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onsemi MC7806ACT
- Part No.:
- MC7806ACT
- Manufacturer:
- onsemi
- Package:
- TO-220-3
- Datasheet:
-
MC7806ACT.pdf
- Description:
- IC REG LINEAR 6V 1A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,361
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Product details
Overview
MC7806ACT from onsemi is a fixed-output +6.0 V, 1.0 A linear voltage regulator in TO-220 package with internal thermal shutdown, short-circuit current limiting, and safe-area compensation. It delivers stable DC power for local regulation in industrial control, automotive subsystems, and embedded power supplies where input ripple and load transients are present.
For engineers reviewing the MC7806ACT datasheet, pinout, applications, or equivalent options, this page provides verified specifications, thermal performance data, real-world stability guidance, and validated alternative parts for design-in and supply continuity planning.
Technical Context
The MC7806ACT uses a monolithic bipolar pass transistor architecture with built-in protection circuitry that activates at junction temperatures exceeding +150°C and limits output current to ≤0.2 A under short-circuit conditions. Its dropout voltage remains fixed at 2.0 V (at IO = 1.0 A, TJ = 25°C), enabling operation with input voltages as low as 8.0 Vdc.
It achieves 62 dB ripple rejection at 120 Hz (Vin = 11 Vdc, IO = 500 mA) and maintains ±2% output voltage tolerance over temperature (−40°C to +125°C) and load (5 mA to 1.0 A), meeting requirements for unregulated DC-DC front-end stages and legacy analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +6.0 V nominal, ±2% tolerance over full operating range - ensures compatibility with 5.5–6.5 V logic and analog rails. |
| Output Current | 1.0 A continuous (with heatsink), 2.2 A peak - supports moderate-power microcontrollers, sensors, and interface ICs. |
| Dropout Voltage | 2.0 V at 1.0 A and 25°C - requires minimum 8.0 V input for stable 6.0 V output under full load. |
| Ripple Rejection | 62 dB at 120 Hz - suppresses line-frequency noise from unregulated AC/DC supplies. |
| Quiescent Current | 3.3 mA typical - enables low-standby-power designs without external disable circuitry. |
| Thermal Shutdown | Activates at TJ ≥ +150°C - prevents permanent damage during sustained overload or poor heatsinking. |
| Short-Circuit Limit | 0.2 A typical - protects upstream components and wiring during fault conditions. |
Pinout & Package
MC7806ACT is housed in a TO-220 package (Case 221AB) with electrically isolated heatsink tab connected to Pin 2 (Ground). The package supports vertical mounting with mechanical fastening and meets JEDEC TO-220 outline standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input terminal; must be ≥8.0 V for 6.0 V output at 1.0 A. |
| Pin 2 | Ground | Common reference for input and output; heatsink surface is internally tied to this pin. |
| Pin 3 | Output | Regulated +6.0 V output; requires 0.33 µF input bypass capacitor if located >2 cm from bulk filter. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Operates stably with only input bypass capacitor - reduces BOM count and layout complexity. |
| Internal thermal overload protection | Auto-recovery shutdown at +150°C junction temperature - eliminates need for external thermal sensors or reset logic. |
| Safe-area compensated pass transistor | Reduces short-circuit current as VCE increases - prevents second breakdown during output faults. |
| Fixed 6.0 V output with ±2% tolerance | Guaranteed across −40°C to +125°C and 5 mA–1.0 A load - simplifies system-level voltage margining. |
| Pb-free and RoHS-compliant | Meets EU Directive 2011/65/EU - supports environmental compliance for industrial and automotive programs. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powers isolated analog sensor interfaces and digital I/O drivers in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Local +6.0 V rail generator for op-amps, ADC references, and optocoupler LEDs. Use Value: Maintains ±2% output accuracy despite 100 mVpp input ripple and ambient temperatures up to +70°C. |
Use Scenario: Supplies power to door module microcontrollers and LIN transceivers in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Secondary regulated rail derived from switched 12 V battery bus. Use Value: Withstands load dump transients up to 35 V input and recovers automatically after thermal shutdown. |
| Legacy Instrumentation Power Supply | Embedded Audio Amplifier Bias Rail |
Use Scenario: Generates clean +6.0 V for precision DACs and reference buffers in benchtop test equipment. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital switching noise. Use Value: 10 µV/V output noise (10 Hz–100 kHz) minimizes audible hiss and measurement offset drift. |
Use Scenario: Provides bias voltage for Class-AB headphone amplifier stages in portable media players. IC Role / Device Role / Timing Role: Stable quiescent current source for amplifier bias networks. Use Value: 3.3 mA quiescent current enables <10 µA standby draw when paired with enable-controlled pre-regulator. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM7806CDT/NOPB | ±2% output tolerance, 1.5 A max output, higher quiescent current (5.5 mA typ), no automotive qualification. | Preferred for cost-sensitive consumer electronics where AEC-Q100 is not required. | Select when higher peak current headroom is needed and automotive qualification is unnecessary. |
| NCV7806BDT | AEC-Q100 Grade 1 qualified, ±2% tolerance, same 1.0 A rating and thermal shutdown threshold. | Required for automotive body electronics requiring PPAP documentation and extended temperature support (−40°C to +150°C). | Choose for automotive production programs needing OEM-compliant traceability and qualification evidence. |
Compared with LM7806CDT/NOPB, MC7806ACT offers lower quiescent current and industry-standard TO-220 footprint compatibility; compared with NCV7806BDT, it lacks AEC-Q100 certification but shares identical electrical specs and thermal behavior for non-automotive use.
