MIL-PRF-19978 / MIL-C-19978 CQ & CQR Capacitors
Electronic Expediters stocks fixed dielectric capacitors associated with MIL-PRF-19978 and legacy MIL-C-19978 terminology.
MIL-PRF-19978 remains relevant to current and legacy military capacitor sourcing. Individual CQ and CQR detail requirements should be verified against the complete part number and applicable military documentation.
MIL-PRF-19978 / CQ-CQR Identification
Inventory in this family commonly uses CQ and CQR military style numbers. Older drawings may reference MIL-C-19978 while later documentation uses MIL-PRF-19978.
Search Expediters Inventory by Exact Part Number
Use the complete military style, specification reference or manufacturer part number whenever possible. Parts within the same military family can differ materially in electrical ratings, construction, reliability level and physical configuration.
MIL-PRF-19978 / CQ-CQR Inventory
605 matching salable inventory records
| Part Number | Brand | Military / Alt Reference | EE / SE # | Date Code | Lot # | Qty Available | Part Details |
|---|---|---|---|---|---|---|---|
| CQR39A3KC183K3R | SPRAGUE | — | 533834 | — | 18900 | 11 | View Part |
| CQR39A3KC562K3R | SPRAGUE | GA562X0200K | 554767 | — | 18900 | 21 | View Part |
| CQR39A3KC683K3P | WESTCAP | GA683X0200K | 616774 | — | 21748 | 146 | View Part |
| CQR39A3KE332K3R | SPRAGUE | GA332X0400K | 539409 | — | 18900 | 6 | View Part |
| CQR42A1KF224K3P | WEST | M19978/17-321 | 261803 | — | 12540 | 73 | View Part |
Military and Legacy Component Sourcing
Electronic Expediters maintains extensive legacy electronic-component inventory that can help support military, aerospace, industrial and maintenance programs when exact styles are no longer routinely stocked by broad-line distributors.
Related Military Capacitor Resources
Military Capacitors | MIL-PRF-83421 Capacitors | All Specialized Capacitors
MIL-PRF-19978 / CQ-CQR Questions
Can I search by exact military style?
Yes. Search using the complete military style, specification reference, manufacturer part number or available cross-reference.
Are parts within the same military family automatically interchangeable?
No. Verify the complete specification, detail requirement, electrical ratings, physical configuration and reliability requirements before considering any substitute.
Why are legacy military numbers still important?
Military and aerospace equipment often remains in service for decades, so older BOMs, drawings and maintenance documents continue to reference historical specifications and styles.