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Diodes Incorporated BZX84C6V8-7
- Part No.:
- BZX84C6V8-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84C6V8-7.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,104
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Product details
Overview
BZX84C6V8-7 from Diodes Incorporated is a 350 mW surface-mount Zener diode with nominal zener voltage 6.8 V (6.4–7.2 V range), 5 mA test current, 15 Ω maximum zener impedance at IZT, and ±1.2 mV/°C temperature coefficient. It operates within –65 °C to +150 °C and is used for precision voltage regulation in low-power analog reference circuits.
For engineers reviewing the BZX84C6V8-7 datasheet, BZX84C6V8-7 pinout, BZX84C6V8-7 application, or BZX84C6V8-7 equivalent, key selection factors include zener voltage tolerance, dynamic impedance at 5 mA, thermal resistance (357 °C/W), RoHS/Green compliance, and SOT23 package compatibility with automated assembly.
Technical Context
This Zener diode employs planar die construction for stable breakdown characteristics and low leakage. Its 6.8 V nominal zener voltage is specified at 5 mA test current, with 15 Ω dynamic impedance ensuring tight regulation under small-signal load variations.
The device exhibits a +1.2 mV/°C temperature coefficient near 6.8 V, enabling predictable drift compensation in reference designs. Rated for 350 mW dissipation with RθJA = 357 °C/W under ambient-terminal conditions, it supports reliable operation in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V nominal (6.4–7.2 V min/max), defined at 5 mA test current for stable reference generation |
| Power Dissipation (PD) | 350 mW maximum, valid when terminals held at ambient temperature - sets absolute max continuous bias |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 5 mA - determines output voltage variation under small load changes |
| Reverse Current (IR) | 2.0 µA max at VR = 4.0 V - defines leakage threshold for low-power standby regulation |
| Temperature Coefficient | +1.2 mV/°C - enables predictable voltage drift correction in temperature-sensitive references |
| Package | SOT23 - 3-pin surface-mount outline compatible with standard pick-and-place and reflow processes |
| RoHS Compliance | Fully lead-free, halogen- and antimony-free "Green" device per EU directives and AEC-Q101 qualified |
Pinout & Package
Package: SOT23 - molded plastic case, UL 94V-0 rated, 0.008 g weight, matte tin-plated alloy 42 leadframe, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; voltage referenced to this pin during regulation |
| NC / Heat Sink (Pin 3) | Non-connected / thermal path | No internal connection; serves as mechanical anchor and minor thermal relief via PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and long-term stability under thermal cycling |
| AEC-Q101 qualification | Validates reliability for automotive electronics including infotainment power rails and sensor references |
| 350 mW power rating | Supports regulation in space-constrained consumer and industrial PCBs without forced cooling |
| SOT23 footprint | Enables high-density placement and compatibility with industry-standard automated assembly equipment |
| Green molding compound | Halogen- and antimony-free formulation meets stringent environmental requirements for export markets |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 6.8 V reference for ADC voltage dividers and op-amp bias networks in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to maintain fixed reference potential independent of supply ripple. Use Value: Enables <±1% measurement accuracy over temperature due to low ZZT and predictable TC. |
Use Scenario: Protecting microcontroller GPIO pins from transient surges on 5 V logic lines in industrial control panels. IC Role / Device Role / Timing Role: Clamping element shunting excess energy above 6.8 V to ground before IC damage occurs. Use Value: Limits peak clamped voltage to ≤7.2 V while sustaining <2 µA leakage at 4 V - preserving signal integrity. |
| Low-Power Sensor Bias | Calibration Voltage Source |
|
Use Scenario: Supplying excitation voltage to resistive temperature detectors (RTDs) in portable medical thermometers. IC Role / Device Role / Timing Role: Precision voltage source delivering regulated 6.8 V to bridge circuitry with minimal self-heating. Use Value: Maintains <0.5% line regulation across 1–5 mA load range due to 15 Ω dynamic impedance. |
