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onsemi BZX55C6V8_T50A
- Part No.:
- BZX55C6V8_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX55C6V8_T50A.pdf
- Description:
- DIODE ZENER 6.8V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:7,980
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Product details
Overview
BZX55C6V8_T50A from Fairchild Semiconductor is a 6.8 V, ±5% tolerance Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 8 Ω dynamic impedance at 5 mA test current and 0.1 μA maximum reverse leakage at 5.2 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog circuits.
For engineers reviewing the BZX55C6V8_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, thermal derating behavior, junction temperature range, and DO-35 mechanical compatibility in space-constrained PCB layouts.
Technical Context
This device operates as a silicon planar Zener diode, relying on controlled avalanche breakdown in the reverse-biased p-n junction to maintain stable voltage regulation. Its 6.8 V nominal zener voltage is specified at 5 mA test current with 8 Ω dynamic impedance, ensuring predictable regulation under small-signal load variations.
The DO-35 glass package provides hermetic sealing and supports operation across –65°C to +200°C junction and storage temperatures. Power dissipation derates linearly at 4.0 mW/°C above 75°C lead temperature, requiring thermal layout consideration for sustained 500 mW operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V min / 7.2 V max at IZ = 5 mA - defines usable regulation window for 6.8 V nominal reference |
| Tolerance | ±5% - enables direct substitution in designs targeting 6.8 V with 0.34 V total variation budget |
| Dynamic Impedance (ZZ) | 8 Ω at IZ = 5 mA - determines output voltage shift under ±1 mA load change (±8 mV) |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous DC power in standard lead-length mounting |
| Reverse Leakage (IR) | 0.1 μA @ VR = 5.2 V - ensures minimal quiescent current draw in high-impedance bias networks |
| Junction Temp Range | –65°C to +200°C - supports operation in automotive under-hood or industrial high-temp environments |
| Forward Voltage (VF) | 1.3 V max @ IF = 100 mA - confirms standard silicon diode conduction for polarity verification or dual-use clamping |
Pinout & Package
DO-35 glass axial package with cathode indicated by color band; two-terminal device with no internal connections beyond anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connects to lower-potential node in forward bias; used for polarity check or bidirectional clamping configurations |
| Cathode | Zener breakdown terminal | Marked with color band; connects to higher-potential node during reverse-bias regulation or overvoltage protection |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables single-bin sourcing without sorting, reducing BOM complexity in cost-sensitive consumer electronics |
| DO-35 glass package | Provides hermetic seal and proven reliability for long-term stability in humid or corrosive ambient conditions |
| 500 mW power rating | Supports regulation in moderate-current analog references (e.g., op-amp biasing, ADC reference dividers) without heatsinking |
| Low 0.1 μA leakage at 5.2 V | Minimizes error in high-resistance voltage divider networks used in battery-powered sensor interfaces |
Applications
| Voltage Reference for Op-Amp Circuits | Overvoltage Clamp in Signal Conditioning |
|---|---|
Use Scenario: Stable 6.8 V reference for rail-to-rail op-amp biasing in portable instrumentation amplifiers. IC Role / Device Role / Timing Role: Zener diode providing fixed reference voltage to establish common-mode input level. Use Value: Tight ±5% tolerance and low 8 Ω ZZ ensure <±10 mV drift across production units and load variations. | Use Scenario: Protection of ADC input pins against transient surges exceeding 6.8 V in industrial data acquisition modules. IC Role / Device Role / Timing Role: Reverse-biased shunt clamp limiting signal swing to safe levels before front-end amplifier. Use Value: Fast avalanche response and 0.1 μA leakage preserve signal integrity while blocking >5.2 V faults. |
| Low-Power Sensor Bias Network | Power Supply Rail Stabilization |
Use Scenario: Biasing thermistor or photodiode bridges in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Precision voltage source setting bridge excitation voltage independent of supply fluctuations. Use Value: 500 mW rating allows use with 10 kΩ+ divider resistors, minimizing standby current drain. | Use Scenario: Stabilizing unregulated 9 V wall adapter output feeding microcontroller reset circuitry. IC Role / Device Role / Timing Role: Shunt regulator maintaining clean 6.8 V for brown-out detection threshold. Use Value: DO-35 package fits compact layouts; –65°C to +200°C range ensures reliability across seasonal temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 6.8 V nominal, ±5% tolerance, but 1.0 W power rating in DO-41 package | Requires larger PCB footprint and supports higher continuous power; less suitable for ultra-compact layouts | Select when >500 mW dissipation or enhanced thermal margin is required |
| BZX55C6V8 (ON Semi) | Identical electrical specs and DO-35 package; same top-marking convention and 5 mA test current | No functional or mechanical differences; qualified for same industrial temperature range | Drop-in replacement with identical sourcing and qualification history |
Compared with 1N4734A and BZX55C6V8 (ON Semi), the BZX55C6V8_T50A offers identical regulation performance in the smallest standard axial package, making it optimal for space-constrained designs where 500 mW suffices and legacy Fairchild qualification is required.
