EMK107BJ105MA-T Equivalent & Substitute Parts

Part Overview

The EMK107BJ105MA-T is a 1 µF ±20% 16V ceramic capacitor in X5R temperature coefficient, manufactured by Taiyo Yuden in 0603 (1608 Metric) surface mount package. This component is designated as Not For New Designs, indicating it has been superseded in the manufacturer's product line. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, suitable for SMPS filtering applications.

Identification of equivalent and substitute parts is necessary due to the product's obsolescence status and potential supply constraints. Alternative components with identical or enhanced electrical characteristics provide design flexibility and ensure long-term availability for production and maintenance applications.

Key Parameters

Parameter	Value	Specification Basis
Capacitance	1 µF	Core electrical requirement
Voltage Rating	16V	Minimum operating voltage
Tolerance	±20%	Acceptable capacitance deviation
Temperature Coefficient	X5R	Temperature stability requirement
Package / Case	0603 (1608 Metric)	Physical form factor
Operating Temperature Range	-55°C ~ 85°C	Environmental operating limits
Mounting Type	Surface Mount, MLCC	Assembly compatibility
RoHS Status	ROHS3 Compliant	Regulatory compliance
MSL Rating	1 (Unlimited)	Moisture handling capability

Substitute Part Grouping Explanation

Substitute parts are classified into three categories based on electrical and mechanical compatibility with the EMK107BJ105MA-T:

Upgrade Substitutes (Taiyo Yuden Series M): Parts EMK107BJ105KA-T, EMK107BJ105KK-T, GMK107BJ105KA-T, TMK107BJ105KA-T, and UMK107BJ105KA-T maintain identical capacitance (1 µF), temperature coefficient (X5R), package (0603), and operating temperature range. These parts differ in tolerance (±10% versus ±20%) and/or voltage rating (25V, 35V, or 50V versus 16V). Tighter tolerance and higher voltage ratings represent functional improvements suitable for direct substitution in applications where the original 16V rating is not a limiting constraint.

Similar Substitute (Different Package): Part EMK105BJ105MV-F shares identical electrical specifications (1 µF, ±20%, 16V, X5R) but uses 0402 (1005 Metric) package instead of 0603. This part is applicable only when PCB layout accommodates the smaller form factor.

Direct Equivalents (Alternative Manufacturers): Parts C0603C105M4PAC7867 (KEMET), C1608X5R1C105M080AA (TDK Corporation), CL10A105MO8NNNC (Samsung Electro-Mechanics), and KGM15BR51C105MM (KYOCERA AVX) provide identical electrical and mechanical specifications to the main part: 1 µF, ±20%, 16V, X5R, 0603 package, -55°C ~ 85°C operating range, ROHS3 compliant, and MSL 1 rating. These components are direct functional equivalents from different manufacturers.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage Rating	Temperature Coefficient	Package	Thickness (Max)	Product Status	Inventory
EMK107BJ105MA-T	Taiyo Yuden	1 µF	±20%	16V	X5R	0603	0.035"	Not For New Designs	166697 Pcs
EMK107BJ105KA-T	Taiyo Yuden	1 µF	±10%	16V	X5R	0603	0.035"	Not For New Designs	433200 Pcs
EMK107BJ105KK-T	Taiyo Yuden	1 µF	±10%	16V	X5R	0603	0.020"	Not For New Designs	1602 Pcs
GMK107BJ105KA-T	Taiyo Yuden	1 µF	±10%	35V	X5R	0603	0.035"	Not For New Designs	81100 Pcs
TMK107BJ105KA-T	Taiyo Yuden	1 µF	±10%	25V	X5R	0603	0.035"	Not For New Designs	105300 Pcs
UMK107BJ105KA-T	Taiyo Yuden	1 µF	±10%	50V	X5R	0603	0.035"	Not For New Designs	42700 Pcs
EMK105BJ105MV-F	Taiyo Yuden	1 µF	±20%	16V	X5R	0402	0.022"	Not For New Designs	320163 Pcs
C0603C105M4PAC7867	KEMET	1 µF	±20%	16V	X5R	0603	0.035"	Active	11570 Pcs
C1608X5R1C105M080AA	TDK Corporation	1 µF	±20%	16V	X5R	0603	0.035"	Not For New Designs	33013 Pcs
CL10A105MO8NNNC	Samsung Electro-Mechanics	1 µF	±20%	16V	X5R	0603	0.035"	Active	1070 Pcs
KGM15BR51C105MM	KYOCERA AVX	1 µF	±20%	16V	X5R	0603	0.037"	Active	27023 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

Select from KEMET C0603C105M4PAC7867, TDK Corporation C1608X5R1C105M080AA, Samsung Electro-Mechanics CL10A105MO8NNNC, or KYOCERA AVX KGM15BR51C105MM when exact electrical and mechanical equivalence is required. These parts maintain 1 µF capacitance, ±20% tolerance, 16V rating, X5R temperature coefficient, and 0603 package dimensions. KEMET and Samsung Electro-Mechanics parts carry Active product status, indicating ongoing manufacturer support and availability. All four parts are ROHS3 compliant with MSL 1 rating.

