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Western Digital SATA Hard Disk WD400BD
Item Number: WDC-WD400BD-NP-OE
Manufacturer's Part Number: WD400BD |
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Western Digital Caviar 40GB 7.2K SATA Hard Drive WD400BD - New Pull OEM
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Capacity: 40GB
Spindle Speed: 7,200RPM
Interface Type: SATA
Disk Size: 3.5"x1.0" (Low Profile Hard Drive)
Sustained Throughput (MBps):
Average Seek Time (read/write ms): 8.9 / 10.9
Electrical Interface Speed: SATA 300 - 3.0Gbps
On-Board Cache: 2MB |
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These drives will fit in our hard drive trays: |
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WD Caviar SATA/EIDE hard drives are offered in capacities up to 250 GB, with performance geared to advanced and mainstream desktop personal computers. WD Caviar drives are built to the highest standards of quality and reliability because we understand the importance of data that is entrusted to our products.
Compatibility
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| Performance Specifications |
| Rotational Speed |
7,200 RPM (nominal) |
| Buffer Size |
2 MB |
| Average Latency |
4.20 ms (nominal) |
| Contact Start/Stop Cycles |
50,000 minimum |
| Seek Times |
| Read Seek Time |
8.9 ms |
| Write Seek Time |
10.9 ms (average) |
| Track-To-Track Seek Time |
2.0 ms (average) |
| Full Stroke Seek |
21.0 ms (average) |
| Transfer Rates |
| Buffer To Host (Serial ATA) |
300 MB/s (Max) |
| Buffer To Disk |
748 Mbits/s (Max) |
| Physical Specifications |
| Formatted Capacity |
40,020 MB |
| Capacity |
40 GB |
| Interface |
SATA 300 MB/s |
| User Sectors Per Drive |
78,165,360 |
| Physical Dimensions |
| English |
| Height |
1.028 Inches (Max) |
| Length |
5.787 Inches (Max) |
| Width |
4.00 Inches (+/- 0.010 inch) |
| Weight |
1.60 Pounds |
| Metric |
| Height |
26.1 mm (Max) |
| Length |
147 mm (Max) |
| Width |
101.6 mm |
| Weight |
0.73 kg |
| Environmental Specifications |
| Operating Shock (Read) |
65G, 2 ms |
| Non-operating Shock |
350G, 2 ms |
| Acoustics |
| Idle Mode |
30 dBA (average) |
| Seek Mode 0 |
32 dBA (average) |
| Seek Mode 3 |
31 dBA (average) |
| Temperature (English) |
| Operating |
41° F to 131° F |
| Non-operating |
-40° F to 149° F |
| Temperature (Metric) |
| Operating |
5° C to 55° C |
| Non-operating |
-40° C to 65° C |
| Humidity |
| Operating |
5-95% RH non-condensing |
| Non-operating |
5-95% RH non-condensing |
| Altitude (English) |
| Operating |
-1,000 feet to 10,000 feet |
| Non-operating |
-1,000 feet to 40,000 feet |
| Altitude (Metric) |
| Operating |
-305M to 3,050M |
| Non-operating |
-305M to 12,200M |
| Operating Vibration |
| Linear |
10-300 Hz, 3.0G (0 to peak) |
| Random |
10-300 Hz, 0.008 g² / Hz |
| Non-operating Vibration |
| Low Frequency |
5-20 Hz, 0.195 inches (double amplitude) |
| High Frequency |
20-300 Hz, 4.0G (0 to peak) |
| Electrical Specifications |
| 12 VDC Current Requirements |
| Read/Write |
450 mA |
| Idle |
470 mA |
| Standby |
23 mA |
| Sleep |
23 mA |
| 5 VDC Current Requirements |
| Read/Write |
800 mA |
| Idle |
750 mA |
| Standby |
330 mA |
| Sleep |
200 mA |
| Power Dissipation |
| Read/Write |
12.80 Watts |
| Idle |
9.50 Watts |
| Standby |
1.90 Watts |
| Sleep |
1.30 Watts |
Click here to view the manufacturers item description/brochure |
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