1812L110/33MR Littelfuse Inc, 1812L110/33MR Datasheet - Page 4

• Manufacturer Part Number: 1812L110/33MR
• Description: PTC RESETTABLE 33V 1.10A 1812L
• Manufacturer: Littelfuse Inc
• Series: POLYFUSE® 1812Lr

Specifications of 1812L110/33MR

• Package / Case: 1812 (4532 Metric)
• R Min/max: 0.060 ~ 0.200 Ohm
• Voltage - Max: 33V
• Time To Trip: 0.5s
• Current - Hold (ih) (max): 1.1A
• Current - Trip (it): 1.95A
• Current - Max: 20A
• Hold Current: 1.1 Amps
• Trip Current: 1.95 Amps
• Current Rating (max): 20 Amps
• Resistance: 0.2 Ohms
• Maximum Voltage: 33 VoltsDC
• Termination Style: SMD/SMT
• Mounting Style: SMD/SMT
• Dimensions: 4.37 mm L x 3.07 mm W
• Holding Current: 1.1A
• Tripping Current: 1.95A
• Initial Resistance Max: 0.2ohm
• Operating Voltage: 33VDC
• Ptc Fuse Case: 1812
• External Depth: 2mm
• Initial Resistance Min: 0.06ohm
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1812L110/33MR; F3486TR

Bottom
*Note: Some devices in this product series may have “–C“ in the Part Number. The “–C“ should be omitted when placing orders for the device.
1812L Series
1812L075/24 0.17
1812L075/33 0.17
1812L150/24 0.17
1812L110/33 0.17
1812L150/12 0.17
1812L160/12 0.17
View
1812L050
1812L075
1812L110/16
1812L200
1812L260
1812L125
1812L150
1812L160
1812L110
1812L125/6
Dimensions
View
Number*
Top
1812L014
1812L020
1812L010
Part
MARKING CODE VARIES
WITH AMPERAGE AND VOLTAGE RATING
(See Electrical Characteristics Table)
SHOWN ARE:
- 1.1A/6V RATING (LEFT)
- 1.1A/33V RATING (RIGHT)
–C
–C
–C
–C
–C
–C
–C
–C
D
110
110
A
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Min.
0.17
0.17
0.17
0.17
0.17
0.17
0.17
0.17
0.17
0.17
0.17
0.17
0.17
Inches
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
B
E
Layout
A
Pad
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
4.37
mm
1.78mm
(.070”)
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
4.73
POLYFUSE
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
0.12
3.45 mm
(.135”)
110
-33
Inches
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
0.13
Surface Mount > 1812L Series
B
View
Side
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
3.07
®
Revised: October 24, 2008
mm
3.15 mm
(.124”)
Resettable PTCs
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
3.41
C
0.03
0.03
0.02
0.02
0.02
0.03
0.03
0.02
0.03
0.05
0.03
0.02
0.02
0.03
0.03
0.02
0.03
0.03
0.03
Inches
0.05
0.08
0.04
0.03
0.03
0.06
0.06
0.03
0.05
0.08
0.05
0.03
0.03
0.05
0.07
0.03
0.05
0.05
0.05
C
0.75
0.75
0.55
0.75
0.75
0.75
0.75
0.45
0.75
0.75
0.81
0.5
0.5
0.5
0.4
0.8
0.4
0.8
1.2
Please refer to www.littelfuse.com/series/1812L.html for current information.
mm
0.75
0.75
0.71
0.75
0.71
0.75
1.25
1.95
1.55
1.55
1.25
1.25
1.25
1.25
1.34
1.8
1.2
1
2
Inches mm
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
D
Specifications are subject to change without notice.
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.30
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.01
Min Max. Min. Max.
Inches
0.03
0.03
0.03
0.02
0.02
0.03
0.03
0.02
0.03
0.03
0.02
0.03
0.03
0.03
0.03
0.03
0.03
0.02
0.02
E
©2008 Littelfuse, Inc.
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
mm
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.65
0.5
0.5
0.5
0.5
0.5
0.5