LITTELFUSE 30R185, 30R160, 30R135, 30R110, 30R090 Datasheet

Resettable PTCs

Radial Leaded PTC

30R Series

®

•The 30R Series Resettable devices utilize a unique polymer-based, Positive Temperature Coefficient (PTC) material to protect electrical circuits against overcurrent conditions.

•In normal operation, the 30R Series PTC has many conductive paths and a very low resistance. In an overcurrent condition, the temperature of the polymer material rises. This dramatically reduces the conductive paths resulting in an immediate rise in resistance. In this condition, the device provides circuit protection by significantly limiting the flow of current. However, once the cause of the initial overcurrent condition

is eliminated, the 30R Series PTC cools down and resets to a low resistance value permitting the normal current flow to resume.

•The 30R Series is a 30V Radial Leaded Device with a 40A Short Circuit Rating.

AGENCY APPROVALS: Recognized under the Components Program of Underwriters Laboratory and the Component Acceptance Program of CSA. TUV approved.

AGENCY FILE NUMBERS: UL E183209, CSA LR 108832

PHYSICAL SPECIFICATIONS:

Materials: Leads

30R090-250: Tin plated copper-clad steel, 24 AWG (0.020" Dia.)

30R300-900: Tin plated copper, 20 AWG (0.032" Dia.)

Lead Solderability: MIL-STD-202, Method 208E

Coating: Thermoset Coating

Device Labeling: Device is marked with the letter ‘L’, amperage rating, voltage rating & date code.

Packaging: Standard bulk packaging is 500 pieces per container. Optional tape and reel packaging per EIA 486-B is also available.

Standard reel quantities:

	Part	Reel	Part	Reel
	Number	Quantity	Number	Quantity
	R30R090		R30R300	1500
			R30R400
	R30R110
			30R500
	R30R135	3000
			30R600	Bulk Only
	R30R160
			30R700	500 Per
	R30R185
			30R800	Container
	R30R250
			30R900

ENVIRONMENTAL SPECIFICATIONS:

Passive Aging: 85°C, 1000 Hours. ±5% typical resistance change.

Humidity Aging: 85°C, 85% R.H., 1000 hours. ±5% typical resistance change.

Thermal Shock: 85°C / –40°C, 20 times. ±10% typical resistance change.

Vibration: MIL-STD 202, Method 201. No resistance change.

Mechanical Shock: MIL-STD-202, Method 213 test condition I (100 g’s, 6 sec.). No resistance change.

Max. Surface Temperature: 125°C

Operating/Storage Temperature: –40°C to 85°C

Rerating Curve for 30R Series

RatedofCurrent	200
	100
	150
Percentage	50
	0

-40 -30 -20 -10	0	10	20	30	40	50	60	70	80	90
		Temperature (°C)

252

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