diff --git a/bins/more/sim.fzb b/bins/more/sim.fzb
index 5c3e723c..074106ca 100644
--- a/bins/more/sim.fzb
+++ b/bins/more/sim.fzb
@@ -44,6 +44,13 @@
                 </iconView>
             </views>
         </instance>
+        <instance modelIndex="8" moduleIdRef="SparkFun-PowerIC-TRANSFORMER-PTH" path="sparkfun-poweric-transformer-pth.fzp">
+            <views>
+                <iconView layer="icon">
+                    <geometry x="-1" y="-1" z="-1"/>
+                </iconView>
+            </views>
+        </instance>
         <instance modelIndex="9" moduleIdRef="3254CBFC44diode" path="diode_1N4001_300mil.fzp">
             <views>
                 <iconView layer="icon">
diff --git a/core/sparkfun-poweric-transformer-pth.fzp b/core/sparkfun-poweric-transformer-pth.fzp
index 5ca1a688..8b590353 100644
--- a/core/sparkfun-poweric-transformer-pth.fzp
+++ b/core/sparkfun-poweric-transformer-pth.fzp
@@ -5,16 +5,36 @@
 <label>U</label>
 <author>www.fritzing.org</author>
 <description>Small transformers</description>
-<title>TRANSFORMER</title>
+<title>Transformer</title>
 <tags>
 <tag>PTH</tag>
-<tag>TRANSFORMER</tag>
+<tag>Transformer</tag>
 </tags>
 <properties>
 <property name="package">transformer</property>
 <property name="family">sparkfun Transformer</property>
 <property name="variant">pth</property>
+<property name="input inductance">10H</property>
+<property name="output inductance">40H</property>
+<property name="input resistance">1&#937;</property>
+<property name="output resistance">1&#937;</property>
 </properties>
+<spice>
+	<line>x{instanceTitle} {net connector0} {net connector1} {net connector3} {net connector2} basic_transformer Lin={input inductance} Lout={output inductance} Rin={input resistance} Rout={output resistance}</line>
+	<model>.subckt basic_transformer in1 in2 out1 out2 Lin=100u Lout=100u Rin=1 Rout=1
+* inductances
+Li in1 intin {Lin}
+Lo out1 intou {Lout}
+* coupling factors
+K1 Li Lo 1
+* series resistances
+Ri intin in2 {Rin}
+Ro intou out2 {Rout}
+* resistor to guarantee a DC path
+Rdc in1 out1 1Meg
+.ends basic_transformer
+</model>
+</spice>
 <views>
 <breadboardView>
 <layers image="breadboard/sparkfun-poweric_transformer_breadboard.svg">
diff --git a/core/sparkfun-poweric-transformer-smd.fzp b/core/sparkfun-poweric-transformer-smd.fzp
index 0b54e557..274322b0 100644
--- a/core/sparkfun-poweric-transformer-smd.fzp
+++ b/core/sparkfun-poweric-transformer-smd.fzp
@@ -5,17 +5,37 @@
 <label>U</label>
 <author>www.fritzing.org</author>
 <description>Small transformers</description>
-<title>TRANSFORMER</title>
+<title>Transformer</title>
 <tags>
-<tag>TRANSFORMER_SMD</tag>
-<tag>TRANSFORMER</tag>
+<tag>Transformer_SMD</tag>
+<tag>Transformer</tag>
 <tag>SMD</tag>
 </tags>
 <properties>
 <property name="package">transformer_smd</property>
 <property name="family">sparkfun Transformer</property>
 <property name="variant">smd</property>
+<property name="input inductance">10H</property>
+<property name="output inductance">40H</property>
+<property name="input resistance">1&#937;</property>
+<property name="output resistance">1&#937;</property>
 </properties>
+<spice>
+	<line>x{instanceTitle} {net connector0} {net connector1} {net connector3} {net connector2} basic_transformer Lin={input inductance} Lout={output inductance} Rin={input resistance} Rout={output resistance}</line>
+	<model>.subckt basic_transformer in1 in2 out1 out2 Lin=100u Lout=100u Rin=1 Rout=1
+* inductances
+Li in1 intin {Lin}
+Lo out1 intou {Lout}
+* coupling factors
+K1 Li Lo 1
+* series resistances
+Ri intin in2 {Rin}
+Ro intou out2 {Rout}
+* resistor to guarantee a DC path
+Rdc in1 out1 1Meg
+.ends basic_transformer
+</model>
+</spice>
 <views>
 <breadboardView>
 <layers image="breadboard/sparkfun-poweric_transformer_smd_breadboard.svg">