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Taiwan Semiconductor Corporation BZV55C5V1 L1G
- Part No.:
- BZV55C5V1 L1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
BZV55C5V1 L1G.pdf
- Description:
- DIODE ZENER 5.1V 500MW MINI MELF
- Quantity:
- Payment:
- Shipping:
Inventory:5,695
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Product details
Overview
BZV55C5V1 L1G from Taiwan Semiconductor is a 500mW surface-mount Zener diode with nominal zener voltage 5.1V ±5%, 35Ω dynamic impedance at 5mA test current, and maximum junction temperature of +175°C. It serves as a precision voltage reference or low-voltage stabilizer in DC/DC converters and power adapters.
For engineers reviewing the BZV55C5V1 L1G datasheet, BZV55C5V1 L1G pinout, BZV55C5V1 L1G application, or BZV55C5V1 L1G equivalent, key selection criteria include zener tolerance, thermal resistance (300°C/W), cathode-band polarity marking, MMELF package compatibility, and leakage current ≤0.1µA at 1V reverse bias.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation across varying load currents. Its 5.1V nominal zener voltage is specified at 5mA test current (IZT), with dynamic impedance of 35Ω and knee impedance of 550Ω at 1mA (IZK).
The device uses a hermetically sealed glass MMELF package with matte tin-plated leads compliant with J-STD-002 solderability. Junction temperature range spans −65°C to +175°C, and forward voltage is 1.0V at 10mA forward current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.8–5.4V @ 5mA - ensures ±5% tolerance for stable 5.1V reference under typical bias |
| Power Dissipation (PD) | 500mW - limits continuous thermal stress in compact surface-mount layouts |
| Zener Impedance (ZZT) | 35Ω @ 5mA - determines output voltage variation under load transients |
| Leakage Current (IR) | ≤0.1µA @ 1V reverse - guarantees minimal standby current in battery-sensitive circuits |
| Junction Temperature (TJ) | −65°C to +175°C - supports operation in automotive under-hood and industrial environments |
| Forward Voltage (VF) | 1.0V @ 10mA - defines conduction threshold when used in bidirectional protection or clamping |
Pinout & Package
Package: MMELF (Miniature Metal Electrode Leadless Face), DO-213AA variant, 3.50±0.20mm body length, Ø1.50±0.10mm diameter, cathode indicated by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias regulation; forms reference ground return path |
| Cathode | Zener breakdown terminal / voltage regulation output node | Connected to regulated rail; black band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables predictable 5.1V reference without post-production trimming in cost-sensitive designs |
| Hermetically sealed glass construction | Prevents moisture ingress and long-term parameter drift in humid or high-reliability environments |
| RoHS-compliant matte tin plating | Ensures reliable solder wetting per J-STD-002 and eliminates lead-based process concerns |
| 300°C/W junction-to-ambient thermal resistance | Defines maximum power derating curve above 25°C ambient-critical for thermal layout validation |
Applications
| DC/DC Converter Reference | USB Power Adapter Stabilization |
|---|---|
Use Scenario: Providing feedback voltage reference for secondary-side regulation in isolated flyback converters. IC Role / Device Role / Timing Role: Zener diode establishes precise 5.1V threshold for optocoupler-driven error amplifier input. Use Value: Tight ±5% VZ tolerance and low 35Ω ZZT minimize output voltage drift across line/load/temperature. | Use Scenario: Stabilizing auxiliary bias rail in offline AC/DC adapters powering USB charging ICs. IC Role / Device Role / Timing Role: Acts as shunt regulator to clamp and stabilize 5V standby supply before LDO stage. Use Value: 500mW rating handles transient surges; ≤0.1µA IR prevents unnecessary quiescent loss in no-load conditions. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module (BCM) Voltage Clamp |
Use Scenario: Biasing and level-shifting analog sensor outputs in 24V industrial PLC I/O modules. IC Role / Device Role / Timing Role: Provides stable 5.1V reference for op-amp gain-setting resistors and ADC reference dividers. Use Value: −65°C to +175°C TJ range ensures functionality across extended industrial temperature profiles. | Use Scenario: Protecting microcontroller I/O pins from load-dump transients in 12V automotive BCMs. IC Role / Device Role / Timing Role: Functions as low-leakage clamping diode in parallel with ESD protection network. Use Value: 1.0V forward voltage enables fast turn-on during overvoltage events; glass seal resists under-hood contamination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F (Diodes Inc.) | Same 5.1V ±5%, SOD-123 package, 200mW rating, 17Ω ZZT @ 20mA | Lower power rating requires derating in >250mW continuous use; smaller footprint | Select when board space is constrained and average power <200mW |
| BZX55C5V1 (Nexperia) | Same 5.1V ±5%, DO-35 axial lead, 500mW, 60Ω ZZT @ 5mA | Through-hole mounting only; higher impedance increases regulation error under load | Select for legacy through-hole designs or prototyping with breadboards |
Compared with MMBZ5221BS-7-F and BZX55C5V1, the BZV55C5V1 L1G delivers identical voltage accuracy and full 500mW capability in a surface-mount MMELF package with superior thermal resistance (300°C/W vs. ~400°C/W for SOD-123), making it optimal for thermally dense PCBs requiring sustained power dissipation.
