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0201/DFN0603/TSSLP-2-4 0402/DFN1006/SOD-882/TSSLP-2-20 DFN1006-3L/0402-3/SOT-883 DFN1210-6 DFN1510 DFN1610 DFN1610-2 DFN1616-6 DFN1714 DFN2010 DFN2020-3 DFN2020-6 DFN2510P10/SLP2510P8/SFN-10/DSON-10 DFN2510P8 DFN2514 DFN2626-10 DFN3014 DFN3020-10 DFN3313 DFN3314 DFN4120P10 MSOP-08 MSOP-10 SO-14 SOD-323/0805/SC-76-UMD-2 SOD-523/0603/SC-79 SOD-923 SOP-16 SOP-08 SOT-143 SOT-23 SOT-23 SOT-26 SOT-323 SOT-353 SOT-363 SOT-523 SOT-553 SOT-563 SOT-723

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SMF Series(SOD-123FL/SC-77/SMD-2) P4SMF Series(SOD-123FL/SC-77) SMA Series(DO-214AC/SMA/SOD106) SMB Series(DO-214AA) P6SMB Series(DO-214AA) 10BJ Series(DO-214AA) SMC Series(DO-214AB) SMD Series(DO-214AB) 5.0SMD Series(DO-214AB) 6.6SMD Series(DO-214AB) SM5S Series SM8S Series(6600W) 3KP Series(R6) 5KP Series(R6) 15KP Series(R6) 30KP Series(R6) P8S Series(R6) P12S Series(R6) P15S Series(R6) P4KE Series(DO-41) P6KE Series(DO-15) 1.5KE Series(DO-201) AK Series(AK) P4SMA Series （SMA/SOD106） DFN2020-6L

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PPTC Resettable Fuses

Home > PPTC Resettable Fuses

PPTC Resettable Fuses

Information of PPTC
Polymer positive temperature coefficient is referred PPTC. For over-current protector, can palce circuit element. The PPTC element protects the circuit by changing from a low-resistance to a high resistance state in response to an over current.

The selection tips of PPTC/FUSE

1. Determine the following circuit operating parameters:

Normal operating current – I_HOLD

Maximum circuit voltage – V_MAX

Maximum interrupt current – I_MAX

Ambient operating temperature

2. Select the suitable package SMD or DIP.

3. Compare the PTC data sheet ratings for V_MAX and I_MAX to ensure that the circuit parameters do not exceed these ratings.

4. Verify that the ambient operating temperature within close proximity to the device is within its normal operating range. Thermally derate IHOLD and IMAX as necessary.

