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Diodes Incorporated BZX84C8V2W-7
- Part No.:
- BZX84C8V2W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
BZX84C8V2W-7.pdf
- Description:
- DIODE ZENER 8.2V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:3,164
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Product details
Overview
BZX84C8V2W-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 8.2 V, 200 mW power dissipation, and ±5% voltage tolerance (7.7–8.7 V at 5 mA), designed for precision voltage regulation and reference in low-power analog circuits such as sensor biasing and power supply feedback loops.
For engineers reviewing the BZX84C8V2W-7 datasheet, BZX84C8V2W-7 pinout, BZX84C8V2W-7 application, or BZX84C8V2W-7 equivalent, key selection criteria include zener voltage accuracy at IZT = 5 mA, low dynamic impedance (15 Ω at 5 mA), temperature coefficient (+3.2 to +6.2 mV/°C), and SOT-323 package compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. It exhibits a typical zener impedance of 15 Ω at 5 mA test current and 80 Ω at 1 mA knee current, with thermal resistance of 625 K/W on FR4 board.
The device features planar die construction, lead-free/RoHS-compliant matte tin plating, and moisture sensitivity level 1 per J-STD-020D. Its operating temperature range spans −65 °C to +125 °C, supporting industrial and automotive ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal, 7.7–8.7 V min/max at 5 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (PD) | 200 mW - maximum continuous power handling on FR4 board with recommended pad layout |
| Zener Impedance (ZZT) | 15 Ω at 5 mA - low dynamic resistance ensures minimal voltage deviation under load transients |
| Reverse Current (IR) | 0.7 µA at 5.0 V - specifies leakage below breakdown, critical for low-power standby circuits |
| Temperature Coefficient | +3.2 to +6.2 mV/°C at 5 mA - quantifies voltage drift with ambient temperature change |
| Package | SOT-323 - ultra-small 3-pin surface-mount outline (2.2 × 1.35 × 0.9 mm) enabling high-density routing |
Pinout & Package
SOT-323 package with anode-cathode-anode terminal configuration: Pin 1 (Anode), Pin 2 (Cathode), Pin 3 (Anode). Cathode marked by band; polarity confirmed per top-view schematic in DS30066 Rev. 15-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Common anode connection; tied to ground or lower potential node in shunt regulator topology |
| Pin 2 | Cathode | Zener voltage reference node; connected to regulated output or feedback point |
| Pin 3 | Anode | Second anode terminal - internally connected to Pin 1; provides mechanical stability and thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight voltage tolerance control and repeatable zener characteristics across production lots |
| Lead-free / RoHS compliant | Matte tin finish over Alloy 42 leadframe meets global environmental compliance without sacrificing solderability |
| Moisture sensitivity level 1 | No floor life limitation before reflow; eliminates baking requirements for assembly planning |
| Green molding compound | Halogen-free, UL 94V-0 rated plastic housing supports sustainable manufacturing and flame safety |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Voltage Reference |
|---|---|
Use Scenario: Biasing precision op-amp inputs in 4–20 mA transmitter front-ends operating at 8–24 V supply. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 8.2 V reference for current loop scaling and ADC reference buffering. Use Value: Tight 5% voltage tolerance and low 15 Ω impedance ensure <±0.1% reference error under 1 mA load variation. | Use Scenario: Generating fixed reference for microcontroller ADC in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-quiescent-current zener element delivering stable 8.2 V reference from 9 V coin cell or LDO output. Use Value: 0.7 µA reverse leakage at 5 V enables >10-year battery life in always-on sensing applications. |
| Switching Power Supply Feedback | Overvoltage Protection Clamp |
Use Scenario: Secondary-side voltage sensing in isolated flyback converters with optocoupler feedback. IC Role / Device Role / Timing Role: Zener clamping element setting TL431 reference threshold or directly regulating optocoupler LED current. Use Value: 200 mW rating supports robust transient handling during line surges without thermal runaway. | Use Scenario: Input rail protection in USB-powered peripherals exposed to hot-plug transients. IC Role / Device Role / Timing Role: Fast-acting clamp limiting 5 V or 9 V input to safe levels before downstream LDOs or regulators. Use Value: 8.2 V breakdown with 15 Ω impedance limits clamped voltage to ≤8.5 V at 20 mA surge current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5233BS-7-F | Zener voltage 8.2 V, but rated at 350 mW and packaged in SOT-323 with tighter 5% tolerance; higher power margin. | Preferred where sustained 10–15 mA regulation current is required without derating. | Select when thermal headroom or long-term reliability under continuous load is prioritized over cost. |
| BZX84-C8V2 | Same electrical specs but non-RoHS, SnPb-plated, SOT-23 package - larger footprint and legacy compliance. | Acceptable only in non-RoHS legacy repair or military sustainment programs. | Choose only if SOT-23 board space and Pb-based assembly are mandated by existing design constraints. |
Compared with MMBZ5233BS-7-F and BZX84-C8V2, BZX84C8V2W-7 offers optimal balance of RoHS compliance, SOT-323 miniaturization, and 200 mW capability for modern low-power industrial designs - neither over-specified nor legacy-constrained.