For Improved Tolerance (Taiyo Yuden Upgrade):

EMK107BJ105KA-T provides ±10% tolerance with identical 16V rating and 0603 package, suitable when tighter capacitance tolerance improves circuit performance. This part maintains Not For New Designs status but offers higher inventory availability (433200 Pcs).

For Higher Voltage Rating (Taiyo Yuden Upgrade):

TMK107BJ105KA-T (25V), GMK107BJ105KA-T (35V), or UMK107BJ105KA-T (50V) are applicable when circuit design permits higher voltage-rated components. These parts maintain 1 µF capacitance, ±10% tolerance, X5R coefficient, and 0603 package. Higher voltage ratings provide additional safety margin in applications subject to voltage transients or design margin requirements.

For Reduced Height (Taiyo Yuden Upgrade):

EMK107BJ105KK-T offers 0.020" maximum thickness compared to 0.035" for the main part, applicable in space-constrained PCB designs. This part maintains 1 µF, ±10% tolerance, 16V rating, and 0603 package footprint.

For Smaller Package (Taiyo Yuden Alternative):

EMK105BJ105MV-F provides identical electrical specifications in 0402 (1005 Metric) package, suitable only when PCB layout accommodates the smaller form factor (0.039" L x 0.020" W versus 0.063" L x 0.031" W).

Frequently Asked Questions (FAQ)

Q: Can EMK107BJ105KA-T replace EMK107BJ105MA-T directly?

A: Yes. EMK107BJ105KA-T is a direct upgrade substitute. Both parts share identical capacitance (1 µF), voltage rating (16V), temperature coefficient (X5R), package (0603), and operating temperature range (-55°C ~ 85°C). The primary difference is improved tolerance (±10% versus ±20%), which represents a functional enhancement. No circuit modifications are required.

Q: What is the difference between EMK107BJ105KA-T and GMK107BJ105KA-T?

A: Both parts are Taiyo Yuden Series M components with 1 µF capacitance, ±10% tolerance, X5R temperature coefficient, and 0603 package. The key difference is voltage rating: EMK107BJ105KA-T is rated 16V, while GMK107BJ105KA-T is rated 35V. The higher voltage rating in GMK107BJ105KA-T provides additional design margin but is not required if the circuit operates at 16V or below.

Q: Can I use a 0402 package part (EMK105BJ105MV-F) instead of 0603?

A: Only if PCB layout accommodates the smaller form factor. EMK105BJ105MV-F maintains identical electrical specifications (1 µF, ±20%, 16V, X5R) but uses 0402 package (0.039" L x 0.020" W) instead of 0603 (0.063" L x 0.031" W). Footprint compatibility must be verified before substitution.

Q: Are KEMET, TDK, Samsung, and KYOCERA AVX parts truly equivalent to the Taiyo Yuden original?

A: Yes. C0603C105M4PAC7867 (KEMET), C1608X5R1C105M080AA (TDK), CL10A105MO8NNNC (Samsung), and KGM15BR51C105MM (KYOCERA AVX) are direct equivalents. All share identical capacitance (1 µF), tolerance (±20%), voltage rating (16V), temperature coefficient (X5R), package (0603), operating temperature range (-55°C ~ 85°C), RoHS compliance, and MSL rating. These parts are functionally interchangeable from different manufacturers.

Q: Why is the main part marked "Not For New Designs"?

A: This designation indicates the EMK107BJ105MA-T has been superseded in the manufacturer's product line. Taiyo Yuden recommends using upgraded alternatives such as EMK107BJ105KA-T for new designs. However, the part remains available for existing production and maintenance applications.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 rating indicates the component has unlimited shelf life and does not require special moisture-controlled storage or handling. This simplifies inventory management and reduces risk of moisture-induced failures during storage and assembly.

Q: Can I substitute a higher voltage-rated part (25V, 35V, or 50V) in a 16V circuit?

A: Yes. Higher voltage-rated capacitors are functionally compatible in lower voltage applications. TMK107BJ105KA-T (25V), GMK107BJ105KA-T (35V), and UMK107BJ105KA-T (50V) can replace the 16V-rated EMK107BJ105MA-T. The higher voltage rating provides additional safety margin and does not degrade circuit performance.

Q: What is the difference between ±20% and ±10% tolerance?

A: Tolerance specifies the acceptable deviation from the nominal 1 µF capacitance value. ±20% tolerance allows capacitance between 0.8 µF and 1.2 µF. ±10% tolerance restricts capacitance between 0.9 µF and 1.1 µF. Tighter tolerance (±10%) provides more precise capacitance values, beneficial in applications requiring strict circuit performance specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, meeting regulatory requirements for hazardous substance restrictions. This ensures compatibility with modern manufacturing and environmental standards.

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