MMBT3904Alternatives & Equivalent Parts
About MMBT3904
MMBT3904 is a Transistor BJT NPN component manufactured by ON Semiconductor. It comes in a SOT23 (3-Pin) 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 | MMBT3904Source | SRP4020TA-2R2M |
|---|---|---|
| Manufacturer | ON Semiconductor | Bourns |
| Package Type | SOT23 (3-Pin) | Inductors Chip |
| Pin Count | 3 | 2 |
| Temperature Range | -55.0°C ~ 150.0°C | -55.0°C ~ 150.0°C |
| Price | $0.0045 | $0.4288 |
| Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | ACTIVE |
| Electrical Parameters | ||
| Pbfree Code | Yes | — |
| Manufacturer Package Code | 318BM | — |
| YTEOL | 0 | 8 |
| Case Connection | COLLECTOR | — |
| Collector Current-Max (IC) | 0.2 A | — |
| Collector-Emitter Voltage-Max | 40 V | — |
| Configuration | SINGLE | — |
| DC Current Gain-Min (hFE) | 30 | — |
| JEDEC-95 Code | TO-236AB | — |
| JESD-30 Code | R-PDSO-G3 | — |
| JESD-609 Code | e3 | e3 |
| Number of Elements | 1 | — |
| Package Body Material | PLASTIC/EPOXY | — |
| Package Shape | RECTANGULAR | — |
| Package Style | SMALL OUTLINE | SMT |
| Peak Reflow Temperature (Cel) | 260 | — |
| Polarity/Channel Type | NPN | — |
| Power Dissipation-Max (Abs) | 0.225 W | — |
| Qualification Status | Not Qualified | — |
| Surface Mount | YES | YES |
| Terminal Finish | TIN | Tin (Sn) |
| Terminal Form | GULL WING | — |
| Terminal Position | DUAL | — |
| Time@Peak Reflow Temperature-Max (s) | 30 | — |
| Transistor Application | SWITCHING | — |
| Transistor Element Material | SILICON | — |
| Transition Frequency-Nom (fT) | 300 MHz | — |
| Turn-off Time-Max (toff) | 250 ns | — |
| Turn-on Time-Max (ton) | 70 ns | — |
| Factory Lead Time | — | 16 Weeks |
| Case/Size Code | — | 1816 |
| Construction | — | Rectangular |
| Core Material | — | CARBONYL POWDER |
| DC Resistance | — | 0.061 Ω |
| Inductance-Nom (L) | — | 2.2 µH |
| Inductor Application | — | POWER INDUCTOR |
| Inductor Type | — | GENERAL PURPOSE INDUCTOR |
| Number of Functions | — | 1 |
| Package Height | — | 1.8 mm |
| Package Length | — | 4.45 mm |
| Package Width | — | 4.06 mm |
| Packing Method | — | TR, Embossed , 13 Inch |
| Quality Factor-Min (at L-nom) | — | 10 |
| Rated Current-Max | — | 4 A |
| Reference Standard | — | AEC-Q200 |
| Self Resonance Frequency | — | 45 MHz |
| 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.
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Why Look for Alternatives?
Finding alternatives for MMBT3904 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 MMBT3904 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 MMBT3904?
Known equivalents for MMBT3904 include SRP4020TA-2R2M. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of MMBT3904?
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 MMBT3904 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.