Part Details for 2N491 by Solid State Devices Inc (SSDI)
Overview of 2N491 by Solid State Devices Inc (SSDI)
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- Number of FFF Equivalents:
- CAD Models:
- Number of Functional Equivalents:
- Part Data Attributes
- Reference Designs:
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Applications
Automotive
Part Details for 2N491
2N491 CAD Models
2N491 Part Data Attributes
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2N491
Solid State Devices Inc (SSDI)
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Datasheet
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2N491
Solid State Devices Inc (SSDI)
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 | SOLID STATE DEVICES INC | |
| Part Package Code | TO-5 | |
| Package Description | TO-5, 3 PIN | |
| Pin Count | 3 | |
| Reach Compliance Code | 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 | Description | Manufacturer | Compare |
|---|---|---|---|
| 2N491A | Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN | Central Semiconductor Corp | 2N491 vs 2N491A |
| 2N491A | Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN | Space Power Electronics Inc | 2N491 vs 2N491A |
| 2N491 | Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN | Advanced Semiconductor Inc | 2N491 vs 2N491 |
| 2N491 | UJT, TO-5 | Texas Instruments | 2N491 vs 2N491 |
| 2N491A | Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN | Advanced Semiconductor Inc | 2N491 vs 2N491A |
| 2N491A | Unijunction Transistor, 12uA I(P), TO-5, TO-5, 3 PIN | Solid State Devices Inc (SSDI) | 2N491 vs 2N491A |