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Diodes Incorporated BZT52C6V8Q-7-F
- Part No.:
- BZT52C6V8Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C6V8Q-7-F.pdf
- Description:
- DIODE ZENER 6.8V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:6,014
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Product details
Overview
BZT52C6V8Q-7-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount Zener diode with nominal 6.8 V zener voltage, 5 mA test current, 15 Ω maximum zener impedance at 1 kHz, 2.0 mA maximum reverse leakage at 4.5 V, and ±5% voltage tolerance - used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the BZT52C6V8Q-7-F datasheet, BZT52C6V8Q-7-F pinout, BZT52C6V8Q-7-F application, or BZT52C6V8Q-7-F equivalent, key selection criteria include zener voltage stability across temperature (±0.4 mV/°C coefficient), low dynamic impedance for regulation accuracy, SOD123 package compatibility with automated assembly, and automotive-grade reliability per AEC-Q101.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage under varying load and supply conditions. Its planar die construction ensures consistent electrical performance and thermal stability across -65°C to +150°C operating range.
The device delivers 500 mW power dissipation at lead temperature of 75°C and 370 mW at ambient 25°C, with thermal resistance junction-to-ambient of 338°C/W on FR-4 PCB - enabling use in compact, thermally constrained automotive modules without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V nominal, 6.4–7.2 V range at 5 mA - defines regulated output voltage in shunt regulator circuits |
| Zener Impedance (ZZT) | 15 Ω max at 1 kHz and 5 mA - determines regulation sensitivity to load current changes |
| Reverse Leakage (IR) | 2.0 µA max at 4.5 V - ensures minimal quiescent current in standby power domains |
| Power Dissipation (PD) | 370 mW at TA = 25°C - sets maximum continuous power handling on standard PCB layout |
| Temperature Coefficient | +1.2 mV/°C - enables predictable voltage drift compensation in temperature-critical references |
| Package | SOD123 - surface-mount outline with 2.55–2.85 mm body width, compatible with 0.9 mm pad pitch |
Pinout & Package
Two-terminal SOD123 package: cathode marked by band; anode and cathode terminals defined by polarity marking only - no internal pin numbering. Mounting requires cathode-band orientation verification during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system GND or lower-potential rail; establishes reference point for zener voltage drop |
| Cathode | Regulated output node | Provides stable 6.8 V relative to anode; sinks current to maintain voltage during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and body electronics |
| Lead-free & halogen-free construction | Meets RoHS 2011/65/EU and Diodes Inc.'s "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb) |
| Planar die technology | Enables tight 5% zener voltage tolerance and repeatable breakdown characteristics across production lots |
| Moisture Sensitivity Level 1 | Eliminates bake requirements prior to reflow; supports direct placement after dry pack opening |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring 12 V battery rail in engine control unit for undervoltage/overvoltage detection. IC Role / Device Role / Timing Role: Shunt voltage reference for comparator input stage. Use Value: Stable 6.8 V threshold enables accurate fault detection across -40°C to +125°C ambient with <±2% total error. |
Use Scenario: Providing bias voltage for op-amp input stage in 4–20 mA loop transmitter. IC Role / Device Role / Timing Role: Precision voltage clamp protecting analog front-end from transient surges. Use Value: 15 Ω dynamic impedance ensures <10 mV regulation error under 1 mA load variation. |
| USB-C Port Overvoltage Protection | Smart Meter Reference Calibration |
Use Scenario: Clamping VBUS line against ESD and load dump transients in automotive USB-C docking station. IC Role / Device Role / Timing Role: Secondary overvoltage suppression element downstream of TVS diode. Use Value: 2.0 µA leakage at 4.5 V prevents false triggering while maintaining fast response to >7 V excursions. |
Use Scenario: Calibrating ADC reference in utility smart meter during factory programming. IC Role / Device Role / Timing Role: Traceable voltage standard for one-time calibration offset adjustment. Use Value: ±5% initial tolerance and +1.2 mV/°C TC allow post-calibration drift <±0.5% over 10-year field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4688-TP (Micro Commercial) | Same 6.8 V nominal, but ±5% tolerance and 20 Ω ZZT; not AEC-Q101 qualified | Limited to commercial-grade consumer power supplies; unsuitable for automotive environments | Select only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
| BZX84-C6V8 (Nexperia) | 6.8 V nominal, ±5%, 40 Ω ZZT, SOT23 package - larger footprint and higher impedance than SOD123 | Requires PCB redesign due to different land pattern; less precise regulation under dynamic loads | Choose only if existing SOT23 footprint must be retained and 40 Ω impedance is acceptable |
Compared with MMSZ4688-TP and BZX84-C6V8, BZT52C6V8Q-7-F offers superior regulation accuracy (15 Ω vs. ≥20 Ω), automotive qualification, and SOD123 space efficiency - making it optimal for next-generation vehicle ECUs and high-reliability industrial sensors.
Availability
BZT52C6V8Q-7-F is available at Aetrix Electronics and suitable for automotive power monitoring, industrial sensor signal conditioning, and USB-C port overvoltage protection requiring stable component supply and full traceability.
Supply support for BZT52C6V8Q-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT52 series targets cost-effective, high-volume Zener reference needs in automotive electronics - designed specifically to meet AEC-Q101 stress testing and deliver stable voltage regulation in harsh thermal environments.
FAQ
What is the maximum power dissipation of BZT52C6V8Q-7-F at 75°C lead temperature?
The device is rated for 500 mW power dissipation when measured at TL = +75°C, per the Absolute Maximum Ratings table in DS18004 Rev. 38-2. This derated value accounts for thermal conduction through the leadframe and enables safe operation in high-temperature under-hood locations without heatsinking.
Is BZT52C6V8Q-7-F compatible with lead-free reflow profiles?
Yes - the device uses matte tin finish over alloy 42 leadframe and is fully RoHS-compliant. It meets MIL-STD-202 Method 208 solderability requirements and is qualified for standard Pb-free reflow profiles up to 260°C peak temperature, with no special pre-bake needed (MSL Level 1).
How does the temperature coefficient affect voltage regulation accuracy over automotive temperature range?
With a +1.2 mV/°C coefficient, BZT52C6V8Q-7-F exhibits approximately ±84 mV drift from -40°C to +125°C - adding ±1.2% to the nominal 6.8 V. This is factored into design margins for ECU power monitors where total error budget includes tolerance, drift, and noise.
Can this Zener diode replace a 6.2 V part in an existing circuit?
No - the 6.8 V nominal voltage differs significantly from 6.2 V, altering regulation thresholds and potentially causing functional failure in comparator-based protection circuits. Substitution requires verification of all downstream logic thresholds, hysteresis margins, and thermal drift effects.
BZT52C6V8Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5.88%
- Power - Max:
- 370 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C6V8Q-7-F FAQ
1.How can I place an order for BZT52C6V8Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C6V8Q-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 BZT52C6V8Q-7-F reliable?
The price and inventory of BZT52C6V8Q-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 BZT52C6V8Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C6V8Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C6V8Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C6V8Q-7-F?
BZT52C6V8Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C6V8Q-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 BZT52C6V8Q-7-F?
For technical support, including BZT52C6V8Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C6V8Q-7-F requirements.
6.How does Aetrix verify that BZT52C6V8Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C6V8Q-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 BZT52C6V8Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C6V8Q-7-F?
All BZT52C6V8Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C6V8Q-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 BZT52C6V8Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C6V8Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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