Part Details for 2N491 by Central Semiconductor Corp
Overview of 2N491 by Central Semiconductor Corp
- Distributor Offerings: (0 listings)
- Number of FFF Equivalents: (0 replacements)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (3 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
Part Details for 2N491
2N491 CAD Models
2N491 Part Data Attributes
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2N491
Central Semiconductor Corp
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Datasheet
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2N491
Central Semiconductor Corp
Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN
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Pbfree Code | No | |
Rohs Code | No | |
Part Life Cycle Code | Obsolete | |
Ihs Manufacturer | CENTRAL SEMICONDUCTOR CORP | |
Part Package Code | TO-5 | |
Package Description | TO-5, 3 PIN | |
Pin Count | 3 | |
Reach Compliance Code | not_compliant | |
ECCN Code | EAR99 | |
Configuration | SINGLE | |
Emitter Current-Max | 70 mA | |
Inter-base Voltage-Max | 65 V | |
Intrinsic Stand-off Ratio-Max | 0.68 | |
Intrinsic Stand-off Ratio-Min | 0.56 | |
JEDEC-95 Code | TO-5 | |
JESD-30 Code | O-MBCY-W3 | |
JESD-609 Code | e0 | |
Number of Elements | 1 | |
Number of Terminals | 3 | |
Operating Temperature-Max | 140 °C | |
Operating Temperature-Min | -65 °C | |
Package Body Material | METAL | |
Package Shape | ROUND | |
Package Style | CYLINDRICAL | |
Peak Point Current-Max | 12 mA | |
Power Dissipation-Max (Abs) | 0.45 W | |
Qualification Status | Not Qualified | |
Static Inter-base Res-Max | 6.8 kΩ | |
Static Inter-base Res-Min | 4.7 kΩ | |
Surface Mount | NO | |
Terminal Finish | TIN LEAD | |
Terminal Form | WIRE | |
Terminal Position | BOTTOM | |
Transistor Element Material | SILICON | |
Valley Point Current-Min | 8 mA |
Alternate Parts for 2N491
This table gives cross-reference parts and alternative options found for 2N491. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of 2N491, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
Part Number | Manufacturer | Composite Price | Description | Compare |
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2N491 | Advanced Semiconductor Inc | Check for Price | Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN | 2N491 vs 2N491 |
2N491A | Central Semiconductor Corp | Check for Price | Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN | 2N491 vs 2N491A |
2N491 | Texas Instruments | Check for Price | UJT, TO-5 | 2N491 vs 2N491 |