For Avionics, Military and Space Programs

Our hybrid DC-DC converters and EMI filters are available in multiple environmental screening grades to satisfy a wide range of requirements. Environmental screening for the KL1 grade is referenced to the MIL-STD-883 test methods applicable for MIL-PRF-38534 Class K devices, per in-house procedures. Custom environmental screening can be performed to meet specialized needs.

Please contact a sales representative concerning any custom environmental screenings you require.


Test Method, Condition

Class H
Class K or
Class KL1
/K or KL1
Bond Pull
Internal VisualTM2010, TM2017,
(MIL-STD-750, TM2072, TM2073)
Temperature CyclingTM1010, Condition C, -65°C to 150°C, Ambient
TM1010, Condition B, -55°C to 125°C, Ambient
Constant AccelerationTM2001, 3000g, Y1 Direction
TM2001, 500g, Y1 Direction
PIND4TM2020, Condition A
Pre Burn-In Electrical100% at 25°C
Burn-InTM1015, 320 hrs +125°C, Case Typ
TM1015, 160 hrs +125°C, Case Typ
TM1015, 96 hrs +125°C, Case Typ
TM1015, 24 hrs +125°C, Case Typ
Final ElectricalMIL-PRF-38534, Group A, Subgroups 1-6
-55°C , 25°C, 125°C 1
MIL-PRF-38534, Group A, Subgroups 1 and 4, 25°C
HermeticityTM1014, Fine Leak, Condition A2 or B1
TM1014, Gross Leak, Condition C1 or B2
Gross Leak, Dip (No Bomb), Visual Verification
External VisualTM2009


  1. 100% R&R testing with all test data included in product shipment.
  2. Not required per MIL-PRF-38534. Test is performed for additional product quality assurance.
  3. Non-QML products may not meet all requirements of MIL-PRF-38534.
  4. PIND test Certificate of Compliance included in product shipment.
  5. Radiographic test Certificate of Compliance and film(s) or data CD included in product shipment.
  6. -KL1 products are identical in every way with Class K products in compliance with MIL-PRF-38534 revision L and later revisions except they contain elements evaluated to the requirements of MIL-PRF-38534 revision K and previous revisions. These devices are not marked with an SMD number or MIL-PRF-38534 certification mark and are marked with -KL1 screening code in place of -K.
  7. Engineering models utilize only the screening specified and are not considered compliant for flight use.