B37872K5103K070 Equivalent & Substitute Parts

Part Overview

The B37872K5103K070 is a 10000 pF ±10% 50V ceramic capacitor with X7R temperature coefficient in 1206 (3216 Metric) surface mount package manufactured by EPCOS - TDK Electronics. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement in general-purpose circuit applications.

Key Parameters

Parameter	Specification
Capacitance	10000 pF
Tolerance	±10%
Voltage Rating	50V
Temperature Coefficient	X7R
Operating Temperature Range	-55°C to 125°C
Package Type	1206 (3216 Metric)
Mounting Type	Surface Mount, MLCC
Dimensions	0.126" L × 0.063" W (3.20mm × 1.60mm)
Maximum Thickness	0.035" (0.90mm)
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Capacitance value: 10000 pF (exact match required)
Tolerance: ±10% (exact match required)
Voltage rating: 50V (exact match required)
Temperature coefficient: X7R (exact match required)
Operating temperature range: -55°C to 125°C (exact match required)
Package: 1206 (3216 Metric) (exact match required)
Mounting type: Surface Mount, MLCC (exact match required)
Moisture sensitivity: MSL 1 (exact match required)

All substitute parts listed below meet these criteria. Mechanical dimensions (length, width, thickness) may vary within acceptable PCB assembly tolerances. RoHS and REACH compliance status are provided for regulatory consideration but do not affect electrical or mechanical substitutability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Operating Temp	Package	Thickness (Max)	Product Status	RoHS Status	MSL
B37872K5103K070	EPCOS - TDK Electronics	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.035" (0.90mm)	Obsolete	ROHS3 Compliant	1
12065C103KAJ2A	KYOCERA AVX	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.037" (0.94mm)	Active	RoHS non-compliant	1
12065C103KAT2M	KYOCERA AVX	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.037" (0.94mm)	Active	ROHS3 Compliant	1
12065C103KAT2P	KYOCERA AVX	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.037" (0.94mm)	Active	ROHS3 Compliant	1
12065C103KAT4P	KYOCERA AVX	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.037" (0.94mm)	Active	ROHS3 Compliant	1
12065C103KHT1A	KYOCERA AVX	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.037" (0.94mm)	Active	ROHS3 Compliant	1
C1206C103K5RAC7210	KEMET	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.035" (0.88mm)	Active	ROHS3 Compliant	1
C1206C103K5RAC7800	KEMET	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.035" (0.88mm)	Active	ROHS3 Compliant	1
CC1206KRX7R9BB103	YAGEO	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.033" (0.85mm)	Active	ROHS3 Compliant	1
CL31B103KBCNFNC	Samsung Electro-Mechanics	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.037" (0.95mm)	Active	ROHS3 Compliant	1
KGM31BR71H103KM	KYOCERA AVX	10000 pF	±10%	50V	X7R	-55°C ~ 125°C	1206 (3216 Metric)	0.037" (0.94mm)	Active	ROHS3 Compliant	1

Engineering Selection Recommendations

All listed substitute parts are electrically and mechanically equivalent to the B37872K5103K070. Selection should be based on the following factors:

Product Status: All substitute parts carry Active product status, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Regulatory Compliance: Most substitute parts are ROHS3 compliant. The exception is 12065C103KAJ2A (RoHS non-compliant), which may be restricted in applications subject to RoHS regulations. REACH compliance varies; parts marked REACH Unaffected are preferred for applications with strict regulatory requirements.

Inventory Availability: KEMET C1206C103K5RAC7800 and YAGEO CC1206KRX7R9BB103 offer the highest stock levels (21200 and 65200 units respectively), providing supply security for high-volume production.

Mechanical Fit: Thickness variations range from 0.033" to 0.037". Original part thickness is 0.035". Verify PCB assembly clearances if thickness tolerance is critical to your application.

Manufacturer Selection: KYOCERA AVX, KEMET, YAGEO, and Samsung Electro-Mechanics are established manufacturers with consistent quality records for ceramic capacitors in this specification range.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for B37872K5103K070?

A: Yes. All listed parts meet identical electrical specifications (10000 pF, ±10%, 50V, X7R, -55°C to 125°C) and mechanical requirements (1206 package, surface mount, MSL 1). They are direct substitutes for general-purpose applications.

Q: Does the thickness variation matter?

A: Thickness ranges from 0.033" to 0.037" across substitutes. The original part is 0.035". Verify your PCB assembly process and clearance requirements. Most modern pick-and-place equipment accommodates this range without adjustment.

Q: Which substitute should I choose for RoHS-regulated applications?

A: Select parts marked ROHS3 Compliant. Avoid 12065C103KAJ2A if RoHS compliance is mandatory. All other listed parts meet RoHS3 requirements.

Q: Are there inventory differences I should consider?

A: Yes. KEMET C1206C103K5RAC7800 (21200 units) and YAGEO CC1206KRX7R9BB103 (65200 units) offer significantly higher stock levels. KYOCERA AVX parts range from 774 to 1007 units. Choose based on your production volume and lead time requirements.

Q: What is the difference between REACH Affected and REACH Unaffected status?

A: REACH Affected parts may contain substances of concern requiring additional documentation. REACH Unaffected parts are preferred for applications with strict chemical compliance requirements. Both are legally usable; selection depends on your regulatory framework.

Q: Can I mix different substitute manufacturers in the same assembly?

A: Yes. All substitutes meet identical electrical and mechanical specifications. Mixing manufacturers is acceptable from a functional standpoint. Consider supply chain consistency and quality documentation requirements for your production process.

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