TMK105BJ103MP-F Equivalent & Substitute Parts

Part Overview

The TMK105BJ103MP-F is a 10000 pF ceramic capacitor rated for 25V with X5R temperature coefficient in 0402 (1005 Metric) surface mount package. This component is classified as "Not For New Designs" and is used in SMPS filtering applications. Due to its discontinued design status, equivalent and substitute parts with improved specifications or active product status are available to support ongoing production and new design requirements.

Key Parameters

Parameter	Value
Capacitance	10000 pF
Tolerance	±20%
Voltage Rating	25V
Temperature Coefficient	X5R
Operating Temperature Range	-55°C ~ 85°C
Package / Case	0402 (1005 Metric)
Mounting Type	Surface Mount, MLCC
Thickness (Max)	0.013" (0.33mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TMK105BJ103MP-F is determined by the following criteria:

Parametric Equivalents maintain identical electrical specifications: 10000 pF capacitance, ±20% tolerance, 25V voltage rating, X5R temperature coefficient, and -55°C ~ 85°C operating temperature range. These parts differ only in series designation and product status. Parametric equivalents include MLAST1L3YB5103MFNA01 and MSAST1L3YB5103MFNA01, both with Active product status.

Upgrade Substitutes provide enhanced voltage ratings or improved tolerance while maintaining the same capacitance value and package footprint. These parts operate at higher voltage ratings (50V) or tighter tolerances (±10%), making them suitable for applications requiring additional design margin. Upgrade substitutes include UMK105B7103MV-F (50V, X7R) and UMK105BJ103KV-F (50V, X5R, ±10%).

All substitute parts maintain 0402 (1005 Metric) package compatibility, surface mount MLCC mounting type, MSL 1 rating, and ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Operating Temperature	Package	Thickness (Max)	Product Status	Inventory (Pcs)
TMK105BJ103MP-F	Taiyo Yuden	10000 pF	±20%	25V	X5R	-55°C ~ 85°C	0402 (1005 Metric)	0.013" (0.33mm)	Not For New Designs	5890
UMK105B7103MV-F	Taiyo Yuden	10000 pF	±20%	50V	X7R	-55°C ~ 125°C	0402 (1005 Metric)	0.026" (0.65mm)	Not For New Designs	1493
UMK105BJ103KV-F	Taiyo Yuden	10000 pF	±10%	50V	X5R	-55°C ~ 85°C	0402 (1005 Metric)	0.022" (0.55mm)	Not For New Designs	10200
MLAST1L3YB5103MFNA01	Taiyo Yuden	10000 pF	±20%	25V	X5R	-55°C ~ 85°C	0402 (1005 Metric)	0.013" (0.33mm)	Active	923
MSAST1L3YB5103MFNA01	Taiyo Yuden	10000 pF	±20%	25V	X5R	-55°C ~ 85°C	0402 (1005 Metric)	0.013" (0.33mm)	Active	1063

Engineering Selection Recommendations

For Direct Replacement in Existing Designs: MLAST1L3YB5103MFNA01 and MSAST1L3YB5103MFNA01 are parametric equivalents with identical electrical and mechanical specifications. Both parts carry Active product status, ensuring long-term availability and supply chain continuity. These parts are suitable for direct substitution without circuit redesign.

For New Designs with Enhanced Specifications: UMK105BJ103KV-F provides improved tolerance (±10% versus ±20%) and higher voltage rating (50V versus 25V) while maintaining X5R temperature coefficient and identical package footprint. This part supports applications requiring tighter capacitance tolerance and additional voltage margin.

UMK105B7103MV-F offers the highest voltage rating (50V) and extended operating temperature range (-55°C ~ 125°C) with X7R temperature coefficient. The increased thickness (0.026" versus 0.013") must be verified for PCB layout compatibility.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status, ensuring regulatory alignment with the original part.

Frequently Asked Questions (FAQ)

Q: Can MLAST1L3YB5103MFNA01 or MSAST1L3YB5103MFNA01 be used as direct replacements for TMK105BJ103MP-F?

A: Yes. Both parts are parametric equivalents with identical capacitance (10000 pF), tolerance (±20%), voltage rating (25V), temperature coefficient (X5R), operating temperature range (-55°C ~ 85°C), and package dimensions (0402). The primary difference is product status; both are Active, providing improved supply availability compared to the "Not For New Designs" status of TMK105BJ103MP-F.

Q: What is the difference between UMK105B7103MV-F and UMK105BJ103KV-F?

A: UMK105B7103MV-F uses X7R temperature coefficient with ±20% tolerance and operates to -55°C ~ 125°C. UMK105BJ103KV-F uses X5R temperature coefficient with ±10% tolerance and operates to -55°C ~ 85°C. Both are rated for 50V. Selection depends on temperature range requirements and tolerance specifications for the application.

Q: Are there package footprint differences between substitute parts?

A: All parts use 0402 (1005 Metric) package with identical length (0.039") and width (0.020"). Thickness varies: TMK105BJ103MP-F, MLAST1L3YB5103MFNA01, and MSAST1L3YB5103MFNA01 are 0.013" (0.33mm); UMK105BJ103KV-F is 0.022" (0.55mm); UMK105B7103MV-F is 0.026" (0.65mm). Verify PCB clearance for parts with increased thickness.

Q: Which substitute part has the highest inventory availability?

A: UMK105BJ103KV-F has the highest inventory at 10200 pieces, followed by TMK105BJ103MP-F at 5890 pieces. MSAST1L3YB5103MFNA01 has 1063 pieces, MLAST1L3YB5103MFNA01 has 923 pieces, and UMK105B7103MV-F has 1493 pieces.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level and REACH unaffected status.

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