2N4870 2N4871 SILICON PN UNIJUNCTION TRANSISTORS w w w. c e n t r a l s e m i . c o m DESCRIPTION: The CENTRAL SEMICONDUCTOR 2N4870 and 2N4871 are silicon PN unijunction transistors designed for oscillator, triggering and timing applications. MARKING: FULL PART NUMBER TO-92 CASE MAXIMUM RATINGS: (TA=25C) Emitter Reverse Voltage Interbase Voltage SYMBOL VB2E VB2B1 30 UNITS V 35 V Ie ie 1.5 A 1.0 A 300 mW Operating Junction Temperature PD TJ -65 to +125 C Storage Temperature Tstg -65 to +150 C ELECTRICAL CHARACTERISTICS: (TA=25C) SYMBOL TEST CONDITIONS VB2B1=10V 2N4870 MIN MAX 0.56 0.75 2N4871 MIN MAX 0.70 0.85 RBB VB2B1=3.0V 4.0 9.1 4.0 9.1 k IEB2O VB2E=30V - 1.0 - 1.0 A IV VB2B1=20V, RB2=100 VB2B1=25V 2.0 - 4.0 - mA IP - 5.0 - 5.0 A VOB1 V1=20V 3.0 - 5.0 - V RMS Emitter Current Peak Emitter Current (Duty Cycle 1%, PRR=10pps) RMS Power Dissipation UNITS R1 (23-April 2013) 2N4870 2N4871 SILICON PN UNIJUNCTION TRANSISTORS TO-92 CASE - MECHANICAL OUTLINE LEAD CODE: 1) Base 1 2) Emitter 3) Base 2 MARKING: FULL PART NUMBER R1 (23-April 2013) w w w. c e n t r a l s e m i . c o m OUTSTANDING SUPPORT AND SUPERIOR SERVICES PRODUCT SUPPORT Central's operations team provides the highest level of support to insure product is delivered on-time. * Supply management (Customer portals) * Custom bar coding for shipments * Inventory bonding * Custom product packing * Consolidated shipping options DESIGNER SUPPORT/SERVICES Central's applications engineering team is ready to discuss your design challenges. Just ask. * Free quick ship samples (2nd day air) * Special wafer diffusions * Online technical data and parametric search * PbSn plating options * SPICE models * Package details * Custom electrical curves * Application notes * Environmental regulation compliance * Application and design sample kits * Customer specific screening * Custom product and package development * Up-screening capabilities REQUESTING PRODUCT PLATING 1. 2. If requesting Tin/Lead plated devices, add the suffix " TIN/LEAD" to the part number when ordering (example: 2N2222A TIN/LEAD). If requesting Lead (Pb) Free plated devices, add the suffix " PBFREE" to the part number when ordering (example: 2N2222A PBFREE). CONTACT US Corporate Headquarters & Customer Support Team Central Semiconductor Corp. 145 Adams Avenue Hauppauge, NY 11788 USA Main Tel: (631) 435-1110 Main Fax: (631) 435-1824 Support Team Fax: (631) 435-3388 www.centralsemi.com Worldwide Field Representatives: www.centralsemi.com/wwreps Worldwide Distributors: www.centralsemi.com/wwdistributors For the latest version of Central Semiconductor's LIMITATIONS AND DAMAGES DISCLAIMER, which is part of Central's Standard Terms and Conditions of sale, visit: www.centralsemi.com/terms w w w. c e n t r a l s e m i . c o m (001) http://www.centralsemi.com PDN01115 12/12/18 Stock Only Stock Only Please be advised that Central Semiconductor must immediately discontinue the product(s) listed in the attached PDN notice. We are unable to accept any further orders for these products unless _____ we have available inventory on hand. You may have purchased one or more of the products listed. Please do not hesitate to contact your local Central Semiconductor sales representative with any questions or needs you may have. Central regrets any inconvenience this may cause. Sincerely, Central Semiconductor Corp. PDN01115 12/12/18 Stock Only Stock Only http://www.centralsemi.com Summary:The 2N4870 and 2N4871 unijunction transistors are discontinued and now classified as End of Life (EOL). Although Central Semiconductor Corp. makes every effort to continue to produce devices that have been proclaimed EOL (End of Life) by other manufacturers, it is an accepted industry practice to discontinue certain devices when customer demand falls below a minimum level of sustainability. Accordingly, the following product(s) have been transitioned to End of Life status as part of Central's ongoing Product Management Process. Any replacement products are noted below. The effective date for placing last purchase orders will be six (6) months from the date of this notice and twelve (12) months from the notice date for final shipments, and minimum order quantities may apply. The last purchase and shipment dates may be extended if inventory is available. Central Part Number 2N4870 2N4871 Replacement N/A, Stock Only N/A, Stock Only Central would be happy to assist you by providing additional information or technical data to help locate an alternate source if we have no replacement available. Please email your requests to engineering@centralsemi.com. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Central Semiconductor: 2N4870 2N4871