B59754B0120A070 PTC resettable fuse rated for 420V max (380V rated) with 50mA hold current and 100mA trip current. Supplied in a radial disc package with 5.00mm lead spacing.
Mfr Part #:

B59754B0120A070

Available from 1 distributors
Mfr Name: TDK Corporation
TDK Corporation
PTC resettable fuse rated for 420V max (380V rated) with 50mA hold current and 100mA trip current. Supplied in a radial disc package with 5.00mm lead spacing.
Total Stock: 118 pcs
$ Price Range: $1.79 - $2.43

B59754B0120A070 Available from 1 distributor

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Non-Authorised
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118 pcs
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B59754B0120A070 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Current - Hold (Ih)
Current - Max
Current - Trip (It)
Delivery Mode
Height
Lead Spacing
Lead Style
Mounting Type
Operating Temperature
Reference Temperature
Resistance
Resistance - Min
Resistance - Typical (Post Trip)
Resistance Tolerance
Switching Cycles (Typ.)
Tape & Reel
Time to Trip
Type
Voltage
Voltage - Rated

B59754B0120A070 Description

Short technical summary and product information.

TDK B59754B0120A070 is a ceramic PTC resettable fuse designed for overcurrent and short-circuit protection in through-hole applications. It is rated for a maximum voltage of 420V and a rated voltage of 380V, with a hold current (Ih) of 50mA and a trip current (It) of 100mA. The device can handle a maximum current of 2.0A and typically trips within 3 seconds at maximum voltage and current. Its initial resistance is 150Ω, with a minimum resistance of 68Ω and a resistance tolerance of ±25%.

 

The fuse operates over a temperature range of 0°C to 60°C at Vmax and -40°C to 125°C at 0V, with a typical reference temperature of 120°C. It is designed for 100 typical switching cycles. The component has UL approval to UL 1434 at 420V max and 380V rated voltage (file number E69802). Lead-free terminals are standard.

 

Mechanically, the resettable fuse comes in a radial disc package with a body size of 12.50mm x 7.00mm, a seated height of 16.50mm, and 5.00mm lead spacing. It is supplied in cardboard strips (standard), with cardboard tape reel or AMMO pack available on request. The lead style is leaded, and the mounting type is through hole.

B59754B0120A070 Quick Information

Product Type: PTC Resettable Fuse
Series: B597
Canonical Name: Ceramic PTC Resettable Fuse, 420V Max, 50mA Hold, Radial Disc
Subcategory: Ceramic PTC Resettable Fuse

B59754B0120A070 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

B59754B0120A070 Estimated Pricing

Qty Low High
1+ $2.43 $2.43
5+ $2.16 $2.16
10+ $2.06 $2.06
25+ $1.94 $1.94
50+ $1.86 $1.86
100+ $1.79 $1.79

Estimated market price range - modelled values for guidance only, not live distributor offers.

B59754B0120A070 Features

  • Ceramic PTC resettable fuse for overcurrent protection.
  • Rated for 420V maximum with 380V rated voltage.
  • Holds 50mA, trips at 100mA.
  • 2.0A maximum current, 3s trip time.
  • Lead-free terminals and UL 1434 approved.

B59754B0120A070 Applications

  • Overcurrent protection in high-voltage power supplies.
  • Short-circuit protection for industrial control circuits.
  • Resettable protection for electronic circuit boards.
  • Use in AC/DC power conversion stages.

B59754B0120A070 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the B59754B0120A070?

The maximum voltage is 420V and the rated voltage is 380V.

What are the hold and trip currents?

The hold current (Ih) is 50mA and the trip current (It) is 100mA.

How quickly does this resettable fuse trip?

The typical time to trip is 3 seconds at Vmax and Imax.

What is the maximum current rating?

The maximum current is 2.0A.

What is the initial resistance of the fuse?

The initial resistance is 150Ω, with a minimum resistance of 68Ω and tolerance of ±25%.

What operating temperature range does it support?

At Vmax the operating temperature is 0°C to 60°C; at 0V it is -40°C to 125°C.

What is the package type and size?

The fuse comes in a radial disc through-hole package with body size 12.50mm x 7.00mm, seated height 16.50mm, and 5.00mm lead spacing.

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