BD677AAlternatives & Equivalent Parts
About BD677A
BD677A is a Transistor Darlington Pair component manufactured by STMicroelectronics. It comes in a Other package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | BD677ASource | BD677 | BD679A | BD679 |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package Type | Other | Transistor Outline, Vertical | Transistor Outline, Vertical | Transistor Outline, Vertical |
| Pin Count | 3 | 3 | 3 | 3 |
| Temperature Range | ~ 150.0°C | ~ 150.0°C | ~ 150.0°C | ~ 150.0°C |
| Price | $0.1770 | $0.1198 | $0.1920 | $0.1310 |
| Electrical Parameters | ||||
| Factory Lead Time | 14 Weeks | 14 Weeks | 14 Weeks | 14 Weeks |
| YTEOL | 9 | 9 | 9 | 9 |
| Case Connection | ISOLATED | ISOLATED | ISOLATED | ISOLATED |
| Collector Current-Max (IC) | 4 A | 4 A | 4 A | 4 A |
| Collector-Emitter Voltage-Max | 60 V | 60 V | 80 V | 80 V |
| Configuration | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR |
| DC Current Gain-Min (hFE) | 750 | 750 | 750 | 750 |
| JEDEC-95 Code | TO-126 | TO-126 | TO-126 | TO-126 |
| JESD-30 Code | R-PSFM-T3 | R-PSFM-T3 | R-PSFM-T3 | R-PSFM-T3 |
| JESD-609 Code | e3 | e3 | e3 | e3 |
| Number of Elements | 1 | 1 | 1 | 1 |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | FLANGE MOUNT | FLANGE MOUNT | FLANGE MOUNT | FLANGE MOUNT |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED |
| Polarity/Channel Type | NPN | NPN | NPN | NPN |
| Power Dissipation Ambient-Max | 40 W | 40 W | 40 W | 40 W |
| Power Dissipation-Max (Abs) | 40 W | 40 W | 40 W | 40 W |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| Surface Mount | NO | NO | NO | NO |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE |
| Terminal Position | SINGLE | SINGLE | SINGLE | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED |
| Transistor Application | SWITCHING | SWITCHING | SWITCHING | SWITCHING |
| Transistor Element Material | SILICON | SILICON | SILICON | SILICON |
| Transition Frequency-Nom (fT) | 10 MHz | 10 MHz | 10 MHz | 10 MHz |
| VCEsat-Max | 2.8 V | 2.5 V | 2.8 V | 2.5 V |
| ## BD677 Alternates Showing results | — | Image | — | — |
| ## BD679 Alternates Showing results | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
Why Look for Alternatives?
Finding alternatives for BD677A 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 BD677A 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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Request Alternatives for BD677AFAQ
What is equivalent to BD677A?
Known equivalents for BD677A include BD677, BD679A, BD679. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of BD677A?
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 BD677A 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.