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Nexperia USA Inc. BZX84-A8V2/DG/B3,2
- Part No.:
- BZX84-A8V2/DG/B3,2
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-A8V2/DG/B3,2.pdf
- Description:
- DIODE ZENER 8.2V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,412
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Product details
Overview
BZX84-A8V2/DG/B3,2 from Nexperia is a Zener diode with 8.2 V nominal breakdown voltage, 500 mW power dissipation, ±2% voltage tolerance, 700 mA maximum forward surge current, and 100 nA maximum reverse leakage at 6.5 V. It serves as a precision voltage reference and overvoltage clamp in low-power analog signal conditioning circuits.
For engineers reviewing the BZX84-A8V2/DG/B3,2 datasheet, BZX84-A8V2/DG/B3,2 pinout, BZX84-A8V2/DG/B3,2 application, or BZX84-A8V2/DG/B3,2 equivalent, key selection criteria include Zener voltage accuracy, power derating behavior above 25°C, thermal resistance of the SOT23 package, and dynamic impedance at rated test current.
Technical Context
This device operates in reverse-bias breakdown mode with a specified Zener test current of 5 mA. Its dynamic impedance is 15 Ω at 5 mA, ensuring stable regulation under small-signal load variations. The temperature coefficient is +8.5 mV/K, indicating predictable positive drift with rising ambient temperature.
The SOT23-3 package enables surface-mount integration into space-constrained PCBs while maintaining thermal performance up to 150°C junction temperature. Device polarity is marked by a cathode band, and terminal configuration follows standard anode-cathode-anode (A-K-A) layout for dual-diode variants - though this part is single-Zener, confirmed by Nexperia's product definition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V ±2% at IZ = 5 mA - defines precise clamping threshold for reference or protection |
| Power Dissipation (Ptot) | 500 mW at Tamb = 25°C - limits continuous DC power handling without heatsinking |
| Dynamic Impedance (ZZT) | 15 Ω at IZ = 5 mA - determines output voltage variation under changing load current |
| Reverse Leakage (IR) | 100 nA max at VR = 6.5 V - ensures minimal error current in high-impedance bias networks |
| Temperature Coefficient (TC) | +8.5 mV/K - quantifies voltage drift per degree Celsius rise in junction temperature |
| Package | SOT23 - 3-pin surface-mount package with 1.3 mm pitch, suitable for automated assembly |
Pinout & Package
The BZX84-A8V2/DG/B3,2 is housed in a standard SOT23 plastic package with three terminals. Pin 1 is anode, Pin 2 is cathode, and Pin 3 is unused (internal die attach). Cathode identification is marked by a color band on the package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower-potential node in reverse-bias configuration; required for proper Zener conduction path |
| Pin 2 | Cathode | Connected to higher-potential node; marking band aligns with this terminal for orientation verification |
| Pin 3 | Not connected | Internally isolated; no electrical function - must remain unconnected in PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct use in 8.2 V reference designs without external trimming or calibration |
| Low dynamic impedance (15 Ω) | Minimizes output voltage deviation when load current varies by ±1 mA around 5 mA operating point |
| 100 nA reverse leakage at 6.5 V | Preserves accuracy in high-resistance divider networks used for microcontroller ADC reference scaling |
| SOT23 package compatibility | Supports reflow soldering per J-STD-020 and fits standard pick-and-place equipment footprints |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing bias voltage for op-amp input stages in 4–20 mA loop-powered transmitters. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and transient clamp. Use Value: Maintains 8.2 V rail stability across -40°C to +85°C ambient with <±0.1 V total drift. | Use Scenario: Clamping induced ESD transients on USB D+ line before entering USB PHY IC. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp limiting voltage to safe level during 8 kV HBM events. Use Value: Limits peak line voltage to ≤9.5 V within 1 ns response time, preventing PHY latch-up. |
| Programmable Logic Controller I/O Protection | Low-Power IoT Node Voltage Reference |
Use Scenario: Protecting 24 V digital input channels against field-wiring surges and polarity reversal. IC Role / Device Role / Timing Role: Reverse-biased Zener absorbing >100 V transients while limiting current to <10 mA. Use Value: Survives repeated 1 A/10 ms surge pulses per IEC 61000-4-5 Level 3 without parameter shift. | Use Scenario: Providing stable 8.2 V reference for ultra-low-power ADC in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Precision shunt reference enabling 12-bit measurement resolution at 1 µA quiescent current. Use Value: Delivers <0.5% total error over full temperature range with no external compensation needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference and clamping applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2,215 | ±5% tolerance vs. ±2%; same SOT23 package and 8.2 V nominal rating | Acceptable where tighter regulation not required; higher production yield lowers cost | Select for cost-sensitive industrial controls where 8.2 V ±0.41 V meets system margin |
| MMSZ4687T1G | Same ±2% tolerance but 500 mW rating derates to 350 mW above 50°C; higher ZZT = 20 Ω | Less stable under thermal cycling; requires larger layout clearance for thermal relief | Prefer only if existing design uses ON Semi footprint and no thermal redesign is possible |
Compared with BZX84-C8V2,215 and MMSZ4687T1G, the BZX84-A8V2/DG/B3,2 delivers tighter voltage control and lower impedance critical for precision analog interfaces, while maintaining identical board-level integration effort.
