Mfr Part #:

MF-R500

Q: What agency approvals does the MF-R500 have?

cUL (file E174545) and TÜV (file R50366745).

Mfr Name: Bourns

Bourns MF-R500 is a polymeric PTC resettable fuse rated for 30V max voltage and 5A hold current in a radial leaded package.

✓ Total Stock: 30,300 pcs

$ Price Range: $0.24 - $0.55

MF-R500 Available from 3 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Fe Components ✓ Non-Authorised Inventory information	25,000 pcs On Request	25000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
AA2DE ✓ Non-Authorised Inventory information	4,800 pcs On Request	4800 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Spartce Electronics. ✓ Non-Authorised Inventory information	500 pcs On Request	500 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

MF-R500 Description

Short technical summary and product information.

Bourns MF-R500 is a polymeric PTC resettable fuse from the MF-R series. It is designed for overcurrent protection in a compact radial leaded package.

Key electrical specifications include a hold current of 5 A, trip current of 10 A, maximum voltage of 30 V, and maximum interrupt current of 40 A. Initial resistance ranges from 10 mΩ to 30 mΩ at 23°C, with a maximum post-trip resistance of 50 mΩ. The time to trip at 25 A is 14.5 seconds maximum, and typical tripped power dissipation is 3.0 W.

Environmental compliance is robust: RoHS compliant, lead free, and halogen free per Bourns definition (Br<900 ppm, Cl<900 ppm, total <1500 ppm). The fuse holds cUL (file E174545) and TÜV (file R50366745) agency approvals. It operates over -40°C to 85°C and includes a California Proposition 65 warning.

The package is a radial disc, through-hole mount, with lead spacing of 10.2 mm. Dimensions are 17.4 mm length, 3.0 mm width, and 24.9 mm height.

MF-R500 Quick Information

Product Type: PTC Resettable Fuse

Series: MF-R

Canonical Name: Bourns MF-R500 PTC Resettable Fuse

Subcategory: Radial Leaded PTC

MF-R500 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

Lead Free: Lead Free

MF-R500 Estimated Pricing

Qty	Low	High
1+	$0.55	$0.55
10+	$0.50	$0.50
50+	$0.42	$0.42
100+	$0.39	$0.39
250+	$0.35	$0.35
500+	$0.32	$0.32
1,000+	$0.30	$0.30
3,000+	$0.24	$0.24
6,000+	$0.24	$0.24

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

MF-R500 Features

5A hold current with 10A trip current.
30V maximum voltage rating.
Radial leaded through-hole package.
RoHS compliant and halogen free.
cUL and TÜV agency approved.

MF-R500 Applications

Used in power supply overcurrent protection.
Suitable for battery charging circuits.
Ideal for motor and transformer protection.
Applied in consumer electronics and industrial controls.

MF-R500 FAQs

7 frequently asked questions generated from this part’s specifications.

What is the hold current of the Bourns MF-R500?

5 A.

What is the maximum voltage rating?

30 V.

What is the maximum interrupt current?

40 A.

What is the initial resistance range?

10 mΩ to 30 mΩ at 23°C.

What is the time to trip at 25A?

14.5 seconds maximum.

What is the operating temperature range?

-40°C to 85°C.

What agency approvals does the MF-R500 have?