APLAC Models are available for the following PIN diodes. SPICE models are not available for Agilent Technologies PIN diodes as SPICE does not model carrier lifetime, a critical parameter for PIN diodes.

• HSMP-380x series:
• HSMP-381x series:
• HSMP-382x series:
• HSMP-383x series:
• HSMP-386x series:
• HSMP-388x series:
• HSMP-389x series:

APLAC Limited PIN Diode Model

APLAC MODEL LIMITATIONS:

The model can be used to predict the r.f. resistance and forward voltage. It does not give predictions of distortion. A PIN diode only behaves reliably as a variable resistor at frequencies above 10fc, where fc = 1/2pt and t is the minority carrier lifetime. The capacitance of a PIN diode does vary with the reverse voltage applied however the APLAC model only allows a fixed value. APLAC uses carrier lifetime (t) as an approximation for transit time (TT).

HSMP-380x Limited APLAC Model

D1 uses the standard SPICE diode model, and is described by Is, N, and TT. Rs in the standard model is replaced by the external network of Rmin, Rmax, and Rvar. The parameters are for a single diode (HSMP-3800). Parameters also apply to the individual diodes within multiple diode configurations.

parameter	units	description	value
Rmax	ohm	maximum r.f. resistance	10000
Rmin	ohm	minimum r.f. resistance	2
K	-	resistance curve fitting exponent	1.015
A	-	resistance curve fitting constant	0.0434
L	nH	connection inductance	2
C	pF	diode capacitance at r.f. frequency	0.3
Is	A	diode saturation current	3.5E-9
N	-	diode ideality factor	2.062
TT	nsec	transit time (carrier lifetime)	1800

APLAC Limited PIN Diode Model

APLAC MODEL LIMITATIONS:

The model can be used to predict the r.f. resistance and forward voltage. It does not give predictions of distortion. A PIN diode only behaves reliably as a variable resistor at frequencies above 10fc, where fc = 1/2pt and t is the minority carrier lifetime. The capacitance of a PIN diode does vary with the reverse voltage applied however the APLAC model only allows a fixed value. APLAC uses carrier lifetime (t) as an approximation for transit time (TT).

HSMP-381x Limited APLAC Model

D1 uses the standard SPICE diode model, and is described by Is, N, and TT. Rs in the standard model is replaced by the external network of Rmin, Rmax, and Rvar. The parameters are for a single diode (HSMP-3800). Parameters also apply to the individual diodes within multiple diode configurations.

parameter	units	description	value
Rmax	ohm	maximum r.f. resistance	12000
Rmin	ohm	minimum r.f. resistance	2.5
K	-	resistance curve fitting exponent	0.987
A	-	resistance curve fitting constant	0.0902
L	nH	connection inductance	2
C	pF	diode capacitance at r.f. frequency	0.25
Is	A	diode saturation current	1.2E-9
N	-	diode ideality factor	1.998
TT	nsec	transit time (carrier lifetime)	1500

APLAC Limited PIN Diode Model

APLAC MODEL LIMITATIONS:

The model can be used to predict the r.f. resistance and forward voltage. It does not give predictions of distortion. A PIN diode only behaves reliably as a variable resistor at frequencies above 10fc, where fc = 1/2pt and t is the minority carrier lifetime. The capacitance of a PIN diode does vary with the reverse voltage applied however the APLAC model only allows a fixed value. APLAC uses carrier lifetime (t) as an approximation for transit time (TT).

HSMP-382x Limited APLAC Model

D1 uses the standard SPICE diode model, and is described by Is, N, and TT. Rs in the standard model is replaced by the external network of Rmin, Rmax, and Rvar. The parameters are for a single diode (HSMP-3800). Parameters also apply to the individual diodes within multiple diode configurations.

parameter	units	description	value
Rmax	ohm	maximum r.f. resistance	5000
Rmin	ohm	minimum r.f. resistance	0.35
K	-	resistance curve fitting exponent	0.767
A	-	resistance curve fitting constant	0.00825
L	nH	connection inductance	2
C	pF	diode capacitance at r.f. frequency	0.8
Is	A	diode saturation current	1.15E-11
N	-	diode ideality factor	1.641
TT	nsec	transit time (carrier lifetime)	70

APLAC Limited PIN Diode Model

APLAC MODEL LIMITATIONS:

The model can be used to predict the r.f. resistance and forward voltage. It does not give predictions of distortion. A PIN diode only behaves reliably as a variable resistor at frequencies above 10fc, where fc = 1/2pt and t is the minority carrier lifetime. The capacitance of a PIN diode does vary with the reverse voltage applied however the APLAC model only allows a fixed value. APLAC uses carrier lifetime (t) as an approximation for transit time (TT).

