BD435Alternatives & Equivalent Parts
About BD435
BD435 is a Transistor BJT NPN component manufactured by STMicroelectronics. It comes in a Transistor Outline, Vertical 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 | BD435Source | BDX53B | ECQE4104JF | BD437 |
|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | Panasonic | STMicroelectronics |
| Package Type | Transistor Outline, Vertical | Transistor Outline, Vertical | Other | Other |
| Pin Count | 3 | 3 | 2 | 3 |
| Temperature Range | ~ 150.0°C | ~ 150.0°C | -40.0°C ~ 105.0°C | ~ 150.0°C |
| Price | $0.0830 | $0.2450 | $0.1320 | $0.0750 |
| Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||
| Pbfree Code | Yes | — | Yes | — |
| YTEOL | 0 | 9 | 6 | 9 |
| Case Connection | ISOLATED | — | — | ISOLATED |
| Collector Current-Max (IC) | 4 A | 8 A | — | 4 A |
| Collector-Emitter Voltage-Max | 32 V | 80 V | — | 45 V |
| Configuration | SINGLE | DARLINGTON WITH BUILT-IN DIODE AND RESISTOR | — | SINGLE |
| DC Current Gain-Min (hFE) | 50 | 750 | — | 40 |
| JEDEC-95 Code | TO-126 | TO-220AB | — | TO-126 |
| JESD-30 Code | R-PSFM-T3 | R-PSFM-T3 | — | R-PSFM-T3 |
| JESD-609 Code | e3 | e3 | e3 | e3 |
| Number of Elements | 1 | 1 | — | 1 |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR PACKAGE | RECTANGULAR |
| Package Style | FLANGE MOUNT | FLANGE MOUNT | Radial | FLANGE MOUNT |
| Polarity/Channel Type | NPN | NPN | — | NPN |
| Power Dissipation Ambient-Max | 36 W | 60 W | — | 36 W |
| Power Dissipation-Max (Abs) | 36 W | 60 W | — | 36 W |
| Qualification Status | Not Qualified | Not Qualified | — | Not Qualified |
| Surface Mount | NO | NO | NO | NO |
| Terminal Finish | MATTE TIN | Matte Tin (Sn) | Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | — | THROUGH-HOLE |
| Terminal Position | SINGLE | SINGLE | — | SINGLE |
| Transistor Application | SWITCHING | SWITCHING | — | SWITCHING |
| Transistor Element Material | SILICON | SILICON | — | SILICON |
| Transition Frequency-Nom (fT) | 3 MHz | 20 MHz | — | 3 MHz |
| VCEsat-Max | 0.5 V | 2 V | — | 0.6 V |
| ## BD435 Alternates Showing results | Image | — | — | — |
| Factory Lead Time | — | 14 Weeks | — | — |
| Peak Reflow Temperature (Cel) | — | NOT SPECIFIED | — | NOT SPECIFIED |
| Time@Peak Reflow Temperature-Max (s) | — | NOT SPECIFIED | — | NOT SPECIFIED |
| ## BDX53B Alternates Showing results | — | Image | — | — |
| Reach Compliance Code | — | — | Compliant | — |
| Additional Feature | — | — | FLAME PROOF | — |
| Capacitance | — | — | 100 µF | — |
| Capacitor Type | — | — | FILM CAPACITOR | — |
| Dielectric Material | — | — | POLYESTER | — |
| Height | — | — | 12 mm | — |
| Mounting Feature | — | — | THROUGH HOLE MOUNT | — |
| Negative Tolerance | — | — | 5% | — |
| Packing Method | — | — | BULK | — |
| Positive Tolerance | — | — | 5% | — |
| Rated (DC) Voltage (URdc) | — | — | 400 V | — |
| Terminal Pitch | — | — | 10 mm | — |
| Terminal Shape | — | — | WIRE | — |
| Date Of Intro | — | — | — | 1980-01-04 |
| ## BD437 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 3 alternatives for BD435 — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for BD435 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 BD435 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 BD435?
Known equivalents for BD435 include BDX53B, ECQE4104JF, BD437. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of BD435?
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 BD435 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.