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onsemi MC7815BD2TR4
- Part No.:
- MC7815BD2TR4
- Manufacturer:
- onsemi
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MC7815BD2TR4.pdf
- Description:
- IC REG LINEAR 15V 1A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,970
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Product details
Overview
MC7815BD2TR4 from onsemi is a fixed-output +15 V, 1.0 A linear voltage regulator in D2PAK-3 (TO-263) package with internal thermal shutdown, short-circuit current limiting, and safe-area compensation. It delivers stable output under input voltages from 17.9 V to 30 V DC and supports industrial temperature operation up to +125°C junction. Used for local regulation in power supplies, motor controls, and embedded systems requiring low-noise, fixed-voltage DC rails.
For engineers reviewing the MC7815BD2TR4 datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage (2.0 V at 1.0 A), ±3% output tolerance (14.4–15.6 V at 25°C), ripple rejection (58 dB at 120 Hz), quiescent current (3.5 mA typical), and thermal resistance (RθJC = 5.0°C/W).
Technical Context
The MC7815BD2TR4 employs a monolithic bipolar pass transistor architecture with built-in protection circuitry: thermal overload shutdown activates at +150°C junction temperature, short-circuit current limit holds peak output at 0.2 A (typical) under fault, and safe-area compensation dynamically reduces short-circuit current as VCE increases. It requires no external components for basic operation but benefits from input bypassing (≥0.33 µF) for stability with long traces.
Its fixed 15 V output is trimmed at wafer level to ±3% tolerance (B-grade), with line regulation ≤7.0 mV over 17.9–30 V input and load regulation ≤1.8 mV across 5 mA–1.0 A output current. Output noise is 10 µV/V RMS (10 Hz–100 kHz), and output impedance is 1.2 mΩ at 1 kHz - critical for transient response in analog and mixed-signal circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +15 V nominal, 14.4–15.6 V (±3%) at TJ = 25°C; maintains 14.25–15.75 V across full load (5 mA–1.0 A) and input range (17.9–30 V) |
| Output Current | 1.0 A continuous (with adequate heatsinking); peak current up to 2.2 A for short durations |
| Dropout Voltage | 2.0 V at IO = 1.0 A and TJ = 25°C - defines minimum headroom needed between input and output |
| Ripple Rejection | 58 dB at 120 Hz (18.5–28.5 V input) - suppresses AC ripple from unregulated supplies |
| Quiescent Current | 3.5 mA typical (max 6.0 mA) - determines no-load power loss and standby efficiency |
| Thermal Resistance | RθJC = 5.0°C/W - enables precise junction temperature estimation when heatsink thermal path is known |
| Operating Junction Temp | −40°C to +150°C - supports industrial and automotive under-hood environments |
Pinout & Package
MC7815BD2TR4 uses the D2PAK-3 (TO-263) surface-mount package (Case 936), with the metal tab (heatsink surface) internally connected to Pin 2 (Ground). This configuration simplifies thermal management and eliminates need for insulating hardware.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input | Unregulated DC input supply (17.9–30 V); must remain ≥2.0 V above output to maintain regulation |
| Pin 2 | Ground | Common reference for input and output; also electrically tied to heatsink tab - requires PCB copper pour for thermal conduction |
| Pin 3 | Output | Stable +15 V regulated output; capable of sourcing up to 1.0 A with proper thermal design |
Key Features
| Feature | Design Value |
|---|---|
| Internal thermal shutdown | Protects against sustained overload by disabling output at +150°C junction temperature - prevents permanent damage without external circuitry |
| Short-circuit current limiting | Clamps fault current to ~0.2 A (typical) at VIN = 35 V - limits power dissipation during output shorts |
| Safe-area compensated pass transistor | Reduces short-circuit current as VCE rises - avoids second breakdown and improves reliability under high-VCE/high-IC stress |
| No external components required | Operates stably with only input bypass capacitor (≥0.33 µF recommended) - reduces BOM count and layout complexity |
| Fixed +15 V output with ±3% tolerance | B-grade accuracy ensures predictable system rail voltage without trimming - simplifies power architecture validation |
Applications
| Industrial PLC Power Supply | Automotive Body Control Module |
|---|---|
|
Use Scenario: Provides clean +15 V rail for microcontroller peripherals, analog sensors, and CAN transceivers in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Primary local regulator converting 24 V DC bus to stable +15 V for analog front-end and digital logic. Use Value: 58 dB ripple rejection suppresses switching noise from upstream DC/DC converters; thermal shutdown ensures survival during ambient temperature excursions up to +70°C cabinet conditions. |
Use Scenario: Supplies +15 V to window lift motor drivers and door lock actuators in automotive body control units (BCUs) meeting AEC-Q100 Class 2 requirements. IC Role / Device Role / Timing Role: Fixed-voltage regulator delivering robust power to high-current loads with integrated short-circuit protection. Use Value: Safe-area compensation prevents latch-up during motor stall events; RθJC = 5.0°C/W enables compact heatsinking on double-sided PCBs with thermal vias. |
| Test Equipment Signal Conditioning | Industrial Motor Drive Auxiliary Supply |
|
Use Scenario: Powers precision op-amps and ADC references in benchtop multimeters and oscilloscope front-ends where low noise and tight voltage accuracy are critical. IC Role / Device Role / Timing Role: Low-noise linear regulator supplying analog signal chain with minimal PSRR-induced error. Use Value: 10 µV/V output noise (10 Hz–100 kHz) and ±3% output tolerance ensure <0.05% gain error in 16-bit measurement systems. |
