SRR4018-270Y Bourns Inc., SRR4018-270Y Datasheet - Page 2

• Manufacturer Part Number: SRR4018-270Y
• Description: INDUCTOR POWER 27UH 0.77A 4018
• Manufacturer: Bourns Inc.
• Series: SRR4018r
• Type: Ferrite Corer

Specifications of SRR4018-270Y

• Inductance: 27µH
• Tolerance: ±30%
• Current: 770mA
• Current - Saturation: 600mA
• Shielding: Shielded
• Dc Resistance (dcr): 370 mOhm Max
• Q @ Freq: 7 @ 2.52MHz
• Self Resonant Freq: 23MHz
• Package / Case: 0.189" L x 0.189" W x 0.071" H (4.80mm x 4.80mm x 1.80mm)
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 125°C
• Frequency - Test: 100kHz
• Material - Core: Ferrite
• Applications: Power Supplies
• Product: Inductors
• Test Frequency: 2.52 MHz
• Maximum Dc Current: 0.77 Amp
• Maximum Dc Resistance: 370 mOhms
• Self Resonant Frequency: 23 MHz
• Q Minimum: 7
• Dimensions: 4.8 mm W x 4.8 mm L x 1.8 mm H
• Operating Temperature Range: - 40 C to + 125 C
• Termination Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Temperature Rise: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SRR4018-270Y

REV. 10/08
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Packaging Specifications
Soldering Profile
275
225
175
125
SRR4018 Series - Shielded SMD Power Inductors
Surface Mount Chip Inductor Capability Matrix
75
25
0
150°C
<1> Maximum of 10 seconds between
+255°C and +260°C
END
50
(7.00)
178.0
DIA.
Ramp Up
3°C/second maximum
(.827 ± .032)
21.0 ± 0.8
NO COMPONENT
(7.87)
120 - 150 seconds
200
(.511)
13.0
100
DIA.
(.079 ± .020)
2.0 ± 0.5
190°C
Time (seconds)
<1> 255°C
220°C
150
10 seconds minimum
USER DIRECTION OF FEED
6R8
QTY: 800 PCS. PER REEL
(.551 + 0)
14.0 + 0
(.511)
(.650)
13.0
DIA.
16.5
(.315)
8.0
seconds
60 - 90
COMPONENTS
200
6R8
260°C peak
(1.969 - 0)
50.0 - 0
6R8
250
Ramp Down
6°C/second
maximum
(.157)
4.0
Rev. 02/22/05
6R8
300
Electrical Schematic
DIMENSIONS:
NO COMPONENT
(15.75)
400
START
LCR METER
(INCHES)
MM