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onsemi MC7806CT
- Part No.:
- MC7806CT
- Manufacturer:
- onsemi
- Package:
- TO-220-3
- Datasheet:
-
MC7806CT.pdf
- Description:
- IC REG LINEAR 6V 1A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,065
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Product details
Overview
MC7806CT from onsemi is a fixed-output +6 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 6 V output across 5 mA–1.0 A load range with ≤2.0 V dropout at full load, supporting local regulation in power supplies, industrial controls, and embedded systems requiring low-noise DC bias.
For engineers reviewing the MC7806CT datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs (VO = 5.75–6.25 V @ 25°C, VI ≤ 35 V, RR = 62 dB), thermal performance (RJA = 92 °C/W), package dimensions, real-world use cases, and two validated alternative parts for design flexibility.
Technical Context
The MC7806CT uses monolithic bipolar pass transistor architecture with built-in safe-area compensation to dynamically reduce short-circuit current as VCE increases-preventing second breakdown during fault conditions. Its internal bandgap reference and error amplifier maintain output stability over temperature (TCVO = −0.4 mV/°C) and line/load variations.
It operates as a three-terminal series regulator requiring no external components for basic functionality. Input-to-output differential must remain ≥2.0 V under ripple conditions, and input bypassing with ≥0.33 µF capacitor is recommended when trace length exceeds 6 inches or output capacitance is large.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 6.0 V ±5% (5.75–6.25 V at TJ = 25°C); ensures compatibility with 6 V logic and analog rails |
| Output Current | 1.0 A continuous (2.2 A peak); supports moderate-power loads without external boost circuitry |
| Input Voltage Range | 7.5–35 V DC; requires ≥2.0 V headroom above output for regulation under worst-case ripple |
| Ripple Rejection | 62 dB at 120 Hz; suppresses AC line noise in unregulated DC supplies feeding the input |
| Dropout Voltage | 2.0 V at IO = 1.0 A; defines minimum input needed for regulation at full load |
| Quiescent Current | 3.3–6.0 mA; contributes <0.1 W loss at 35 V input, critical for standby power budgeting |
| Thermal Resistance | RJA = 92 °C/W (TO-220, no heatsink); limits max ambient to ~55°C at full load without heatsinking |
Pinout & Package
MC7806CT uses the industry-standard TO-220 package (Case 221AB), with metal tab electrically connected to Pin 2 (Ground). Heatsink mounting surface must be isolated from other potentials unless grounded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input; must be ≥8.0 V nominal to ensure 2.0 V dropout margin at full load |
| Pin 2 | Ground | Common reference for input and output; also connects to heatsink tab-requires isolation if heatsink is not grounded |
| Pin 3 | Output | Regulated +6 V supply; decoupling capacitor (≥0.1 µF) recommended for transient response |
Key Features
| Feature | Design Value |
|---|---|
| Internal Thermal Shutdown | Activates at TJ ≈ 150°C, halting output until junction cools-prevents permanent damage during overload or poor heatsinking |
| Short-Circuit Current Limit | 0.2 A typical (at VIN = 35 V); protects pass transistor during output faults without external fusing |
| Safe-Area Compensation | Reduces short-circuit current as VCE rises-avoids secondary breakdown in high-VCE/high-IC fault modes |
| No External Components Required | Operates as standalone regulator; eliminates BOM cost and layout area for feedback network or compensation |
| Output Noise | 10 µV/V RMS (10 Hz–100 kHz); suitable for analog sensor biasing and low-noise op-amp supplies |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
|
Use Scenario: Providing clean +6 V rail to microcontroller I/O buffers and CAN transceiver logic in a 24 V vehicle system. IC Role / Device Role / Timing Role: Local post-regulator stepping down switched 12–16 V intermediate bus to stable 6 V for digital logic. Use Value: Internal short-circuit protection withstands load dump transients; 62 dB ripple rejection suppresses alternator noise. |
Use Scenario: Powering relay drivers and LED indicators in a 12 V automotive control unit. IC Role / Device Role / Timing Role: Fixed-voltage source delivering regulated 6 V to discrete driver stages with minimal external parts. Use Value: Safe-area compensation prevents latch-up during inductive kickback; TO-220 tab enables direct chassis heatsinking. |
| Legacy Instrumentation Analog Front-End | Point-of-Sale Terminal Logic Rail |
|
Use Scenario: Biasing precision op-amps and ADC reference buffers in benchtop test equipment. IC Role / Device Role / Timing Role: Low-noise 6 V supply for analog signal conditioning circuits sensitive to supply ripple. Use Value: 10 µV/V output noise meets sub-12-bit SNR requirements; thermal shutdown prevents drift-induced calibration errors. |
