2N2221 - ELECTRICAL CHARACTERISTICS - Central Semiconductor NPN Transistors

Nov 1, 2026

Central Semiconductor 2N2221 and 2N2222 silicon NPN epitaxial planar transistors are specified for small-signal and general-purpose switching. The document lists maximum ratings at TA=25°C, including collector-base, collector-emitter, emitter-base voltages, continuous collector current, power dissipation, and temperature limits with thermal resistances. It provides electrical characteristics and test conditions for parameters such as leakage currents, breakdown voltages, saturation voltages, base-emitter saturation voltages, gain hFE, capacitances, and transition frequency. Mechanical and support/service information is also included.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Maximum Ratings (TA=25°C)

Electrical Characteristics (TA=25°C)

Electrical Characteristics - Continued

TO-18 Case - Mechanical Outline

Requesting Product Plating

2N2221 2N2222 SILICON NPN TRANSISTORS TO-18 CASE MAXIMUM RATINGS: (TA=25°C) Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Continuous Collector Current Power Dissipation Power Dissipation (TC=25°C) Operating and Storage Junction Temperature Thermal Resistance Thermal Resistance [www. centra lsemi. com](www. centra lsemi. com) DESCRIPTION: The CENTRAL SEMICONDUCTOR 2N2221 and 2N2222 are silicon NPN epitaxial planar transistors designed for small signal, general purpose switching applications. MARKING: FULL PART NUMBER SYMBOL VCBO V CEO VEBO IC PD PD TJ , Tstg Θ JA Θ JC 60 30 5.0 800 500 1.2 -65 to +200 350 146 UNITS V V V mA mW W °C °C/W °C/W ELECTRICAL CHARACTERISTICS: (TA=25°C unless otherwise noted) SYMBOL ICBO ICBO IEBOBVCBO BV CEO BVEBOVCE(SAT) VCE(SAT) V BE(SAT) V BE(SAT) fT Cob Cib TEST CONDITIONS V CB=50V V CB=50V, TA=150°CVEB=3.0VIC=10μA IC=10mA IE=10μA IC=150mA, IB=15mAIC=500mA, IB=50mAIC=150mA, IB=15mAIC=500mA, IB=50mA VCE=20V, IC=20mA, f=100MHz V CB=10V, IE=0, f=100kHz VEB=0.5V, IC=0, f=100kHz MIN - - - 60 30 5.0 - - 0.6 - 250 - - MAX 10 10 10 - - - 0.4 1.6 1.3 2.6 - 8.0 30 UNITS nA μA nA V V V V V V V MHz pF pF R2 (24-July 2013) 2N2221 2N2222 SILICON NPN TRANSISTORS ELECTRICAL CHARACTERISTICS -Continued: (TA=25°C unless otherwise noted) 2N2221 2N2222 SYMBOL hFE hFE hFE hFE hFE hFE hFE TEST CONDITIONS VCE=10V, IC=0.1mA VCE=10V, IC=1.0mA VCE=10V, IC=10mA VCE=10V, IC=10mA, TA=-55°C VCE=10V, IC=150mA VCE=1.0V, IC=150mA VCE=10V, IC=500mA MIN 20 25 35 15 40 20 25 MAX - - - - 120 - - MIN 35 50 75 35 100 50 40 MAX - - - - 300 - - TO-18 CASE - MECHANICAL OUTLINE LEAD CODE: 1) Emitter 2) Base 3) Collector MARKING: FULL PART NUMBER R2 (24-July 2013) [www. centra lsemi. com](www. centra lsemi. com) 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) • Online technical data and parametric search • SPICE models • Custom electrical curves • Environmental regulation compliance • Customer specific screening • Up-screening capabilities • Special wafer diffusions • PbSn plating options • Package details • Application notes • Application and design sample kits • Custom product and package development | REQUESTING PRODUCT PLATING
1. If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when ordering (example: 2N2222A TIN/LEAD) .
2. If requesting Lead (Pb) Free plated devices, add the suffix “ PBFREE” to the part number when ordering (example: 2N2222A PBFREE) . | | | --- | --- | | CONTACT US
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FAQs

2N2221/2N2222 的适用领域是什么？

用于小信号以及通用开关应用，属于硅 NPN 晶体管。文档强调其用于 small signal、general purpose switching。

文档给出了哪些 2N2221/2N2222 的最大额定值？

包括在 TA=25°C 下的 VCBO/VCEO/VEBO、连续集电极电流 IC、功耗 PD、结温与储存温度范围，以及热阻（θJA、θJC 等）。

如何订购需要镀层的器件（Tin/Lead 或 Pb-Free）？

若订购 Tin/Lead 镀层器件，订购时在料号后加后缀 “TIN/LEAD”（示例：2N2222A TIN/LEAD）。若订购 Pb-Free 镀层器件，添加后缀 “PBFREE”（示例：2N2222A PBFREE）。

Nov 1, 2026

Uploaded by Aria Callaghan