{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TCK108AG,LF","brand":"Toshiba Semiconductor","brandSlug":"toshiba","productSlug":"TCK108AGLF","canonicalUrl":"https://icboms.com/toshiba/TCK108AGLF","factsUrl":"https://icboms.com/api/mcp/products/TCK108AG%2CLF","rawCanonicalId":null},"summary":{"shortDescription":"Toshiba Semiconductor TCK108AG,LF P-channel high-side load switch, 1A output, 34mOhm Rds(on), 1.1-5.5V load, WLCSP-4 0.79x0.79mm, Tape & Reel.","salesMarkdown":"## 1A high-side switch with 34mOhm typical on-resistance The Toshiba TCK108AG,LF is a single-channel P-channel high-side load switch rated for 1A continuous output current with a typical Rds(on) of 34mOhm. The 1.1V to 5.5V load voltage range covers common core rails (1.2V, 1.8V, 3.3V) and I/O supplies (5V) in portable and embedded systems. The 34mOhm typical on-resistance at 1A yields a conduction loss of roughly 34mW — negligible in most battery-powered designs, but the actual junction temperature rise depends on the PCB copper area under the 0.79x0.79mm WLCSP package. ## Load discharge and slew rate control Two integrated features manage power-up and power-down behaviour: the slew-rate controlled turn-on limits inrush current into capacitive loads, and the load discharge function pulls the output to ground when the switch is disabled, preventing floating output rails that could hold downstream logic in an indeterminate state. The non-inverting On/Off interface means the switch conducts when the control pin is high — standard active-high logic that simplifies connection to a GPIO from an MCU or SoC without needing an external inverter. ## Package and board-fit: 4-bump WLCSP Housed in a 4-bump wafer-level chip-scale package (WLCSP) measuring 0.79 x 0.79 mm, the TCK108AG,LF requires a PCB land pattern matching the Toshiba recommended footprint — typically a 2x2 array of 0.25mm diameter solder balls on 0.4mm pitch. The tiny footprint suits space-constrained designs like smartphones, wearables, and IoT modules. Surface-mount assembly with Tape & Reel or Cut Tape packaging. The WLCSP package has no exposed thermal pad; heat dissipation relies on the PCB copper plane under the package and the solder balls themselves.","metaTitle":"Toshiba TCK108AG,LF High-Side Switch, 1A, 34mOhm, WLCSP","metaDescription":"Active Toshiba TCK108AG,LF P-channel high-side load switch, 1A max output, 34mOhm typical Rds(on), 1.1-5.5V load range, WLCSP-4 package. ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Load Discharge, Slew Rate Controlled","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"P-Channel","Switch Type":"General Purpose","Rds On (Typ)":"34mOhm","Mounting Type":"Surface Mount","Package / Case":"4-UFBGA, WLCSP","Voltage - Load":"1.1V ~ 5.5V","lifecycle_stage":"eol_hot","Number of Outputs":"1","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 85°C (TA)","Current - Output (Max)":"1A","Supplier Device Package":"4-WCSPD (0.79x0.79)","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.47","stockQuantity":19,"priceTiers":[{"qty":1,"price":"$0.47000","currency":"USD"},{"qty":10,"price":"$0.38500","currency":"USD"},{"qty":25,"price":"$0.35160","currency":"USD"},{"qty":100,"price":"$0.26180","currency":"USD"},{"qty":250,"price":"$0.23724","currency":"USD"},{"qty":500,"price":"$0.19634","currency":"USD"},{"qty":1000,"price":"$0.14726","currency":"USD"},{"qty":2500,"price":"$0.13499","currency":"USD"},{"qty":5000,"price":"$0.12681","currency":"USD"},{"qty":10000,"price":"$0.11862","currency":"USD"},{"qty":25000,"price":"$0.10881","currency":"USD"},{"qty":50000,"price":"$0.10472","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/04786053aac701e368ac0bf71de64de6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between TCK108AG,LF and TCK107AG,LF?","answer":"Both parts share the same 34mOhm typical Rds(on), 1A output, non-inverting input, and WLCSP-4 package. The TCK107AG,LF is a functional equivalent — same pinout, same features (load discharge, slew rate control), same load voltage range. The two order codes are cross-source alternatives for the same BOM position."},{"question":"What load voltage range does TCK108AG,LF support?","answer":"The load voltage range is 1.1V to 5.5V, covering common digital rails from 1.2V core supplies up to 5V I/O and peripheral power."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/toshiba/TCK108AGLF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/toshiba/TCK108AGLF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}