1812L075/33DR Littelfuse Inc, 1812L075/33DR Datasheet - Page 3

• Manufacturer Part Number: 1812L075/33DR
• Description: PTC RESETTABLE 33V 750MA 1812L
• Manufacturer: Littelfuse Inc
• Series: POLYFUSE® 1812Lr

Specifications of 1812L075/33DR

• Package / Case: 1812 (4532 Metric)
• R Min/max: 0.110 ~ 0.400 Ohm
• Voltage - Max: 33V
• Time To Trip: 0.2s
• Current - Hold (ih) (max): 750mA
• Current - Trip (it): 1.5A
• Current - Max: 20A
• Hold Current: 0.75 Amp
• Trip Current: 1.5 Amps
• Current Rating (max): 20 Amps
• Resistance: 0.4 Ohms
• Maximum Voltage: 33 VoltsDC
• Termination Style: SMD/SMT
• Mounting Style: SMD/SMT
• Current Rating: 20 Amps
• Dimensions: 4.37 mm L x 3.07 mm W
• Operating Temperature Range: - 40 C to + 85 C
• Holding Current: 750mA
• Tripping Current: 1.5A
• Initial Resistance Max: 0.4ohm
• Operating Voltage: 33VDC
• Ptc Fuse Case: 1812
• External Depth: 1.55mm
• Initial Resistance Min: 0.11ohm
• 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: 1812L075/33DR; F3355TR

Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/1812L.html for current information.
Note: If reflow temperatures exceed the recommended profile,
©2008 Littelfuse, Inc.
Soldering Parameters
Physical Specifications
Terminal Material
Lead Solderability
Condition
Peak Temp/ Duration Time
Time above liquids (TAL) 220°C
Preheat 120°C~ 180°C
Storage Condition
oven, N
solvents.
devices may not meet the performance requirements.
2
environment for lead–free
Solder-Plated Copper (Solder Material:
Matte Tin (Sn))
Meets EIA Specification RS186-9E, ANSI/
J-STD-002 Category 3.
Reflow
260°C / 10 Sec
60 Sec ~ 100 Sec
50 Sec ~ 150 Sec
0°C~35°C, < = 70%RH
Surface Mount > 1812L Series
POLYFUSE
Revised: October 24, 2008
®
Resettable PTCs
Operating/Storage
Temperature
Maximum Device Surface
Temperature in Tripped State
Passive Aging
Humidity Aging
Thermal Shock
Solvent Resistance
Vibration
Moisture Level Sesitivity
Environmental Specifications
260
220
180
120
0
Preheating
50 to 150
Soldering
60 to 100
Time(s)
-40°C to +85°C
125°C
+85°C, 1000 hours
-/+5% typical resistance change
+85°C, 85% R.H.,1000 hours
-/+5% typical resistance change
MIL–STD–202, Method 107G
+85°C/-40°C 20 times
-30% typical resistance change
MIL–STD–202, Method 215
No change
MIL–STD–883C, Method 2007 .1,
Condition A
No change
Level 2, J–STD–020C
120
Cooling
1812L Series