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Taiwan Semiconductor Corporation BZV55C6V8 L1G
- Part No.:
- BZV55C6V8 L1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
BZV55C6V8 L1G.pdf
- Description:
- DIODE ZENER 6.8V 500MW MINI MELF
- Quantity:
- Payment:
- Shipping:
Inventory:2,036
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Product details
Overview
BZV55C6V8 L1G from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 6.8 V, ±5% tolerance, 500 mW power dissipation, and 8 Ω dynamic impedance at 5 mA test current. It operates as a precision voltage reference or low-voltage stabilizer in DC/DC converters and adapter circuits.
For engineers reviewing the BZV55C6V8 L1G datasheet, BZV55C6V8 L1G pinout, BZV55C6V8 L1G application, or BZV55C6V8 L1G equivalent, key selection criteria include zener voltage accuracy, thermal resistance (300 °C/W), cathode-band polarity marking, MMELF package compatibility, and leakage current of 0.1 µA at 3.0 V reverse bias.
Technical Context
The BZV55C6V8 L1G is a single-die, hermetically sealed glass Zener diode optimized for stable voltage regulation under low-current conditions. Its 6.4–7.2 V zener range (min–max), 5 mA test current, and 8 Ω zener impedance at IZT ensure tight regulation in feedback loops and reference paths.
Designed for operation across –65 °C to +175 °C junction temperature, it features matte tin-plated leads compliant with J-STD-002 solderability and RoHS requirements. The MMELF package provides mechanical robustness and thermal performance suitable for high-reliability board-level integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4–7.2 V (nominal 6.8 V, ±5% tolerance - enables precise 6.8 V reference generation) |
| Test Current (IZT) | 5 mA (standard operating point for zener voltage specification and impedance measurement) |
| Zener Impedance (ZZT) | 8 Ω at IZT = 5 mA (low dynamic impedance ensures minimal output voltage variation under load changes) |
| Power Dissipation (PD) | 500 mW (supports continuous regulation in space-constrained SMT designs without forced cooling) |
| Leakage Current (IR) | 0.1 µA at VR = 3.0 V (ultra-low reverse leakage preserves accuracy in high-impedance reference nodes) |
| Junction Temperature (TJ) | –65 °C to +175 °C (enables use in automotive under-hood and industrial control environments) |
| Forward Voltage (VF) | 1.0 V at IF = 10 mA (defines forward conduction threshold and aids polarity verification during testing) |
Pinout & Package
Package: MMELF (Miniature Metal Electrode Leadless Face), DO-213AA compliant, 3.50 ± 0.20 mm body length, Ø1.50 ± 0.10 mm diameter, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to lower-potential node in zener mode | Enables standard diode conduction path and defines reference ground reference point |
| Cathode | Negative terminal in forward bias; connected to higher-potential node in zener mode | Marked by visible band; serves as regulated output node in shunt regulator configurations |
Key Features
| Feature | Design Value |
|---|---|
| Hermetically sealed glass construction | Prevents moisture ingress and long-term parameter drift in humid or harsh environments |
| ±5% zener voltage tolerance | Supports cost-effective, high-yield designs where tight regulation is required but not ultra-precision |
| MMELF package with matte tin leads | Ensures reliable reflow soldering per J-STD-002 and compatibility with automated SMT assembly |
| Low 0.1 µA leakage at 3.0 V | Maintains reference integrity in battery-powered or high-impedance sensing circuits |
| 300 °C/W junction-to-ambient thermal resistance | Allows direct PCB trace heat sinking without heatsinks in low-power applications |
Applications
| DC/DC Converter Reference | Adapter Voltage Clamp |
|---|---|
Use Scenario: Used in the feedback divider network of isolated flyback or buck converters to regulate output voltage. IC Role / Device Role / Timing Role: Zener diode provides stable 6.8 V reference for optocoupler-based error amplification. Use Value: Tight 6.4–7.2 V range and 8 Ω impedance minimize output voltage drift across line/load/temperature. | Use Scenario: Placed across secondary-side rectifier output in AC/DC wall adapters to limit overvoltage transients. IC Role / Device Role / Timing Role: Shunt clamping device that conducts above 7.2 V to protect downstream linear regulators. Use Value: 500 mW rating and 175 °C max junction temperature support transient energy absorption without failure. |
| Low-Power Sensor Biasing | Microcontroller Reset Circuit |
Use Scenario: Supplies stable bias voltage to analog sensor front-ends in IoT edge nodes powered by coin cells. IC Role / Device Role / Timing Role: Precision voltage reference for ADC reference input or op-amp biasing. Use Value: 0.1 µA leakage at 3.0 V prevents excessive drain on ultra-low-power supplies. | Use Scenario: Configured in RC-reset circuit with microcontroller's reset pin to generate clean power-on reset pulse. IC Role / Device Role / Timing Role: Threshold detector that triggers reset assertion when supply drops below ~6.4 V. Use Value: Defined 6.4–7.2 V window ensures deterministic reset behavior across temperature and unit variance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5234BS-7-F (Diodes Inc.) | Same 6.8 V nominal, ±5%, SOD-323 package (smaller footprint, higher RθJA = 400 °C/W) | Higher thermal resistance limits continuous power in confined layouts; better for ultra-compact designs | Select when board area is constrained and average power < 250 mW |
| BZX55C6V8 (Nexperia) | Identical 6.8 V, ±5%, 500 mW, DO-35 axial lead; not surface-mount | Requires through-hole assembly and manual rework; unsuitable for fully automated SMT lines | Select only for legacy repair, prototyping, or non-SMT production |
Compared with MMBZ5234BS-7-F and BZX55C6V8, the BZV55C6V8 L1G offers optimal balance of SMT compatibility, thermal performance (300 °C/W), and proven reliability in MMELF packaging-making it preferred for volume production of compact, thermally managed DC/DC modules.