Availability
BZX55C6V8_T50A is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power sensor biasing applications requiring stable component supply and long-lifecycle support.
Supply support for BZX55C6V8_T50A 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The BZX55C6V8_T50A belongs to the BZX55C series of general-purpose Zener diodes designed for precision voltage regulation and transient suppression in cost-sensitive industrial and consumer electronics.
FAQ
What is the zener voltage tolerance for BZX55C6V8_T50A?
The BZX55C6V8_T50A has a ±5% zener voltage tolerance, meaning its actual breakdown voltage falls between 6.4 V and 7.2 V when measured at 5 mA test current and 25°C. This tolerance is guaranteed per the Fairchild datasheet Rev. D1 and applies directly to the BZX55C6V8_T50A device marking and screening.
Does BZX55C6V8_T50A support high-temperature operation?
Yes, the BZX55C6V8_T50A is rated for junction and storage temperatures from –65°C to +200°C. Its DO-35 glass package maintains parameter stability across this full range, and the device derates power linearly at 4.0 mW/°C above 75°C lead temperature-making it suitable for under-hood automotive or industrial control cabinet deployments.
What is the maximum reverse leakage current for BZX55C6V8_T50A?
The BZX55C6V8_T50A specifies a maximum reverse leakage current of 0.1 μA at 5.2 V reverse voltage and 25°C. This low leakage ensures minimal loading in high-impedance reference networks and preserves accuracy in battery-powered sensor biasing circuits where current consumption must remain below 1 μA.
Can BZX55C6V8_T50A be used as a forward-biased diode?
Yes, the BZX55C6V8_T50A exhibits standard silicon diode forward conduction with a maximum forward voltage of 1.3 V at 100 mA. While optimized for reverse-bias Zener operation, it can serve as a polarity indicator or low-current rectifier in auxiliary circuits-though dedicated switching diodes are preferred for high-frequency or high-current forward applications.
Is BZX55C6V8_T50A RoHS compliant?
The BZX55C6V8_T50A was manufactured under Fairchild's pre-acquisition environmental compliance program. As a DO-35 glass diode produced prior to 2016, it meets RoHS Directive 2002/95/EC requirements with lead content limited to exempted glass encapsulation. Full compliance documentation is available upon request for legacy design validation.
BZX55C6V8_T50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 100 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
BZX55C6V8_T50A FAQ
1.How can I place an order for BZX55C6V8_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX55C6V8_T50A 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 BZX55C6V8_T50A reliable?
The price and inventory of BZX55C6V8_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX55C6V8_T50A is usually 5 days.
3.What payment methods are accepted for BZX55C6V8_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX55C6V8_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX55C6V8_T50A?
BZX55C6V8_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX55C6V8_T50A 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 BZX55C6V8_T50A?
For technical support, including BZX55C6V8_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX55C6V8_T50A requirements.
6.How does Aetrix verify that BZX55C6V8_T50A is sourced from the original manufacturer or authorized distributors?
All BZX55C6V8_T50A 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 BZX55C6V8_T50A meets industry standards.
7.What is the process for return or replacement of BZX55C6V8_T50A?
All BZX55C6V8_T50A units undergo pre-shipment inspection (PSI). If there is an issue with BZX55C6V8_T50A, 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 BZX55C6V8_T50A part is unused and in its original packaging.
Return procedure for BZX55C6V8_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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