Central Semiconductor can screen COTS bare die products to MIL-PRF-38534 (Class H and K equivalents), to MIL-PRF-19500 (class HC and KC equivalents), and to customer-provided source control drawings.

Central's 45 year reputation for exceptional quality ensures that these up-screened devices are ideal for the latest and most demanding high reliability applications, including industrial, military/aerospace, and space level.

To ensure rapid product development and product availability, Central maintains an extensive wafer inventory and test capacity in its Long Island, NY facility.

Devices include:

  • Small signal transistors
  • Bipolar power transistors
  • EOS protection devices (TVS)
  • Diodes/Rectifiers
  • Thyristors

Up-screened bare die part number nomenclature:

The following is a guide to Central's up-screened and custom device part numbers. Example part number - CP127-H2N6300-CM: Bipolar transistor die, up-screened to MIL-PRF-38534 Class H equivalent, 2N6300 device, packaged in chip tray.

MIL equivalent bare die up-screening

For customers requiring high reliability MIL-equivalent devices, commercial-off-the-shelf (COTS) bare die products are up-screened to MIL-PRF-38534 Class H and K equivalents, and to MIL-PRF-19500 Class HC and KC equivalents. Central offers a portfolio of these up-screened products.

Currently available up-screened die:

Central currently has inventory of the following up-screened bare die. Please contact your Central Sales Representative to learn more about Central’s die up-screening capabilities.

Part Number Type Principle Device
CP127-H2N6300-CM Class H equivalent per MIL-PRF-38534 2N6300
CP230-H2N6039-CM Class H equivalent per MIL-PRF-38534 2N6039
CP310-HMPSA42-CM Class H equivalent per MIL-PRF-38534 MPSA42
CP336V-H2N5551-CM Class H equivalent per MIL-PRF-38534 2N5551
CP588-HBC556B-CM Class H equivalent per MIL-PRF-38534 BC556B
CP591X-H2N2907A-CM Class H equivalent per MIL-PRF-38534 2N2907A
CP635-H2N3791-CM Class H equivalent per MIL-PRF-38534 2N3791
CP647-HPMD19K100-CM Class H equivalent per MIL-PRF-38534 PMD19K100
CP705V-HCZT4033-CM Class H equivalent per MIL-PRF-38534 CZT4033
CP710V-HMPSA92-CM Class H equivalent per MIL-PRF-38534 MPSA92
CP767V-H2N3467-CM Class H equivalent per MIL-PRF-38534 2N3467

High reliability bare die test flows:


Class H Equivalent

Class K Equivalent


Class HC Equivalent

Class KC Equivalent

Contact us to purchase:

Please contact Central directly or through one of Central's regional representatives to purchase up-screened die:
Contact Sales Worldwide Field Representatives

Custom bare die up-screening

Your vision is our mission. Central excels at listening to customers’ challenges and designing custom solutions that other manufacturers have no interest in pursuing.

At times, customers do not require full MIL equivalent testing, and instead provide Central with specific testing requirements. For other applications, a customer may require even more intensive testing than MIL equivalent. Central excels at designing a customer-specific solution to support the full array of design requirements that our customers may specify.

Customer SCDs can be stored confidentially with Central to ensure that future products adhere to the same testing. Customers can update SCDs at any time. To ensure further design security, custom devices are given unique CEN part numbers; these part numbers are not used for any other customers or devices.

Just ask.

Thermal cycle testing

Temperature cycle chamber testing

Scanning Electron Microscopy (S.E.M.)

Wire pull & die shear testing

Tell us your design requirements:

Contact Us Worldwide Field Representatives