Availability
BZV55C6V8 L1G is available at Aetrix Electronics and suitable for DC/DC converter reference, adapter voltage clamp, and low-power sensor biasing requiring stable component supply and consistent parametric performance across manufacturing lots.
Supply support for BZV55C6V8 L1G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, analog ICs, and protection components with global distribution and AEC-Q200 qualified product lines.
The BZV55C6V8 L1G belongs to TSC's BZV55C series of precision Zener diodes engineered for stable voltage referencing and clamping in consumer, industrial, and automotive power systems.
FAQ
What is the zener voltage tolerance of the BZV55C6V8 L1G?
The BZV55C6V8 L1G has a nominal zener voltage of 6.8 V with a tolerance of ±5%, resulting in a guaranteed range of 6.4 V to 7.2 V at 5 mA test current. This tolerance is confirmed in the Electrical Specifications table of the official Taiwan Semiconductor datasheet (Version H2301), and applies under pulse-test conditions (30 ms duration).
Does the BZV55C6V8 L1G have RoHS compliance documentation?
Yes, the BZV55C6V8 L1G is explicitly stated as RoHS compliant in the FEATURES section of the Taiwan Semiconductor datasheet (Version H2301). It meets EU Directive 2011/65/EU requirements, with no restricted substances above threshold limits, and uses matte tin-plated leads compatible with lead-free reflow processes.
What is the maximum junction temperature rating for the BZV55C6V8 L1G?
The BZV55C6V8 L1G has a maximum junction temperature (TJ) of +175 °C and a minimum of –65 °C, as specified in the Absolute Maximum Ratings table. This wide range supports operation in under-hood automotive, industrial motor drives, and high-ambient-temperature power supply designs without derating until ambient exceeds 125 °C.
How is polarity marked on the BZV55C6V8 L1G package?
Polarity is indicated by a visible cathode band on the glass body of the BZV55C6V8 L1G MMELF package. Per the Mechanical Data section, this band identifies the cathode terminal, which must be connected to the higher-potential node in zener regulation mode. The anode is the unmarked end.
What is the zener impedance of the BZV55C6V8 L1G at its rated test current?
The BZV55C6V8 L1G exhibits a zener impedance (ZZT) of 8 Ω at the specified test current of 5 mA, as published in the Electrical Specifications table. This value reflects dynamic resistance under small-signal AC superposition and directly impacts regulation stability in feedback networks.
BZV55C6V8 L1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-213AC, MINI-MELF, SOD-80
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Mini MELF
BZV55C6V8 L1G FAQ
1.How can I place an order for BZV55C6V8 L1G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV55C6V8 L1G 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 BZV55C6V8 L1G reliable?
The price and inventory of BZV55C6V8 L1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV55C6V8 L1G is usually 5 days.
3.What payment methods are accepted for BZV55C6V8 L1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV55C6V8 L1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV55C6V8 L1G?
BZV55C6V8 L1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV55C6V8 L1G 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 BZV55C6V8 L1G?
For technical support, including BZV55C6V8 L1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV55C6V8 L1G requirements.
6.How does Aetrix verify that BZV55C6V8 L1G is sourced from the original manufacturer or authorized distributors?
All BZV55C6V8 L1G 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 BZV55C6V8 L1G meets industry standards.
7.What is the process for return or replacement of BZV55C6V8 L1G?
All BZV55C6V8 L1G units undergo pre-shipment inspection (PSI). If there is an issue with BZV55C6V8 L1G, 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 BZV55C6V8 L1G part is unused and in its original packaging.
Return procedure for BZV55C6V8 L1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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