Use Scenario: Generates isolated +15 V gate drive supply for IGBT half-bridges in variable-frequency drives, derived from main DC bus. IC Role / Device Role / Timing Role: High-current local regulator powering optocoupler drivers and bootstrap circuitry. Use Value: 1.0 A continuous output supports multiple gate drivers simultaneously; 2.2 A peak rating handles startup surges without dropout. |
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 |
|---|---|---|---|
| LM7815CD2T | Same +15 V output, 1.0 A rating, and D2PAK-3 package; wider output tolerance (±4% vs. ±3%), higher quiescent current (4.2 mA typ), and lower ripple rejection (50 dB) | Less suitable for precision analog rails; acceptable for cost-sensitive industrial controls where tighter regulation is not required | Select LM7815CD2T only if ±4% output tolerance and reduced PSRR are acceptable trade-offs for legacy compatibility or pricing |
| NCV7815BD2TR4 | Automotive-grade variant with AEC-Q100 qualification, identical electrical specs, and same D2PAK-3 package; enhanced process control and PPAP documentation support | Mandatory for automotive OEM designs; unnecessary overhead for commercial/industrial applications without automotive compliance needs | Choose NCV7815BD2TR4 exclusively for automotive production programs requiring PPAP and zero-defect traceability |
Compared with LM7815CD2T, MC7815BD2TR4 offers tighter output tolerance and superior ripple rejection for noise-sensitive analog use cases; versus NCV7815BD2TR4, it provides identical performance at lower cost and without automotive certification overhead for non-automotive deployments.
Availability
MC7815BD2TR4 is available at Aetrix Electronics and suitable for industrial PLC power supplies, automotive body control modules, test equipment signal conditioning, and industrial motor drive auxiliary supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for MC7815BD2TR4 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT markets.
The MC7800 series - including MC7815BD2TR4 - was designed as a rugged, drop-in fixed-voltage linear regulator family for local board-level regulation in harsh environments, emphasizing reliability, integrated protection, and ease of use without external compensation.
FAQ
What is the maximum input voltage for MC7815BD2TR4?
The absolute maximum input voltage for MC7815BD2TR4 is 35 V DC, per the datasheet's Maximum Ratings table. However, for reliable continuous operation, the recommended input range is 17.9 V to 30 V DC - ensuring sufficient headroom for dropout (2.0 V) while staying within safe power dissipation limits. Exceeding 35 V risks permanent damage even with thermal protection active.
Does MC7815BD2TR4 require an input bypass capacitor?
Yes, MC7815BD2TR4 requires an input bypass capacitor - typically ≥0.33 µF tantalum or ceramic - mounted with minimal lead length directly across Pins 1 and 2. This stabilizes operation under fast load transients and suppresses high-frequency noise from upstream sources. Omitting it may cause oscillation or poor transient response, especially with long input traces or high-impedance supplies.
Can MC7815BD2TR4 be used in adjustable configurations?
Yes, MC7815BD2TR4 can be configured as an adjustable regulator using external resistors and a Zener diode, as shown in Figure 10 of the datasheet. However, doing so forfeits its factory-trimmed ±3% accuracy and introduces additional error sources. For adjustable applications, dedicated LDOs like the LM317 are preferred due to better regulation and flexibility.
What is the thermal resistance from junction to case (RθJC) for MC7815BD2TR4?
The thermal resistance from junction to case (RθJC) for MC7815BD2TR4 is 5.0°C/W, as specified in the Maximum Ratings table. This value assumes direct metal-to-metal contact between the D2PAK-3 tab (Pin 2) and a properly sized copper heatsink area on the PCB. Accurate thermal modeling requires combining this with PCB thermal resistance to ambient (RθCA) to estimate actual junction temperature.
Is MC7815BD2TR4 RoHS-compliant and lead-free?
Yes, MC7815BD2TR4 is a Pb-free device, as explicitly stated in the datasheet's Features section ("These are Pb−Free Devices"). It complies with RoHS Directive 2011/65/EU and meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for surface-mount assembly. The "D2TR4" suffix confirms tape-and-reel packaging compatible with automated SMT lines.
MC7815BD2TR4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 35V
- Voltage - Output (Min/Fixed):
- 15V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2V @ 1A (Typ)
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 8 mA
- Current - Supply (Max):
- -
- PSRR:
- 80dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-3
MC7815BD2TR4 FAQ
1.How can I place an order for MC7815BD2TR4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC7815BD2TR4 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 MC7815BD2TR4 reliable?
The price and inventory of MC7815BD2TR4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC7815BD2TR4 is usually 5 days.
3.What payment methods are accepted for MC7815BD2TR4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC7815BD2TR4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC7815BD2TR4?
MC7815BD2TR4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC7815BD2TR4 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 MC7815BD2TR4?
For technical support, including MC7815BD2TR4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC7815BD2TR4 requirements.
6.How does Aetrix verify that MC7815BD2TR4 is sourced from the original manufacturer or authorized distributors?
All MC7815BD2TR4 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 MC7815BD2TR4 meets industry standards.
7.What is the process for return or replacement of MC7815BD2TR4?
All MC7815BD2TR4 units undergo pre-shipment inspection (PSI). If there is an issue with MC7815BD2TR4, 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 MC7815BD2TR4 part is unused and in its original packaging.
Return procedure for MC7815BD2TR4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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