MBASU105SCG090DFNA01 Equivalent & Substitute Parts

Part Overview

The MBASU105SCG090DFNA01 is a 9 pF ceramic capacitor manufactured by Taiyo Yuden, rated for 50V with C0G/NP0 temperature coefficient characteristics. This surface-mount multilayer ceramic capacitor (MLCC) in 0402 (1005 Metric) package is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced performance characteristics.

Key Parameters

Parameter	Value
Capacitance	9 pF
Tolerance	±0.5pF
Voltage - Rated	50V
Temperature Coefficient	C0G, NP0
Operating Temperature Range	-55°C ~ 125°C
Package / Case	0402 (1005 Metric)
Mounting Type	Surface Mount, MLCC
Size / Dimension	0.039" L x 0.020" W (1.00mm x 0.50mm)
Thickness (Max)	0.022" (0.55mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MBASU105SCG090DFNA01 are qualified based on strict electrical and mechanical parameter matching. All substitute parts maintain identical capacitance (9 pF), tolerance (±0.5pF), rated voltage (50V), temperature coefficient (C0G/NP0), operating temperature range (-55°C to 125°C), package type (0402/1005 Metric), and physical dimensions (0.039" L x 0.020" W, 0.022" max thickness). All substitutes are surface-mount MLCCs with RoHS3 compliance and MSL 1 rating.

Substitutes are categorized into two groups:

Upgrade Substitutes possess additional qualifications beyond the base requirements, including AEC-Q200 automotive rating and REACH compliance status, making them suitable for applications requiring enhanced reliability documentation.

Parametric Equivalents match all core electrical and mechanical specifications without additional automotive certifications. Some parametric equivalents feature enhanced performance characteristics such as high Q or low ESL, while others represent alternative manufacturer offerings with identical base specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	Temp Coeff	Operating Temp	Package	Size (L x W)	Thickness Max	Product Status	AEC-Q200	RoHS3	MSL
MBASU105SCG090DFNA01	Taiyo Yuden	9 pF	±0.5pF	50V	C0G, NP0	-55°C ~ 125°C	0402 (1005 Metric)	0.039" x 0.020" (1.00mm x 0.50mm)	0.022" (0.55mm)	Active	No	Yes	1
AC0402DRNPO9BN9R0	YAGEO	9 pF	±0.5pF	50V	C0G, NP0	-55°C ~ 125°C	0402 (1005 Metric)	0.039" x 0.020" (1.00mm x 0.50mm)	0.022" (0.55mm)	Active	Yes	Yes	1
CGA2B2C0G1H090D050BA	TDK Corporation	9 pF	±0.5pF	50V	C0G, NP0	-55°C ~ 125°C	0402 (1005 Metric)	0.039" x 0.020" (1.00mm x 0.50mm)	0.022" (0.55mm)	Active	Yes	Yes	1
0402N9R0D500CT	Walsin Technology Corporation	9 pF	±0.5pF	50V	C0G, NP0	-55°C ~ 125°C	0402 (1005 Metric)	0.039" x 0.020" (1.00mm x 0.50mm)	0.022" (0.55mm)	Active	No	Yes	1
C1005C0G1H090D050BA	TDK Corporation	9 pF	±0.5pF	50V	C0G, NP0	-55°C ~ 125°C	0402 (1005 Metric)	0.039" x 0.020" (1.00mm x 0.50mm)	0.022" (0.55mm)	Not For New Designs	No	Yes	1
CC0402DRNPO9BN9R0	YAGEO	9 pF	±0.5pF	50V	C0G, NP0	-55°C ~ 125°C	0402 (1005 Metric)	0.039" x 0.020" (1.00mm x 0.50mm)	0.022" (0.55mm)	Active	No	Yes	1
CQ0402DRNPO9BN9R0	YAGEO	9 pF	±0.5pF	50V	C0G, NP0	-55°C ~ 125°C	0402 (1005 Metric)	0.039" x 0.020" (1.00mm x 0.50mm)	0.022" (0.55mm)	Active	No	Yes	1

Engineering Selection Recommendations

For Automotive Applications: AC0402DRNPO9BN9R0 (YAGEO) and CGA2B2C0G1H090D050BA (TDK Corporation) are qualified substitutes with AEC-Q200 certification and active product status. Both parts provide documented reliability for automotive-grade applications with REACH compliance.

For General-Purpose Applications with Active Status: 0402N9R0D500CT (Walsin Technology Corporation), CC0402DRNPO9BN9R0 (YAGEO), and CQ0402DRNPO9BN9R0 (YAGEO) maintain active production status with full parameter equivalence to the primary part. CQ0402DRNPO9BN9R0 includes high Q characteristics for applications requiring enhanced performance.

For Legacy Design Support: C1005C0G1H090D050BA (TDK Corporation) is classified as "Not For New Designs" and should be used only for existing design maintenance or obsolescence mitigation. This part includes low ESL features but is not recommended for new product development.

All substitute parts maintain identical electrical specifications, package dimensions, and environmental compliance ratings. Selection should be based on application requirements, supply availability, and qualification status.

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for a part to be considered a direct substitute?

A: Direct substitutes must maintain identical capacitance (9 pF), tolerance (±0.5pF), rated voltage (50V), temperature coefficient (C0G/NP0), and operating temperature range (-55°C to 125°C). All substitute parts listed meet these criteria.

Q: Are all substitute parts physically compatible with the original MBASU105SCG090DFNA01?

A: Yes. All substitute parts use the 0402 (1005 Metric) package with identical dimensions of 0.039" L x 0.020" W and maximum thickness of 0.022" (0.55mm). Physical compatibility is confirmed across all listed substitutes.

Q: What is the difference between upgrade substitutes and parametric equivalents?

A: Upgrade substitutes (AC0402DRNPO9BN9R0 and CGA2B2C0G1H090D050BA) include AEC-Q200 automotive qualification and REACH compliance, making them suitable for applications requiring enhanced reliability documentation. Parametric equivalents match all core specifications but may lack automotive certifications or may have different product status classifications.

Q: Can C1005C0G1H090D050BA be used in new designs?

A: C1005C0G1H090D050BA is classified as "Not For New Designs." This part should be used only for maintaining existing designs or addressing obsolescence in legacy products. For new designs, select from parts with active product status.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates unlimited shelf life without moisture sensitivity concerns. All listed substitute parts carry MSL 1 rating, meaning they do not require special moisture-controlled storage or handling procedures.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and restricted substance limitations.

Q: Which substitute offers high Q characteristics?

A: CQ0402DRNPO9BN9R0 (YAGEO) is specified with high Q characteristics, making it suitable for applications requiring enhanced performance in resonant circuits or high-frequency applications.

Q: Which substitute offers low ESL characteristics?

A: C1005C0G1H090D050BA (TDK Corporation) includes low ESL (equivalent series inductance) features. However, this part is classified as "Not For New Designs" and should only be used for legacy design support.

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