1812HC102MAT3A Equivalent & Substitute Parts

Part Overview

The 1812HC102MAT3A is a 1000 pF high-voltage ceramic capacitor manufactured by KYOCERA AVX, rated for 3000V (3kV) operation with X7R temperature coefficient. This surface-mount multilayer ceramic capacitor (MLCC) in 1812 (4532 Metric) package format is designed for general-purpose high-voltage applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory optimization, and design alternatives where tolerance or packaging specifications permit functional interchange.

Substiute Parts

1812HC102MAT3A

KYOCERA AVXIn Stock: 8291812HC102MAT3A Datasheet

Current PartRFQ

KGM43FR73U102MV

KYOCERA AVXIn Stock: 1494KGM43FR73U102MV Datasheet

DirectRFQ

1812HC102KAT1A

KYOCERA AVXIn Stock: 25031812HC102KAT1A Datasheet

UpgradeRFQ

KGM43FR73U102KV

KYOCERA AVXIn Stock: 3187KGM43FR73U102KV Datasheet

UpgradeRFQ

1812HC102MAT1A

KYOCERA AVXIn Stock: 22431812HC102MAT1A Datasheet

Parametric EquivalentRFQ

C1812C102KHRAC7800

KEMETIn Stock: 1416C1812C102KHRAC7800 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1812HC102MAT3A is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance: 1000 pF (exact match required)
• Voltage Rating: 3000V (3kV) minimum (equal or higher acceptable)
• Temperature Coefficient: X7R (required for temperature stability)
• Package / Case: 1812 (4532 Metric) (physical and electrical compatibility)
• Mounting Type: Surface Mount, MLCC (assembly compatibility)
• Operating Temperature Range: -55°C to 125°C (functional envelope)

Flexible Parameters:

• Tolerance: ±20% (main part) to ±10% (upgrade substitutes) — tighter tolerance represents functional upgrade
• Packaging Format: Cut Tape (CT), Tape & Reel (TR), or Digi-Reel® — logistics variation only
• Thickness: Minor variations within 1812 package specification (2.20mm to 2.21mm) — acceptable within mechanical tolerance
• Manufacturer: KYOCERA AVX or KEMET — both suppliers meet compliance requirements

Substitution Categories:

1. Direct Equivalent (KGM43FR73U102MV): Identical electrical specifications and tolerance (±20%), different packaging (Tape & Reel vs. standard).

2. Upgrade Substitutes (1812HC102KAT1A, KGM43FR73U102KV, C1812C102KHRAC7800): Tighter tolerance (±10% vs. ±20%), same voltage and capacitance, enhanced precision for applications requiring stricter capacitance control.

3. Parametric Equivalent (1812HC102MAT1A): Identical electrical and mechanical specifications to main part, alternative packaging format (Cut Tape & Digi-Reel®).

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active production status and full ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1), ensuring regulatory and environmental compatibility with the original 1812HC102MAT3A specification.

For Direct Replacement (Same Tolerance): Select KGM43FR73U102MV or 1812HC102MAT1A when procurement requires identical ±20% tolerance specification. Both parts maintain electrical and mechanical equivalence to the main part. Choice between these options depends on packaging format requirements: KGM43FR73U102MV is supplied in Tape & Reel format for automated assembly, while 1812HC102MAT1A is available in Cut Tape & Digi-Reel® format for mixed-volume or manual assembly operations.

For Precision Upgrade (Tighter Tolerance): Select 1812HC102KAT1A, KGM43FR73U102KV, or C1812C102KHRAC7800 when circuit design permits or requires ±10% tolerance specification. These upgrade substitutes provide enhanced capacitance accuracy without changing voltage rating, temperature coefficient, or operating envelope. The KYOCERA AVX options (1812HC102KAT1A and KGM43FR73U102KV) differ only in packaging format; C1812C102KHRAC7800 from KEMET offers the same electrical performance with reduced thickness (1.80mm vs. 2.20mm), beneficial for space-constrained PCB layouts.

Packaging and Logistics Considerations: Tape & Reel (TR) packaging is standard for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging supports lower-volume production and mixed-component kitting. Selection should align with assembly process capability and inventory management strategy.

Frequently Asked Questions (FAQ)

Q: Can I substitute 1812HC102MAT3A with KGM43FR73U102KV?

A: Yes. KGM43FR73U102KV is an upgrade substitute with identical capacitance (1000 pF), voltage rating (3000V), temperature coefficient (X7R), and package format (1812). The primary difference is tighter tolerance (±10% vs. ±20%), which represents improved precision. Electrical and mechanical compatibility is maintained. Packaging format is Tape & Reel (TR).

Q: What is the difference between ±20% and ±10% tolerance?

A: Tolerance defines the allowable deviation of actual capacitance from the nominal 1000 pF value. ±20% tolerance permits capacitance between 800 pF and 1200 pF; ±10% tolerance restricts the range to 900 pF and 1100 pF. Tighter tolerance (±10%) is beneficial for circuits requiring precise capacitance control, such as filtering or timing applications. The main part (1812HC102MAT3A) with ±20% tolerance is suitable for general-purpose applications where broader tolerance is acceptable.

Q: Are all substitute parts in the same 1812 package?

A: Yes, all substitute parts use the 1812 (4532 Metric) package format, ensuring PCB footprint compatibility. Physical dimensions are nominally 4.60mm × 3.20mm (or 4.50mm × 3.20mm for the KEMET part). Thickness varies slightly: KYOCERA AVX parts are 2.20mm to 2.21mm; the KEMET part (C1812C102KHRAC7800) is 1.80mm. These thickness variations remain within 1812 package mechanical tolerance and do not affect assembly compatibility.

Q: Can I use C1812C102KHRAC7800 (KEMET) as a direct replacement?

A: Yes, with the following considerations: C1812C102KHRAC7800 is electrically equivalent with ±10% tolerance (upgrade), same voltage rating (3000V), and X7R temperature coefficient. Physical dimensions are 4.50mm × 3.20mm (vs. 4.60mm × 3.20mm for KYOCERA AVX), and thickness is 1.80mm (vs. 2.20mm). These dimensional differences are within 1812 package specification and do not prevent PCB assembly. The KEMET part is suitable for space-constrained designs. Verify PCB footprint design accommodates the slightly reduced length and thickness.

Q: What is the difference between packaging formats (Tape & Reel, Cut Tape, Digi-Reel®)?

A: Packaging format affects logistics and assembly process compatibility, not electrical performance. Tape & Reel (TR) is standard for high-volume automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® supports lower-volume production, manual assembly, or mixed-component kitting. Selection depends on production volume, assembly equipment capability, and inventory management requirements. All formats contain identical components.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the regulatory and environmental compliance of the main part 1812HC102MAT3A.