TIP121Alternatives & Equivalent Parts
About TIP121
TIP121 is a Transistor BJT NPN component manufactured by STMicroelectronics. It comes in a Transistor Outline, Vertical package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | TIP121Source | ATMEGA2564RFR2-ZF | LCQT-SOT23-6 | TL074 |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Microchip | ARIES | Texas Instruments |
| Package Type | Transistor Outline, Vertical | Quad Flat No-Lead | Other | Dual-In-Line Packages |
| Pin Count | 3 | 48 | 6 | 14 |
| Temperature Range | ~ 150.0°C | -40.0°C ~ 125.0°C | — | ~ 70.0°C |
| Price | $0.1789 | $5.3800 | $1.9848 | — |
| Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | OBSOLETE |
| Electrical Parameters | ||||
| Factory Lead Time | 14 Weeks | 24 Weeks | — | — |
| YTEOL | 9 | 14 | — | 0 |
| Collector Current-Max (IC) | 5 A | — | — | — |
| Collector-Emitter Voltage-Max | 80 V | — | — | — |
| Configuration | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR | — | — | — |
| DC Current Gain-Min (hFE) | 1000 | — | — | — |
| JEDEC-95 Code | TO-220AB | — | — | — |
| JESD-30 Code | R-PSFM-T3 | S-XQCC-N48 | — | R-PDIP-T14 |
| JESD-609 Code | e3 | — | — | e0 |
| Number of Elements | 1 | — | — | — |
| Package Body Material | PLASTIC/EPOXY | UNSPECIFIED | — | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | SQUARE | — | RECTANGULAR |
| Package Style | FLANGE MOUNT | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | — | IN-LINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED | — | — | — |
| Polarity/Channel Type | NPN | — | — | — |
| Power Dissipation Ambient-Max | 65 W | — | — | — |
| Power Dissipation-Max (Abs) | 65 W | — | — | — |
| Qualification Status | Not Qualified | Not Qualified | — | — |
| Surface Mount | NO | YES | — | NO |
| Terminal Finish | Matte Tin (Sn) | — | — | TIN LEAD |
| Terminal Form | THROUGH-HOLE | NO LEAD | — | THROUGH-HOLE |
| Terminal Position | SINGLE | QUAD | — | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | — | — | — |
| Transistor Application | SWITCHING | — | — | — |
| Transistor Element Material | SILICON | — | — | — |
| VCEsat-Max | 4 V | — | — | — |
| ## TIP121 Alternates Showing results | Image | — | — | — |
| Pbfree Code | — | Yes | — | — |
| Manufacturer Package Code | — | VQFN-48 | — | — |
| Has ADC | — | YES | — | — |
| Bit Size | — | 8 | — | — |
| Boundary Scan | — | YES | — | — |
| CPU Family | — | AVR RISC | — | — |
| Clock Frequency-Max | — | 16 MHz | — | — |
| DAC Channels | — | NO | — | — |
| DMA Channels | — | NO | — | — |
| Number of I/O Lines | — | 33 | — | — |
| On Chip Program ROM Width | — | 8 | — | — |
| PWM Channels | — | YES | — | — |
| Package Equivalence Code | — | LCC48,.27SQ,20 | — | DIP14,.3 |
| RAM (bytes) | — | 32768 | — | — |
| ROM (words) | — | 131072 | — | — |
| ROM Programmability | — | FLASH | — | — |
| Speed | — | 16 MHz | — | — |
| Supply Current-Max | — | 2 mA | — | 11 mA |
| Supply Voltage-Max | — | 3.6 V | — | — |
| Supply Voltage-Min | — | 1.8 V | — | — |
| Supply Voltage-Nom | — | 3 V | — | — |
| Technology | — | CMOS | — | BIPOLAR |
| Temperature Grade | — | AUTOMOTIVE | — | COMMERCIAL |
| Terminal Pitch | — | 0.5 mm | — | 2.54 mm |
| uPs/uCs/Peripheral ICs Type | — | MICROCONTROLLER, RISC | — | — |
| ## ATMEGA2564RFR2-ZF Alternates Showing results | — | Image | — | — |
| Amplifier Type | — | — | — | OPERATIONAL AMPLIFIER |
| Architecture | — | — | — | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | — | — | — | 0.008 µA |
| Bias Current-Max (IIB) @25C | — | — | — | 0.00005 µA |
| Common-mode Reject Ratio-Min | — | — | — | 70 dB |
| Common-mode Reject Ratio-Nom | — | — | — | 100 dB |
| Frequency Compensation | — | — | — | NO |
| Input Offset Voltage-Max | — | — | — | 13000 µV |
| Low-Bias | — | — | — | NO |
| Low-Offset | — | — | — | NO |
| Micropower | — | — | — | NO |
| Neg Supply Voltage Limit-Max | — | — | — | -18 V |
| Neg Supply Voltage-Nom (Vsup) | — | — | — | -15 V |
| Number of Functions | — | — | — | 4 |
| Power | — | — | — | NO |
| Programmable Power | — | — | — | NO |
| Slew Rate-Min | — | — | — | 8 V/us |
| Slew Rate-Nom | — | — | — | 13 V/us |
| Supply Voltage Limit-Max | — | — | — | 18 V |
| Supply Voltage-Nom (Vsup) | — | — | — | 15 V |
| Unity Gain BW-Nom | — | — | — | 4000 |
| Voltage Gain-Min | — | — | — | 25000 |
| Wideband | — | — | — | NO |
| ## TL074 Alternates Showing results | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 3 alternatives for TIP121 — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for TIP121 is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating TIP121 replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to TIP121?
Known equivalents for TIP121 include ATMEGA2564RFR2-ZF, LCQT-SOT23-6, TL074. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of TIP121?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify TIP121 alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.