Datasheet
Table Of Contents
Data Sheet  ADuM1250/ADuM1251
Rev. I | Page 5 of 16 
PACKAGE CHARACTERISTICS 
Table 3. 
Parameter Symbol Min Typ Max Unit Test Conditions/Comments 
Resistance (Input to Output)
1
 R
I-O
 10
12
  Ω   
Capacitance (Input to Output)
1
 C
I-O
    1.0    pF  f = 1 MHz 
Input Capacitance  C
I
 4.0  pF  
IC Junction to Case Thermal Resistance, Side 1  θ
JCI
    46    °C/W  Thermocouple located at center of package underside 
IC Junction to Case Thermal Resistance, Side 2  θ
JCO
 41  °C/W  
1
 The device is considered a 2-terminal device; Pin 1 through Pin 4 are shorted together, and Pin 5 through Pin 8 are shorted together. 
REGULATORY INFORMATION 
The ADuM1250/ADuM1251 have been approved by the organizations listed in Table 4. 
Table 4. 
UL CSA  CQC  VDE 
Recognized Under 1577 
Component 
Recognition 
Program
1
Approved under CSA Component 
Acceptance Notice 5A 
Approved under CQC11-471543-2012 
Certified according to 
DIN V VDE V 0884-10 
(VDE V 0884-10): 2006-12
2
Single/Basic 2500 V rms 
Isolation Voltage 
Reinforced insulation per 
CSA 60950-1-03 and IEC 60950-1, 
125 V rms (177 V peak) maximum 
working voltage 
Basic insulation per CSA 60950-1-03 
and IEC 60950-1, 400 V rms (566 V 
peak) maximum working voltage 
Basic insulation per GB4943.1-2011, 
400 V rms (566 V peak) maximum working 
voltage, tropical climate, altitude ≤ 5000 m 
Reinforced insulation, 
560 V peak 
File E214100  File 205078  File CQC14001108691  File 2471900-4880-0001 
1
 In accordance with UL 1577, each ADuM1250/ADuM1251 is proof tested by applying an insulation test voltage ≥ 3000 V rms for 1 second (current leakage detection 
limit = 5 μA). 
2
 In accordance with DIN V VDE V 0884-10, each ADuM1250/ADuM1251 is proof tested by applying an insulation test voltage ≥ 1050 V peak for 1 sec (partial discharge 
detection limit = 5 pC). The asterisk (*) marking branded on the component designates DIN V VDE V 0884-10 approval. 
INSULATION AND SAFETY RELATED SPECIFICATIONS 
Table 5. 
Parameter Symbol Value Unit Test Conditions/Comments 
Rated Dielectric Insulation Voltage    2500  V rms  1-minute duration 
Minimum External Air Gap (Clearance)  L(I01)  4.90 min  mm 
Measured from input terminals to output 
terminals, shortest distance through air 
Minimum External Tracking (Creepage)  L(I02)  4.01 min  mm 
Measured from input terminals to output 
terminals, shortest distance path along body 
Minimum Internal Gap (Internal Clearance)    0.017 min  mm  Insulation distance through insulation 
Tracking Resistance (Comparative Tracking Index)  CTI  >400  V  DIN IEC 112/VDE 0303 Part 1 
Isolation Group    II    Material Group (DIN VDE 0110, 1/89, Table 1) 
Maximum Working Voltage Compatible with 
50 Year Service Life 
V
IORM
  565  V peak  Continuous peak voltage across the isolation barrier 










