PTC Resettable Fuses

PTC Resettable Fuses Product Dimensions
Size 3216mm/1206mils

Part number	A	B	C	D	E
	Max.	Max.	Max.	Min.	Min.
LP-NSM005	3.50	1.80	0.85	0.25	0.10
LP-NSM012	3.50	1.80	0.85	0.25	0.10
LP-NSM016	3.50	1.80	0.85	0.25	0.10
LP-NSM020	3.50	1.80	0.85	0.25	0.10
LP-NSM035	3.50	1.80	0.85	0.25	0.10
LP-NSM050	3.50	1.80	0.85	0.25	0.10
LP-NSM075	3.50	1.80	1.00	0.25	0.10
LP-NSM110	3.50	1.80	1.30	0.25	0.10
LP-NSM150	3.50	1.80	1.30	0.25	0.10
LP-NSML150	3.50	1.80	0.70	0.25	0.10
LP-NSML175	3.50	1.80	0.70	0.25	0.10
LP-NSML200	3.50	1.80	0.70	0.25	0.10
LP-NSML260	3.50	1.80	1.00	0.25	0.10
LP-NSML300	3.50	1.80	1.40	0.25	0.10
LP-NSML350	3.50	1.80	1.40	0.25	0.10

Thermal Derating Chart-IH(A)
Size 3216mm/1206mils

Part number	Maximum ambient operating temperatures(℃)
	-40	-20	0	20	25	40	50	60	70	85
LP-NSM005	0.09	0.08	0.06	0.05	0.05	0.04	0.036	0.033	0.029	0.02
LP-NSM012	0.19	0.16	0.14	0.13	0.125	0.10	0.09	0.08	0.07	0.04
LP-NSM016	0.25	0.20	0.18	0.16	0.16	0.14	0.12	0.11	0.09	0.06
LP-NSM020	0.31	0.26	0.22	0.21	0.20	0.18	0.16	0.15	0.13	0.07
LP-NSM035	0.51	0.46	0.39	0.36	0.35	0.30	0.27	0.26	0.20	0.16
LP-NSM050	0.77	0.64	0.56	0.52	0.50	0.45	0.40	0.35	0.32	0.23
LP-NSM075	1.12	1.01	0.88	0.78	0.75	0.66	0.58	0.53	0.46	0.33
LP-NSM110	1.61	1.44	1.27	1.12	1.10	0.94	0.85	0.77	0.63	0.48
LP-NSM150	2.03	1.80	1.63	1.55	1.50	1.24	1.11	1.03	0.88	0.69
LP-NSML150	2.01	1.77	1.62	1.53	1.50	1.22	1.12	1.04	0.87	0.61
LP-NSML175	2.34	2.05	1.89	1.80	1.75	1.44	1.31	1.20	1.00	0.72
LP-NSML200	2.68	2.33	2.15	2.03	2.00	1.66	1.49	1.37	1.14	0.80
LP-NSML260	3.49	3.05	2.82	2.63	2.60	2.15	1.93	1.78	1.49	1.04
LP-NSML300	4.03	3.51	3.26	3.04	3.00	2.49	2.23	2.06	1.71	1.20
LP-NSML350	4.70	4.10	3.80	3.55	3.50	2.90	2.60	2.40	2.00	1.40

Typical Time-to-Trip Charts at 25℃ 

Electrical Characteristics at 25℃
Size 3216mm/1206mils

Part number	IH	IT	Vmax	Imax	Max.Time-to-trip		Pdtyp	Rmin	R1max
	(A)	(A)	(V)	(A)	(A)	(S)	(W)	(Ω)	(Ω)
LP-NSM005	0.05	0.15	60	10	1.0	1.20	0.6	2.000	50.000
LP-NSM012	0.125	0.29	30	20	1.0	0.20	0.6	1.500	6.000
LP-NSM016	0.16	0.37	30	20	1.0	0.30	0.6	1.200	4.500
LP-NSM020	0.20	0.40	16	40	8.0	0.05	0.6	0.600	2.500
LP-NSM035	0.35	0.75	6	40	8.0	0.10	0.6	0.300	1.200
LP-NSM050	0.50	1.00	6	40	8.0	0.10	0.6	0.150	0.700
LP-NSM075	0.75	1.50	6	40	8.0	0.20	0.6	0.100	0.290
LP-NSM110	1.10	2.20	6	40	8.0	0.30	0.6	0.055	0.210
LP-NSM150	1.50	3.00	6	40	8.0	1.00	0.6	0.040	0.120
LP-NSML150	1.50	3.00	6	50	8.00	5.00	1.2	0.010	0.065
LP-NSML175	1.75	3.50	6	50	8.00	5.00	1.2	0.010	0.060
LP-NSML200	2.00	4.00	6	50	8.00	5.00	1.2	0.008	0.040
LP-NSML260	2.60	5.20	6	50	8.00	5.00	1.2	0.004	0.025
LP-NSML300	3.00	6.00	6	50	8.00	5.00	1.2	0.003	0.018
LP-NSML350	3.50	7.00	6	50	8.00	5.00	1.2	0.002	0.014

