U+FACA "響" CJK Compatibility Ideograph-# Unicode Character

Unicode Version 17.0

U+FACA "響" CJK Compatibility Ideograph-# is a rarely used symbol that belongs to the CJK Compatibility Ideographs block, which was created to support roundtrip conversion between older East Asian character encoding standards and Unicode. This specific ideograph is a compatibility form, meaning it corresponds to a character in another standard (like a Japanese or Chinese legacy encoding) that has a distinct shape or use but is not a unique unified CJK character. It does not have a clearly defined semantic meaning on its own, as its primary purpose is to preserve the textual identity of a source encoding rather than to function as an independent word or logograph. In modern digital text, such compatibility ideographs are often avoided in favor of their unified equivalents, making U+FACA a historical or technical artifact rather than a practical character for everyday writing.

General Properties

Code Point U+FACA
Version Added 4.1
Name CJK Compatibility Ideograph-#
Block CJK Compatibility Ideographs
General Category Other Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Canonical
Decomposition Mapping "響" U+97FF CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding 響
HTML Hex Encoding 響
UTF-8 Encoding 0xEF 0xAB 0x8A
UTF-16 Encoding 0xFACA
UTF-32 Encoding 0x0000FACA
C/C++/Java Escape \ufaca

Unicode Properties

Full Composition Exclusion Yes
Numeric Type None
Numeric Value NaN
Line Break Ideographic
East Asian Width Wide
Changes When NFKC Casefolded Yes
NFKC Casefold "響" U+97FF CJK Unified Ideograph-#
NFKC Simple Casefold "響" U+97FF CJK Unified Ideograph-#
Script Han
Script Extensions Han
Indic Syllabic Category Other
ID Start Yes
XID Start Yes
ID Continue Yes
XID Continue Yes
Alphabetic Yes
Vertical Orientation Upright
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Other
Sentence Break OLetter
Ideographic Yes

Unihan Properties

kCompatibilityVariant U+97FF
kIRG_KPSource KP1-866A
kRSUnicode 180.11
kTotalStrokes 20