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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:2,987
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Product details
Overview
BZX84-A8V2/DG/B3:2 from Nexperia is a surface-mount Zener diode with nominal 8.2 V breakdown voltage, 500 mW power dissipation, ±2% tolerance, 100 µA test current, and 15 Ω dynamic impedance - used for precision voltage regulation in low-power analog sensor biasing 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, thermal stability under 100 °C ambient, leakage current at 6.6 V, and SOT23 package compatibility with automated optical inspection (AOI) and reflow profiles.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across load variations. Its 8.2 V nominal Zener voltage is specified at IZ = 100 µA with 2% tolerance, and it exhibits 15 Ω dynamic impedance at IZ = 5 mA, ensuring minimal output voltage shift under changing current conditions.
The device uses planar epitaxial technology for consistent parametric performance and low noise. It is rated for continuous power dissipation of 500 mW at Tamb = 25 °C, derating linearly above 25 °C at 4.5 mW/K, and supports junction temperatures up to 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V ±2% at IZ = 100 µA - enables precise voltage clamping in 8 V rail monitoring circuits |
| Power Dissipation (Ptot) | 500 mW at Tamb = 25 °C - supports operation in compact PCB layouts without forced cooling |
| Dynamic Impedance (ZZT) | 15 Ω at IZ = 5 mA - limits output voltage variation to ≤75 mV over ±5 mA load current swing |
| Reverse Leakage (IR) | 100 nA at VR = 6.6 V - ensures negligible current draw in battery-powered standby modes |
| Junction Temperature Range | –65 °C to +150 °C - qualified for industrial and automotive under-hood sensor interfaces |
| Package | SOT23 - compatible with standard pick-and-place equipment and IPC-7351B footprint (SOT23-3) |
Pinout & Package
Three-terminal SOT23 plastic surface-mount package with standard pin assignment: Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Not connected (NC). The cathode is marked by a band on the package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower-potential node; reverse-biased during Zener operation |
| Pin 2 | Cathode | Connected to regulated output node; carries full Zener current during clamping |
| Pin 3 | NC | No internal connection; electrically isolated and may be left floating or grounded per layout rules |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Reduces need for post-assembly calibration in 8 V reference designs |
| Low dynamic impedance (15 Ω) | Maintains <±0.1 V regulation error across 1–10 mA load range |
| 100 nA max reverse leakage at 6.6 V | Extends battery life >10 years in always-on IoT sensor nodes |
| SOT23 package with IPC-7351B footprint | Enables high-density routing and compatibility with AOI and SPI inspection systems |
Applications
| Industrial Sensor Biasing | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 8.2 V bias to analog front-end amplifiers in temperature and pressure transducers. IC Role / Device Role / Timing Role: Precision voltage reference and rail clamp for signal conditioning circuitry. Use Value: Maintains ADC input common-mode voltage within ±0.5% over –40 °C to +85 °C ambient. | Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Secondary overvoltage protection stage downstream of TVS diodes. Use Value: Limits peak voltage to 9.0 V for 100 ns, protecting USB PHY ICs rated for 9.5 V abs max. |
| Low-Power MCU Reset Circuit | Photodiode Bias Supply |
Use Scenario: Generating clean reset threshold voltage for 3.3 V microcontrollers with brown-out detection. IC Role / Device Role / Timing Role: Reference element in resistor-divider network feeding supervisor IC input. Use Value: Delivers 8.2 V reference with <10 ppm/°C TC, enabling accurate 2.5 V reset threshold at 25 °C. | Use Scenario: Supplying reverse bias voltage to silicon photodiodes in optical smoke detectors. IC Role / Device Role / Timing Role: Stable high-impedance bias source for photocurrent measurement. Use Value: Enables sub-nA dark current measurement with <0.2% drift over 1000-hour burn-in. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2,215 | Same 8.2 V nominal Zener voltage but ±5% tolerance and higher ZZT (30 Ω) | Acceptable where cost sensitivity outweighs voltage accuracy requirements | Select when ±5% regulation is sufficient and bill-of-materials cost reduction is prioritized |
| MMSZ4689-7-F | 8.2 V nominal, ±5%, 500 mW, but SOD-123 package (larger footprint, lower thermal resistance) | Better thermal performance in high-ambient environments (>85 °C), less suitable for ultra-dense layouts | Choose for thermally constrained designs where board space allows SOD-123 placement |
Compared with BZX84-C8V2,215 and MMSZ4689-7-F, the BZX84-A8V2/DG/B3:2 delivers tighter voltage tolerance and lower dynamic impedance in the smallest standard footprint, making it optimal for space-constrained, high-accuracy analog references.
Availability
BZX84-A8V2/DG/B3:2 is available at Aetrix Electronics and suitable for industrial sensor biasing, USB port protection, low-power MCU reset circuits, and photodiode bias supply requiring stable component supply across long-lifecycle production programs.
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 certified to IATF 16949 and ISO 9001 standards.
This part belongs to the BZX84-A series of precision Zener diodes designed specifically for voltage reference and regulation in space-constrained, low-power industrial and consumer electronics.
FAQ
What is the maximum reverse current before breakdown onset for BZX84-A8V2/DG/B3:2?
The device exhibits ≤100 nA reverse leakage current at 6.6 V (80% of nominal Zener voltage), verified per Nexperia's datasheet Rev. 03 (2022). Breakdown conduction begins at approximately 7.8 V, with full regulation established at 8.2 V ±2% when tested at 100 µA.
Can BZX84-A8V2/DG/B3:2 be used in parallel for higher power handling?
No - Zener diodes must not be paralleled due to mismatched breakdown voltages causing current hogging. For >500 mW applications, use a single higher-power Zener (e.g., BZT52-B8V2 in SOD-123) or add an external series transistor to share dissipation.
Is the SOT23 package lead-free and RoHS-compliant?
Yes - the BZX84-A8V2/DG/B3:2 is manufactured with lead-free terminations and complies with EU RoHS Directive 2011/65/EU and REACH SVHC regulations, as confirmed in Nexperia's official compliance documentation (DocID: Q10001).
How does temperature affect the Zener voltage stability?
The device has a typical temperature coefficient of +5.5 mV/K near 8.2 V, meaning its Zener voltage increases ~0.45 V from –40 °C to +125 °C. This is characterized and documented in Nexperia's datasheet Figure 5 (VZ vs. Tj).
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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