{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DTB123YCHZGT116","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"DTB123YCHZGT116","canonicalUrl":"https://icboms.com/rohm/DTB123YCHZGT116","factsUrl":"https://icboms.com/api/mcp/products/DTB123YCHZGT116","rawCanonicalId":null},"summary":{"shortDescription":"ROHM DTB123YCHZGT116 PNP pre-biased digital transistor, 500 mA collector current, 200 MHz transition frequency, built-in 2.2 kΩ base resistor and 10 kΩ emitter-base resistor, SOT-23-3 package, AEC-Q101 qualified.","salesMarkdown":"## Pre-biased PNP for automotive and industrial loads The ROHM DTB123YCHZGT116 is a PNP pre-biased digital transistor in a SOT-23-3 package, rated for 500 mA continuous collector current and 200 mW power dissipation. It integrates a 2.2 kΩ base resistor (R1) and a 10 kΩ emitter-base resistor (R2), which eliminates the need for two external bias resistors on the board. The part is qualified to AEC-Q101, making it suitable for automotive under-hood and chassis-domain applications, as well as industrial controls and power management circuits where temperature cycling and vibration are factors. ## Built-in bias resistors — what they save on the BOM With R1 at 2.2 kΩ and R2 at 10 kΩ, this transistor is self-biased for typical switching applications. The internal divider sets the base drive so that a logic-level signal from a microcontroller or sensor can switch the transistor on and off without additional passives. For a repair bench, that means one less component to check when a board comes in with a dead output driver — the scorch mark on the SOT-23 tells you the transistor went, not a missing resistor. ## Switching performance and drive capability The 200 MHz transition frequency supports switching into the low-MHz range, adequate for relay drivers, solenoid valves, indicator LEDs, and small DC motor pre-drivers. Vce saturation is 300 mV maximum at 2.5 mA base current and 50 mA collector current, so the voltage drop across the transistor stays low even when driving moderate loads. Minimum DC current gain of 56 at 50 mA, 5 V ensures consistent drive strength across production lots. ## Package and footprint Housed in a standard SOT-23-3 (SC-59, TO-236-3) surface-mount package with the SST3 supplier code. The footprint is shared across hundreds of small-signal transistors, so a board layout designed for a generic SOT-23 PNP will accept this part without modification.","metaTitle":"DTB123YCHZGT116 PNP Pre-Biased Transistor, 500 mA, AEC-Q101","metaDescription":"ROHM DTB123YCHZGT116 PNP digital transistor with built-in 2.2 kΩ base and 10 kΩ emitter resistors. 500 mA Ic, 200 mW, SOT-23-3. AEC-Q101 qualified.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q101","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Series":"Automotive, AEC-Q101","Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"200 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Transistor Type":"PNP - Pre-Biased","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"2.2 kOhms","Frequency - Transition":"200 MHz","Supplier Device Package":"SST3","Resistor - Emitter Base (R2)":"10 kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 2.5mA, 50mA","Current - Collector (Ic) (Max)":"500 mA","DC Current Gain (hFE) (Min) @ Ic, Vce":"56 @ 50mA, 5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.25","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.25000","currency":"USD"},{"qty":10,"price":"$0.20500","currency":"USD"},{"qty":100,"price":"$0.10880","currency":"USD"},{"qty":500,"price":"$0.07156","currency":"USD"},{"qty":1000,"price":"$0.04865","currency":"USD"},{"qty":3000,"price":"$0.04388","currency":"USD"},{"qty":6000,"price":"$0.03816","currency":"USD"},{"qty":15000,"price":"$0.03244","currency":"USD"},{"qty":30000,"price":"$0.03053","currency":"USD"},{"qty":75000,"price":"$0.02862","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a2f16d5edc7af48960f9e290f5b1f3f0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is DTB123YCHZGT116 AEC-Q101 qualified?","answer":"Yes, the DTB123YCHZGT116 is listed under the Automotive, AEC-Q101 series, meaning it has passed the automotive-grade stress tests for temperature cycling, humidity, and ESD robustness required for under-hood and chassis applications."},{"question":"What are the built-in resistor values for DTB123YCHZGT116?","answer":"The base resistor (R1) is 2.2 kΩ and the emitter-base resistor (R2) is 10 kΩ. These values set the turn-on threshold and base current for switching applications without external bias components."},{"question":"What is the equivalent of DTB123YCHZGT116?","answer":"Several manufacturers offer pin-compatible PNP pre-biased transistors in SOT-23 with similar resistor ratios, such as the DTA series from Diodes Inc or the RN series from Nexperia. Verify the R1/R2 values and collector current rating match your design before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/DTB123YCHZGT116","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/DTB123YCHZGT116 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}