BC557Alternatives & Equivalent Parts
About BC557
BC557 is a Undefined or Miscellaneous component manufactured by ON Semiconductor. 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 | BC557Source | BC557B | SN74LVC3G17DCUR | DR127-220-R |
|---|---|---|---|---|
| Manufacturer | ON Semiconductor | MULTICOMP | Texas Instruments | COILTRONICS |
| Package Type | Other | Transistor Outline, Vertical | Small Outline Packages | Inductors Precision Moulded |
| Pin Count | 3 | 3 | 8 | 2 |
| Temperature Range | ~ 150.0°C | — | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C |
| Price | $0.0411 | $0.0173 | $0.1918 | $0.2415 |
| Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | — | ACTIVE | TRANSFERRED |
| Electrical Parameters | ||||
| Pbfree Code | No | — | Yes | — |
| Manufacturer Package Code | 29-11 | — | — | — |
| YTEOL | 0 | — | 15 | — |
| Collector Current-Max (IC) | 0.1 A | — | — | — |
| Collector-Emitter Voltage-Max | 45 V | — | — | — |
| Configuration | SINGLE | — | — | — |
| DC Current Gain-Min (hFE) | 120 | — | — | — |
| JEDEC-95 Code | TO-92 | — | — | — |
| JESD-30 Code | O-PBCY-T3 | — | R-PDSO-G8 | — |
| JESD-609 Code | e0 | — | e3 | — |
| Number of Elements | 1 | — | — | — |
| Package Body Material | PLASTIC/EPOXY | — | PLASTIC/EPOXY | — |
| Package Shape | ROUND | — | RECTANGULAR | — |
| Package Style | CYLINDRICAL | — | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH | SMT |
| Peak Reflow Temperature (Cel) | 235 | — | 260 | — |
| Polarity/Channel Type | PNP | — | — | — |
| Power Dissipation-Max (Abs) | 0.625 W | — | — | — |
| Qualification Status | Not Qualified | — | Not Qualified | — |
| Surface Mount | NO | — | YES | YES |
| Terminal Finish | TIN LEAD | — | Tin (Sn) | — |
| Terminal Form | THROUGH-HOLE | — | GULL WING | — |
| Terminal Position | BOTTOM | — | DUAL | — |
| Transistor Application | AMPLIFIER | — | — | — |
| Transistor Element Material | SILICON | — | — | — |
| Transition Frequency-Nom (fT) | 320 MHz | — | — | — |
| Family | — | — | LVC/LCX/Z | — |
| Load Capacitance (CL) | — | — | 50 pF | — |
| Logic IC Type | — | — | BUFFER | — |
| Max I(ol) | — | — | 0.032 A | — |
| Number of Functions | — | — | 3 | 1 |
| Number of Inputs | — | — | 1 | — |
| Package Equivalence Code | — | — | TSSOP8,.12,20 | — |
| Packing Method | — | — | TR | TR, 13 Inch |
| Power Supply Current-Max (ICC) | — | — | 0.01 mA | — |
| Prop. Delay@Nom-Sup | — | — | 5.4 ns | — |
| Propagation Delay (tpd) | — | — | 9.2 ns | — |
| Schmitt Trigger | — | — | YES | — |
| Supply Voltage-Max (Vsup) | — | — | 5.5 V | — |
| Supply Voltage-Min (Vsup) | — | — | 1.65 V | — |
| Supply Voltage-Nom (Vsup) | — | — | 3.3 V | — |
| Technology | — | — | CMOS | — |
| Temperature Grade | — | — | AUTOMOTIVE | — |
| Terminal Pitch | — | — | 0.5 mm | — |
| Time@Peak Reflow Temperature-Max (s) | — | — | 30 | — |
| ## SN74LVC3G17DCUR Alternates Showing results | — | — | Image | — |
| Case/Size Code | — | — | — | 4949 |
| Construction | — | — | — | Rectangular |
| Core Material | — | — | — | FERRITE |
| DC Resistance | — | — | — | 0.0391 Ω |
| Inductance-Nom (L) | — | — | — | 22 µH |
| Inductor Application | — | — | — | POWER INDUCTOR |
| Inductor Type | — | — | — | GENERAL PURPOSE INDUCTOR |
| Package Height | — | — | — | 8 mm |
| Package Length | — | — | — | 12.5 mm |
| Package Width | — | — | — | 12.5 mm |
| Rated Current-Max | — | — | — | 4 A |
| Shape/Size Description | — | — | — | RECTANGULAR PACKAGE |
| Shielded | — | — | — | YES |
| Terminal Placement | — | — | — | DUAL ENDED |
| Terminal Shape | — | — | — | WRAPAROUND |
| Test Frequency | — | — | — | 0.1 MHz |
| Tolerance | — | — | — | 20% |
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 BC557 — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for BC557 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 BC557 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 BC557?
Known equivalents for BC557 include BC557B, SN74LVC3G17DCUR, DR127-220-R. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of BC557?
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 BC557 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.