M25P40-VMP6TG TR Equivalent & Substitute Parts

Part Overview

The M25P40-VMP6TG TR is a 4Mbit NOR Flash memory IC manufactured by Micron Technology Inc., featuring SPI interface operation at 50 MHz. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. The part is packaged in 8-VDFPN (6x5) format with Tape & Reel packaging and operates across the industrial temperature range of -40°C to 85°C.

Key Parameters

Parameter	Value
Memory Size	4Mbit
Memory Organization	512K x 8
Memory Interface	SPI
Clock Frequency	50 MHz
Voltage Supply Range	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C (TA)
Package Type	8-VDFN Exposed Pad
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the M25P40-VMP6TG TR are selected based on the following critical parameters that determine functional compatibility:

Core Compatibility Criteria:

Memory Size: 4Mbit (fixed requirement)
Memory Organization: 512K x 8 (fixed requirement)
Memory Interface: SPI (fixed requirement)
Operating Temperature Range: -40°C ~ 85°C (fixed requirement)
Voltage Supply Range: Minimum 2.3V support required
Package Type: 8-pin WDFN/VDFN with exposed pad (mechanical compatibility)
Surface Mount configuration (assembly compatibility)

All substitute parts listed meet these core criteria. Variations in clock frequency, write cycle time, and specific packaging designations (WSON vs. VDFPN) represent performance enhancements or equivalent mechanical footprints that do not compromise functional substitution.

Parameter Comparison

Parameter	M25P40-VMP6TG TR (Main)	MX25L4006EZNI-12G	SST25VF040B-50-4I-QAE	SST25VF040B-50-4I-QAE-T	W25X40CLZPIG
Manufacturer	Micron Technology	Macronix	Microchip Technology	Microchip Technology	Winbond Electronics
Memory Size	4Mbit	4Mbit	4Mbit	4Mbit	4Mbit
Memory Organization	512K x 8	512K x 8	512K x 8	512K x 8	512K x 8
Memory Interface	SPI	SPI	SPI	SPI	SPI
Clock Frequency	50 MHz	86 MHz	50 MHz	50 MHz	104 MHz
Voltage Supply Range	2.3V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.3V ~ 3.6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	8-VDFN Exposed Pad	8-WDFN Exposed Pad	8-WDFN Exposed Pad	8-WDFN Exposed Pad	8-WDFN Exposed Pad
Packaging Format	Tape & Reel (TR)	Tray	Tube	Tape & Reel (TR)	Tube
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

SST25VF040B-50-4I-QAE and SST25VF040B-50-4I-QAE-T (Microchip Technology) provide direct functional equivalence with identical clock frequency (50 MHz) and matching voltage supply range (2.7V ~ 3.6V). Both parts maintain active product status and ROHS3 compliance. The tape & reel variant (SST25VF040B-50-4I-QAE-T) aligns with the original packaging format of the M25P40-VMP6TG TR.

Performance-Enhanced Substitutes:

MX25L4006EZNI-12G (Macronix) and W25X40CLZPIG (Winbond Electronics) offer higher clock frequencies (86 MHz and 104 MHz respectively) while maintaining all core functional parameters. Both are active products with ROHS3 compliance. W25X40CLZPIG supports the lower voltage threshold (2.3V) matching the original part specification.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original M25P40-VMP6TG TR. Moisture sensitivity levels vary (MSL 1 for Microchip variants, MSL 3 for Macronix and Winbond), which may affect storage and handling requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher clock frequency than the original 50 MHz specification?

A: Yes. MX25L4006EZNI-12G (86 MHz) and W25X40CLZPIG (104 MHz) are functionally compatible substitutes. Higher clock frequency capability does not prevent operation at lower frequencies. System design must accommodate the substitute part's electrical characteristics, but backward compatibility is maintained.

Q: What is the difference between 8-VDFN and 8-WDFN packaging?

A: Both designations refer to 8-pin Wafer-level Dual Flat No-lead packages with exposed pad in 6x5mm form factor. The mechanical footprint and pin configuration are equivalent for PCB assembly purposes. VDFN and WDFN are manufacturer-specific nomenclature for the same package class.

Q: Does the voltage supply range difference (2.3V vs. 2.7V minimum) affect substitution?

A: The M25P40-VMP6TG TR operates at 2.3V ~ 3.6V. Substitutes with 2.7V ~ 3.6V range (MX25L4006EZNI-12G and SST25VF040B variants) are compatible if system supply voltage remains above 2.7V. W25X40CLZPIG maintains the 2.3V minimum threshold, providing full voltage range compatibility.

Q: What is the impact of different write cycle times on system design?

A: Write cycle time variations (5ms page write for M25P40 vs. 3ms for MX25L4006 or 10µs for SST25VF040) affect data programming duration but do not prevent functional substitution. System firmware must accommodate the substitute part's write timing specifications.

Q: Are all substitute parts available in Tape & Reel packaging?

A: SST25VF040B-50-4I-QAE-T is available in Tape & Reel format matching the original packaging. MX25L4006EZNI-12G, SST25VF040B-50-4I-QAE, and W25X40CLZPIG are supplied in Tray or Tube formats. Packaging format selection depends on production volume and assembly line requirements.

Q: What is the significance of MSL (Moisture Sensitivity Level) differences?

A: Microchip variants carry MSL 1 (unlimited shelf life), while Macronix and Winbond parts carry MSL 3 (168-hour limit after moisture exposure). MSL 3 components require controlled storage conditions and baking procedures before reflow soldering if moisture absorption occurs.

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