C1Q-3

Fuse, Surface Mount, 3 A, Very Fast Acting, 125 V, 63 V, 1206 [3216 Metric], C1Q Series

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: BEL FUSE
Product type: SMD Fuses
SVHC: No SVHC (21-Jan-2025)
Fuse Current: 3A
Product Range: C1Q Series
Fuse Case Style: 1206 [3216 Metric]
Voltage Rating VAC: 125V
Voltage Rating VDC: 63V
Blow Characteristic: Very Fast Acting
Breaking Capacity Current AC: 100A
Breaking Capacity Current DC: 50A

Delivery and price
Units per pack	5000
Price	0.111 €
Current stock	500+
Lead time	30 days

Datasheet

Type C1Q Surface Mount Very Fast-Acting Chip Fuse 

C1Q Series – 1206 Size 

RoHS 2 Compliant 

## **Features** 

- Fast Acting 

- Small size, 1206 SMD 

- Current rating from 250mA to 7A 

- Wide operating temperature range from -55℃ to 125℃ 

- Tape and Reel for automatic SMD placement 

- Compatible with 260℃ IR Pb-free and wave soldering process 

- RoHS 2 compliant (MSL = 1) 

- Halogen Free 

- Lead Free 

## **Applications** 

- Notebook 

- LCD monitor 

- PC computer 

- Office electronic equipment 

- Industrial equipment 

- Medical equipment 

- POE, POE+ 

- LCD / LED monitor 

- Power supply - LCD / LED TV - DC-DC Converter 

LEAD FREE = HALOGEN FREE = 

**Electrical Characteristics** (UL/CSA/STD.248-14) 

## **Safety Agency Approvals** 

|Testing<br>Current|Blow Time|Blow Time|
|---|---|---|
||Minimum|Maximum|
|100%|4 Hrs.|N/A|
|200%|N/A|5 Sec|
|300%|N/A|0.2 Sec|



|Safety<br>Agency|Safety Agency<br>Certificate|Voltage Rating<br>(V)|Ampere Range / Volt<br>@ I.R. ability*|
|---|---|---|---|
||LR39772|250mA-5A/125V AC<br>63V DC<br>7A/63V AC & DC|250mA-5A/125V AC@100A<br>63V DC@50A|
||E20624|||
||E20624||7A/63V AC&DC@50A|
|*I.R.= Interrupting Rating = Short Circuit Rating(Amps)||||



## **Physical Specifications** 

Body : Ceramic Substrate Materials Terminations : Ag / Ni / Sn (100% Lead-free) Element Cover Coating : Lead-free Glass On Fuse : None Marking On Label : "bel", "C1Q", "Current Rating", "Voltage Rating", "Interrupting Rating", "Appropriate Safety Logos" and " ", " "(China RoHS compliant). ~~————<—~~ 

