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NJM7815FA
NJM7815FA
| Part Number | NJM7815FA |
|---|---|
| Manufacturer | Nisshinbo Micro Devices (Formerly NJR / New Japan Radio) |
| Category | Integrated Circuits (ICs) > PMIC – Voltage Regulators – Linear |
| Description | Monolithic 3-terminal positive linear voltage regulator delivering a fixed 15V output and up to 1.5A output current, housed in an isolated TO-220F package with internal thermal overload and short-circuit protection. |
| Stock Status | In Stock |
| Origin | Original Factory Authentic Stock |
Product Overview
The NJM7815FA is a 3-terminal positive fixed linear regulator from Nisshinbo Micro Devices. It outputs stable low-noise 15V DC and supports up to 1.5A continuous output current under sufficient heat dissipation.
Equipped with thermal shutdown, short-circuit current limit and SOA protection, it avoids permanent damage during abnormal operating conditions. The isolated TO-220F full-pack tab removes extra mica insulating washers during heatsink mounting to simplify assembly.
This IC is widely used for op-amp power rails, industrial controllers, analog signal circuits, audio equipment and on-board fixed voltage regulation modules.
Core Advantages
Fully Isolated TO-220F Package
The fully molded plastic body insulates the internal die tab from external heatsinks, removing the need for separate insulating spacers and speeding up mass assembly processes.
Multi-Layer Built-In Protection Circuits
Integrated thermal shutdown, short-circuit current limit and SOA protection, enabling the chip to automatically respond to overcurrent faults without device failure.
High Ripple Rejection & Low Output Noise
Features excellent power supply ripple rejection and low noise output, providing clean reference-grade power for precision analog circuits and audio amplifiers.
Universal 78xx Standard Pinout Compatibility
Follows unified Input-Ground-Output pin definition of the 78xx series, allowing direct drop-in replacement for legacy linear regulator circuits.
Key Specifications
| Brand | Nisshinbo Micro Devices / NJR |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free Matte Tin Terminal Pins |
| EDA/CAD Model | 3D Model & PCB Footprint Available upon request |
| Warranty | 1-Year Standard Factory Warranty |
| Package / Case | TO-220F |
| Mounting Type | Through-Hole Technology (THT) |
| Surface Marking / Silkscreen | 7815A Marking |
| Output Voltage (VOUT) | 15 V Fixed Positive Output |
| Input Voltage (VIN) Limit | 35 V Absolute Maximum Input Voltage |
| Output Current (IOUT) Capacity | 1.5 A Maximum Capability (Restricted by operating junction temperature) |
| Dropout Voltage (Vd) | 2.0 V Typical (Minimum input-output voltage differential) |
| Line Regulation | 11 mV Typical (at VIN = 17.5V to 30V) |
| Load Regulation | 15 mV Typical (at IOUT = 5mA to 1.5A) |
| Power Supply Ripple Rejection (PSRR) | 60 dB Typical (at f = 120Hz, VIN = 23V) |
| Operating Temperature Range | -40°C to +85°C wide industrial operating temperature range |
| Quiescent Current (IQ) | 5 mA Typical (No-load supply current) |
| Output Noise Voltage | 40 µV Typical (10Hz ~ 10kHz bandwidth) |
| Thermal Resistance (RθJA) | 50 °C/W (TO-220F without heatsink) |
| Thermal Resistance (RθJC) | 3.0 °C/W (Junction to tab) |
| Short-Circuit Protection Current Limit | 2.5 A Typical Current Clamp |
| Storage Temperature Range (TSTG) | -55°C ~ +125°C |
Typical Applications
- High-Fidelity Audio Preamplifiers, Graphic Equalizers, and Studio Mixer Power Rails
- Industrial PLC Modules, Process Controllers, and Factory Automation Sensor Interfaces
- On-Board Localized Linear Voltage Regulation for Microcontroller and Logic Arrays
- Test and Measurement Instrumentation Power Subsystems requiring low electromagnetic interference
- Commercial Appliances, Home Automation Control Units, and Laboratory DC Power Supplies
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: Is your currently available stock of the NJM7815FA 100% genuine and original?
A: Yes, we guarantee that all NJM7815FA units in our warehouse are 100% brand-new, original factory stock from Nisshinbo Micro Devices (formerly NJR). Each batch undergoes strict inventory tracking protocols and is stored in standardized ESD-safe environments prior to packaging.
Q2: Why does this part number carry the name Nisshinbo Micro Devices instead of New Japan Radio (NJR)?
A: New Japan Radio (NJR) merged with Ricoh Electronic Devices to form Nisshinbo Micro Devices. Legacy batches may print NJR logo, while core die specifications, electrical parameters and pinout remain fully identical.
Q3: Do I need to buy thermal grease or mica washers when installing the TO-220F package configuration?
A: The FA suffix stands for fully isolated TO-220F packaging, the molded plastic body provides native electrical isolation so mica insulating washers are not required. A thin layer of thermal paste is still recommended to reduce thermal contact resistance between tab and heatsink.
Q4: What is the recommended input voltage window to ensure optimal, continuous 15V output regulation?
A: To guarantee stable 15V output and overcome the 2V dropout voltage, input DC voltage should be maintained between 17.5V ~ 30V. Lower input voltage reduces power dissipation and extends device service life.
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