3557-20Alternatives & Equivalent Parts
About 3557-20
3557-20 is a Undefined or Miscellaneous component manufactured by Keystone Electronics. It comes in a Other 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 | 3557-20Source | ECMF4-2450A60N10 | STM32F446RCT6 | ADA4941-1YRZ | 640454-5 | 640445-3 |
|---|---|---|---|---|---|---|
| Manufacturer | Keystone Electronics | STMicroelectronics | STMicroelectronics | Analog Devices | TE Connectivity | TE Connectivity |
| Package Type | Other | Other | Quad Flat Packages | Small Outline Packages | Header, Shrouded - Straight PTH Box | Header, Vertical |
| Pin Count | 4 | 10 | 64 | 8 | 5 | 3 |
| Temperature Range | — | -55.0°C ~ 125.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 125.0°C | -55.0°C ~ 105.0°C | ~ 75.0°C |
| Price | $0.4998 | $0.2306 | $3.7521 | $3.2800 | $0.1332 | $0.0614 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | — | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||
| Factory Lead Time | — | 13 Weeks | 15 Weeks | — | — | — |
| YTEOL | — | 6.79 | 9 | 10 | 9.1 | 7.3 |
| Approvals | — | IEC | — | — | — | — |
| Filter Type | — | DATA LINE FILTER | — | — | — | — |
| Height | — | 0.5 mm | — | — | — | — |
| JESD-609 Code | — | e4 | e3 | e3 | e3 | — |
| Mounting Type | — | SURFACE MOUNT | — | — | BOARD | BOARD |
| Number of Functions | — | 4 | — | 1 | — | — |
| Packing Method | — | TR | — | — | — | — |
| Terminal Finish | — | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) - annealed | Matte Tin (Sn) | — | — |
| Has ADC | — | — | YES | — | — | — |
| Address Bus Width | — | — | 24 | — | — | — |
| Bit Size | — | — | 32 | — | — | — |
| CPU Family | — | — | CORTEX-M4F | — | — | — |
| Clock Frequency-Max | — | — | 16 MHz | — | — | — |
| DMA Channels | — | — | YES | — | — | — |
| External Data Bus Width | — | — | 32 | — | — | — |
| JESD-30 Code | — | — | S-PQFP-G64 | R-PDSO-G8 | — | — |
| Number of I/O Lines | — | — | 50 | — | — | — |
| On Chip Program ROM Width | — | — | 8 | — | — | — |
| PWM Channels | — | — | YES | — | — | — |
| Package Body Material | — | — | PLASTIC/EPOXY | PLASTIC/EPOXY | — | — |
| Package Equivalence Code | — | — | QFP64,.47SQ,20 | — | — | — |
| Package Shape | — | — | SQUARE | RECTANGULAR | — | — |
| Package Style | — | — | FLATPACK | SMALL OUTLINE | — | — |
| Peak Reflow Temperature (Cel) | — | — | 260 | 260 | — | — |
| Qualification Status | — | — | Not Qualified | Not Qualified | — | — |
| RAM (bytes) | — | — | 131072 | — | — | — |
| ROM (words) | — | — | 262144 | — | — | — |
| ROM Programmability | — | — | FLASH | — | — | — |
| Speed | — | — | 180 MHz | — | — | — |
| Supply Current-Max | — | — | 115 mA | — | — | — |
| Supply Voltage-Max | — | — | 3.6 V | 12 V | — | — |
| Supply Voltage-Min | — | — | 1.7 V | 2.7 V | — | — |
| Supply Voltage-Nom | — | — | 3.3 V | 3 V | — | — |
| Surface Mount | — | — | YES | YES | — | — |
| Technology | — | — | CMOS | — | — | — |
| Temperature Grade | — | — | INDUSTRIAL | AUTOMOTIVE | — | — |
| Terminal Form | — | — | GULL WING | GULL WING | — | — |
| Terminal Pitch | — | — | 0.5 mm | 1.27 mm | 2.54 mm | 3.96 mm |
| Terminal Position | — | — | QUAD | DUAL | — | — |
| uPs/uCs/Peripheral ICs Type | — | — | MICROCONTROLLER, RISC | — | — | — |
| ## STM32F446RCT6 Alternates Showing results | — | — | Image | — | — | — |
| Pbfree Code | — | — | — | No | Yes | — |
| Manufacturer Package Code | — | — | — | R-8 | — | — |
| Differential Output | — | — | — | YES | — | — |
| Driver Number of Bits | — | — | — | 1 | — | — |
| Input Characteristics | — | — | — | DIFFERENTIAL | — | — |
| Interface IC Type | — | — | — | LINE DRIVER | — | — |