Specifications subject to change without notice 

**belfuse.com/circuit-protection** 

**2** / **4** 

## Type C1Q 

## **Temperature Derating Curve** 

## **Average Time Current Curve** 

## **Electrical Specifications** 

|Catalog<br>Number<br>~~ee~~|Ampere<br>Rating<br>(A)<br>~~ee~~|Nominal<br>Cold<br>Resistance<br>(ohms)<br>~~ee~~|Nominal<br>Volt-drop<br>@100% In<br>(Volt)<br>~~ee~~|Voltage and<br>Interrupting<br>Ratings|Melting I²T<br>@10 In<br>(A² Sec)<br>~~es~~|Nominal<br>Power<br>Dissipation<br>@100% In<br>(W)<br>~~ee~~|Agency Approvals|Agency Approvals|Agency Approvals|
|---|---|---|---|---|---|---|---|---|---|
||||||||~~ee~~|~~ee~~|~~ee~~|
|C1Q 250<br>~~ee~~<br>~~a~~|250mA<br>~~ee~~<br>~~a~~|0.85<br>~~ee~~<br>~~ee~~|0.250<br>~~ee~~|See Table of<br>Safety Approvals on<br>Page 1 for Voltage<br>and associated<br>Interrupting Ratings<br>~~ee~~|0.00003<br>~~es~~<br>~~ee~~|0.06<br>~~ee~~<br>~~ee~~|Y<br>~~ee~~<br>~~ee~~|~~ee~~<br>~~eee~~|Y<br>~~ee~~<br>~~eee~~|
|C1Q 375<br>~~ee~~<br>~~a~~<br>~~ee~~|375mA<br>~~ee~~<br>~~a~~<br>~~ee~~|0.48<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.222<br>~~ee~~<br>~~ee~~||0.00006<br>~~es~~<br>~~ee~~<br>~~ee~~|0.08<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~eee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~eee~~<br>~~ee~~|
|C1Q 500<br>~~a~~<br>~~ee~~<br>~~a~~|500mA<br>~~a~~<br>~~ee~~<br>~~a~~|0.32<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.195<br>~~ee~~||0.00011<br>~~ee ~~<br>~~ee~~<br>~~ee~~|0.10<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~ee~~<br>~~ee~~|~~eee~~<br>~~ee~~<br>~~ee~~|Y<br>~~eee~~<br>~~ee~~<br>~~eee~~|
|C1Q 750<br>~~ee~~<br>~~a~~<br>~~es~~|750mA<br>~~ee~~<br>~~a~~<br>~~ee~~|0.175<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.163<br>~~ee~~<br>~~ee~~||0.00042<br>~~ee~~<br>~~ee~~<br>~~es~~|0.12<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~eee~~<br>~~ee~~|
|C1Q 1<br>~~a ~~<br>~~es~~<br>~~re~~|1A<br> ~~a~~<br>~~ee~~<br>~~a~~|0.124<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.156<br>~~ee~~||0.00096<br>~~ee~~<br>~~es~~<br>~~es~~|0.16<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~eee~~<br>~~ee~~<br>~~eee~~|
|C1Q 1.25<br>~~es~~<br>~~re~~<br>~~es~~|1.25A<br>~~ee~~<br>~~a~~<br>~~ee~~|0.092<br>~~ee~~<br>~~ee~~<br>~~ee ee~~|0.149<br>~~ee~~<br>~~ee~~||0.0020<br>~~es~~<br>~~es~~<br>~~a~~|0.19<br>~~ee~~<br>~~ee~~<br>~~ee~~|Y<br>~~ee~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~eee~~<br>~~ee~~|
|C1Q 1.5<br>~~re ~~<br>~~es~~<br>~~a~~|1.5A<br> ~~a~~<br>~~ee~~<br>~~a~~|0.075<br>~~ee~~<br>~~ee ee~~<br>~~ee~~|0.142<br>~~ee~~||0.0024<br>~~es~~<br>~~a~~<br>~~ee ee~~|0.21<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~eee~~<br>~~ee~~<br>~~eee~~|
|C1Q 2<br>~~es~~<br>~~a~~<br>~~es~~|2A<br>~~ee~~<br>~~a~~<br>~~ee~~|0.054<br>~~ee ee~~<br>~~ee~~<br>~~ee~~|0.140<br>~~ee~~<br>~~ee~~||0.005<br>~~a~~<br>~~ee ee~~<br>~~es~~|0.28<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~eee~~<br>~~ee~~|
|C1Q 2.5<br>~~a ~~<br>~~es~~<br>~~a~~|2.5A<br> ~~a~~<br>~~ee~~<br>~~a~~|0.042<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.138<br>~~ee~~||0.008<br>~~ee ee~~<br>~~es~~<br>~~ee~~|0.35<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~eee~~<br>~~ee~~<br>~~eee~~|
|C1Q 3<br>~~es~~<br>~~a~~<br>~~es~~|3A<br>~~ee~~<br>~~a~~<br>~~ee~~|0.035<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.136<br>~~ee~~<br>~~ee~~||0.020<br>~~es~~<br>~~ee~~<br>~~es~~|0.41<br>~~ee~~<br>~~ee~~<br>~~ee~~|Y<br>~~ee~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~eee~~<br>~~ee~~|
|C1Q 3.5<br>~~a ~~<br>~~es~~<br>~~a~~|3.5A<br> ~~a~~<br>~~ee~~<br>~~a~~|0.030<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.140<br>~~ee~~||0.029<br>~~ee~~<br>~~es~~<br>~~ee~~|0.49<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~eee~~<br>~~ee~~<br>~~eee~~|
|C1Q 4<br>~~es~~<br>~~a~~<br>~~ee~~|4A<br>~~ee~~<br>~~a~~<br>~~ee~~|0.028<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.144<br>~~ee~~<br>~~ee~~||0.038<br>~~es~~<br>~~ee~~<br>~~es~~|0.58<br>~~ee~~<br>~~ee~~<br>~~ee~~|Y<br>~~ee~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee~~<br>~~eee~~<br>~~ee~~|
|C1Q 5<br>~~a ~~<br>~~ee~~<br>~~re~~|5A<br> ~~a~~<br>~~ee~~<br>~~a~~|0.022<br>~~ee~~<br>~~ee~~<br>~~ee~~|0.154<br>~~ee~~||0.075<br>~~ee~~<br>~~es~~<br>~~ee~~|0.77<br>~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~ee ~~<br>~~ee~~<br>~~ee~~|~~ee ~~<br>~~ee~~<br>~~ee~~|Y<br> ~~eee~~<br>~~ee~~<br>~~eee~~|
|C1Q 7<br>~~ee~~<br>~~re~~|7A<br>~~ee~~<br>~~a~~|0.015<br>~~ee~~<br>~~ee~~|0.160<br>~~ee~~||0.116<br>~~es~~<br>~~ee~~|1.12<br>~~ee ~~<br>~~ee~~|~~ee ~~<br>~~ee~~|Y<br> ~~ee~~<br>~~ee~~|~~ee~~<br>~~eee~~|



Specifications subject to change without notice 

**Bel Fuse Inc.** 206 Van Vorst Street Jersey City, NJ 07302 USA 

+1 201.432.0463 Bel.US.CS@belf.com **belfuse.com/circuit-protection** 

© 2018 Bel Fuse, Inc. 

