dear,For serviceing my Invertor, mosfet part.no.IRFZ44N of International Rectifier make is required. But, the company has since withdrawn the part. Hence, the equivalent of Texas instrument make may be intimated. The spec details of mosfet part.no.IRFZ44N of International Rectifier make is is here under.

Part Search Site Search Part: IRFZ44N Description: 55V Single N-Channel HEXFET Power MOSFET in a TO-220AB package Support Docs: Datasheet Spice File Saber File Lead Free Datasheet Advisory: Leaded Product Support The leaded version of this part will be supported by Hi-Rel effective March 22, 2010. Please direct questions and orders to your local Sales Representative or local distributor. Any lead-free version of this part will continue to be supported by Commercial Specifications Parameter Value Package TO-220AB Circuit Discrete VBRDSS (V) 55 VGs Max (V) 20 RDS(on) Max 10V (mOhms) 17.5 ID @ TC = 25C (A) 41 ID @ TC = 100C (A) 29 Qg Typ (nC) 42.0 Qgd Typ (nC) 15.3 Rth(JC) (K/W) 1.8 Power Dissipation @ TC = 25C (W) 83 Part Status Active Environmental Options Available PbF and Leaded Package Class Can Thru-Hole Packaging Options Product ID Description Status Standard Pack 1K BudgetaryPricing (USD) Qty IRFZ44N A IRFZ44N with Leaded Packaging Active 50 IRFZ44NPBF A IRFZ44NPBF with Standard Packaging Active 50 $0.68 Package Support Docs TO-220AB Case Outline Leadform Options Part Marking RoHS/PbF Compliance Tube Click here to display Distributor Inventory Part Search: International Sites: | Chinese 简体中文 | Korean 한국어 | Japanese 日本語 | About International Rectifier | Contact Us | Privacy ©1995-2010 International Rectifier How to Buy ProductsPart SearchCross

 

TO-220AB Circuit Discrete VBRDSS (V) 55 VGs Max (V) 20 RDS(on) Max 10V (mOhms) 17.5 ID @ TC = 25C (A) 41 ID @ TC = 100C (A) 29 Qg Typ (nC) 42.0 Qgd Typ (nC) 15.3 Rth(JC) (K/W) 1.8 Power Dissipation @ TC = 25C (W)

Do a parametric search for a FET in T0-220AB with the above parameters. Higher voltage and/or current, lower RDS is acceptable.