MIL-PRF-38534 Screening and Quality Conformance Inspection Requirements
MIL-PRF-38534 covers screening requirements that all parts are submitted to as well as Quality Conformance Inspection consisting of one or more of Group A, B, C and D for acceptance of the design of the process and of the production lot.
MIL-PRF-38534 applies to multi-chip modules and systems such as power modules.
For more information on MIL-PRF-38534 screening and quality conformance inspection, consult the DoD document or contact IR HiRel.
MIL-PRF-38534 Screening Requirements
| Test/Inspection | Screening Level | MIL-STD-883 Method |
|
| Class H | Class K (Space Level) |
||
| Pre Seal Burn-in | Optional | Optional | 1030 |
| Nondestructive bond pull | N/A | 100% | 2023 |
| Internal visual | 100% | 100% | 2017 |
| Temperature Cycle | 100% | 100% | 1010 |
| Constant acceleration | 100% | 100% | 2001 |
| Mechanical shock | 100% | 100% | 2002 |
| Particle impact noise detection (PIND) | N/A | 100% | 2020 |
| Preburn-in electrical | Optional | 100% | |
| Burn-in | 100% | 100% | 1015 |
| Final electrical | 100% | 100% | |
| Seal | 100% | 100% | 1014 |
| Radiographic | N/A | 100% | 2012 |
| External visual | 100% | 100% | 2009 |
The HiRel Products Group has also established standard, cost-effective screening programs known as the QIRL program. Standard "off the shelf," Space, JANTXV or JANTX level product can be designated as QIRL. These products are fully compliant with all screening and Quality Conformance Inspection (QCI) requirements of MIL-PRF-19500 for Space, JANTXV or JANTX levels. They meet the same data sheet electrical and mechanical specifications, and are produced and tested on a JANS qualified line.
Note 1: Level 2 devices- burn-in time is 48 hours minimum, Level 3 devices - burn-in time is 160 hours minimum.
Note 2: PDAs apply to burn-in and post electricals only.
Note 3: When ordering "P" level devices, the letter "P" is not marked on the device.
MIL-PRF-38534 Quality Conformance Inspection
MIL-PRF-38534 Group A Electrical Testing
| Sub Group |
Parameters | Quantity (accept number) |
| 1 | Static tests at +25°C | 116 (0) |
| 2 | Static tests at max. rated operating temp. | 76 (0) |
| 3 | Static tests at min. rated operating temp. | 45 (0) |
| 4 | Dynamic test at +25°C | 116 (0) |
| 5 | Dynamic tests at max. rated operating temp. | 15 (0) |
| 6 | Dynamic tests at max. rated operating temp. | 45 (0) |
| 7 | Functional tests at +25°C | 116 (0) |
| 8 | Functional tests at max. and min. rated operating temp. | 76 (0) |
| 9 | Switching tests at +25°C | 116 (0) |
| 10 | Switching tests at max. rated operating temp. | 76 (0) |
| 11 | Switching tests at min. rated operating temp. | 45 (0) |
MIL-PRF-38534 Group B Testing
| Sub Group |
Parameters | Quantity (accept number) |
Class | |
| K | H | |||
| 1 | Physical dimension | 2 (0) | X | X |
| 2 | PIND | 15 (0) | X | |
| 3 | Resistance to solvents | 3 (0) | X | X |
| 4 | Internal visual and mechanical | 1 (0) | X | X |
| 5 | Bond strength: a. Thermocompression b. Ultrasonic or wedge c. Flip-chip d. Beam lead |
2 (0) | X | X |
| 6 | Die shear strength | 2 (0) | X | X |
| 7 | Solderability | 1 (0) | X | X |
| 8 | Seal: a. Fine b. Gross |
15 (0) | X | |
| 9 | ESD: a. Electrical parameters b. ESDS c. Electrical parameters |
3 (0) | X | X |
MIL-PRF-38534 Group C Testing
| Sub Group |
Parameters | Quantity (accept number) |
Class | |
| K | H | |||
| 1 | External visual | 5 (0) | X | X |
| PIND | X | X | ||
| Temperature cycling | X | |||
| Temperature cycling or Thermal shock |
X X |
|||
| Mechanical shock and/or Constant acceleration |
X X |
X X |
||
| Seal (fine and gross) | X | X | ||
| PIND | X | X | ||
| Visual examination | X | X | ||
| End-point electrical | X | X | ||
| 2 | Steady-state life test | 22 (0) or 5 (0) | X | X |
| End-point electrical | X | X | ||
| 3 | Internal water vapor content | 3 (0) or 5 (1) | X | X |
| 4 | Internal visual and mechanical | 2 (0) | X | X |
| Wire bond strength | X | X | ||
| Element shear | X | X | ||
MIL-PRF-38534 Group D Package Related Testing
| Sub Group |
Parameters | Quantity (accept number) |
| 1 | Thermal shock | 5 (0) |
| Stabilization bake | 5 (0) | |
| Lead integrity | 1 (0) | |
| Seal: a. Fine b. Gross |
5 (0) | |
| 2 | Moisture resistance | 5 (0) |
| 3 | Salt atmosphere | 5 (0) |
| 4 | Metal package isolation | 3 (0) |
