MF-R600-0-99 Equivalent & Substitute Parts

Part Overview

The MF-R600-0-99 is a polymeric PTC resettable fuse manufactured by Bourns Inc., rated for 30V at 6A hold current with through-hole radial disc packaging. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical performance and mechanical compatibility to ensure direct replacement capability in existing circuit designs.

Key Parameters

Parameter	Value
Voltage - Max	30V
Current - Hold (Ih) (Max)	6 A
Current - Trip (It)	12 A
Current - Max	40 A
Time to Trip	16 s
Resistance - Initial (Ri) (Min)	5 mOhms
Resistance - Post Trip (R1) (Max)	40 mOhms
Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial, Disc
Size / Dimension	0.760" L x 0.118" W (19.30mm x 3.00mm)
Lead Spacing	0.402" (10.20mm)
Type	Polymeric

Substitute Part Grouping Explanation

Substitution eligibility for the MF-R600-0-99 is determined by strict equivalence across the following critical parameters:

Voltage rating: 30V maximum
Current hold rating: 6A maximum
Current trip rating: 12A
Maximum current: 40A
Time to trip: 16 seconds
Initial resistance: 5 mOhms minimum
Post-trip resistance: 40 mOhms maximum
Operating temperature range: -40°C to 85°C
Mounting configuration: Through-hole radial disc
Physical dimensions and lead spacing: 0.760" L x 0.118" W with 0.402" lead spacing

All identified substitute parts match these parameters exactly. Substitution is valid only when all electrical and mechanical specifications align with the values listed above.

Parameter Comparison

Parameter	MF-R600-0-99 (Main)	MF-R600	MF-R600-0-14	PFRA.600
Manufacturer	Bourns Inc.	Bourns Inc.	Bourns Inc.	SCHURTER Inc.
Product Status	Obsolete	Active	Active	Active
Voltage - Max	30V	30V	30V	30V
Current - Hold (Ih) (Max)	6 A	6 A	6 A	6 A
Current - Trip (It)	12 A	12 A	12 A	12 A
Current - Max	40 A	40 A	40 A	40 A
Time to Trip	16 s	16 s	16 s	16 s
Resistance - Initial (Ri) (Min)	5 mOhms	5 mOhms	5 mOhms	5 mOhms
Resistance - Post Trip (R1) (Max)	40 mOhms	40 mOhms	40 mOhms	40 mOhms
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial, Disc	Radial, Disc	Radial, Disc	Radial, Disc
Size / Dimension	0.760" L x 0.118" W (19.30mm x 3.00mm)	0.760" L x 0.118" W (19.30mm x 3.00mm)	0.760" L x 0.118" W (19.30mm x 3.00mm)	0.760" L x 0.118" W (19.30mm x 3.00mm)
Lead Spacing	0.402" (10.20mm)	0.402" (10.20mm)	0.402" (10.20mm)	0.402" (10.20mm)
Type	Polymeric	Polymeric	Polymeric	Polymeric
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Approval Agency	cURus, TUV	cURus, TUV	cUL, cURus, TUV, UL	cURus, TUV

Engineering Selection Recommendations

All three substitute parts—MF-R600, MF-R600-0-14, and PFRA.600—provide direct electrical and mechanical equivalence to the obsolete MF-R600-0-99. Selection among active alternatives should be based on the following factors:

MF-R600 (Bourns Inc.) is the base product number variant with active status and bulk packaging availability. This part maintains full parametric equivalence and is suitable for standard applications requiring the 30V 6A polymeric PTC resettable fuse specification.

MF-R600-0-14 (Bourns Inc.) carries additional automotive-grade certification (AEC-Q200) and expanded approval agency coverage (cUL, cURus, TUV, UL). This variant is appropriate for applications requiring automotive qualification or enhanced regulatory compliance.

PFRA.600 (SCHURTER Inc.) provides cross-manufacturer equivalence with identical electrical and mechanical specifications. This option is suitable for applications where supplier diversification or SCHURTER component integration is preferred.

All three parts are RoHS3 compliant and REACH unaffected, meeting current environmental regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MF-R600-0-99 be directly replaced with MF-R600?

A: Yes. MF-R600 is a direct parametric equivalent with identical voltage, current, resistance, and thermal specifications. The primary difference is product status (active versus obsolete) and packaging format (bulk versus original packaging).

Q: What is the difference between MF-R600 and MF-R600-0-14?

A: Both parts share identical electrical and mechanical parameters. MF-R600-0-14 includes AEC-Q200 automotive qualification and broader approval agency certifications (cUL, cURus, TUV, UL versus cURus, TUV). Selection depends on automotive or enhanced compliance requirements.

Q: Is PFRA.600 from SCHURTER a suitable replacement?

A: Yes. PFRA.600 matches all critical electrical parameters (30V, 6A hold, 12A trip, 40A maximum) and mechanical specifications (through-hole radial disc, identical dimensions and lead spacing). Cross-manufacturer substitution is valid when parametric equivalence is confirmed.

Q: Are there any packaging or lead spacing differences among the substitute parts?

A: No. All substitute parts maintain identical through-hole radial disc packaging, physical dimensions (0.760" L x 0.118" W), and lead spacing (0.402"). Direct PCB compatibility is confirmed across all alternatives.

Q: Do all substitute parts meet current compliance standards?

A: Yes. All substitute parts are RoHS3 compliant and REACH unaffected. MF-R600-0-14 provides additional automotive-grade certification (AEC-Q200) if required by application specifications.

Q: What inventory status should influence part selection?

A: MF-R600 (1677 pcs), MF-R600-0-14 (920 pcs), and PFRA.600 (1750 pcs) are all in active stock. Selection may consider availability and lead time requirements for procurement planning.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message