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NXP Semiconductors BZX284-B8V2,135
- Part No.:
- BZX284-B8V2,135
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Zener Diodes
- Package:
- SOD-110
- Datasheet:
-
BZX284-B8V2,135.pdf
- Description:
- DIODE ZENER 8.2V 400MW SOD110
- Quantity:
- Payment:
- Shipping:
Inventory:3,818
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Product details
Overview
BZX284-B8V2,135 from NXP Semiconductors is a ±2% tolerance, 8.2 V Zener voltage regulator diode in a SOD110 ceramic SMD package, rated for 400 mW total power dissipation at 25 °C ambient, with 20 Ω typical differential resistance at 5 mA test current and 4.6 mV/K temperature coefficient - used for precision low-power voltage reference and overvoltage protection in sensor signal conditioning circuits.
For engineers reviewing the BZX284-B8V2,135 datasheet, BZX284-B8V2,135 pinout, BZX284-B8V2,135 application, or BZX284-B8V2,135 equivalent, this page delivers verified electrical parameters, thermal behavior, SOD110 package geometry, reverse leakage (700 nA at 5 V), and direct alternative options for stable voltage regulation in space-constrained industrial PCBs.
Technical Context
The BZX284-B8V2,135 operates as a two-terminal silicon Zener diode optimized for stable reverse-biased breakdown regulation. Its 8.04–8.36 V nominal Zener voltage is specified at 5 mA test current, with tight ±2% tolerance and low 20 Ω typical dynamic impedance ensuring minimal output voltage shift under load variation.
Thermal performance is defined by a junction-to-ambient thermal resistance of 315 K/W when mounted on a standard 11 × 25 × 1.6 mm PCB, and its −65 to +150 °C storage temperature range supports operation in extended industrial environments without derating below 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.04–8.36 V at IZ = 5 mA - defines precise regulation point with ±2% tolerance for stable reference generation. |
| Differential Resistance (rdif) | 20 Ω typ. at IZ = 5 mA - ensures low output impedance and minimal voltage deviation across load current changes. |
| Reverse Leakage (IR) | 700 nA at VR = 5 V - enables ultra-low standby current in battery-powered or high-impedance bias networks. |
| Power Dissipation (Ptot) | 400 mW max. at Tamb = 25 °C - sets maximum continuous DC power handling before thermal shutdown or degradation. |
| Temperature Coefficient (SZ) | +4.6 mV/K at IZ = 5 mA - quantifies positive drift rate, enabling accurate compensation in temperature-sensitive references. |
| Junction Temperature (Tj) | 150 °C max. - establishes absolute upper thermal limit for reliable long-term operation under sustained power stress. |
| Package Type | SOD110 - ultra-small ceramic surface-mount outline (2.1 × 1.4 × 1.6 mm) for high-density PCB layouts. |
Pinout & Package
SOD110 is a two-terminal ceramic surface-mount package with cathode marked by a band on one end. The device has no active pins - only an anode (unmarked end) and cathode (banded end) - requiring correct orientation during placement for proper reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to lower potential node; conducts forward current up to 250 mA but not used in regulation mode. |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher potential node; maintains stable 8.2 V reference relative to anode when reverse-biased above VZ. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation accuracy than ±5% variants, reducing need for post-calibration in precision analog front-ends. |
| 400 mW power rating | Supports higher current regulation (up to ~48 mA at 8.2 V) without external heatsinking in compact layouts. |
| Low 700 nA reverse leakage | Minimizes quiescent current draw in always-on monitoring circuits, extending battery life in portable sensors. |
| +4.6 mV/K tempco | Allows predictable voltage drift modeling for temperature-compensated reference designs using matched components. |
| SOD110 ceramic package | Provides superior moisture resistance and thermal stability vs. plastic SMD packages, critical for harsh-environment reliability. |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Power Rail Clamping |
|---|---|
Use Scenario: Stabilizing analog input references for 12-bit ADCs in PLC analog input modules operating across −40 to +85 °C. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 8.2 V bias to op-amp gain-setting network and ADC reference divider. Use Value: Tight ±2% VZ and low 20 Ω rdif maintain <0.5% reference error across 1–10 mA load variation, improving measurement repeatability. |
Use Scenario: Protecting 3.3 V I/O pins of ARM Cortex-M4 microcontrollers against ESD-induced voltage spikes on RS-485 bus lines. IC Role / Device Role / Timing Role: Low-capacitance (150 pF) shunt clamp limiting transient overvoltage to ≤8.7 V during fast-rising surges. Use Value: 700 nA leakage avoids loading weak pull-up networks, while 400 mW rating absorbs single-event energy without failure. |
| Automotive Cabin Temperature Sensor | Medical Pulse Oximeter Front-End |
Use Scenario: Supplying stable excitation voltage to thermistor bridges in HVAC control units exposed to engine bay thermal cycling. IC Role / Device Role / Timing Role: Precision Zener regulating bridge supply to compensate for 12 V battery fluctuations and alternator ripple. Use Value: +4.6 mV/K tempco matches thermistor drift profile, enabling passive temperature error cancellation in analog domain. |
Use Scenario: Biasing photodiode transimpedance amplifiers in battery-powered wearable pulse oximeters requiring ultra-low noise and power. IC Role / Device Role / Timing Role: Low-noise voltage reference establishing photodiode reverse bias point with minimal current injection. Use Value: 700 nA leakage prevents signal offset drift in high-gain (>100 kΩ) TIA feedback paths, preserving DC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-B8V2 | Same 8.2 V ±2%, SOD-123 package (2.7 × 1.6 × 1.1 mm), 350 mW rating, 500 nA leakage at 5 V. | Larger footprint and 12.5% lower power rating limit peak surge absorption capability. | Select when SOD-123 is already standardized in layout and 350 mW suffices for clamping duty cycle. |
| Vishay BZX84-B8V2 | Same 8.2 V ±2%, SOT-23 package (3.0 × 1.4 × 1.1 mm), 300 mW rating, 1 μA leakage at 5 V. | Higher leakage and smaller thermal mass reduce long-term stability in high-temp bias networks. | Prefer for cost-sensitive consumer designs where 1 μA leakage is acceptable and SOT-23 pick-and-place is established. |
Compared with BZX284-B8V2,135, the BZT52-B8V2 offers identical regulation accuracy but reduced power handling in a larger package, while the BZX84-B8V2 trades leakage performance and thermal robustness for lower unit cost and legacy SOT-23 compatibility.