Part Number	Ih(A) All 0,。5 0.02 0.03 0.04 0.05 0.06 0.08 0.09 0.1 0.11 0.12 0.14 0.145 0.15 0.16 0.17 0.18 0.2 0.25 0.3 0.35 0.4 0.5 0.55 0.6 0.65 0.75 0.8 0.9 1 1.1 1.2 1.25 1.35 1.5 1.6 1.75 1.85 2 2.5 2.6 3 3.75 4 5 6 7 8 9 10 11 12 13 14 Filter Reset	Vmax(Vdc) All 6 8 9 10 12 13.2 15 16 24 30 33 48 60 72 130 250 600 Filter Reset	Imax(A) All 1 3 5 7 10 20 40 50 100 101 Filter Reset	Trip current(A) All 0.15 0.2 0.25 0.3 0.5 0.7 0.75 0.85 1 1.25 1.5 1.95 2 2.2 2.5 3 3.25 3.7 3.75 4 4.5 5 5.5 6 6.75 7.5 8 9 9.25 10 12 12.5 15 18 18.75 20 21 24 25 27 30 33 36 39 40 Filter Reset	Trip time(s) All 0.02 0.08 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.8 1 1.2 1.5 2 2.3 2.4 2.5 3 3.5 4 4.5 4.8 5 5.2 5.5 5.8 6 6.3 7.5 8 9 10 11 12 12.6 12.7 14.5 15 16 18 18.8 20 24 25 30 40 50 Filter Reset	Rmax(Ω) All 0.007 0.008 0.009 0.011 0.012 0.013 0.015 0.02 0.021 0.025 0.035 0.04 0.045 0.048 0.05 0.055 0.06 0.07 0.075 0.08 0.085 0.09 0.1 0.11 0.12 0.13 0.135 0.14 0.15 0.16 0.165 0.17 0.18 0.19 0.2 0.21 0.22 0.23 0.25 0.27 0.3 0.32 0.33 0.345 0.36 0.37 0.385 0.4 0.41 0.42 0.45 0.5 0.6 0.65 0.7 0.75 0.79 0.8 0.85 0.88 0.9 1 1.2 1.3 1.38 1.4 1.6 1.95 2 2.2 2.3 2.5 2.84 3 3.2 3.5 4 4.8 5 5.21 6 6.5 7 7.5 8 9 10 11 12 14 15 16 20 22 35 45 50 60 65 120 160 Filter Reset	Rmin(Ω) All 0.003 0.004 0.005 0.006 0.008 0.01 0.012 0.014 0.015 0.018 0.02 0.03 0.035 0.04 0.05 0.055 0.06 0.065 0.07 0.08 0.09 0.1 0.12 0.14 0.15 0.18 0.2 0.25 0.3 0.31 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.75 0.76 0.8 0.9 1 1.45 1.5 1.6 1.9 2 2.5 2.8 3 3.5 3.6 4 4.1 5 6 7.3 10 12 20 25 30 60 80 Filter Reset	Pdtyp(W) All - 0.075 0.26 0.3 0.38 0.4 0.41 0.45 0.48 0.49 0.5 0.56 0.6 0.7 0.72 0.77 0.8 0.81 0.83 0.88 0.9 0.92 0.94 0.99 1 1.1 1.2 1.21 1.4 1.5 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.8 3 3.2 3.3 3.5 3.6 3.7 4 4.2 4.8 Filter Reset	It(A) All 0.045 0.065 0.08 0.09 0.1 0.12 0.15 0.16 0.18 0.2 0.22 0.24 0.25 0.29 0.3 0.32 0.34 0.37 0.4 0.45 0.46 0.5 0.55 0.6 0.65 0.7 0.75 0.8 1 1.2 1.3 1.5 1.6 1.8 1.95 2 2.2 2.4 2.5 2.7 2.8 3 3.2 3.5 3.7 4 4.2 5 5.2 6 7.5 8 10 12 14 16 18 20 22 24 26 28 Filter Reset	Package All 603 0805 1206 1210 1812 2018 2920 DIP SMD1812 Filter Reset
HL30-110	1.1	30	40	5.5	8	0.2	0.07	0.7	2.2	DIP
HL30-120	1.2	30	40	6	8	0.18	0.08	0.8	2.4	DIP
HL30-135	1.35	30	40	6.75	8	0.16	0.07	0.8	2.7	DIP
HL30-160	1.6	30	40	8	8	0.14	0.06	0.9	3.2	DIP
HL30-200	2	30	40	10	11	0.1	0.04	1.2	4	DIP
HL30-250	2.5	30	40	12.5	11	0.08	0.03	1.2	5	DIP
HL30-300	3	30	40	15	11	0.07	0.03	2	6	DIP
HL30-400	4	30	40	20	12.7	0.06	0.01	2.5	8	DIP
HL30-500	5	30	40	25	14.5	0.05	0.01	3	10	DIP
HL30-600	6	30	40	30	16	0.04	0.005	3.5	12	DIP
HL30-800	8	30	40	40	18.8	0.025	0.005	4	16	DIP
HL30-900	9	30	40	40	20	0.02	0.005	4.2	18	DIP
HL90-185	1.85	72	40	3.7	12.6	0.19	0.08	2.1	3.7
SMD1812P050TF/60	0,。5	60	10	8	0.15			1.5		SMD1812
SMD1206P050TF/24	0.5	24	100	8	0.1	0.75	0.15		1	1206
SMD1206P075TF/16	0.75	16	100	8	0.2	0.09	0.5	-	1.5	1206
SMD2920P075TF/60	0.75	60	40	8	0.3	1	0.1		1.5	2920
SMD1812P260TF/24	2.6	24	40	8	5	0.05	0.015	0.075	5.2	1812
SMD1206P016TFQ	0.16	48	100	1	0.3	5	0.35	0.6	0.45	1206

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Shanghai Leiditech Electronic Technology Co., Ltd., is famous brand in China, leiditech is founded
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PPTC Resettable Fuses

ESD electrostatic protection

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TVS diodes

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GDT gas discharge tube

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