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NXP Semiconductors BZX284-B27,115
- Part No.:
- BZX284-B27,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B27,115.pdf
- Description:
- DIODE ZENER 27V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:3,458
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Product details
Overview
BZX284-B27,115 from NXP Semiconductors is a ±2% tolerance Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 27 V nominal working voltage at 2 mA test current, 400 mW total power dissipation, and 35 Ω typical differential resistance - used for precision low-power voltage reference and overvoltage protection in sensor signal conditioning circuits.
For engineers reviewing the BZX284-B27,115 datasheet, BZX284-B27,115 pinout, BZX284-B27,115 application, or BZX284-B27,115 equivalent, this page delivers verified electrical parameters, thermal behavior, package dimensions, reverse leakage limits, temperature coefficient data, and real-world selection guidance for stable voltage regulation in space-constrained PCB designs.
Technical Context
The BZX284-B27,115 operates as a two-terminal silicon Zener diode with sharp reverse breakdown at 27 V, optimized for low-current regulation (IZtest = 2 mA) and minimal dynamic impedance (35 Ω typ.). Its SOD110 package enables high thermal resistance (315 K/W junction-to-ambient) on standard FR-4 PCBs.
It exhibits a positive temperature coefficient of +8 mV/K at 2 mA, enabling predictable drift compensation in bias networks. Reverse leakage remains ≤50 nA at VR = 0.7 × VZnom (18.9 V), supporting low-power standby operation in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 27 V at IZ = 2 mA - defines stable regulation point for reference design |
| Tolerance | ±2% - ensures tight voltage accuracy without post-production trimming |
| Differential Resistance | 35 Ω typical at IZ = 2 mA - determines load regulation error under current variation |
| Power Dissipation | 400 mW max at Tamb = 25 °C - sets maximum continuous power handling on standard PCB |
| Reverse Leakage | ≤50 nA at VR = 18.9 V - enables ultra-low quiescent current in always-on circuits |
| Temperature Coefficient | +8 mV/K at IZ = 2 mA - allows predictable voltage drift modeling across −65 to +150 °C range |
| Junction Temperature | 150 °C max - defines upper thermal limit for reliable long-term operation |
Pinout & Package
SOD110 is a very small ceramic surface-mount package (2.10 × 1.40 × 1.60 mm) with cathode marked by a band on one end. The device has two terminals: anode and cathode - no internal connections beyond the Zener junction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node; conducts when forward-biased ≥0.9 V |
| Cathode | Zener breakdown terminal | Marked side; connected to higher-potential node during regulation; clamps reverse voltage to 27 V |
Key Features
| Feature | Design Value |
|---|---|
| ±2% voltage tolerance | Enables direct use in precision references without calibration or trimming |
| 400 mW power rating | Supports robust transient suppression in 3.3 V/5 V logic supply rails |
| SOD110 ceramic package | Provides stable electrical performance across humidity and thermal cycling |
| +8 mV/K tempco | Permits accurate drift compensation in temperature-sensitive analog front-ends |
| ≤50 nA leakage at 18.9 V | Minimizes standby current in energy-harvesting and IoT sensor nodes |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reset Circuit |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in pressure transducers operating from 3.3 V rails. IC Role / Device Role / Timing Role: Zener diode providing fixed 27 V reference for op-amp gain-setting network. Use Value: Tight ±2% tolerance ensures <0.5% full-scale error contribution to ADC measurement chain. | Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ MCU in battery-powered environmental monitor. IC Role / Device Role / Timing Role: Voltage supervisor element triggering POR circuit when VDD drops below 27 V × 0.7 = 18.9 V. Use Value: 50 nA leakage preserves >10-year shelf life in coin-cell–powered devices. |
| Automotive Cabin Control Panel | Programmable Logic Supply Clamp |
Use Scenario: Regulating auxiliary 27 V rail for touch controller IC in HVAC interface module exposed to 12 V vehicle transients. IC Role / Device Role / Timing Role: Overvoltage clamp protecting downstream LDO input against load-dump spikes. Use Value: 400 mW rating absorbs 100 μs surge events per ISO 7637-2 without degradation. | Use Scenario: Setting programmable trip point for FPGA configuration voltage monitoring using resistor divider feedback. IC Role / Device Role / Timing Role: Precision Zener defining upper threshold in comparator-based fault detection circuit. Use Value: 35 Ω differential resistance minimizes hysteresis-induced false triggers during slow-ramping supply faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5256B | 27 V ±5%, SOT-23 package, 350 mW rating, 70 Ω rdif | Higher tolerance and impedance; less precise for reference use | Preferred where cost sensitivity outweighs regulation accuracy |
| BZX84-C27 | 27 V ±5%, SOT-23, 300 mW, 80 Ω rdif, higher IR (100 nA) | Lower power handling and higher leakage limit system standby current | Suitable for non-critical clamping where board space permits SOT-23 |
Compared with BZX284-B27,115, MMBZ5256B offers lower cost but sacrifices 3% absolute voltage accuracy and 40% higher dynamic impedance; BZX84-C27 trades tighter footprint compatibility for reduced thermal margin and doubled leakage - making BZX284-B27,115 optimal for precision, low-leakage, ceramic-reliability requirements.
