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1210B105K101CT
Walsin Technology Corporation
CAP CER 1UF 100V X7R 1210
15891 Pcs New Original In Stock
1 µF ±10% 100V Ceramic Capacitor X7R 1210 (3225 Metric)
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5.0 / 5.0
- (386 Ratings)
1210B105K101CT
Product Overview
10452760
DiGi Electronics Part Number
1210B105K101CT-DGManufacturer
Walsin Technology Corporation
1210B105K101CT
Description
CAP CER 1UF 100V X7R 1210Inventory
15891 Pcs New Original In Stock
1 µF ±10% 100V Ceramic Capacitor X7R 1210 (3225 Metric)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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1210B105K101CT Technical Specifications
Category
Ceramic Capacitors
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Capacitance
1 µF
Tolerance
±10%
Voltage - Rated
100V
Temperature Coefficient
X7R
Operating Temperature
-55°C ~ 125°C
Features
-
Ratings
-
Applications
General Purpose
Failure Rate
-
Mounting Type
Surface Mount, MLCC
Package / Case
1210 (3225 Metric)
Size / Dimension
0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max)
-
Thickness (Max)
0.087" (2.20mm)
Lead Spacing
-
Lead Style
-
Datasheet & Documents
HTML Datasheet
1210B105K101CT-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8532.24.0020
Additional Information
Other Names
1292-1210B105K101CTTR
Standard Package
3,000
Alternative Parts
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
DiGi Electronics consistently ensures product availability, even during high demand periods.
Dec 02, 2025
The eco-friendly packaging materials were clearly labeled and easy to recycle, which I appreciate.
Dec 02, 2025
The team is well-trained and friendly, making every interaction pleasant and productive.
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Frequently Asked Questions (FAQ)
What are the key risks when replacing C3225X7R2A105K200AM with Walsin 1210B105K101CT in a high-temperature industrial power supply design?
When substituting Walsin 1210B105K101CT for Murata C3225X7R2A105K200AM, verify footprint compatibility—Walsin 1210B105K101CT uses a 1210 (3.2mm x 2.5mm) case while Murata's C3225 is 3225 metric, which may require PCB redesign. Both parts have 100V X7R ratings and similar capacitance, but Walsin’s DC bias performance can degrade faster under high field strength. In a high-temperature industrial power supply (>85°C), derate voltage to at least 50% of rated 100V to maintain stable 1µF capacitance. Also confirm equivalent ESR and ripple current capability to avoid output instability. Always validate via solder-joint thermal cycling if operating near 125°C sustained.
How does the voltage coefficient effect in Walsin 1210B105K101CT impact decoupling performance in a 5V rail with transient loads?
The Walsin 1210B105K101CT exhibits significant capacitance drop under DC bias—typical X7R dielectrics lose 60–80% of rated 1µF at 50V and even 40–50% at 5V. In a 5V rail application, the effective capacitance may be only ~500nF, which risks inadequate decoupling during fast load transients. To mitigate, parallel Walsin 1210B105K101CT with a smaller 0.1µF 100V X7R (e.g., 0805) to enhance high-frequency response, or select a higher-voltage-rated part (e.g., 200V) to reduce field stress and improve usable capacitance. Always model impedance vs. frequency using manufacturer SPICE models if available.
Can Walsin 1210B105K101CT be used reliably in automotive under-hood applications given its X7R dielectric and 1210 package size?
While the Walsin 1210B105K101CT supports an operating temperature range of -55°C to 125°C, automotive under-hood environments can exceed 125°C in extreme conditions, pushing the part beyond its safe operating limit. Additionally, the 1210 SMD package is prone to mechanical stress cracking from thermal cycling and board flex. For under-hood use, consider automotive-qualified alternatives like TAIYO YUDEN’s LMK316BJ107MM-T or Murata’s GRM32DC71H107KA12#, which are AEC-Q200 compliant. If using Walsin 1210B105K101CT, implement strict board strain relief, avoid placement near mounting holes, and ensure conformal coating to manage humidity and thermal shock.
What PCB layout practices minimize microphonics and cracking risks with Walsin 1210B105K101CT in vibration-prone environments?
To reduce microphonics and mechanical cracking in vibration-sensitive systems, optimize PCB layout for the Walsin 1210B105K101CT by orienting the longer 3.2mm dimension perpendicular to expected board flex, minimizing stress on solder joints. Use solder reliefs or rounded traces to reduce stress concentration. Avoid placing near board edges or connectors. Implement castellated mounting vias or edge restraints in high-vibration equipment. Additionally, use polymer solder masks and low-modulus solder paste if feasible. For critical applications, consider conformal coating or potting to dampen mechanical resonance. Always validate with mechanical shock and thermal cycling testing.
How does moisture sensitivity level (MSL-1) of Walsin 1210B105K101CT affect SMT assembly yield in humid environments?
The Walsin 1210B105K101CT has MSL-1 (unlimited floor life), meaning it can be stored and handled at ambient conditions ≤30°C/85% RH without pre-baking. This significantly reduces SMT assembly risks in high-humidity environments compared to MSL-2 or higher parts. However, ensure storage remains within specification to prevent surface oxidation or moisture absorption at the terminations, which can cause tombstoning or poor wetting. Use nitrogen-assisted reflow if humidity control is inconsistent. Verify solder paste stencil design (0.15mm thick recommended) matches 1210 footprint to ensure consistent thermal mass and minimize defects during rapid heating.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
1210B105K101CT CAD Models
Walsin Technology Corporation 1210B105K101CT PCB symbols & footprints
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