SA20AAlternatives & Equivalent Parts
About SA20A
SA20A is a TVS Diode (Uni-directional) component manufactured by LITTELFUSE. It comes in a Diodes, Axial Diameter Horizontal Mounting 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 | SA20ASource | LM3478MM/NOPB | ADUM3153BRSZ | SI8651ED-B-IS | UC3843AN |
|---|---|---|---|---|---|
| Manufacturer | LITTELFUSE | Texas Instruments | Analog Devices | Silicon Labs | Texas Instruments |
| Package Type | Diodes, Axial Diameter Horizontal Mounting | Small Outline Packages | Small Outline Packages | Small Outline Packages | Dual-In-Line Packages |
| Pin Count | 2 | 8 | 20 | 16 | 8 |
| Temperature Range | -55.0°C ~ 175.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | — | ~ 70.0°C |
| Price | $0.1024 | $1.0125 | $5.4872 | $2.8990 | $0.3403 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | — | ACTIVE |
| Electrical Parameters | |||||
| Pbfree Code | No | Yes | No | — | Yes |
| YTEOL | 6.06 | 15 | 10 | — | 15 |
| Breakdown Voltage-Max | 24.5 V | — | — | — | — |
| Breakdown Voltage-Min | 22.2 V | — | — | — | — |
| Case Connection | ISOLATED | — | — | — | — |
| Clamping Voltage-Max | 32.4 V | — | — | — | — |
| Configuration | SINGLE | — | — | — | — |
| Diode Element Material | SILICON | — | — | — | — |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE | — | — | — | — |
| JEDEC-95 Code | DO-15 | — | — | — | — |
| JESD-30 Code | O-PALF-W2 | S-PDSO-G8 | R-PDSO-G20 | — | R-PDIP-T8 |
| JESD-609 Code | e3 | e3 | e3 | — | e4 |
| Non-rep Peak Rev Power Dis-Max | 500 W | — | — | — | — |
| Number of Elements | 1 | — | — | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY |
| Package Shape | ROUND | SQUARE | RECTANGULAR | — | RECTANGULAR |
| Package Style | LONG FORM | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH | SMALL OUTLINE, SHRINK PITCH | — | IN-LINE |
| Peak Reflow Temperature (Cel) | 265 | 260 | 260 | — | — |
| Polarity | UNIDIRECTIONAL | — | — | — | — |
| Power Dissipation-Max | 3 W | — | — | — | — |
| Qualification Status | Not Qualified | Not Qualified | — | — | Not Qualified |
| Reference Standard | UL RECOGNIZED | — | — | — | — |
| Rep Pk Reverse Voltage-Max | 20 V | — | — | — | — |
| Surface Mount | NO | YES | YES | — | NO |
| Technology | AVALANCHE | BICMOS | — | — | BIPOLAR |
| Terminal Finish | MATTE TIN | Matte Tin (Sn) | Matte Tin (Sn) | — | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | WIRE | GULL WING | GULL WING | — | THROUGH-HOLE |
| Terminal Position | AXIAL | DUAL | DUAL | — | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 10 | 30 | 30 | — | — |
| Analog IC - Other Type | — | SWITCHING CONTROLLER | ANALOG CIRCUIT | — | SWITCHING CONTROLLER |
| Control Mode | — | CURRENT-MODE | — | — | CURRENT-MODE |
| Control Technique | — | PULSE WIDTH MODULATION | — | — | PULSE WIDTH MODULATION |
| Input Voltage-Max | — | 40 V | — | — | 28 V |
| Input Voltage-Min | — | 2.97 V | — | — | 8.2 V |
| Input Voltage-Nom | — | 12 V | — | — | 15 V |
| Number of Functions | — | 1 | 1 | — | 1 |
| Number of Outputs | — | 1 | — | — | — |
| Output Current-Max | — | 10 A | — | — | 1 A |
| Output Voltage-Max | — | 500 V | — | — | 5.1 V |
| Output Voltage-Min | — | 1.26 V | — | — | 4.9 V |
| Package Equivalence Code | — | TSSOP8,.19 | — | — | DIP8,.3 |
| Supply Current-Max (Isup) | — | 3.3 mA | — | — | 25 mA |
| Switcher Configuration | — | BUCK-BOOST | — | — | BUCK-BOOST |
| Switching Frequency-Max | — | 1000 kHz | — | — | 500 kHz |
| Temperature Grade | — | AUTOMOTIVE | AUTOMOTIVE | — | COMMERCIAL |
| Terminal Pitch | — | 0.65 mm | 0.65 mm | — | 2.54 mm |
| ## LM3478MM/NOPB Alternates Showing results | — | Image | — | — | — |
| Manufacturer Package Code | — | — | RS-20 | — | — |
| Supply Voltage-Max (Vsup) | — | — | 5.5 V | — | 28 V |
| Supply Voltage-Min (Vsup) | — | — | 3 V | — | 8.4 V |
| Supply Voltage-Nom (Vsup) | — | — | 3.3 V | — | 11 V |
| Output Voltage-Nom | — | — | — | — | 5 V |
| ## UC3843AN Alternates Showing results | — | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Get one quote covering all 4 alternatives for SA20A — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for SA20A 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 SA20A 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 SA20A?
Known equivalents for SA20A include LM3478MM/NOPB, ADUM3153BRSZ, SI8651ED-B-IS. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SA20A?
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 SA20A 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.