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SMPS Capacitors

Switch-mode power supply (SMPS) capacitors are designed to provide superior
performance in high-frequency switching applications.  SMPS capacitors are ideal for high energy density products found in both military and commercial markets. Spectrum Control's ceramic capacitors are designed and produced in the USA.

Spectrum Control can design products in accordance with DSCC 87106 and MIL-PRF-49470 standards. Visit Military Standard Qualified EMI Filters to see the cross-reference lists.

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SMPS Capacitor Applications

  • High-frequency applications
  • EMI filtering and multi-pin connectors
  • Medical devices
  • EMI/RFI suppression filters
  • Commercial applications
  • Defense applications
  • Power supplies
  • Converters
  • Multi-line designs
  • Industrial control process

SMPS Capacitor Features

  • Multi-layer ceramic capacitors
  • Ideal for DC-DC power supply applications
  • SMPS capacitor assemblies with low ESR/ESL
  • Leaded parts safeguard against thermal and mechanical stresses
  • SMPS capacitor designs available for both military and commercial markets
  • Mil-PRF-49470 Qualified, DSCC 87106 and custom product available
  • Capacitance values 0.01µF to 47µF
  • BP, BX, BR, or BQ ceramic available
  • Lead options: SMT (J or L leads) or through-hole

SMPS Capacitor Specifications


Style Size Dimensions
A
max		 B
max		 C
±0.025”		 D
±0.025”		 E
max		 Leads/
Sides
SMP-3 (in) 0.650 0.715 0.450 1.050 0.500 10
(mm) 16.50 18.16 11.42 26.65 12.69
SMP-4 (in) 0.650 0.715 0.400 0.400 0.440 4
(mm) 16.50 18.16 10.15 10.15 11.17
SMP-5 (in) 0.650 0.715 0.250 0.250 0.300 3

SMPS Capacitor Electrical Testing

Absolute Maximum Output Capacitance
Assuming no ESL and no ESR

Absolute Maximum Output Capacitance (Assuming no ESL and no ESR)

Impedance vs. Frequency

Impedance vs. Frequency

ESR vs. Frequency

ESR vs. Frequency

Absolute Maximum Capacitance ESR
Assuming no ESL - Capacitive Induced Ripple

Absolute Maximum Capacitance ESR (Assuming no ESL - Capacitive Induced Ripple)

Absolute Maximum Capacitance ESL
Assuming no ESR - Capacitive Induced Ripple

Absolute Maximum Capacitance ESL (Assuming no ESR - Capacitive Induced Ripple)

 

SMPS Capacitor Electrical Testing

Test Group Test
Order		 Test Test Method Post Test Requirements Sampling Procedure
Group A 1 Visual and Mechanical     13 Samples
0 Failures
2 Materials, Designs, Construction and Workmanship    
3 Physical Dimensions
and Marking		    
4 Capacitance and Dissipation Factor MIL-STD-202 Method 305   100%
5 Dielectric Withstanding Voltage MIL-STD-202 Method 301,
2.5x DCWV except 500V @ 1.5x		  
6 Insulation Resistance MIL-STD-202 Method 302
@ DCWV, 25 C		 >100,000 megohms or 1,000 megohm-µF, whichever is less
Group B
Sub Group I		 1 Voltage & Temperature Limits     12 Samples
1 Failure
2 Resistance to Solvents MIL-STD-202 Method 215  
3 Immersion MIL-STD-202 Method 104
test condition B		 No mechanical damage.
Dielectric strength, capacitance,
df and 25 C IR to original limits
4 Terminal Strength MIL-STD-202 Method 211 test condition A. Case codes 1-4, 6-5 lbs case code 5-4 lbs No evidence of loosening
or rupturing of terminals
Group B
Sub Group II		 1 Resistance to
Soldering Heat		 MIL-STD-202 Method 210 N lead style test condition B, J and L styles test condition I No mechanical damage.
Dielectric strength, capacitance,
df and 25 C IR to original limits		 12 Samples
1 Failure
2 Moisture Resistance MIL-STD-202 Method 106,
20 cycles		 No mechanical damage.
Dielectric strength, capacitance,
df and 25 C IR to original limits
Group B
Sub Group III		 1 Life MIL-STD-202 Method 108, 1000 hrs. 2x DCWV except 1.2x 500 DCWV No mechanical damage.
Dielectric strength, capacitance, df,
125 C IR and 25 C IR to original limits		 12 Samples
1 Failure
Optional   Solderabililty Group A      
  Thermal Shock and Voltage Conditioning    
  Ultrasonic Examination    
  Destructive Physical Analysis    
  Shock, Specified Pulse    
  Vibration, High Frequency    
  Humidity, Steady State – Low Voltage    
  Barometric Pressure