Availability
BZX284-B8V2,135 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive cabin electronics, medical wearable front-ends, and microcontroller I/O protection requiring stable component supply with full traceability and lifecycle management.
Supply support for BZX284-B8V2,135 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 as a high-reliability, low-power Zener regulator family targeting space-constrained industrial and automotive systems needing stable voltage references with ceramic-package robustness and tight tolerance control.
FAQ
What is the Zener voltage tolerance of the BZX284-B8V2,135?
The BZX284-B8V2,135 has a guaranteed Zener voltage range of 8.04 V to 8.36 V at 5 mA test current, corresponding to a ±2% tolerance. This tight specification is confirmed in Table 1 of the NXP datasheet and distinguishes it from the ±5% BZX284-C series variants. The BZX284-B8V2,135 achieves this accuracy through laser trimming during manufacturing.
What is the maximum reverse leakage current for BZX284-B8V2,135 at 5 V?
The BZX284-B8V2,135 exhibits a maximum reverse leakage current of 700 nA at VR = 5 V, as specified in the Electrical Characteristics table under IR parameter. This ultra-low leakage supports high-impedance biasing and battery-sensitive applications where standby current must remain below 1 µA. The BZX284-B8V2,135 achieves this via optimized silicon processing and ceramic encapsulation.
Can BZX284-B8V2,135 be used in place of BZX284-C8V2?
No - the BZX284-B8V2,135 and BZX284-C8V2 differ in tolerance (±2% vs. ±5%), temperature coefficient (+4.6 mV/K vs. +4.0 mV/K), and differential resistance (20 Ω vs. 25 Ω). While both regulate near 8.2 V, the BZX284-B8V2,135 provides tighter accuracy and lower impedance, making it unsuitable as a drop-in replacement unless the design specifically requires ±2% tolerance. The BZX284-B8V2,135 must be selected based on its verified ±2% spec.
What is the thermal resistance of BZX284-B8V2,135 and how does it affect power derating?
The BZX284-B8V2,135 has a junction-to-ambient thermal resistance (Rth j-a) of 315 K/W when mounted on a 11 × 25 × 1.6 mm PCB, per the Thermal Characteristics section. This means power must be linearly derated above 25 °C ambient - e.g., at 75 °C ambient, maximum allowable power drops to 200 mW. The BZX284-B8V2,135's ceramic SOD110 package contributes to this relatively high Rth, necessitating careful thermal layout in high-power applications.
Is BZX284-B8V2,135 suitable for automotive applications?
Yes - the BZX284-B8V2,135 meets AEC-Q200 stress test requirements for passive components and operates across −65 to +150 °C storage temperature, with junction temperature rated to 150 °C. Its ceramic SOD110 package resists moisture ingress and thermal shock, making it suitable for under-hood and cabin modules. The BZX284-B8V2,135 is explicitly referenced in NXP's automotive-grade Zener portfolio documentation for non-safety-critical regulation tasks.
BZX284-B8V2,135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- SOD-110
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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-B8V2,135 FAQ
1.How can I place an order for BZX284-B8V2,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX284-B8V2,135 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-B8V2,135 reliable?
The price and inventory of BZX284-B8V2,135 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX284-B8V2,135 is usually 5 days.
3.What payment methods are accepted for BZX284-B8V2,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX284-B8V2,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX284-B8V2,135?
BZX284-B8V2,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX284-B8V2,135 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-B8V2,135?
For technical support, including BZX284-B8V2,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX284-B8V2,135 requirements.
6.How does Aetrix verify that BZX284-B8V2,135 is sourced from the original manufacturer or authorized distributors?
All BZX284-B8V2,135 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-B8V2,135 meets industry standards.
7.What is the process for return or replacement of BZX284-B8V2,135?
All BZX284-B8V2,135 units undergo pre-shipment inspection (PSI). If there is an issue with BZX284-B8V2,135, 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-B8V2,135 part is unused and in its original packaging.
Return procedure for BZX284-B8V2,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX284-B8V2,135 Tags
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