PIC24FJ256GB108T-I/PT Equivalent & Substitute Parts

Part Overview

The PIC24FJ256GB108T-I/PT is a 16-bit microcontroller from Microchip Technology's PIC® 24F series, designed for embedded applications requiring moderate processing capability and integrated connectivity. This device features 256KB of FLASH program memory, 16KB of RAM, and operates at 32MHz with a supply voltage range of 2V to 3.6V. The part is actively produced and widely used in industrial control, consumer electronics, and IoT applications. Finding equivalent or substitute parts becomes necessary when managing supply chain constraints, optimizing procurement costs, or addressing specific packaging requirements while maintaining functional compatibility.

Key Parameters

Parameter	Value
Core Processor	PIC
Core Size	16-Bit
Speed	32MHz
Program Memory Size	256KB (85.5K x 24)
Program Memory Type	FLASH
RAM Size	16K x 8
Voltage - Supply (Vcc/Vdd)	2V ~ 3.6V
Data Converters	A/D 16x10b
Number of I/O	65
Connectivity	I2C, SPI, UART/USART, USB OTG
Peripherals	Brown-out Detect/Reset, LVD, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	80-TQFP (12x12)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the PIC24FJ256GB108T-I/PT is determined by strict equivalence across the following critical parameters:

Core Architecture: PIC 16-Bit processor
Memory Configuration: 256KB FLASH program memory and 16KB RAM
Operating Frequency: 32MHz
Supply Voltage Range: 2V ~ 3.6V
Package Type: 80-TQFP (12x12) surface mount
Connectivity & Peripherals: I2C, SPI, UART/USART, USB OTG, Brown-out Detect/Reset, LVD, POR, PWM, WDT
I/O Count: 65 pins
Data Conversion: A/D 16x10b

The primary distinction between the main part and its substitute lies in packaging format: the main part is supplied in Cut Tape (CT) & Digi-Reel® format, while the substitute is available in Tray packaging. Both parts share identical electrical specifications, thermal characteristics, and compliance certifications.

Parameter Comparison

Parameter	PIC24FJ256GB108T-I/PT (Main)	PIC24FJ256GB108-I/PT (Substitute)
Manufacturer	Microchip Technology	Microchip Technology
Series	PIC® 24F	PIC® 24F
Core Processor	PIC	PIC
Core Size	16-Bit	16-Bit
Speed	32MHz	32MHz
Program Memory Size	256KB (85.5K x 24)	256KB (85.5K x 24)
Program Memory Type	FLASH	FLASH
RAM Size	16K x 8	16K x 8
Voltage - Supply (Vcc/Vdd)	2V ~ 3.6V	2V ~ 3.6V
Data Converters	A/D 16x10b	A/D 16x10b
Number of I/O	65	65
Connectivity	I2C, SPI, UART/USART, USB OTG	I2C, SPI, UART/USART, USB OTG
Peripherals	Brown-out Detect/Reset, LVD, POR, PWM, WDT	Brown-out Detect/Reset, LVD, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)	-40°C ~ 85°C (TA)
Package / Case	80-TQFP (12x12)	80-TQFP (12x12)
Mounting Type	Surface Mount	Surface Mount
Packaging Format	Cut Tape (CT) & Digi-Reel®	Tray
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)
Product Status	Active	Active

Engineering Selection Recommendations

Both the PIC24FJ256GB108T-I/PT and PIC24FJ256GB108-I/PT are functionally equivalent devices with identical electrical and thermal specifications. Selection between these parts should be based on packaging and supply chain requirements:

Cut Tape & Digi-Reel® Format (Main Part): Suitable for automated pick-and-place assembly operations and high-volume production environments where tape-and-reel packaging is standard.
Tray Format (Substitute Part): Appropriate for manual assembly, lower-volume production runs, or applications where tray packaging aligns with existing handling procedures.

Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring equivalent reliability and environmental performance. Product status is Active for both variants, confirming ongoing manufacturer support and availability.

Frequently Asked Questions (FAQ)

Q: Are the PIC24FJ256GB108T-I/PT and PIC24FJ256GB108-I/PT electrically identical?

A: Yes. Both parts share identical core specifications including processor architecture, memory configuration, operating frequency, supply voltage range, I/O count, connectivity options, and peripheral features. Electrical performance and functionality are equivalent.

Q: What is the only difference between these two parts?

A: The packaging format differs. The main part (PIC24FJ256GB108T-I/PT) is supplied in Cut Tape & Digi-Reel® format, while the substitute (PIC24FJ256GB108-I/PT) is supplied in Tray packaging. Both use the same 80-TQFP (12x12) surface mount package.

Q: Can I use the Tray-packaged part in place of the Cut Tape version?

A: Yes, provided your assembly process accommodates tray-format components. The electrical and mechanical specifications are identical, making them functionally interchangeable at the component level.

Q: Do both parts have the same compliance certifications?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 3, 168 Hours). Thermal and environmental performance characteristics are equivalent.

Q: Which part should I select for high-volume automated assembly?

A: The Cut Tape & Digi-Reel® format (PIC24FJ256GB108T-I/PT) is optimized for automated pick-and-place equipment commonly used in high-volume production environments.

Q: Are there any differences in pin configuration or footprint?

A: No. Both parts use the identical 80-TQFP (12x12) package with 65 I/O pins. PCB footprints and pin assignments are identical.

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