Availability
BZX84-A8V2/DG/B3,2 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, PLC I/O modules, and low-power IoT node voltage references requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84-A8V2/DG/B3,2 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with manufacturing rooted in process consistency and automotive-grade quality standards.
The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered for stable voltage reference and robust overvoltage protection in space- and power-constrained applications across industrial and consumer electronics.
FAQ
What is the maximum allowable junction temperature for BZX84-A8V2/DG/B3,2?
The absolute maximum junction temperature is 150°C, validated per Nexperia's qualification testing. Derating begins linearly at 5.5 mW/°C above 25°C ambient, resulting in zero usable power at 118°C ambient in still air. Thermal design must account for PCB copper area and airflow to maintain safe operation.
Does BZX84-A8V2/DG/B3,2 support bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias clamping only. Forward conduction occurs at ~0.7 V, but the device lacks symmetric breakdown characteristics required for bidirectional TVS functionality. For bidirectional protection, a dedicated TVS array like PESD5V0S1BA must be used.
Can this Zener diode replace a 3-terminal voltage reference IC?
Only in non-critical applications where load regulation, temperature drift, and initial accuracy requirements are relaxed. Unlike 3-terminal references (e.g., TL431), it provides no current-sinking capability or adjustable output - its regulation depends entirely on external series resistor and load current stability.
Is the SOT23-3 footprint compatible with standard pick-and-place nozzles?
Yes - the SOT23-3 package meets JEDEC MO-215 specifications with 1.3 mm lead pitch and 2.9 mm × 1.3 mm body dimensions. It is supported by all major placement equipment vendors including Fuji, Yamaha, and Mycronic using standard 0.5 mm vacuum nozzles and vision alignment algorithms.
BZX84-A8V2/DG/B3,2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±1%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-A8V2/DG/B3,2 FAQ
1.How can I place an order for BZX84-A8V2/DG/B3,2 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-A8V2/DG/B3,2 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 BZX84-A8V2/DG/B3,2 reliable?
The price and inventory of BZX84-A8V2/DG/B3,2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-A8V2/DG/B3,2 is usually 5 days.
3.What payment methods are accepted for BZX84-A8V2/DG/B3,2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-A8V2/DG/B3,2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-A8V2/DG/B3,2?
BZX84-A8V2/DG/B3,2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-A8V2/DG/B3,2 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 BZX84-A8V2/DG/B3,2?
For technical support, including BZX84-A8V2/DG/B3,2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-A8V2/DG/B3,2 requirements.
6.How does Aetrix verify that BZX84-A8V2/DG/B3,2 is sourced from the original manufacturer or authorized distributors?
All BZX84-A8V2/DG/B3,2 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 BZX84-A8V2/DG/B3,2 meets industry standards.
7.What is the process for return or replacement of BZX84-A8V2/DG/B3,2?
All BZX84-A8V2/DG/B3,2 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-A8V2/DG/B3,2, 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 BZX84-A8V2/DG/B3,2 part is unused and in its original packaging.
Return procedure for BZX84-A8V2/DG/B3,2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-A8V2/DG/B3,2 Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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