SMAJ120AAlternatives & Equivalent Parts
About SMAJ120A
SMAJ120A is a TVS Diode (Uni-directional) component manufactured by LITTELFUSE. It comes in a Diodes Moulded 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 | SMAJ120ASource | MBRS330T3G | SMBJ30CA | AT89S52-24AUR |
|---|---|---|---|---|
| Manufacturer | LITTELFUSE | ON Semiconductor | STMicroelectronics | Microchip |
| Package Type | Diodes Moulded | Diodes Moulded | Other | Quad Flat Packages |
| Pin Count | 2 | 2 | 2 | 44 |
| Temperature Range | -65.0°C ~ 150.0°C | -65.0°C ~ 150.0°C | -55.0°C ~ 150.0°C | -40.0°C ~ 85.0°C |
| Price | $0.0011 | $0.1755 | $0.0370 | $1.7400 |
| Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||
| Pbfree Code | No | Yes | — | Yes |
| YTEOL | 6.48 | 6 | 7.26 | 14 |
| Breakdown Voltage-Max | 147 V | — | — | — |
| Breakdown Voltage-Min | 133 V | 30 V | 33.3 V | — |
| Breakdown Voltage-Nom | 140 V | — | 35.1 V | — |
| Clamping Voltage-Max | 193 V | — | 48.4 V | — |
| Configuration | SINGLE, 1 CHANNEL | SINGLE | SINGLE, 1 CHANNEL | — |
| Diode Element Material | SILICON | SILICON | SILICON | — |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE | RECTIFIER DIODE | TRANS VOLTAGE SUPPRESSOR DIODE | — |
| Forward Voltage-Max (VF) | 3.5 V | 0.5 V | — | — |
| JEDEC-95 Code | DO-214AC | DO-214AB | DO-214AA | — |
| JESD-30 Code | R-PDSO-C2 | R-PDSO-C2 | R-PDSO-C2 | S-PQFP-G44 |
| Non-rep Peak Rev Power Dis-Max | 400 W | — | 600 W | — |
| Number of Elements | 1 | 1 | 1 | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | SQUARE |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 | — |
| Polarity | UNIDIRECTIONAL | — | BIDIRECTIONAL | — |
| Power Dissipation-Max | 3.3 W | — | — | — |
| Qualification Status | Not Qualified | Not Qualified | — | — |
| Reference Standard | IEC-61000-4-2; UL RECOGNIZED | — | IEC-61000-4-2, 4-4, 4-5; MIL-STD-750 | — |
| Rep Pk Reverse Voltage-Max | 120 V | 30 V | 30 V | — |
| Reverse Current-Max | 1 µA | 2000 µA | 0.2 µA | — |
| Reverse Test Voltage | 120 V | 30 V | 30 V | — |
| Surface Mount | YES | YES | YES | YES |
| Technology | AVALANCHE | SCHOTTKY | AVALANCHE | CMOS |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) - annealed | Matte Tin (Sn) - annealed | Matte Tin (Sn) |
| Terminal Form | C BEND | C BEND | C BEND | GULL WING |
| Terminal Position | DUAL | DUAL | DUAL | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 | — |
| Manufacturer Package Code | — | 403AC | — | TQFP-44 |
| Additional Feature | — | FREE WHEELING DIODE | — | — |
| Application | — | POWER | — | — |
| JESD-609 Code | — | e3 | e3 | e3 |
| Non-rep Pk Forward Current-Max | — | 80 A | — | — |
| Number of Phases | — | 1 | — | — |
| Output Current-Max | — | 4 A | — | — |
| ## SMBJ30CA Alternates Showing results | — | — | Image | — |
| Factory Lead Time | — | — | — | 9 Weeks |
| Has ADC | — | — | — | NO |
| Address Bus Width | — | — | — | 16 |
| Bit Size | — | — | — | 8 |
| Boundary Scan | — | — | — | NO |
| Clock Frequency-Max | — | — | — | 33 MHz |
| DAC Channels | — | — | — | NO |
| DMA Channels | — | — | — | NO |
| External Data Bus Width | — | — | — | 8 |
| Format | — | — | — | FIXED POINT |
| Integrated Cache | — | — | — | NO |
| Low Power Mode | — | — | — | YES |
| Number of External Interrupts | — | — | — | 2 |
| Number of I/O Lines | — | — | — | 32 |
| Number of Serial I/Os | — | — | — | 1 |
| Number of Timers | — | — | — | 3 |
| On Chip Data RAM Width | — | — | — | 8 |
| On Chip Program ROM Width | — | — | — | 8 |
| PWM Channels | — | — | — | NO |
| Package Equivalence Code | — | — | — | TQFP44,.39SQ,31 |
| RAM (bytes) | — | — | — | 256 |
| ROM (words) | — | — | — | 8192 |
| ROM Programmability | — | — | — | FLASH |
| Speed | — | — | — | 33 MHz |
| Supply Current-Max | — | — | — | 25 mA |
| Supply Voltage-Max | — | — | — | 5.5 V |
| Supply Voltage-Min | — | — | — | 5 V |
| Supply Voltage-Nom | — | — | — | 5 V |
| Temperature Grade | — | — | — | INDUSTRIAL |
| Terminal Pitch | — | — | — | 0.8 mm |
| uPs/uCs/Peripheral ICs Type | — | — | — | MICROCONTROLLER |
| ## AT89S52-24AUR 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 SMAJ120A — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for SMAJ120A 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 SMAJ120A 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 SMAJ120A?
Known equivalents for SMAJ120A include MBRS330T3G, SMBJ30CA, AT89S52-24AUR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SMAJ120A?
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 SMAJ120A 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.