This character is a Other Letter and is mainly used in the Katakana script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. This katakana joins with other adjacent katakana to form a word. U+30E4 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
Ya (hiragana: や, katakana: ヤ) is one of the Japanese kana, each of which represents one mora. The hiragana is written in three strokes, while the katakana is written in two. Both represent [ja]. Their shapes have origins in the character 也.
When small and preceded by an -i kana, this kana represents a palatalization of the preceding consonant sound with the [a] vowel (see yōon).
や can be used by itself as a grammatical particle to connect words in a nonexhaustive list (see Japanese particles#ya).
Representations
System
Representation (click value to copy)
Nº
12516
UTF-8
E3 83 A4
UTF-16
30 E4
UTF-32
00 00 30 E4
URL-Quoted
%E3%83%A4
HTML hex reference
ヤ
Wrong windows-1252 Mojibake
ヤ
Encoding: BIG5 (hex bytes)
C7 7C
Encoding: BIG5HKSCS (hex bytes)
C7 E0
Encoding: CP932 (hex bytes)
83 84
Encoding: CP949 (hex bytes)
AB E4
Encoding: CP950 (hex bytes)
C7 7C
Encoding: EUC_JP (hex bytes)
A5 E4
Encoding: EUC_JIS_2004 (hex bytes)
A5 E4
Encoding: EUC_JISX0213 (hex bytes)
A5 E4
Encoding: EUC_KR (hex bytes)
AB E4
Encoding: GB2312 (hex bytes)
A5 E4
Encoding: GBK (hex bytes)
A5 E4
Encoding: GB18030 (hex bytes)
A5 E4
Encoding: HZ (hex bytes)
7E 7B 25 64 7E 7D
Encoding: ISO2022_JP (hex bytes)
1B 24 42 25 64 1B 28 42
Encoding: ISO2022_JP_1 (hex bytes)
1B 24 42 25 64 1B 28 42
Encoding: ISO2022_JP_2 (hex bytes)
1B 24 42 25 64 1B 28 42
Encoding: ISO2022_JP_2004 (hex bytes)
1B 24 42 25 64 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)
1B 24 42 25 64 1B 28 42
Encoding: ISO2022_JP_EXT (hex bytes)
1B 24 42 25 64 1B 28 42
Encoding: ISO2022_KR (hex bytes)
1B 24 29 43 0E 2B 64 0F
Encoding: JOHAB (hex bytes)
DE 74
Encoding: SHIFT_JIS (hex bytes)
83 84
Encoding: SHIFT_JIS_2004 (hex bytes)
83 84
Encoding: SHIFT_JISX0213 (hex bytes)
83 84
Adobe Glyph List
yakatakana
digraph
Ya
RFC 5137
\u'30E4'
Bash and Zsh inside echo -e
\u30E4
C and C++
\u30E4
C#
\u30E4
CSS
\0030E4
Excel
=UNICHAR(12516)
Go
\u30E4
JavaScript
\u30E4
Modern JavaScript since ES6
\u{30e4}
JSON
\u30E4
Java
\u30E4
Lua
\u{30E4}
Matlab
char(12516)
Perl
"\x{30E4}"
PHP
\u{30e4}
PostgreSQL
U&'\30E4'
PowerShell
`u{30E4}
Python
\u30E4
Ruby
\u{30e4}
Rust
\u{30e4}
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