Rev. C1Q Nov2018 

**3** / **4** 

## Type C1Q 

## **Environmental Specifications** 

|Shock Resistance|MIL-STD-202G, Method 213B, Test Condition 1<br>(100 G's peak for 6 milliseconds; Sawtooth waveform)|
|---|---|
|Vibration Resistance|MIL-STD-202G, Method 201A (10-55 Hz, 0.06 inch, total excursion).|
|Salt Spray Resistance|MIL-STD-202G, Method 101E, Test Condition B (48 hrs.).|
|Insulation Resistance|MIL-STD-202G, Method 302, Test Condition A<br>(After Opening) 10,000 ohms minimum.|
|Solderability|MIL-STD-202G, Method 208H|
|Resistance to solder Heat|MIL-STD-202G, Method 210F, Test Condition C. Top Side (260℃,20 sec)<br>MIL-STD-202G, Method 210F, Test Condition D. Bottom Side (260℃,10 sec)|
|Thermal Shock|MIL-STD-202G, Method 107G, Test Condition B (-65℃to +125℃).|
|Operating Temperature|-55℃to +125℃|
|Moisture Sensitivity Level|1 (According to IPC J-Std-020)|



## **Soldering Parameters** 

|IR Reflow Profile (IPC/JEDEC J-STD-020D)|IR Reflow Profile (IPC/JEDEC J-STD-020D)|
|---|---|
|**Preheat & Soak**<br>Temperature min (Tsmin)<br>Temperature max (Tsmax)<br>Time (Tsminto Tsmax) (ts)|150℃<br>200℃<br>60-120 seconds|
|Average ramp-up rate (Tsmaxto Tp)|3℃/second max.|
|Liquidous temperature (TL)<br>Time at liquidous(tL)|217℃<br>60-150 seconds|
|Peak temperature (Tp)|260℃max|
|Time (tp) within 5℃of the specified<br>classification temperture (Tc)|30 seconds|
|Average ramp-down rate (Tpto Tsmax)|6℃/second max.|
|Time 25℃to peak temperature|8 minutes max.|



|Lead-free Wave Soldering Profile||liot<br>—1SEC—|
|---|---|---|
|Wave Soldering Parameter<br>Average ramp-up rate<br>Heating rate during preheat<br>Final preheat temperature<br>Peak temperature Tp<br>Time within +0℃/ -5℃of actual<br>peak temperature<br>Ramp-down rate|200℃/ second<br>typical 1 - 2℃/ second<br>Max 4℃/ second<br>within 125℃of soldering<br>temperature<br>260℃<br>10 seconds<br>5℃/ second max.|**Fuse FGNO Explanation**<br>260G ssazsrexc<br>- 2ND WAVE<br>—<br>1STWAVE<br>\<br>S<br>Lu<br>|<br>1 \ 5°G/SEC<br>oc<br>ot<br>=)<br>'<br>'<br>9<br>1<br>!<br>1<br>ie<br>200°C/SEC}<br>||<br>oc<br>tot<br>1<br>LU<br>'<br>'<br>'<br>oO<br>tot<br>1<br>100+ ------<br>=<br>itt<br>}<br>Lu<br>'<br>'<br>'<br>'<br>E<br>tecsec!<br>$$!<br>25<br>tion<br>4<br>15°<br>100|



Specifications subject to change without notice 

**Bel Fuse Inc.** 

+1 201.432.0463 Bel.US.CS@belf.com **belfuse.com/circuit-protection** 

206 Van Vorst Street Jersey City, NJ 07302 USA 

© 2018 Bel Fuse, Inc. 

Rev. C1Q Nov2018 

**4** / **4** 

## Type C1Q 

## **Fuse FGNO Explanation 0685 - [XXXX] -XX [XXXX]=Ampere Rating; XX=See Ordering Information as below** 

|Fraction|Decimal|Milliamps|Bel FGNO[XXXX]||Fraction|Decimal|Amps|Bel FGNO[XXXX]|
|---|---|---|---|---|---|---|---|---|
|1/4|0.250|250|0250|||1.0|1|1000|
|3/8|.375|375|0375||1-1/4|1.25|1.25|1250|
|1/2|.500|500|0500||1-1/2|1.50|1.5|1500|
|3/4|.750|750|0750|||2.0|2|2000|
||||||2-1/2|2.5|2.5|2500|
|||||||3.0|3|3000|
||||||3-1/2|3.5|3.5|3500|
|||||||4.0|4|4000|
|||||||5.0|5|5000|
|||||||7.0|7|7000|



## **Mechanical Dimensions** 

## **Ordering Information** 

## **Packaging** 

|Packaging Tape & Reel|Packaging Specification|Quantity|Quantity & Packaging Code|
|---|---|---|---|
|8 mm wide tape with 7 inches Diameter reel|EIA Standard 481-E|5000|0685-XXXX-01|



## Specifications subject to change without notice 

**Bel Fuse Inc.** 206 Van Vorst Street Jersey City, NJ 07302 USA 

+1 201.432.0463 Bel.US.CS@belf.com **belfuse.com/circuit-protection** 

© 2018 Bel Fuse, Inc. 

Rev. C1Q Nov2018

Updated at June 10, 2026

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