| Interface Standard | — | — | — | GENERAL PURPOSE | — | — |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | 30 | — | — |
| Reach Compliance Code | — | — | — | — | Compliant | — |
| Additional Feature | — | — | — | — | POLARIZED | — |
| Body Breadth | — | — | — | — | 0.225 inch | 0.355 inch |
| Body Depth | — | — | — | — | 0.305 inch | 0.128 inch |
| Body Length | — | — | — | — | 0.6 inch | 0.423 inch |
| Body/Shell Style | — | — | — | — | RECEPTACLE | RECEPTACLE |
| Connector Type | — | — | — | — | BOARD CONNECTOR | BOARD CONNECTOR |
| Contact Finish Mating | — | — | — | — | NOT APPLICABLE | NOT APPLICABLE |
| Contact Finish Termination | — | — | — | — | Tin (Sn) | — |
| Contact Gender | — | — | — | — | MALE | MALE |
| Contact Material | — | — | — | — | NOT APPLICABLE | NOT APPLICABLE |
| Contact Pattern | — | — | — | — | RECTANGULAR | RECTANGULAR |
| Contact Resistance | — | — | — | — | 5 mΩ | — |
| Contact Style | — | — | — | — | SQ PIN-SKT | SQ PIN-SKT |
| DIN Conformance | — | — | — | — | NO | NO |
| EMI Shielded | — | — | — | — | NO | — |
| Empty Shell | — | — | — | — | YES | — |
| Filter Feature | — | — | — | — | NO | NO |
| IEC Conformance | — | — | — | — | NO | NO |
| Insulation Resistance | — | — | — | — | 5000000000 Ω | — |
| Insulator Color | — | — | — | — | NATURAL | — |
| Insulator Material | — | — | — | — | GLASS FILLED POLYESTER | GLASS FILLED POLYESTER |
| MIL Conformance | — | — | — | — | NO | NO |
| Mains Connector Rating | — | — | — | — | 5A | — |
| Mating Contact Pitch | — | — | — | — | 0.1 inch | 0.156 inch |
| Mating Information | — | — | — | — | MULTIPLE MATING PARTS AVAILABLE | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | — | — | — | — | NO | NO |
| Mounting Style | — | — | — | — | STRAIGHT | STRAIGHT |
| Number Of Connectors | — | — | — | — | ONE | — |
| Number Of PCB Rows | — | — | — | — | 1 | — |
| Number of Ports | — | — | — | — | 1 | — |
| Number of Rows Loaded | — | — | — | — | 1 | 1 |
| Option | — | — | — | — | GENERAL PURPOSE | GENERAL PURPOSE |
| PCB Contact Pattern | — | — | — | — | RECTANGULAR | — |
| Panel Mount | — | — | — | — | NO | — |
| Plating Thickness | — | — | — | — | 150u inch | — |
| Polarization Key | — | — | — | — | POLARIZED | — |
| Rated Current (Signal) | — | — | — | — | 5 A | 7 A |
| Reference Standard | — | — | — | — | CSA, LR, U | — |
| Terminal Length | — | — | — | — | 0.14 inch | — |
| Termination Type | — | — | — | — | SOLDER | SOLDER |
| Total Number of Contacts | — | — | — | — | 5 | 3 |
| UL Flammability Code | — | — | — | — | 94V-0 | — |
| Dielectric Withstanding Voltage | — | — | — | — | — | 1500VAC V |
| Number of Positions 3 | — | — | — | — | — | Number of Power Positions 3 |
| Contact Features: Contact Base Material Copper Alloy | — | — | — | — | — | Contact Underplating Material Nickel |
| Contact Mating Area Plating Material Tin | — | — | — | — | — | Mating Post Length 10.16 MM |
| Mating Post Length .4 INCH | — | — | — | — | — | Contact Retention Within Housing Without |
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 5 alternatives for 3557-20 — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for 3557-20 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 3557-20 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.
Can't Find What You Need?
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FAQ
What is equivalent to 3557-20?
Known equivalents for 3557-20 include ECMF4-2450A60N10, STM32F446RCT6, ADA4941-1YRZ. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of 3557-20?
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 3557-20 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.