Availability
BZX284-B27,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive cabin electronics, and low-power microcontroller reset circuits requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZX284-B27,115 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 designed for high-stability, low-power voltage regulation in space-constrained SMD applications - emphasizing ceramic reliability, tight tolerance, and predictable thermal behavior across extended temperature ranges.
FAQ
What is the nominal Zener voltage and test condition for BZX284-B27,115?
The BZX284-B27,115 has a nominal Zener voltage of 27 V measured at a test current (IZtest) of 2 mA. This value falls within the ±2% tolerance band (26.5 V to 27.5 V), and the device's differential resistance is specified at this same condition to ensure consistent regulation performance in precision analog circuits.
What package type does BZX284-B27,115 use and what are its key mechanical dimensions?
BZX284-B27,115 uses the SOD110 ceramic surface-mount package, measuring 2.10 mm × 1.40 mm × 1.60 mm. Its compact size supports high-density PCB layouts, and the ceramic body provides superior moisture resistance and thermal stability compared to plastic-packaged Zeners - critical for automotive and industrial deployments.
How does the temperature coefficient of BZX284-B27,115 affect its regulation accuracy over temperature?
The BZX284-B27,115 has a temperature coefficient of +8 mV/K at IZ = 2 mA, meaning its Zener voltage increases by approximately 8 mV per degree Celsius rise. This predictable positive drift allows designers to compensate for thermal effects in reference networks - for example, offsetting −2 mV/K op-amp input bias drift in sensor signal chains.
What is the maximum reverse leakage current for BZX284-B27,115 and at what voltage is it specified?
The maximum reverse leakage current for BZX284-B27,115 is 50 nA, specified at VR = 0.7 × VZnom = 18.9 V. This ultra-low leakage supports energy-efficient operation in always-on subsystems such as real-time clocks, wake-up comparators, and battery-monitoring circuits where standby current must remain below 100 nA.
Can BZX284-B27,115 be used in place of BZX284-C27 for improved voltage accuracy?
Yes - BZX284-B27,115 replaces BZX284-C27 when ±2% voltage accuracy is required instead of ±5%. Both share identical SOD110 packaging and thermal characteristics, but the B-series part delivers tighter regulation tolerance and lower differential resistance (35 Ω vs. 250 Ω typical), making BZX284-B27,115 preferable for precision reference and low-drift biasing applications.
BZX284-B27,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 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-B27,115 FAQ
1.How can I place an order for BZX284-B27,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-B27,115 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-B27,115 reliable?
The price and inventory of BZX284-B27,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-B27,115 is usually 5 days.
3.What payment methods are accepted for BZX284-B27,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B27,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B27,115?
BZX284-B27,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-B27,115 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-B27,115?
For technical support, including BZX284-B27,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B27,115 requirements.
6.How does Aetrix verify that BZX284-B27,115 is sourced from the original manufacturer or authorized distributors?
All BZX284-B27,115 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-B27,115 meets industry standards.
7.What is the process for return or replacement of BZX284-B27,115?
All BZX284-B27,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-B27,115, 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-B27,115 part is unused and in its original packaging.
Return procedure for BZX284-B27,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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