Availability
BZX84C8V2W-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power voltage references, and switching power supply feedback circuits requiring stable component supply and full RoHS compliance.
Supply support for BZX84C8V2W-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The BZX84 series belongs to Diodes' general-purpose Zener diode product line, engineered specifically for compact, cost-effective voltage regulation in space-constrained consumer, computing, and industrial applications.
FAQ
What is the maximum continuous reverse current the BZX84C8V2W-7 can handle without degradation?
The device is rated for 200 mW total power dissipation at 25 °C ambient. At its 8.2 V zener voltage, this corresponds to a maximum continuous reverse current of approximately 24.4 mA (200 mW ÷ 8.2 V). Derating applies above 25 °C per the 625 K/W thermal resistance curve.
Does the BZX84C8V2W-7 have a specified capacitance value for high-frequency filtering use?
No specific capacitance value is provided in the DS30066 datasheet for BZX84C8V2W-7. Figure 4 shows typical total capacitance for 8.2 V devices is ~25 pF at 1 V reverse bias and ~15 pF at 2 V, but no guaranteed min/max is specified - it is not characterized or warranted for RF or high-speed signal filtering.
Can BZX84C8V2W-7 be used in place of a 9.1 V Zener like BZX84C9V1W in a voltage reference circuit?
No - substituting BZX84C8V2W-7 for a 9.1 V part changes the regulated voltage by over 10%, which will alter feedback thresholds, reference levels, or protection trip points. Circuit recalibration or redesign is required; voltage mismatch exceeds acceptable tolerance for most precision applications.
Is the SOT-323 package of BZX84C8V2W-7 compatible with standard reflow profiles for lead-free assembly?
Yes - the device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity, with matte tin plating rated for peak temperatures up to 260 °C. Standard IPC/JEDEC J-STD-020-compliant reflow profiles apply without special pre-baking or thermal restrictions.
BZX84C8V2W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
BZX84C8V2W-7 FAQ
1.How can I place an order for BZX84C8V2W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C8V2W-7 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 BZX84C8V2W-7 reliable?
The price and inventory of BZX84C8V2W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C8V2W-7 is usually 5 days.
3.What payment methods are accepted for BZX84C8V2W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C8V2W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C8V2W-7?
BZX84C8V2W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C8V2W-7 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 BZX84C8V2W-7?
For technical support, including BZX84C8V2W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C8V2W-7 requirements.
6.How does Aetrix verify that BZX84C8V2W-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C8V2W-7 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 BZX84C8V2W-7 meets industry standards.
7.What is the process for return or replacement of BZX84C8V2W-7?
All BZX84C8V2W-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C8V2W-7, 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 BZX84C8V2W-7 part is unused and in its original packaging.
Return procedure for BZX84C8V2W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C8V2W-7 Tags
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Diodes Incorporated
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