IH=Hold current: maximum current at which the device will not trip at 25℃ still air.
IT=Trip current: minimum current at which the device will always trip at 25℃ still air.
Vmax=Maximum voltage device can withstand without damage at rated current.
Imax=Maximum fault current device can withstand without damage at rated voltage.
Ttrip=Maximum time to trip at assigned current.
Pdtyp=Typical power dissipation: typical amount of power dissipated by the device when in state air environment.
Rmin=Minimum device resistance at 25℃ prior to tripping.
R1max=Maximum device resistance measured in the nontripped state 1 hour post reflow.
Marking System                               

Part Numbering System

Test Procedures And Requirements

Test	Test Conditions	Accept/Reject Criteria
Resistance	In still air @ 25℃	Rmin≤R≤Rmax
Time to Trip	Specified current, Vmax, 25℃	T≤maximum Time to Trip
Hold Current	30min, at IH	No trip
Trip Cycle Life	Vmax, Imax, 100cycles	No arcing or burning
Trip Endurance	Vmax, 24hours	No arcing or burning

Packaging and Marking Information
Size 3216mm/1206 mils

Part number	Tape& Reel Quantity	Tape spc code	Part Marking	Recommended Pad Layout Figures [mm(In.)]						Agency Recognition
				Dimension A(Nom.)		Dimension B(Nom.)		Dimension C(Nom.)
LP-NSM005	4000	1206A	/	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	Pending
LP-NSM012	4000	1206A	P	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSM016	4000	1206A	T	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSM020	4000	1206A	C	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSM035	4000	1206A	W	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSM050	4000	1206A	A	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSM075	4000	1206A	Y	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSM110	3500	1206B	O	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSM150	3500	1206B	N	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSML150	4000	1206A	I	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSML175	4000	1206A	J	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSML200	4000	1206A	F	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSML260	4000	1206A	K	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	UL,CSA,TUV
LP-NSML300	4000	1206A	L	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	Pending
LP-NSML350	3500	1206B	H	1.80	(0.071)	1.00	(0.041)	1.80	(0.071)	Pending

* Recommended reflow methods: IR, Vapor phase oven, hot air oven, wave solder.
* Devices can be cleaned using standard industry methods and solvents.
Notes:
If reflow temperatures exceed the recommended profile,
devices may not meet the performance requirements.
Tape Specification And Reel Dimensions  

Tape spc code	W	P0	P1	P2	A	bB	D	F	E	T	K
1206(A)	8.00±0.20	4.00±0.10	4.00±0.10	2.00±0.05	1.77±0.10	3.40±0.10	1.55±0.05	3.50±0.10	1.75±0.10	0.22±0.05	1.04±0.10
1206(B)	8.00±0.20	4.00±0.10	4.00±0.10	2.00±0.05	1.77±0.10	3.40±0.10	1.55±0.05	3.50±0.10	1.75±0.10	0.22±0.05	1.26±0.10

Reel Dimensions

Tape spc code	A	N	W1	W2
1206(A)	180+0/-1.5	60+1/-0	9.0+1/-0	13.0+1/-0
1206(B)	180+0/-1.5	60+1/-0	9.0+1/-0	13.0+1/-0

BBB

Storage

The maximum ambient temperature shall not exceed 40℃. 
Storage temperatures higher than 40℃ could result in the deformation of packaging materials. 
The maximum relative humidity recommended for storage is 70%. 
High humidity with high temperature can accelerate the oxidation of the solder plating on the termination and reduce the solderability of the components. 
Sealed plastic bags with desiccant shall be used to reduce the oxidation of the termination and shall only be opened prior to use. 
The products shall not be stored in areas where harmful gases containing sulfur or chlorine are present. 

Warning:

PPTC devices are intended for protection against occasional over-current or over-temperature fault conditions, and should not be used when repeated fault conditions are anticipated. Operation beyond maximum ratings or improper use may result in device damage and possible electrical arcing and flame.

Notes:

The specification is intended to present application, product and technical data to assist the user in selecting PPTBB

Resource: http://www.wayonpptc.com/ptc-resettable-fuses.html