BK/GDB-V-1.25A

Effective March 2026 Supersedes October 2021 

Technical Data **2015** 

## GDB 

## 5 mm  x 20 mm Fast-acting glass tube fuses 

## **Applications** 

- Power supplies 

- LED and general Lighting 

- LED/LCD televisions 

- Appliances and white goods 

- Desktops 

Photo is representative 

- Test equipment 

- Set top boxes 

- Battery chargers 

- Printers and peripherals 

## **Product features** 

- Fast-acting, low breaking capacity 

- Optional axial lead option available 

- 5 mm x 20 mm physical size 

- Glass tube with silver-plated (32 mA - 125mA) and nickel plated (160 mA - 10 A) brass endcaps 

- Designed to IEC 60127-2/2 (160 mA - 10 A) 

## **Environmental compliance** 

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**----- Start of picture text -----**<br>
HALOGEN<br>Pb HF<br>RoHS SO FREE<br>• Halogen free for values above 160 mA<br>**----- End of picture text -----**<br>


## **Agency information** 

- cURus recognized: File E19180, Guide JDYX2, JDYX8 

- VDE Approval: File 40014109 

Note: Philippines manufactured parts have cURus approvals only 

**Ordering part number** 

**BK-GDB-1A** Packaging code Family name Ampere rating a ~~l~~ The ordering code is the part number replacing the “.” with a “-” 

## **Packaging prefix** 

- **BLANK:** 5 pieces in tin case 

- **BK-:** 100 pieces in carton. 

- **BK1-:** 1,000 pieces in polybag. 

GDB 5 mm  x 20 mm Fast-acting glass tube fuses 

Technical Data 2015 Effective March 2026 

## **Electrical characteristics** 

|||**1.5 In**||**2.1 In**||**2.75 In**||||**4.0 In**||||**10 In**|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|**Amp rating**||**min**||**max**||**min**||**max**||**min**||**max**||**max**|
|32 mA - 100 mA||60 minutes||30 minutes||10 ms||500 ms||3 ms||100 ms||20 ms|
|125 mA - 6.3 A||60 minutes||30 minutes||50 ms||2 s||10 ms||300 ms||20 ms|
|8 A - 10 A||30 minutes.||30 minutes||50 ms||2 s||10 ms||400 ms||40 ms|



## **Product specifications** 

||**Current**<br>**rating**|**Voltage**<br>**rating**|**Interrupting rating**<br>**(A) at rated voltage**|**Typical DC**<br>**cold resistance1**|**Typical**<br>**melting2**|**Maximum**<br>**voltage drop3**|**Agency**|**approval**|
|---|---|---|---|---|---|---|---|---|
|**Part number**|**(A)**|**(Vac)**|**(50 Hz) Vac**|**(Ohms)**|**I2t (A2sec)**|**(mV)**|**cURus**|**VDE**|
|GDB-32mA|0.032|250|35|290|0.00002|13000|||
|GDB-40mA|0.04|250|35|210|0.00006|11500|||
|GDB-50mA|0.05|250|35|150|0.0001|10500|||
|GDB-63mA|0.063|250|35|113|0.0002|9800|||
|GDB-80mA|0.08|250|35|22|0.0008|3000|||
|GDB-100mA|0.10|250|35|18|0.0013|2800|||
|GDB-125mA|0.125|250|35|11|0.0034|2200|||
|GDB-160mA|0.16|250|35|8.5|0.008|2000|X|X|
|GDB-200mA|0.20|250|35|6.6|0.016|1700|X|X|
|GDB-250mA|0.25|250|35|4.32|0.28|1400|X|X|
|GDB-315mA|0.315|250|35|3.0|0.58|1300|X|X|
|GDB-400mA|0.40|250|35|1.95|0.18|1100|X|X|
|GDB-500mA|0.50|250|35|0.26|0.18|220|X|X|
|GDB-630mA|0.63|250|35|0.20|0.35|220|X|X|
|GDB-800mA|0.80|250|35|0.14|0.67|190|X|X|
|GDB-1A|1.0|250|35|0.118|0.8|200|X|X|
|GDB-1.25A|1.25|250|35|0.083|1.1|200|X|X|
|GDB-1.6A|1.6|250|35|0.058|2.1|190|X|X|
|GDB-2A|2.0|250|35|0.043|5.5|150|X|X|
|GDB-2.5A|2.5|250|35|0.032|7.9|150|X|X|
|GDB-3.15A|3.15|250|35|0.023|16.9|130|X|X|
|GDB-4A|4.0|250|40|0.021|22|130|X|X|
|GDB-5A|5.0|250|50|0.014|42|120|X|X|
|GDB-6.3A|6.3|250|63|0.010|69|120|X|X|
|GDB-8A|8.0|250|80|0.0095|102|120|X|X|
|GDB-10A|10|250|100|0.008|111|120|X|X|



1. DC cold resistance measured at <10% of rated current 

2. Typical melting I[2] t  was measured at listed interrupting rating and rated voltage 

3. Maximum voltage drop was measured at +20 °C ambient temperature at rated current 

2 

www.eaton.com/electronics 

GDB 5 mm  x 20 mm Fast-acting glass tube fuses 

Technical Data 2015 Effective March 2026 

## **Dimensions- mm** Drawing not to scale 

## **Temperature derating curve** 

Operating temperature: -40 °C to +125 °C with proper correction factor applied 

**==> picture [248 x 155] intentionally omitted <==**

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120.0%<br>110.0%<br>100.0%<br>90.0% Coo Peer<br>80.0%<br>70.0% HH HH<br>60.0%<br>-60 -40 -20 0 20 40 60 80 100 120 140<br>Temperature (°C)<br>Derating factor %<br>**----- End of picture text -----**<br>


## **Time vs. current curve** 

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PA Eee<br>Pt<br>wo<br>RAE NE ee<br>PEER<br>0 Le<br>EE HAALAW<br>FV<br>oor LL LUT, TANNA<br>0.01 0.1 1<br>Current (A)<br>Time (seconds)<br>**----- End of picture text -----**<br>


Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 

Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. 

## **Eaton** 

**Electronics Division** 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com/electronics © 2026 Eaton Follow us on social media to get the All Rights Reserved Eaton is a registered trademark. latest product and support information. Printed in USA Publication No. 2015 PCN26016, PCN25035 All other trademarks are property Published April 2026 of their respective owners. £] x<in| Qo