Texas Instruments UA78M
UA78M variants from Texas Instruments
UA78M Overview
What changes between part numbers, and what to check before you lock the BOM — Integrated Circuits (ICs).
UA78M is a Texas Instruments order-code family — not a single orderable MPN. This page lists 29 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
Package: TO-220-3 | Mounting Type: Through Hole | Operating Temperature: -40°C ~ 125°C | Output Type: Fixed | Voltage Input Max: 25V | Supplier Device Package: TO-220-3 Other listed variants describe: 5V 500mA LDO Regulator, SOT-223, 25V In, Positive; 5V 500mA LDO Regulator, SOT-223, 25V In, 3% Acc.
Across listed variants, watch these parameters: packages: TO-220-3.
Suffix examples in this family: 05IKCSE3, 05CDCY, 05CDCYG3, 05CDCYR, 05CDCYRG3, 05CKCS, 05CKCSE3, 05CKVURG3. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Example MPNs: UA78M05IKCSE3, UA78M05CDCY, UA78M05CDCYG3, UA78M05CDCYR, UA78M05CDCYRG3, UA78M05CKCS.
Key Features
- Footprint / package: TO-220-3Single package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 29 distinct suffix patternsExamples: 05IKCSE3, 05CDCY, 05CDCYG3, 05CDCYR, 05CDCYRG3 (+24 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Integrated Circuits (ICs) — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 29 UA78M part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| UA78M05IKCSE3 | Package: TO-220-3 | Mounting Type: Through Hole | Operating Temperature: -40°C ~ 125°C | Output Type: Fixed | Voltage Input Max: 25V | Supplier Device Package: TO-220-3 | TO-220-3 | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05CDCY | 5V 500mA LDO Regulator, SOT-223, 25V In, Positive | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05CDCYG3 | 5V 500mA LDO Regulator, SOT-223, 25V In, 3% Acc | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05CDCYR | 5V LDO 500mA SOT-223 Linear Voltage Regulator | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05CDCYRG3 | 500-mA, 30-V, linear voltage regulator 4-SOT-223 0 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05CKCS | 5V 500mA LDO Regulator, TO-220-3, 25V In, 80dB PSRR | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05CKCSE3 | 5V 500mA LDO Voltage Regulator, TO-220-3 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05CKVURG3 | 5V LDO Regulator, 500mA, 25V In, TO-252, 3% Acc | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05IDCYG3 | 500-mA, 30-V, linear voltage regulator 4-SOT-223 -40 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05IDCYR | 500mA 5V LDO Regulator, SOT-223-4, 7-25V In | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05IDCYRG3 | 500-mA, 30-V, linear voltage regulator 4-SOT-223 -40 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M05IKVURG3 | 5V 500mA LDO, TO-252, 25V In, -40 to 125C | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M06CKVURG3 | 500-mA, 30-V, linear voltage regulator 3-TO-252 0 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M08CDCY | 8V 500mA LDO Voltage Regulator SOT-223-4 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M08CDCYG3 | 500-mA, 30-V, linear voltage regulator 4-SOT-223 0 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M08CDCYR | 8V 500mA LDO Voltage Regulator, SOT-223-4, 25V In | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M08CKCSE3 | 500-mA, 30-V, linear voltage regulator 3-TO-220 0 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M08CKVURG3 | 8V 500mA LDO Regulator, TO-252, 25V In, 125°C | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M09CKVURG3 | 500-mA, 30-V, linear voltage regulator 3-TO-252 0 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| UA78M10CKVURG3 | 500-mA, 30-V, linear voltage regulator 3-TO-252 0 to 125 | - | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on UA78M map to package, grade, and reel options.
UA78M uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: 05IKCSE3, 05CDCY, 05CDCYG3, 05CDCYR, 05CDCYRG3, 05CKCS, 05CKCSE3, 05CKVURG3, 05IDCYG3, 05IDCYR (+19 more).
Full MPN examples: UA78M05IKCSE3, UA78M05CDCY, UA78M05CDCYG3, UA78M05CDCYR, UA78M05CDCYRG3.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right UA78M Integrated Circuits (ICs)
Match the footprint first
Packages here: TO-220-3. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For UA78M, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "UA78M" — include the full suffix (e.g. 05IKCSE3, 05CDCY, 05CDCYG3). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for UA78M product family
Identity
Variant Parameters
Source UA78M with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 29 ordering variants from Texas Instruments. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the UA78M product family.