1812GC392KAT3A\SB Equivalent & Substitute Parts

Part Overview

The 1812GC392KAT3A\SB is a 3900 pF ±10% 2000V (2kV) ceramic capacitor manufactured by KYOCERA AVX in the 1812 (4532 Metric) surface mount package. This high-voltage X7R temperature coefficient capacitor is designed for general-purpose applications requiring stable capacitance across the -55°C to 125°C operating range. The part is currently active in production with 928 units in stock. Equivalent and substitute parts are identified when electrical specifications and mechanical compatibility allow direct replacement or functional upgrade within the same application context.

Substiute Parts

1812GC392KAT3A\SB

KYOCERA AVXIn Stock: 9551812GC392KAT3A\SB Datasheet

Current PartRFQ

1812HC392KAT1A

KYOCERA AVXIn Stock: 46461812HC392KAT1A Datasheet

UpgradeRFQ

C1812C392KGRAC7800

KEMETIn Stock: 3217C1812C392KGRAC7800 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812GC392KAT3A\SB is determined by the following critical parameters:

• Capacitance Value: Must be 3900 pF
• Tolerance: Must be ±10%
• Temperature Coefficient: Must be X7R
• Package / Case: Must be 1812 (4532 Metric)
• Mounting Type: Must be Surface Mount, MLCC
• Voltage Rating: Must be equal to or greater than 2000V (2kV)
• Operating Temperature Range: Must support -55°C ~ 125°C
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

Two substitute parts meet these criteria:

1. 1812HC392KAT1A (KYOCERA AVX) — Upgrade substitute with increased voltage rating (3000V)
2. C1812C392KGRAC7800 (KEMET) — Equivalent substitute with same voltage rating (2000V)

Parameter Comparison

Engineering Selection Recommendations

1812HC392KAT1A (KYOCERA AVX) — This upgrade substitute provides increased voltage headroom at 3000V (3kV) while maintaining identical capacitance, tolerance, and temperature coefficient specifications. The part is ROHS3 compliant and carries MSL 1 rating. Physical dimensions remain compatible with 1812 footprints, though maximum thickness increases to 2.80mm. This substitute is suitable for applications requiring enhanced voltage margin or operating in higher-voltage environments.

C1812C392KGRAC7800 (KEMET) — This equivalent substitute maintains the same 2000V voltage rating and electrical specifications as the main part. It is ROHS3 compliant with MSL 1 rating. Physical dimensions are slightly reduced (4.50mm length, 1.80mm thickness), which may provide layout advantages in space-constrained designs. The part is designated as manufacturer-recommended and belongs to the SMD Comm X7R HV series with low ESL characteristics.

Both substitutes are active products with confirmed inventory availability and meet all compliance and regulatory requirements specified for the original part.

Frequently Asked Questions (FAQ)

Q: Can 1812HC392KAT1A be used as a direct replacement for 1812GC392KAT3A\SB?

A: Yes. The 1812HC392KAT1A is a direct substitute with identical electrical specifications (3900 pF, ±10%, X7R, -55°C to 125°C) and package footprint (1812). The higher voltage rating (3000V vs. 2000V) provides additional design margin. Verify that PCB layout accommodates the increased thickness (2.80mm vs. 2.20mm).

Q: Can C1812C392KGRAC7800 be used as a direct replacement for 1812GC392KAT3A\SB?

A: Yes. The C1812C392KGRAC7800 is a direct substitute with identical electrical specifications (3900 pF, ±10%, X7R, 2000V, -55°C to 125°C) and 1812 package footprint. Physical dimensions are slightly smaller (4.50mm length, 1.80mm thickness), which may improve PCB layout efficiency.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: capacitance value (3900 pF), tolerance (±10%), temperature coefficient (X7R), voltage rating (≥2000V), operating temperature range (-55°C to 125°C), package type (1812 MLCC), and compliance certifications (ROHS3, MSL 1).

Q: Are there physical footprint differences between these parts?

A: All three parts use the 1812 (4532 Metric) package footprint. Length and width dimensions are nominally identical. Maximum thickness varies: 1812GC392KAT3A\SB (2.20mm), 1812HC392KAT1A (2.80mm), and C1812C392KGRAC7800 (1.80mm). Verify PCB clearance specifications for your application.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and are REACH unaffected. All are classified as EAR99 for export control purposes.