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NXP Semiconductors BZX284-B3V3,115
- Part No.:
- BZX284-B3V3,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B3V3,115.pdf
- Description:
- DIODE ZENER 3.3V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:5,381
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Product details
Overview
BZX284-B3V3,115 from NXP Semiconductors is a ±2% tolerance, 3.3 V Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 400 mW total power dissipation at 25 °C ambient, with 5 μA reverse current at 1 V reverse bias, and designed for low-power precision voltage reference and regulation in space-constrained PCBs.
For engineers reviewing the BZX284-B3V3,115 datasheet, BZX284-B3V3,115 pinout, BZX284-B3V3,115 application, or BZX284-B3V3,115 equivalent, this page delivers verified electrical parameters, thermal resistance (315 K/W), differential resistance (350–500 Ω), temperature coefficient (−2.4 mV/K), and SOD110 package dimensions - all critical for analog reference design, overvoltage clamping, and bias network stability validation.
Technical Context
The BZX284-B3V3,115 operates as a two-terminal silicon Zener diode optimized for stable reverse-breakdown regulation at nominal 3.3 V with tight ±2% tolerance. Its performance is specified at Tj = 25 °C, with test current IZtest = 5 mA, and exhibits a negative temperature coefficient of −2.4 mV/K - indicating decreasing Zener voltage with rising junction temperature.
It features low dynamic impedance (350–500 Ω at 1 mA; 85–95 Ω at 5 mA), minimal junction capacitance (410 pF at 0 V), and is qualified for operation across −65 °C to +150 °C storage temperature, with maximum junction temperature limited to 150 °C under defined PCB mounting conditions (11 × 25 × 1.6 mm FR4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.23 V to 3.37 V at IZ = 5 mA - ensures precise 3.3 V rail referencing within ±2% tolerance for MCU reset circuits and ADC reference buffers. |
| Total Power Dissipation (Ptot) | 400 mW at Tamb = 25 °C - supports continuous regulation in low-power sensor nodes without forced cooling. |
| Differential Resistance (rdif) | 350 Ω at IZ = 1 mA; 85–95 Ω at IZ = 5 mA - determines load regulation error sensitivity; lower rdif improves voltage stability under varying current draw. |
| Reverse Current (IR) | 5 μA at VR = 1 V - defines leakage-induced error in high-impedance bias networks and sets minimum operating current threshold. |
| Temperature Coefficient (SZ) | −2.4 mV/K at IZ = 5 mA - quantifies drift magnitude per degree; enables thermal error budgeting in industrial temperature ranges. |
| Junction-to-Ambient Thermal Resistance (Rth j-a) | 315 K/W on standard 11 × 25 × 1.6 mm PCB - dictates allowable power derating above 25 °C ambient; e.g., max 200 mW at 75 °C ambient. |
| Package | SOD110 ceramic SMD - 2.10 × 1.40 × 1.60 mm footprint with cathode marking; enables high-density placement and reflow compatibility. |
Pinout & Package
SOD110 is a 2-terminal surface-mount ceramic package with cathode identified by a mark on the top surface. Terminals are non-polarized in layout but functionally asymmetric: anode (A) and cathode (K) define unidirectional conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry / Reverse bias return | Connected to lower-potential node in Zener configuration; carries forward current up to 250 mA or reverse leakage current. |
| Cathode (K) | Forward current exit / Zener breakdown terminal | Connected to regulated voltage node; sustains reverse breakdown at 3.3 V; marked on package top surface. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables accurate 3.3 V reference without post-production trimming in power supply feedback paths and comparator thresholds. |
| Low 5 μA reverse leakage at 1 V | Minimizes quiescent current error in high-impedance voltage divider biasing for op-amp inputs or microcontroller IO protection. |
| 315 K/W thermal resistance on standard PCB | Allows predictable derating curves for thermal design in sealed enclosures or elevated ambient environments. |
| SOD110 ceramic package | Provides stable electrical performance across humidity and temperature cycling, unlike epoxy-packaged alternatives. |
| −2.4 mV/K temperature coefficient | Supports predictable drift compensation in analog front-ends where reference stability over −40 to +85 °C is required. |
Applications
| Microcontroller Reset Circuit | ADC Reference Stabilization |
|---|---|
Use Scenario: Generating a clean, temperature-stable 3.3 V reset threshold for ARM Cortex-M0+ microcontrollers in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Zener diode acting as precision voltage threshold detector in RC-based reset generator. Use Value: ±2% tolerance and −2.4 mV/K TC ensure reset assertion remains within 3.2–3.4 V across −40 to +85 °C, preventing spurious resets. | Use Scenario: Providing a stable 3.3 V reference for 12-bit SAR ADCs in portable medical monitors. IC Role / Device Role / Timing Role: Low-leakage (5 μA) Zener shunt regulator establishing reference node for ADC VREF input. Use Value: 85–95 Ω dynamic impedance minimizes reference droop during ADC sampling transients, preserving ENOB. |
| ESD Protection Clamp | Linear Regulator Feedback Divider |
Use Scenario: Clamping transient overvoltage on 3.3 V I²C bus lines exposed to human-body-model ESD events. IC Role / Device Role / Timing Role: Fast-response Zener diode placed between SDA/SCL and ground to limit voltage excursion. Use Value: 410 pF junction capacitance avoids signal integrity degradation at 400 kHz I²C clock rates while clamping >8 kV HBM spikes. | Use Scenario: Setting output voltage of adjustable LDOs (e.g., TLV70033) via resistor divider with Zener-stabilized reference leg. IC Role / Device Role / Timing Role: Shunt regulator fixing one end of feedback divider to improve line/load regulation accuracy. Use Value: 350–500 Ω differential resistance reduces sensitivity to divider resistor tolerance, improving overall output accuracy to ±1.5%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulator diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | ±5% tolerance, 3.3 V nominal, SOT-323 package, 350 mW rating, 10 μA IR at 1 V | Higher leakage and looser tolerance reduce accuracy in precision references; smaller SOT-323 footprint may ease layout but lowers thermal mass. | Select when cost sensitivity outweighs ±2% tolerance requirement and board space is extremely constrained. |
| BZX384-B3V3,115 | Same ±2% tolerance and 3.3 V rating, but SOD-323 package (2.7 × 1.7 × 1.3 mm), 300 mW Ptot, 350–500 Ω rdif | Slightly lower power rating and different thermal profile (Rth j-a ≈ 350 K/W); identical electrical behavior in regulation function. | Choose when existing SOD-323 land pattern is fixed and thermal margin allows 300 mW operation. |
Compared with BZX284-B3V3,115, MMBZ5226BS-7-F trades precision for cost and size, while BZX384-B3V3,115 offers identical regulation performance in a larger-footprint, higher-thermal-mass package - enabling direct functional substitution where layout permits.