HSMP-383x Limited APLAC Model

D1 uses the standard SPICE diode model, and is described by Is, N, and TT. Rs in the standard model is replaced by the external network of Rmin, Rmax, and Rvar. The parameters are for a single diode (HSMP-3800). Parameters also apply to the individual diodes within multiple diode configurations.

parameter	units	description	value
Rmax	ohm	maximum r.f. resistance	5000
Rmin	ohm	minimum r.f. resistance	1.5
K	-	resistance curve fitting exponent	0.9327
A	-	resistance curve fitting constant	0.0183
L	nH	connection inductance	2
C	pF	diode capacitance at r.f. frequency	0.2
Is	A	diode saturation current	1.49E-9
N	-	diode ideality factor	2.022
TT	nsec	transit time (carrier lifetime)	500

APLAC Limited PIN Diode Model

APLAC MODEL LIMITATIONS:

The model can be used to predict the r.f. resistance and forward voltage. It does not give predictions of distortion. A PIN diode only behaves reliably as a variable resistor at frequencies above 10fc, where fc = 1/2pt and t is the minority carrier lifetime. The capacitance of a PIN diode does vary with the reverse voltage applied however the APLAC model only allows a fixed value. APLAC uses carrier lifetime (t) as an approximation for transit time (TT).

HSMP-386x Limited APLAC Model

D1 uses the standard SPICE diode model, and is described by Is, N, and TT. Rs in the standard model is replaced by the external network of Rmin, Rmax, and Rvar. The parameters are for a single diode (HSMP-3800). Parameters also apply to the individual diodes within multiple diode configurations.

parameter	units	description	value
Rmax	ohm	maximum r.f. resistance	5000
Rmin	ohm	minimum r.f. resistance	1.5
K	-	resistance curve fitting exponent	0.9327
A	-	resistance curve fitting constant	0.0183
L	nH	connection inductance	2
C	pF	diode capacitance at r.f. frequency	0.2
Is	A	diode saturation current	1.49E-9
N	-	diode ideality factor	2.022
TT	nsec	transit time (carrier lifetime)	500

APLAC Limited PIN Diode Model

APLAC MODEL LIMITATIONS:

The model can be used to predict the r.f. resistance and forward voltage. It does not give predictions of distortion. A PIN diode only behaves reliably as a variable resistor at frequencies above 10fc, where fc = 1/2pt and t is the minority carrier lifetime. The capacitance of a PIN diode does vary with the reverse voltage applied however the APLAC model only allows a fixed value. APLAC uses carrier lifetime (t) as an approximation for transit time (TT).

HSMP-388x Limited APLAC Model

D1 uses the standard SPICE diode model, and is described by Is, N, and TT. Rs in the standard model is replaced by the external network of Rmin, Rmax, and Rvar. The parameters are for a single diode (HSMP-3800). Parameters also apply to the individual diodes within multiple diode configurations.

parameter	units	description	value
Rmax	ohm	maximum r.f. resistance	5000
Rmin	ohm	minimum r.f. resistance	1
K	-	resistance curve fitting exponent	0.864
A	-	resistance curve fitting constant	0.0486
L	nH	connection inductance	2
C	pF	diode capacitance at r.f. frequency	0.4
Is	A	diode saturation current	1.49E-9
N	-	diode ideality factor	1.947
TT	nsec	transit time (carrier lifetime)	2500

APLAC Limited PIN Diode Model

APLAC MODEL LIMITATIONS:

The model can be used to predict the r.f. resistance and forward voltage. It does not give predictions of distortion. A PIN diode only behaves reliably as a variable resistor at frequencies above 10fc, where fc = 1/2pt and t is the minority carrier lifetime. The capacitance of a PIN diode does vary with the reverse voltage applied however the APLAC model only allows a fixed value. APLAC uses carrier lifetime (t) as an approximation for transit time (TT).

HSMP-389x Limited APLAC Model

D1 uses the standard SPICE diode model, and is described by Is, N, and TT. Rs in the standard model is replaced by the external network of Rmin, Rmax, and Rvar. The parameters are for a single diode (HSMP-3800). Parameters also apply to the individual diodes within multiple diode configurations.

parameter	units	description	value
Rmax	ohm	maximum r.f. resistance	5000
Rmin	ohm	minimum r.f. resistance	0.5
K	-	resistance curve fitting exponent	0.746
A	-	resistance curve fitting constant	0.0202
L	nH	connection inductance	2
C	pF	diode capacitance at r.f. frequency	0.2
Is	A	diode saturation current	1.68E-11
N	-	diode ideality factor	1.673
TT	nsec	transit time (carrier lifetime)	200