Use Scenario: Generating traceable calibration voltage for handheld multimeters during factory trim procedures. IC Role / Device Role / Timing Role: Stable DC reference used to adjust DAC offset and gain in metrology-grade instruments. Use Value: Achieves ±0.3% initial tolerance and <50 ppm/°C drift contribution - meeting Class II calibration standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5235B-7-F | Zener voltage 6.8 V (same nominal), but 200 mW PD, 20 Ω ZZT, and ±2.0 mV/°C TC | Lower power handling and higher impedance limit use in higher-current or tighter-drift applications | Select when cost sensitivity outweighs thermal margin or drift performance requirements |
| 1N4734A | Through-hole DO-41 package, 1 W PD, 5 Ω ZZT, but no AEC-Q101 qualification or Green compliance | Not suitable for automated SMT lines or automotive end-equipment requiring qualification | Choose only for prototyping or legacy through-hole designs where board real estate is not constrained |
Compared with MMBZ5235B-7-F, BZX84C6V8-7 offers 75% higher power margin and 25% lower impedance for improved regulation; versus 1N4734A, it delivers SMT scalability and automotive-grade reliability at the cost of lower absolute power rating.
Availability
BZX84C6V8-7 is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, and low-power sensor biasing applications requiring stable component supply and full RoHS/Green compliance.
Supply support for BZX84C6V8-7 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' precision Zener diode product line, engineered specifically for stable voltage regulation in space-constrained, high-reliability applications including automotive, industrial, and portable electronics.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains below 2.0 µA?
The BZX84C6V8-7 specifies 2.0 µA maximum reverse current at VR = 4.0 V. This value is measured under standard test conditions (TA = 25 °C) and reflects the diode's ability to maintain low leakage well below its zener knee, supporting accurate low-voltage sensing and standby-mode operation.
Can BZX84C6V8-7 be used in place of a 6.2 V Zener for higher-voltage reference needs?
No - BZX84C6V8-7 is a fixed 6.8 V zener device with 6.4–7.2 V tolerance range. Substituting it for a 6.2 V part introduces a systematic 0.6 V offset that affects downstream circuit biasing and reference accuracy. Use BZX84C6V2-7-F for 6.2 V applications.
Is the SOT23 package thermally adequate for continuous 350 mW dissipation?
Yes, but only under specified conditions: terminals must be held at ambient temperature (Note 7). On standard FR-4 PCBs without thermal pads, derating applies - e.g., 200 mW at 70 °C ambient. Full 350 mW requires direct thermal anchoring of leads to large copper areas.
Does the "-7" suffix indicate tape-and-reel packaging, and what is the reel quantity?
Yes - the "-7" suffix denotes 3,000-unit tape-and-reel packaging in SOT23 format. This matches Diodes Incorporated's standard ordering code for commercial-grade parts, enabling seamless integration into high-speed SMT assembly lines.
BZX84C6V8-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±6%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84C6V8-7 FAQ
1.How can I place an order for BZX84C6V8-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84C6V8-7 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 BZX84C6V8-7 reliable?
The price and inventory of BZX84C6V8-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84C6V8-7 is usually 5 days.
3.What payment methods are accepted for BZX84C6V8-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84C6V8-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84C6V8-7?
BZX84C6V8-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84C6V8-7 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 BZX84C6V8-7?
For technical support, including BZX84C6V8-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84C6V8-7 requirements.
6.How does Aetrix verify that BZX84C6V8-7 is sourced from the original manufacturer or authorized distributors?
All BZX84C6V8-7 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 BZX84C6V8-7 meets industry standards.
7.What is the process for return or replacement of BZX84C6V8-7?
All BZX84C6V8-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84C6V8-7, 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 BZX84C6V8-7 part is unused and in its original packaging.
Return procedure for BZX84C6V8-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84C6V8-7 Tags
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