SMAJ20AAlternatives & Equivalent Parts
About SMAJ20A
SMAJ20A is a TVS Diode (Uni-directional) component manufactured by Taiwan Semiconductor. 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 | SMAJ20ASource | 103185-2 | 103185-3 | SMAJ28CA-TR | SMAJ6.5CA-TR |
|---|---|---|---|---|---|
| Manufacturer | Taiwan Semiconductor | TE Connectivity | TE Connectivity | STMicroelectronics | STMicroelectronics |
| Package Type | Diodes Moulded | Header, Vertical | — | Diodes Moulded Non Polarised | Diodes Moulded Non Polarised |
| Pin Count | 2 | 2 | — | 2 | 2 |
| Temperature Range | -55.0°C ~ 150.0°C | -65.0°C ~ 105.0°C | -65.0°C ~ 105.0°C | -55.0°C ~ 150.0°C | -55.0°C ~ 150.0°C |
| Price | $0.0230 | $0.0438 | $0.0408 | $0.0857 | $0.0675 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | OBSOLETE | OBSOLETE | ACTIVE | ACTIVE |
| Electrical Parameters | |||||
| Factory Lead Time | 19 Weeks | — | 18 Weeks | 13 Weeks | 13 Weeks |
| YTEOL | 6 | 0 | 0 | 6.28 | 6.28 |
| Additional Feature | EXCELLENT CLAMPING CAPABILITY | AMPMODU | AMPMODU | MOS COMPATIBLE | MOS COMPATIBLE |
| Breakdown Voltage-Max | 24.5 V | — | — | — | — |
| Breakdown Voltage-Min | 22.2 V | — | — | 31.1 V | 7.2 V |
| Breakdown Voltage-Nom | 23.35 V | — | — | 32.7 V | 7.58 V |
| Clamping Voltage-Max | 32.4 V | — | — | 45.4 V | 11.2 V |
| Configuration | SINGLE | — | — | SINGLE, 1 CHANNEL | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON | — | — | SILICON | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE | — | — | TRANS VOLTAGE SUPPRESSOR DIODE | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AC | — | — | DO-214AC | DO-214AC |
| JESD-30 Code | R-PDSO-C2 | — | — | R-PDSO-C2 | R-PDSO-C2 |
| JESD-609 Code | e3 | e0 | e0 | e3 | e3 |
| Non-rep Peak Rev Power Dis-Max | 400 W | — | — | 400 W | 400 W |
| Number of Elements | 1 | — | — | 1 | 1 |
| Package Body Material | PLASTIC/EPOXY | — | — | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | — | — | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | — | — | SMALL OUTLINE | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 | — | — | 260 | 260 |
| Polarity | UNIDIRECTIONAL | — | — | BIDIRECTIONAL | BIDIRECTIONAL |
| Power Dissipation-Max | 1 W | — | — | 3.3 W | 3.3 W |
| Qualification Status | Not Qualified | — | — | Not Qualified | Not Qualified |
| Reference Standard | UL RECOGNIZED | CSA, LR, U | CSA, LR, U | IEC-61000-4-2, 4-4, 4-5; MIL-STD-750 | IEC-61000-4-2, 4-4, 4-5; MIL-STD-750 |
| Rep Pk Reverse Voltage-Max | 20 V | — | — | 28 V | 6.5 V |
| Surface Mount | YES | — | — | YES | YES |
| Technology | AVALANCHE | — | — | AVALANCHE | AVALANCHE |
| Terminal Finish | MATTE TIN | — | — | Matte Tin (Sn) | Matte Tin (Sn) - annealed |
| Terminal Form | C BEND | — | — | C BEND | C BEND |
| Terminal Position | DUAL | — | — | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | — | — | 30 | 30 |
| Pbfree Code | — | No | No | — | — |
| Body Breadth | — | 0.092 inch | 0.092 inch | — | — |
| Body Depth | — | 0.09 inch | 0.09 inch | — | — |
| Body Length | — | 0.184 inch | 0.284 inch | — | — |
| Body/Shell Style | — | RECEPTACLE | RECEPTACLE | — | — |
| Connector Type | — | BOARD CONNECTOR | BOARD CONNECTOR | — | — |
| Contact Finish Mating | — | NOT SPECIFIED | NOT SPECIFIED | — | — |
| Contact Finish Termination | — | TIN LEAD OVER NICKEL | Matte Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier | — | — |
| Contact Gender | — | MALE | MALE | — | — |
| Contact Material | — | PHOSPHOR BRONZE | PHOSPHOR BRONZE | — | — |
| Contact Pattern | — | RECTANGULAR | RECTANGULAR | — | — |
| Contact Style | — | SQ PIN-SKT | SQ PIN-SKT | — | — |
| DIN Conformance | — | NO | NO | — | — |
| EMI Shielded | — | NO | NO | — | — |
| Empty Shell | — | NO | NO | — | — |
| Filter Feature | — | NO | NO | — | — |
| IEC Conformance | — | NO | NO | — | — |
| Insulation Resistance | — | 5000000000 Ω | 5000000000 Ω | — | — |
| Insulator Color | — | BLACK | BLACK | — | — |
| Insulator Material | — | POLYETHYLENE | POLYETHYLENE | — | — |
| MIL Conformance | — | NO | NO | — | — |
| Mains Connector Rating | — | 3A | 3A | — | — |
| Mating Contact Pitch | — | 0.1 inch | 0.1 inch | — | — |
| Mating Information | — | MULTIPLE MATING PARTS AVAILABLE | MULTIPLE MATING PARTS AVAILABLE | — | — |
| Mixed Contacts | — | NO | NO | — | — |
| Mounting Style | — | STRAIGHT | STRAIGHT | — | — |
| Mounting Type | — | BOARD | BOARD | — | — |
| Number Of Connectors | — | ONE | ONE | — | — |
| Number Of PCB Rows | — | 1 | 1 | — | — |
| Number of Ports | — | 1 | 1 | — | — |
| Number of Rows Loaded | — | 1 | 1 | — | — |
| Option | — | GENERAL PURPOSE | GENERAL PURPOSE | — | — |
| PCB Contact Pattern | — | RECTANGULAR | RECTANGULAR | — | — |
| Panel Mount | — | NO | NO | — | — |
| Plating Thickness | — | 15u inch | 15u inch | — | — |
| Rated Current (Signal) | — | 3 A | 3 A | — | — |
| Terminal Length | — | 0.12 inch | 0.12 inch | — | — |
| Terminal Pitch | — | 2.54 mm | 2.54 mm | — | — |
| Termination Type | — | SOLDER | SOLDER | — | — |
| Total Number of Contacts | — | 2 | 3 | — | — |
| UL Flammability Code | — | 94V-0 | 94V-0 | — | — |
| Reach Compliance Code | — | — | — | Not Compliant | Not Compliant |
| Reverse Current-Max | — | — | — | 2 µA | 20 µA |
| Reverse Test Voltage | — | — | — | 28 V | 6.5 V |
| ## SMAJ28CA-TR 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 4 alternatives for SMAJ20A — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for SMAJ20A 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 SMAJ20A 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 SMAJ20A?
Known equivalents for SMAJ20A include 103185-2, 103185-3, SMAJ28CA-TR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SMAJ20A?
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 SMAJ20A 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.