Availability
BZV55C5V1 L1G is available at Aetrix Electronics and suitable for DC/DC converter reference, USB power adapter stabilization, and industrial sensor signal conditioning requiring stable component supply and RoHS-compliant sourcing.
Supply support for BZV55C5V1 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, rectifiers, Zener diodes, and TVS components for industrial and consumer applications.
The BZV55C5V1 L1G belongs to TSC's BZV55C series of precision Zener diodes designed specifically for compact, high-reliability voltage reference and stabilization in surface-mount power management circuits.
FAQ
What is the zener voltage tolerance for BZV55C5V1 L1G?
The BZV55C5V1 L1G has a nominal zener voltage of 5.1V with a standard tolerance of ±5%, meaning the actual measured VZ falls between 4.8V and 5.4V when tested at 5mA (IZT) under pulse conditions. This tolerance is confirmed in the Electrical Specifications table on page 2 of the official Taiwan Semiconductor datasheet (Version H2301).
What package type does BZV55C5V1 L1G use?
BZV55C5V1 L1G uses the MMELF (Miniature Metal Electrode Leadless Face) package, a surface-mount variant of DO-213AA with 3.50±0.20mm body length and Ø1.50±0.10mm diameter. Cathode polarity is marked by a black band, and leads are matte tin-plated per J-STD-002 solderability requirements.
What is the maximum power dissipation of BZV55C5V1 L1G?
The BZV55C5V1 L1G has a maximum power dissipation (PD) of 500mW at 25°C ambient temperature. Derating is required above 25°C per the Power Dissipation vs. Ambient Temperature curve (Fig.1), with thermal resistance RθJA = 300°C/W defining the linear derating slope.
How does the leakage current of BZV55C5V1 L1G compare to similar Zeners?
BZV55C5V1 L1G specifies leakage current (IR) ≤0.1µA at 1V reverse voltage (VR), which is among the lowest in its voltage class. This value is tighter than many 5.1V Zeners (e.g., BZX55C5V1 specifies ≤1.0µA), making BZV55C5V1 L1G especially suitable for ultra-low-power standby circuits.
Is BZV55C5V1 L1G RoHS compliant?
Yes, BZV55C5V1 L1G is RoHS compliant. The device uses matte tin-plated leads and hermetically sealed glass construction, meeting EU Directive 2011/65/EU requirements. Compliance is explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet (Version H2301).
BZV55C5V1 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):
- 5.1 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 1 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
BZV55C5V1 L1G FAQ
1.How can I place an order for BZV55C5V1 L1G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV55C5V1 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 BZV55C5V1 L1G reliable?
The price and inventory of BZV55C5V1 L1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV55C5V1 L1G is usually 5 days.
3.What payment methods are accepted for BZV55C5V1 L1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV55C5V1 L1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV55C5V1 L1G?
BZV55C5V1 L1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV55C5V1 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 BZV55C5V1 L1G?
For technical support, including BZV55C5V1 L1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV55C5V1 L1G requirements.
6.How does Aetrix verify that BZV55C5V1 L1G is sourced from the original manufacturer or authorized distributors?
All BZV55C5V1 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 BZV55C5V1 L1G meets industry standards.
7.What is the process for return or replacement of BZV55C5V1 L1G?
All BZV55C5V1 L1G units undergo pre-shipment inspection (PSI). If there is an issue with BZV55C5V1 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 BZV55C5V1 L1G part is unused and in its original packaging.
Return procedure for BZV55C5V1 L1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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