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Diodes Incorporated BZX84C8V2W-7-F
- Part No.:
- BZX84C8V2W-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84C8V2W-7-F.pdf
- Description:
- DIODE ZENER 8.2V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
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Product details
Overview
BZX84C8V2W-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 8.2 V zener voltage, 200 mW power dissipation, and SOT-323 package. It regulates voltage in low-power biasing, reference, and overvoltage protection circuits, operating across –65 °C to +125 °C with ±0.5 V zener tolerance at 5 mA test current.
For engineers reviewing the BZX84C8V2W-7-F datasheet, BZX84C8V2W-7-F pinout, BZX84C8V2W-7-F application, or BZX84C8V2W-7-F equivalent, key selection criteria include zener voltage accuracy (7.7–8.7 V), low reverse leakage (≤0.7 µA at 5.0 V), temperature coefficient (+3.2 to +6.2 mV/°C), and thermal resistance (625 K/W).
Technical Context
This Zener diode uses planar die construction for stable breakdown characteristics and operates under reverse-biased conditions to maintain a fixed voltage across its terminals. Its 8.2 V nominal zener voltage is specified at 5 mA test current (IZT), with dynamic impedance of 15 Ω at IZT and 80 Ω at knee current (IZK = 1.0 mA).
The device exhibits a positive temperature coefficient (+3.2 to +6.2 mV/°C), indicating increasing zener voltage with rising junction temperature. It is rated for 200 mW power dissipation on FR4 PCB with recommended pad layout, derating linearly above 25 °C ambient per the published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal, 7.7–8.7 V range at IZT = 5 mA - defines regulation setpoint tolerance |
| Power Dissipation (PD) | 200 mW at TA = 25 °C - limits continuous reverse-bias power handling on standard FR4 |
| Zener Impedance (ZZT) | 15 Ω at IZT = 5 mA - indicates regulation stiffness under nominal load |
| Reverse Leakage (IR) | ≤0.7 µA at VR = 5.0 V - ensures minimal quiescent current in standby bias networks |
| Temp Coefficient (αVZ) | +3.2 to +6.2 mV/°C at IZT = 5 mA - quantifies voltage drift with temperature in precision references |
| Junction-to-Ambient RθJA | 625 K/W - determines thermal rise per mW; requires adequate copper area for full rating |
| Operating Temperature | –65 °C to +125 °C - supports industrial and automotive under-hood environments |
Pinout & Package
Package: SOT-323 - ultra-small surface-mount plastic case (2.0–2.2 mm length × 1.15–1.35 mm width × 0.25–0.40 mm height), RoHS-compliant, matte tin-plated leads, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to lower-potential node; reverse-biased operation places cathode at higher potential |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 8.2 V relative to anode when reverse current ≥1 mA flows |
| Case / Heat Sink (Pin 3) | Non-electrical mechanical termination | SOT-323 has no internal thermal pad; thermal path relies on leadframe conduction to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Enables tight zener voltage distribution and repeatable breakdown characteristics across production lots |
| Ultra-small SOT-323 footprint | 0.006 g mass and 2.2 × 1.35 mm outline enable high-density PCB layouts in space-constrained modules |
| Lead-free and RoHS compliant | Matte tin finish over Alloy 42 leadframe meets global environmental compliance without solderability compromise |
| Green molding compound | Halogen-free, UL 94V-0 rated encapsulant eliminates brominated flame retardants for safer end-of-life processing |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 8.2 V reference for ADC voltage dividers or op-amp bias networks in battery-powered sensors. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference with 5 mA nominal bias current. Use Value: Delivers ±0.5 V regulation window and <15 Ω dynamic impedance to minimize reference error under varying load currents. |
Use Scenario: Protecting microcontroller GPIO pins from transient surges exceeding 5.5 V in industrial I/O modules. IC Role / Device Role / Timing Role: Reverse-biased clamping element limiting voltage to ≤8.7 V during ESD or inductive kick events. Use Value: Activates at 7.7 V minimum, clamps within 100 ns, and sustains 200 mW peak pulse power without degradation. |
| Low-Power Bias Network | Temperature-Compensated Reference |
Use Scenario: Generating precise bias points for RF amplifier stages in IoT transceivers where supply headroom is limited. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed DC operating point for transistor base or gate drive. Use Value: Draws only 0.7 µA leakage at 5 V reverse bias, minimizing quiescent current in always-on subsystems. |
