U+3138 "ㄸ" Hangul Letter Ssangtikeut Unicode Character
Unicode Version 17.0
ㄸ
U+3138 "ㄸ" Hangul Letter Ssangtikeut is a letter used in the Korean writing system Hangeul, representing a tensed, fortis sound of the consonant "d" or "t", often transliterated as "tt" in romanization like the "d" in "toddle". It belongs to the Hangul Compatibility Jamo block, which was designed to encode the individual letter shapes from older Korean character sets, making it separate from the modern standard "double path" jamo found in the modern Hangul Jamo block. Historically, this character was used in pre-compositional Hangul systems, but today it is generally replaced by the standard jamo sequence "ᄄ" (U+1104) in modern Unicode text processing.
General Properties
| Code Point | U+3138 |
| Version Added | 1.1 |
| Name | Hangul Letter Ssangtikeut |
| Unicode 1.0 Name | Hangul Letter Ssang Digeud |
| Block | Hangul Compatibility Jamo |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Compat |
| Decomposition Mapping | "ᄄ" U+1104 Hangul Choseong Ssangtikeut |
Encodings
| HTML Decimal Encoding | ㄸ |
| HTML Hex Encoding | ㄸ |
| UTF-8 Encoding | 0xE3 0x84 0xB8 |
| UTF-16 Encoding | 0x3138 |
| UTF-32 Encoding | 0x00003138 |
| C/C++/Java Escape | \u3138 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Wide |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ᄄ" U+1104 Hangul Choseong Ssangtikeut |
| NFKC Simple Casefold | "ᄄ" U+1104 Hangul Choseong Ssangtikeut |
| Script | Hangul |
| Script Extensions | Hangul |
| 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 | Alphabetic letter |
| Sentence Break | OLetter |