TMK107B7105MA-T Equivalent & Substitute Parts

Part Overview

The TMK107B7105MA-T is a 1 µF ±20% 25V ceramic capacitor with X7R temperature coefficient in 0603 (1608 Metric) surface mount package manufactured by Taiyo Yuden. This part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. The part is designed for SMPS filtering applications and carries ROHS3 compliance with MSL 1 (Unlimited) moisture sensitivity rating.

Due to its obsolescence status, equivalent and substitute parts from active product lines are necessary for ongoing production support, design updates, and new applications requiring the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Capacitance	1 µF
Tolerance	±20%
Voltage - Rated	25V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C ~ 125°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Size / Dimension	0.063" L x 0.031" W (1.60mm x 0.80mm)
Thickness (Max)	0.035" (0.90mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the TMK107B7105MA-T are classified into two categories based on their relationship to the main part specifications:

Upgrade Substitutes are parts with identical electrical parameters (1 µF, ±20%, 25V, X7R) and identical mechanical package (0603/1608 Metric) but with enhanced product status (Active vs. Not For New Designs) or additional certifications. These parts are direct replacements with no design modifications required.

Parametric Equivalents are parts with identical electrical parameters (1 µF, ±20%, 25V, X7R) and identical mechanical package (0603/1608 Metric) but with different series designations, product status, or application classifications. These parts meet all functional requirements for substitution.

The critical parameters determining substitution eligibility are:

Capacitance: 1 µF (exact match required)
Tolerance: ±20% (exact match required)
Voltage Rating: 25V (exact match required)
Temperature Coefficient: X7R (exact match required)
Package: 0603 (1608 Metric) (exact match required)
Operating Temperature: -55°C ~ 125°C (exact match required)
Mounting Type: Surface Mount, MLCC (exact match required)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Capacitance	Tolerance	Voltage	Temp Coeff	Operating Temp	Package	Size (mm)	Thickness (mm)	Product Status	MSL	RoHS
TMK107B7105MA-T	Taiyo Yuden	M	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Not For New Designs	1	ROHS3
MAAST168SB7105MTCA01	Taiyo Yuden	MAAS	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
MCAST168AB7105MTNA01	Taiyo Yuden	MCAS	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
MCJCT168CB7105MRPA01	Taiyo Yuden	MCJC	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
UMK107AB7105MA-T	Taiyo Yuden	M	1 µF	±20%	50V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.95	Not For New Designs	1	ROHS3
MBAST168AB7105MTNA01	Taiyo Yuden	MBAS	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
MBJCT168CB7105MRPA01	Taiyo Yuden	MBJC	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
MCAST168AB7105MTNA1J	Taiyo Yuden	MCAS	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
MCJCT168CB7105MRPA1J	Taiyo Yuden	MCJC	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
MLAST168SB7105MTNA01	Taiyo Yuden	MLAS	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3
MMAST168AB7105MTNA01	Taiyo Yuden	MMAS	1 µF	±20%	25V	X7R	-55°C ~ 125°C	0603	1.60 x 0.80	0.90	Active	1	ROHS3

Engineering Selection Recommendations

For Automotive Applications with AEC-Q200 Compliance: Select MAAST168SB7105MTCA01 or MCAST168AB7105MTNA01. Both parts carry Active product status and AEC-Q200 certification, making them suitable for automotive-grade designs requiring qualified component traceability.

For Boardflex-Sensitive Applications: Select MCJCT168CB7105MRPA01 or MCJCT168CB7105MRPA1J. These parts feature Soft Termination technology and are designated for boardflex-sensitive applications. MCJCT168CB7105MRPA01 carries AEC-Q200 certification for automotive use, while MCJCT168CB7105MRPA1J is rated for general boardflex applications.

For Medical Applications (Non-Critical): Select MLAST168SB7105MTNA01 or MMAST168AB7105MTNA01. Both parts carry Active product status and are designated for medical, non-critical applications.

For General Purpose Applications: Select MBAST168AB7105MTNA01, MCAST168AB7105MTNA1J, or MCAST168AB7105MTNA01. These parts carry Active product status and are suitable for general-purpose applications without specialized certifications or features.

Voltage Upgrade Consideration: UMK107AB7105MA-T provides a 50V rated alternative with identical capacitance, tolerance, and package. This part is suitable for applications requiring higher voltage margin but carries "Not For New Designs" status. Use only when 50V rating is functionally required and no 25V alternative meets design constraints.

All substitute parts maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and identical operating temperature range (-55°C ~ 125°C) as the main part.

Frequently Asked Questions (FAQ)

Q: Can MAAST168SB7105MTCA01 be used as a direct replacement for TMK107B7105MA-T?

A: Yes. MAAST168SB7105MTCA01 is electrically and mechanically identical to TMK107B7105MA-T with capacitance of 1 µF, tolerance of ±20%, voltage rating of 25V, X7R temperature coefficient, and 0603 package. The primary difference is product status (Active vs. Not For New Designs) and AEC-Q200 automotive certification. No design modifications are required.

Q: What is the difference between MCJCT168CB7105MRPA01 and MBJCT168CB7105MRPA01?

A: Both parts have identical electrical specifications (1 µF, ±20%, 25V, X7R) and package (0603). MCJCT168CB7105MRPA01 carries AEC-Q200 certification and is designated for automotive and boardflex-sensitive applications. MBJCT168CB7105MRPA01 is designated for boardflex-sensitive applications without automotive certification. Both feature Soft Termination technology.

Q: Why does UMK107AB7105MA-T have a different thickness specification?

A: UMK107AB7105MA-T has a maximum thickness of 0.95mm compared to 0.90mm for the main part. This thickness increase is associated with the higher 50V voltage rating. Verify PCB assembly clearance before substitution if space constraints exist.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance status, matching the main part TMK107B7105MA-T.

Q: What does "Soft Termination" mean in MCJC and MBJC series parts?

A: Soft Termination is a feature in MCJC and MBJC series parts designed to reduce mechanical stress on component terminations during board flexing. This feature is beneficial for applications subject to board bending or vibration stress. Parts without this designation (MBAS, MCAS, MLAS, MMAS series) do not include this feature.

Q: Can I substitute a part designated for medical applications into a general-purpose design?

A: Yes. MLAST168SB7105MTNA01 and MMAST168AB7105MTNA01 are electrically and mechanically identical to general-purpose alternatives. Medical designation indicates the part meets additional traceability and quality requirements but does not restrict use in non-medical applications.

Q: What is the inventory status of these substitute parts?

A: Inventory quantities vary by part number. MCJCT168CB7105MRPA01 has 908 units in stock, MBJCT168CB7105MRPA01 has 1078 units, MLAST168SB7105MTNA01 has 1096 units, and MMAST168AB7105MTNA01 has 930 units. Verify current availability with supplier before design commitment.

Q: Is the main part TMK107B7105MA-T still available for purchase?

A: TMK107B7105MA-T carries "Not For New Designs" status with 80200 units in stock. While available, this status indicates the manufacturer has superseded this part. For new designs, select an Active-status substitute from the list provided.

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