non-critical circuits where tighter specs are unnecessary.
Does the BZX284-C4V3,115 require a heatsink for standard operation?
No, the BZX284-C4V3,115 does not require an external heatsink under typical conditions. With a 400 mW power rating and 315 K/W junction-to-ambient thermal resistance on a standard PCB, it safely dissipates full-rated power at ambient temperatures up to 75 °C. Derating begins above this point, but most applications - including USB line protection and sensor biasing - operate well within safe thermal margins without added thermal management.
How does the temperature coefficient affect BZX284-C4V3,115 performance in automotive environments?
The BZX284-C4V3,115 has a temperature coefficient of −2.5 mV/K at 5 mA, causing its Zener voltage to decrease by approximately 0.25 V over a 100 °C range (−40 °C to +60 °C). In automotive cabin temperature monitors, this predictable drift allows firmware-based compensation, preserving measurement accuracy without additional hardware - a key advantage over uncharacterized or zero-TC alternatives.
Can the BZX284-C4V3,115 be used for ESD protection on high-speed data lines?
Yes, the BZX284-C4V3,115 is suitable for basic ESD protection on low-speed or medium-speed data lines like I²C or UART, where its 4.3 V breakdown voltage clamps transients before damaging downstream receivers. However, its 350 pF diode capacitance (typical at 0 V) makes it unsuitable for USB 2.0 or HDMI; for those, dedicated low-capacitance TVS diodes with sub-1 pF ratings are recommended instead of the BZX284-C4V3,115.
What is the maximum reverse leakage current for BZX284-C4V3,115 at 1 V bias?
The maximum reverse leakage current for BZX284-C4V3,115 at VR = 1 V is 3 μA, measured at Tj = 25 °C. This low leakage supports energy-efficient designs such as battery-powered sensor nodes and always-on wake-up circuits, where cumulative standby current must remain below 10 μA to achieve multi-year operational life on coin-cell batteries.
BZX284-C4V3,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 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-C4V3,115 FAQ
1.How can I place an order for BZX284-C4V3,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-C4V3,115 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-C4V3,115 reliable?
The price and inventory of BZX284-C4V3,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-C4V3,115 is usually 5 days.
3.What payment methods are accepted for BZX284-C4V3,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-C4V3,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-C4V3,115?
BZX284-C4V3,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-C4V3,115 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-C4V3,115?
For technical support, including BZX284-C4V3,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-C4V3,115 requirements.
6.How does Aetrix verify that BZX284-C4V3,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-C4V3,115 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-C4V3,115 meets industry standards.
7.What is the process for return or replacement of BZX284-C4V3,115?
All BZX284-C4V3,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-C4V3,115, 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-C4V3,115 part is unused and in its original packaging.
Return procedure for BZX284-C4V3,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-C4V3,115 Tags
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MM5Z5V1ST1G
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