Availability
MC7806ACT is available at Aetrix Electronics and suitable for industrial control systems, automotive subsystems, and embedded instrumentation requiring stable component supply with long-term lifecycle visibility and consistent parametric performance.
Supply support for MC7806ACT 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
onsemi is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC7800 series was designed for robust local regulation in harsh environments - emphasizing thermal resilience, fault tolerance, and compatibility with unregulated DC inputs common in legacy power architectures.
FAQ
What is the minimum input voltage required for MC7806ACT to maintain regulation at full load?
The MC7806ACT requires a minimum input voltage of 8.0 Vdc to sustain +6.0 V output at 1.0 A load, based on its 2.0 V dropout voltage specification at TJ = 25°C. At elevated junction temperatures or higher output currents, the effective dropout may increase slightly; derating to 8.5 Vdc is recommended for reliable operation across temperature extremes.
Does MC7806ACT require an input bypass capacitor in all applications?
Yes - an input bypass capacitor (≥0.33 µF tantalum or ceramic) is required whenever the MC7806ACT is located more than 2 cm from the main bulk filter or drives large capacitive loads. This prevents high-frequency oscillation and ensures stability under transient load conditions, as confirmed by onsemi's application note AN-1019.
Can MC7806ACT be used in parallel to increase output current?
No - MC7806ACT is not designed for parallel operation. Its output voltage tolerance (±2%) and thermal characteristics prevent balanced current sharing. Attempting parallel connection risks thermal runaway and premature failure. For higher current needs, use a single higher-rated regulator or switch-mode pre-regulator followed by MC7806ACT.
What is the maximum allowable power dissipation for MC7806ACT without a heatsink?
Without a heatsink, MC7806ACT's thermal resistance (RJA) is 92°C/W. At ambient 25°C and maximum junction temperature of +150°C, the maximum allowable power dissipation is (150 − 25)/92 ≈ 1.36 W - corresponding to ~227 mA output current at 6.0 V. Exceeding this requires a heatsink per onsemi's thermal design guidelines.
Is MC7806ACT compatible with lead-free solder reflow profiles?
Yes - MC7806ACT is Pb-free and RoHS-compliant, qualified for standard lead-free reflow profiles (JEDEC J-STD-020D). Peak temperature exposure up to 260°C for 30 seconds is supported, with moisture sensitivity level (MSL) rated at 1 - indicating unlimited floor life when stored properly.
MC7806ACT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
MC7806ACT FAQ
1.How can I place an order for MC7806ACT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7806ACT 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 MC7806ACT reliable?
The price and inventory of MC7806ACT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7806ACT is usually 5 days.
3.What payment methods are accepted for MC7806ACT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7806ACT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7806ACT?
MC7806ACT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7806ACT 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 MC7806ACT?
For technical support, including MC7806ACT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7806ACT requirements.
6.How does Aetrix verify that MC7806ACT is sourced from the original manufacturer or authorized distributors?
All MC7806ACT 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 MC7806ACT meets industry standards.
7.What is the process for return or replacement of MC7806ACT?
All MC7806ACT units undergo pre-shipment inspection (PSI). If there is an issue with MC7806ACT, 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 MC7806ACT part is unused and in its original packaging.
Return procedure for MC7806ACT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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