Equivalent & Substitute Parts for 08053C104KA12A

Part Overview

The 08053C104KA12A is a 0.1 µF ±10% 25V ceramic capacitor in 0805 (2012 Metric) package with X7R temperature coefficient, manufactured by KYOCERA AVX. This part is discontinued at DiGi Electronics. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts maintain the same capacitance, package, and temperature coefficient while offering improved compliance status, enhanced features, or higher voltage ratings.

Key Parameters

Parameter	Value
Capacitance	0.1 µF
Tolerance	±10%
Voltage - Rated	25V
Temperature Coefficient	X7R
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Operating Temperature	-55°C ~ 125°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 08053C104KA12A is determined by the following critical parameters:

Primary Substitution Criteria:

Capacitance: 0.1 µF (exact match required)
Package: 0805 (2012 Metric) (exact match required)
Temperature Coefficient: X7R (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Mounting Type: Surface Mount, MLCC (exact match required)

Secondary Substitution Parameters:

Tolerance: ±10% (primary specification) or ±5% (tighter tolerance acceptable)
Voltage Rating: 25V (minimum) or higher (100V, 50V acceptable for voltage derating applications)
RoHS Status: Non-compliant (original) to ROHS3 Compliant (preferred upgrade)
Product Status: Discontinued (original) to Active (required for new sourcing)

Substitute parts are grouped by voltage rating and tolerance, as these parameters determine electrical performance and application suitability while maintaining mechanical and thermal compatibility.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Package	Temperature Coefficient	Product Status	RoHS Status	Inventory
08053C104KA12A	KYOCERA AVX	0.1 µF	±10%	25V	0805	X7R	Discontinued	Non-compliant	910 Pcs
KAS21KR71E104KU	KYOCERA AVX	0.1 µF	±10%	25V	0805	X7R	Active	ROHS3 Compliant	8513 Pcs
KGM21NR71E104JT	KYOCERA AVX	0.1 µF	±5%	25V	0805	X7R	Active	ROHS3 Compliant	111083 Pcs
KGM21NR71E104KM	KYOCERA AVX	0.1 µF	±10%	25V	0805	X7R	Active	ROHS3 Compliant	49321 Pcs
KGM21NR71E104KT	KYOCERA AVX	0.1 µF	±10%	25V	0805	X7R	Active	ROHS3 Compliant	518460 Pcs
KGM21NR71H104JM	KYOCERA AVX	0.1 µF	±5%	50V	0805	X7R	Active	ROHS3 Compliant	67008 Pcs
KGM21NR71H104JT	KYOCERA AVX	0.1 µF	±5%	50V	0805	X7R	Active	ROHS3 Compliant	143911 Pcs
KGM21NR71H104KT	KYOCERA AVX	0.1 µF	±10%	50V	0805	X7R	Active	ROHS3 Compliant	1555245 Pcs
KGM21AR72A104JU	KYOCERA AVX	0.1 µF	±5%	100V	0805	X7R	Active	ROHS3 Compliant	57302 Pcs
KGM21AR72A104KU	KYOCERA AVX	0.1 µF	±10%	100V	0805	X7R	Active	ROHS3 Compliant	360970 Pcs
LD055C104JAB2A	KYOCERA AVX	0.1 µF	±5%	50V	0805	X7R	Active	Non-compliant	27298 Pcs

Engineering Selection Recommendations

Direct Replacement (Same Voltage, Same Tolerance): KAS21KR71E104KU, KGM21NR71E104KM, and KGM21NR71E104KT are direct functional replacements for 08053C104KA12A. All three maintain 0.1 µF capacitance, ±10% tolerance, and 25V rating in 0805 package. All are ROHS3 compliant and active products with significantly higher inventory availability. KGM21NR71E104KT offers the highest stock level (518460 Pcs). KAS21KR71E104KU includes soft termination feature (FLEXITERM™ Flexisafe series) and AEC-Q200 rating for automotive applications.

Tighter Tolerance Upgrade (Same Voltage, ±5% Tolerance): KGM21NR71E104JT provides ±5% tolerance at 25V rating, offering improved capacitance accuracy while maintaining all other electrical and mechanical specifications. This part is ROHS3 compliant and active with 111083 Pcs inventory.

Higher Voltage Rating (Voltage Derating): KGM21NR71H104JT, KGM21NR71H104KT (50V rating), and KGM21AR72A104JU, KGM21AR72A104KU (100V rating) are suitable for applications where voltage derating is acceptable. Higher voltage ratings provide additional safety margin in circuits operating below the rated voltage. All are ROHS3 compliant and active. KGM21AR72A104KU (100V, ±10%) offers the highest inventory (360970 Pcs).

Legacy Compliance Alternative: LD055C104JAB2A maintains 50V rating and ±5% tolerance but retains RoHS non-compliant status. This part is suitable only for applications where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can KGM21NR71E104KT replace 08053C104KA12A directly? A: Yes. KGM21NR71E104KT is a direct replacement. Both parts have 0.1 µF capacitance, ±10% tolerance, 25V rating, X7R temperature coefficient, and 0805 package. KGM21NR71E104KT is active and ROHS3 compliant, addressing the discontinued status of the original part.

Q: What is the difference between KGM21NR71E104KT and KGM21NR71E104JT? A: Both parts are 0.1 µF, 25V, X7R, 0805 package. The primary difference is tolerance: KGM21NR71E104KT has ±10% tolerance (matching the original), while KGM21NR71E104JT has ±5% tolerance. The ±5% version provides tighter capacitance accuracy for applications requiring higher precision.

Q: Can I use a 50V or 100V rated capacitor instead of 25V? A: Yes, for voltage derating applications. Higher voltage ratings provide additional safety margin when operating at lower voltages. KGM21NR71H104KT (50V) and KGM21AR72A104KU (100V) maintain the same 0.1 µF capacitance and 0805 package. Physical dimensions may vary slightly; verify thickness specifications if space is constrained.

Q: What does ROHS3 Compliant mean? A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. The original 08053C104KA12A is RoHS non-compliant. All recommended active substitutes are ROHS3 compliant, suitable for modern manufacturing and environmental standards.

Q: Does KAS21KR71E104KU have any special features? A: KAS21KR71E104KU includes soft termination technology (FLEXITERM™ Flexisafe series) and AEC-Q200 rating. Soft termination reduces mechanical stress on terminations during thermal cycling, improving reliability in automotive and boardflex-sensitive applications. This part is suitable for applications requiring enhanced durability.

Q: What is the difference in physical dimensions between parts? A: All parts use 0805 (2012 Metric) package with identical length (0.079" / 2.01mm) and width (0.049" / 1.25mm). Thickness varies: 08053C104KA12A and LD055C104JAB2A are 0.037" (0.94mm), while KGM21NR71E104 series parts are 0.039" (1.00mm), and KGM21AR72A104 series parts are 0.057" (1.45mm). Verify PCB layout clearance for higher voltage variants.

Q: Which substitute has the highest inventory availability? A: KGM21NR71H104KT has the highest inventory at 1555245 Pcs. This part is 0.1 µF, ±10% tolerance, 50V rating, X7R, 0805 package, ROHS3 compliant, and active. It is suitable for applications where voltage derating is acceptable.

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