Availability
BZX284-B3V3,115 is available at Aetrix Electronics and suitable for microcontroller reset circuits, ADC reference stabilization, ESD protection clamps, and linear regulator feedback dividers requiring stable component supply and traceable sourcing.
Supply support for BZX284-B3V3,115 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 family of low-power, high-stability Zener diodes targeting precision voltage reference and regulation in space-constrained, thermally demanding embedded systems.
FAQ
What is the Zener voltage tolerance of the BZX284-B3V3,115?
The BZX284-B3V3,115 has a nominal Zener voltage of 3.3 V with a guaranteed tolerance of ±2%, meaning its actual breakdown voltage falls between 3.23 V and 3.37 V when tested at 5 mA reverse current and 25 °C junction temperature. This tight tolerance makes the BZX284-B3V3,115 suitable for applications requiring accurate voltage referencing, such as microcontroller reset thresholds and ADC reference stabilization.
What is the maximum power dissipation rating for the BZX284-B3V3,115?
The BZX284-B3V3,115 is rated for a maximum total power dissipation of 400 mW at an ambient temperature of 25 °C when mounted on a standard 11 × 25 × 1.6 mm PCB. Derating is required above 25 °C at a rate determined by its junction-to-ambient thermal resistance of 315 K/W - for example, maximum allowable power drops to approximately 200 mW at 75 °C ambient. This rating applies under continuous DC conditions, not surge events.
What is the reverse leakage current specification for the BZX284-B3V3,115?
The BZX284-B3V3,115 specifies a maximum reverse current (IR) of 5 μA at a reverse voltage (VR) of 1 V and Tj = 25 °C. This low leakage is critical in high-impedance bias networks and precision reference applications, where excess current could introduce significant error. The value is confirmed in Table 1 of the official NXP datasheet and reflects the device's suitability for low-power analog circuits.
What package type does the BZX284-B3V3,115 use, and what are its key dimensions?
The BZX284-B3V3,115 uses the SOD110 ceramic surface-mount package, measuring 2.10 mm × 1.40 mm × 1.60 mm (length × width × height) with a cathode identification mark on the top surface. Its compact size and ceramic construction provide stable electrical performance across temperature and humidity variations, distinguishing it from epoxy-packaged Zener diodes. The SOD110 outline is standardized per NXP document 97-04-14.
How does the temperature coefficient of the BZX284-B3V3,115 affect its performance?
The BZX284-B3V3,115 has a temperature coefficient (SZ) of −2.4 mV/K at IZ = 5 mA, meaning its Zener voltage decreases by approximately 2.4 mV for every 1 K rise in junction temperature. This negative coefficient must be accounted for in thermal error budgets - for instance, over a −40 to +85 °C ambient range, the voltage shift is roughly ±300 mV - making the BZX284-B3V3,115 appropriate for applications where predictable, compensated drift is acceptable or correctable.
BZX284-B3V3,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-B3V3,115 FAQ
1.How can I place an order for BZX284-B3V3,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-B3V3,115 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-B3V3,115 reliable?
The price and inventory of BZX284-B3V3,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-B3V3,115 is usually 5 days.
3.What payment methods are accepted for BZX284-B3V3,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B3V3,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B3V3,115?
BZX284-B3V3,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-B3V3,115 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-B3V3,115?
For technical support, including BZX284-B3V3,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B3V3,115 requirements.
6.How does Aetrix verify that BZX284-B3V3,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-B3V3,115 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-B3V3,115 meets industry standards.
7.What is the process for return or replacement of BZX284-B3V3,115?
All BZX284-B3V3,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-B3V3,115, 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-B3V3,115 part is unused and in its original packaging.
Return procedure for BZX284-B3V3,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-B3V3,115 Tags
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