*Steady State Model of 0.4Amp PTC at 23C *May 24,Cathal Sheehan *SPICE MODEL LICENSE AGREEMENT * *IMPORTANT NOTICE: *YOUR access to SPICE MODELS created by Bourns, Inc., a California corporation (“Bourns”), is conditioned on YOUR acceptance of and agreement to comply with the terms of this SPICE Model License Agreement (this “Agreement”). YOU confirm your acceptance of and agreement to comply with this Agreement by clicking on the “AGREE” button below and downloading a SPICE MODEL from the Bourns website. *AGREEMENT *1. As used herein, “YOU” and “YOUR” refer both to you as an individual and any entity on whose behalf you are downloading a SPICE MODEL. *2. The information in each SPICE MODEL is protected under United States copyright laws. Bourns grants YOU a non-exclusive, non-transferable, revocable license to use the downloaded SPICE MODEL and to modify the downloaded SPICE MODEL to enable use with YOUR specific application, subject to the condition that YOU fulfil the terms of this Agreement. *3. YOU agree: *A. That although YOU are permitted to modify the downloaded SPICE MODEL created by Bourns for YOUR specific applications, all rights to the modified SPICE MODEL and any derivatives from such modified SPICE MODEL shall revert to Bourns; *B. Not to sell, lend out, or redistribute or grant a license to any third party for a version of the downloaded SPICE MODEL that YOU have completely or partially modified; *C. Not to create copies of a version of the downloaded SPICE MODEL that has been completely or partially modified by YOU. *D. To use only SPICE MODELS that YOU have directly downloaded from this website; and *E. 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Each downloaded SPICE MODEL is protected by copyright laws, and Bourns does not consent to the licensing of patent rights or other intellectual property rights (including those of third parties). *5. This Agreement shall be governed by and construed in accordance with the laws of the State of California, without regard to its choice of law provisions. The sole jurisdiction and venue for all actions related to the subject matter of this Agreement shall be the state and federal courts located in Riverside County, California. *6. The United Nations Convention on Contracts for the International Sale of Goods is excluded in its entirety from this Agreement. *7. The term of this Agreement shall commence when YOU download a SPICE MODEL and shall terminate when YOU stop using the downloaded SPICE MODEL, except that the provisions of Sections 3, 4 and 5 shall survive the termination of this Agreement. * .SUBCKT MF-RM040-Tamb23 I O V2 I N004 0 BdTemp 0 dTemp I=I(BIcorr)*I(BIcorr)*R0*(1+ALPHA*V(dTemp)) R_th1 dTemp N001 {R_TH1} C_th1 dTemp 0 {C_TH1} S1 N004 O N006 0 SW1 R_th2 N001 N002 {R_TH2} C_th2 N001 0 {C_TH2} A1 set_break set_nobreak 0 0 0 N006 0 0 SRFLOP td=0.1u C_th3 N002 0 {C_TH3} BIcorr 0 Icorr I=Table(I(BIabs), 0, 0.0, 2,2.0, 3,3.3, 5.5,5.50, 1e4, 1.0e4) R1 Icorr 0 1 BIabs 0 Iabs I=abs(I(V2)) R2 Iabs 0 1 BIabs1 0 set_break I=IF(abs(V(dTemp))>{dT_sw}, 1, 0) R3 set_break 0 1 I2 0 set_nobreak PULSE(0 1 1u 1u 1u 2u 1 1) R5 set_nobreak 0 1 R_th3 N002 N003 {R_TH3} V1 N003 0 {T_AMB} .MODEL SW1 SW(Ron=1u Roff=1G Vt=0.5 Vh=-0.4) * Reset at the beginning .param I_NOM=0.40 ; current rating of the fuse .param R0=0.6 ; R_fuse at no current .param R100=1.9 ; R_fuse at 100% current .param R_BREAK=1.9 ; the same as R100% * .param TAU1=0.7 .param TAU2=50 .param TAU3=220 * .param dT_MAX=1000 ; Melting temperature .param T_AMB=23 ; Ambient temperature .param dT_sw=180;Temperature at which polymer changes state * .param I_BREAK=I_NOM*2.5 .param P_BREAK=R_BREAK*I_BREAK*I_BREAK .param R_TH=(dT_MAX/P_BREAK) .param ALPHA=(R_BREAK-R0)/R0/dT_MAX * .param R_TH1=R_TH*0.02 .param R_TH2=R_TH*0.3 .param R_TH3=R_TH*0.68 * .param C_TH1=TAU1/R_TH1 .param C_TH2=TAU2/R_TH2 .param C_TH3=TAU3/R_TH3 .backanno .end .ENDS