KAF32LR71H225MU Equivalent & Substitute Parts

Part Overview

The KAF32LR71H225MU is a 2.2 µF ceramic capacitor rated at 50V with X7R temperature coefficient, manufactured by KYOCERA AVX in the 1210 (3225 Metric) package. This FLEXITERM® series component features soft termination technology and meets AEC-Q200 automotive qualification standards. The part is actively produced and available in high volume. Substitute parts are identified when design requirements allow for tolerance upgrades or voltage rating increases while maintaining electrical and mechanical compatibility.

Substiute Parts

KAF32LR71H225MU

KYOCERA AVXIn Stock: 946KAF32LR71H225MU Datasheet

Current PartRFQ

KAF32LR71H225KU

KYOCERA AVXIn Stock: 918KAF32LR71H225KU Datasheet

UpgradeRFQ

KAF32LR72A225KU

KYOCERA AVXIn Stock: 55871KAF32LR72A225KU Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KAF32LR71H225MU are qualified based on the following criteria:

Electrical Compatibility: Capacitance value (2.2 µF) and temperature coefficient (X7R) remain constant across all substitutes. Voltage rating and tolerance may be upgraded without affecting downward compatibility in the circuit.

Mechanical Compatibility: All substitute parts maintain the 1210 (3225 Metric) package footprint, identical physical dimensions (3.20mm L × 2.50mm W × 2.79mm max thickness), and surface mount mounting type.

Certification & Compliance: All parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating.

Allowed Parameter Variations:

• Tolerance: May upgrade from ±20% to ±10% for improved accuracy
• Voltage Rating: May upgrade from 50V to 100V for enhanced voltage margin

Parameter Comparison

Engineering Selection Recommendations

KAF32LR71H225KU is a direct upgrade substitute when improved capacitance tolerance is required. This part maintains the 50V voltage rating while reducing tolerance from ±20% to ±10%, providing tighter capacitance accuracy for applications requiring enhanced performance stability. Both parts are actively produced with high inventory availability.

KAF32LR72A225KU is applicable when circuit design permits a higher voltage rating. The 100V rating provides additional voltage margin and safety headroom while maintaining the same 2.2 µF capacitance and ±10% tolerance. This part is available in Cut Tape and Digi-Reel® packaging with significantly higher inventory levels. Selection of this part is appropriate for designs where voltage derating requirements or future design iterations may benefit from increased voltage capability.

All three parts maintain identical mechanical compatibility, automotive qualification status, and compliance certifications, ensuring seamless integration into existing PCB designs and manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can KAF32LR71H225KU replace KAF32LR71H225MU in my design?

A: Yes. KAF32LR71H225KU is a direct substitute with identical electrical and mechanical specifications except for improved tolerance (±10% versus ±20%). No circuit modifications or PCB layout changes are required.

Q: What is the difference between KAF32LR71H225KU and KAF32LR72A225KU?

A: Both parts share the same 2.2 µF capacitance and ±10% tolerance. The primary difference is voltage rating: KAF32LR71H225KU is rated 50V, while KAF32LR72A225KU is rated 100V. The 100V part provides higher voltage margin and is suitable for applications requiring increased voltage headroom.

Q: Are all substitute parts in the same package?

A: Yes. All three parts use the 1210 (3225 Metric) surface mount package with identical footprint dimensions (3.20mm × 2.50mm × 2.79mm max thickness). No PCB redesign is necessary when switching between these parts.

Q: Do substitute parts maintain automotive qualification?

A: Yes. All substitute parts carry AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating, matching the original part's certifications.

Q: What packaging options are available for these parts?

A: KAF32LR71H225MU and KAF32LR71H225KU are supplied in Tape & Reel (TR) packaging. KAF32LR72A225KU is available in Cut Tape (CT) and Digi-Reel® packaging options.