Use Scenario: Building a compensated reference by pairing with a negative-tempco diode in analog front-end calibration circuits. IC Role / Device Role / Timing Role: Positive temperature coefficient (+3.2 to +6.2 mV/°C) enables cancellation of other component drift. Use Value: Enables <±50 ppm/°C net reference drift when combined with matched NTC elements in sensor signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5231BS-7-F | Same SOT-323 package; 5.1 V nominal zener, 100 mW rating, 17 Ω ZZT, –2.7 to +1.2 mV/°C tempco | Limited to lower-voltage reference designs; unsuitable for 8 V+ regulation or clamping | Select when 5.1 V reference with tighter tempco is required and power budget is ≤100 mW |
| BZX84C8V2LT1G | Same 8.2 V rating and SOT-23 package; 350 mW rating, 15 Ω ZZT, +3.2 to +6.2 mV/°C tempco, but larger footprint | Higher power handling enables use in 10–20 mA bias networks; incompatible with SOT-323 land patterns | Choose for higher reliability in thermally demanding environments where board space permits SOT-23 |
Compared with MMBZ5231BS-7-F and BZX84C8V2LT1G, BZX84C8V2W-7-F uniquely balances 8.2 V regulation, 200 mW capability, and ultra-compact SOT-323 packaging-making it optimal for space-constrained 8 V reference and clamp roles where thermal margin exceeds 100 mW but SOT-23 is prohibitive.
Availability
BZX84C8V2W-7-F is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and low-power bias network applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for BZX84C8V2W-7-F 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, manufacturing, and sales operations across Asia, Europe, and North America.
This device belongs to the BZX84C series of surface-mount Zener diodes, engineered for precision voltage regulation and transient suppression in compact, cost-sensitive consumer, industrial, and computing applications.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX84C8V2W-7-F is designed to operate as a Zener regulator in reverse breakdown, with a nominal zener voltage of 8.2 V. Its guaranteed breakdown range is 7.7 V to 8.7 V at 5 mA test current. It is not rated for blocking in forward bias beyond 0.9 V, nor for sustained reverse voltage below its zener threshold without regulation.
Can this part be used in place of a 1N4733A?
No - the 1N4733A is a through-hole 5.1 V, 1 W Zener in DO-41 package, while BZX84C8V2W-7-F is an 8.2 V, 200 mW SOT-323 device. Voltage mismatch, power rating disparity, and incompatible packaging prevent direct substitution without circuit redesign and thermal reassessment.
Is the SOT-323 package compatible with reflow soldering per J-STD-020?
Yes - the device's terminals are solderable per MIL-STD-202, Method 208, and its moisture sensitivity level is rated Level 1 per J-STD-020D, meaning it may be stored indefinitely at ≤30 °C/60% RH and processed using standard Pb-free reflow profiles without baking.
Does this Zener diode have a specified capacitance value?
No specific capacitance is listed in the datasheet for BZX84C8V2W-7-F. However, Figure 4 shows typical total capacitance for the BZX84C series: ~15 pF at 8.2 V nominal zener voltage and 1 V reverse bias, measured at 1 MHz. This value increases slightly at lower bias voltages.
BZX84C8V2W-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±6.1%
- Power - Max:
- 200 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 ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84C8V2W-7-F FAQ
1.How can I place an order for BZX84C8V2W-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C8V2W-7-F 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-F reliable?
The price and inventory of BZX84C8V2W-7-F 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-F is usually 5 days.
3.What payment methods are accepted for BZX84C8V2W-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C8V2W-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C8V2W-7-F?
BZX84C8V2W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C8V2W-7-F 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-F?
For technical support, including BZX84C8V2W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C8V2W-7-F requirements.
6.How does Aetrix verify that BZX84C8V2W-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84C8V2W-7-F 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-F meets industry standards.
7.What is the process for return or replacement of BZX84C8V2W-7-F?
All BZX84C8V2W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C8V2W-7-F, 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-F part is unused and in its original packaging.
Return procedure for BZX84C8V2W-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C8V2W-7-F Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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