Use Scenario: Generating 6 V for display backlight drivers and keypad scan logic in retail kiosks. IC Role / Device Role / Timing Role: Cost-optimized primary regulator replacing switching solutions where EMI must be minimized. Use Value: No external components reduce bill-of-materials; 1.0 A output supports multiple parallel LED strings without derating. |
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 (Texas Instruments) | Same 6 V output, 1.0 A rating, TO-220 package; higher RJA = 100 °C/W; lower ripple rejection (55 dB) | Suitable for less demanding thermal environments; less effective against 120 Hz line noise | Select when TI sourcing preference exists and thermal margin >10°C is available |
| NCV7806BDTAR4G (onsemi) | Automotive-grade variant; AEC-Q100 qualified, wider temp range (−40°C to +150°C), same electrical specs | Required for under-hood or safety-critical automotive modules; identical pinout and footprint | Choose for automotive production; otherwise MC7806CT suffices for industrial/commercial use |
Compared with LM7806CDT/NOPB, MC7806CT offers superior ripple rejection and thermal efficiency; compared with NCV7806BDTAR4G, it lacks automotive qualification but costs less and meets commercial-grade reliability requirements.
Availability
MC7806CT is available at Aetrix Electronics and suitable for industrial control panels, point-of-sale terminals, and legacy instrumentation requiring stable component supply with long lifecycle support.
Supply support for MC7806CT 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 focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The MC7800 series was designed as a robust, drop-in replacement for legacy 78xx regulators-emphasizing reliability, integrated protection, and ease of use in cost-sensitive, thermally constrained designs.
FAQ
What is the maximum input voltage for MC7806CT?
The absolute maximum input voltage for MC7806CT is 35 V DC, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable long-term use, keep input ≤30 V with adequate derating for ripple peaks and transients.
Does MC7806CT require an input bypass capacitor?
Yes-MC7806CT requires a minimum 0.33 µF input bypass capacitor (tantalum, ceramic, or film) placed directly across Pins 1 and 2. This stabilizes operation under high-frequency noise and long PCB traces, preventing oscillation or dropout during fast load transients.
Can MC7806CT be used in adjustable configurations?
Yes-MC7806CT can be configured as an adjustable regulator using external resistors per Figure 10 in the datasheet. However, its internal 6 V reference is optimized for fixed operation; adjustable use sacrifices accuracy, line/load regulation, and thermal performance versus dedicated adjustable regulators like LM317.
What is the thermal resistance of MC7806CT in free air?
MC7806CT has a junction-to-ambient thermal resistance (RJA) of 92 °C/W in the standard TO-220 package with no heatsink. At 1.0 A output and 30 V input, power dissipation reaches ~24 W-requiring a heatsink to maintain TJ < 125°C in most real-world conditions.
Is MC7806CT RoHS compliant and lead-free?
Yes-MC7806CT is a Pb-free device, fully compliant with RoHS Directive 2011/65/EU and JESD97. The "T" suffix denotes TO-220 packaging with lead-free terminations and green molding compound, certified per onsemi's material declarations.
MC7806CT 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):
- 8 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
MC7806CT FAQ
1.How can I place an order for MC7806CT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7806CT 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 MC7806CT reliable?
The price and inventory of MC7806CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7806CT is usually 5 days.
3.What payment methods are accepted for MC7806CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7806CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7806CT?
MC7806CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7806CT 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 MC7806CT?
For technical support, including MC7806CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7806CT requirements.
6.How does Aetrix verify that MC7806CT is sourced from the original manufacturer or authorized distributors?
All MC7806CT 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 MC7806CT meets industry standards.
7.What is the process for return or replacement of MC7806CT?
All MC7806CT units undergo pre-shipment inspection (PSI). If there is an issue with MC7806CT, 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 MC7806CT part is unused and in its original packaging.
Return procedure for MC7806CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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