Equivalent & Substitute Parts for S500-1.6-R

Part Overview

The S500-1.6-R is a 1.6 A 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for 5mm x 20mm holder applications and is currently in active production status. The component requires a compatible fuse holder for installation and provides circuit protection in industrial and commercial electrical systems. Alternative equivalent parts are necessary to support supply chain flexibility, regional certification requirements, and inventory availability across different manufacturing locations and distribution channels.

Key Parameters

Parameter	Value
Current Rating	1.6 A
Voltage Rating (AC)	250 V
Fuse Type	Cartridge, Glass
Package / Case	5mm x 20mm
Response Time	Fast Blow
Mounting Type	Requires Holder
Size / Dimension	0.205" Dia x 0.787" L (5.20mm x 20.00mm)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the S500-1.6-R is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Current Rating: 1.6 A
Voltage Rating (AC): 250 V
Fuse Type: Cartridge, Glass
Package / Case: 5mm x 20mm
Response Time: Fast Blow
Mounting Type: Requires Holder

All substitute parts listed maintain identical values for these parameters, ensuring direct functional compatibility within holder assemblies. Variations in secondary parameters such as breaking capacity, melting I²t, DC cold resistance, and approval agency certifications do not affect basic substitutability but may influence suitability for specific regional or application-specific requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (A)	Voltage Rating (V AC)	Package / Case	Response Time	Breaking Capacity @ Rated Voltage (A)	Melting I²t	DC Cold Resistance (Ohms)	Approval Agency	RoHS Status	Inventory (Pcs)
S500-1.6-R	Eaton - Electronics Division	S500	1.6	250	5mm x 20mm	Fast Blow	35	1.6	0.066	BSI, CCC, CSA, cURus, IMQ, SEMKO, VDE	ROHS3 Compliant	761
BK/GMA-1.6-R	Eaton - Electronics Division	GMA	1.6	250	5mm x 20mm	Fast Blow	100	2	0.08	CSA, PSE, UL	ROHS3 Compliant	1159
BK/S500-1.6-R	Eaton - Electronics Division	S500	1.6	250	5mm x 20mm	Fast Blow	35	1.6	0.066	BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE	ROHS3 Compliant	749
BK1/GMA-1.6-R	Eaton - Electronics Division	GMA	1.6	250	5mm x 20mm	Fast Blow	100	2	0.08	CSA, PSE, UL	RoHS Compliant	1966
BK1/S500-1.6-R	Eaton - Electronics Division	S500	1.6	250	5mm x 20mm	Fast Blow	35	1.6	0.066	BSI, CCC, CSA, cULus, IMQ, SEMKO, VDE	ROHS3 Compliant	1657
GDB-1.6A	Eaton - Electronics Division	GDB	1.6	250	5mm x 20mm	Fast Blow	35	1.6	0.066	VDE, UR	Not specified	994
GMA-1.6-R	Eaton - Electronics Division	GMA	1.6	250	5mm x 20mm	Fast Blow	100	2	0.08	CSA, PSE, UL	RoHS Compliant	705
021701.6MXP	Littelfuse Inc.	217	1.6	250	5mm x 20mm	Fast Blow	35	4.615	0.0528	CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE	ROHS3 Compliant	50040
0034.1518	SCHURTER Inc.	FSF 5x20	1.6	250	5mm x 20mm	Fast Blow	35	2.94	Not specified	CCC, cURus, PSE/JET, VDE	ROHS3 Compliant	1954
021701.6HXP	Littelfuse Inc.	217	1.6	250	5mm x 20mm	Fast Blow	35	4.615	0.0528	CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, VDE	ROHS3 Compliant	2061
021701.6TXP	Littelfuse Inc.	217	1.6	250	5mm x 20mm	Fast Blow	35	4.615	0.0528	CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE	ROHS3 Compliant	1308

Engineering Selection Recommendations

Eaton S500 Series (S500-1.6-R, BK/S500-1.6-R, BK1/S500-1.6-R): These parts maintain identical electrical characteristics and are suitable for applications requiring BSI, CCC, CSA, IMQ, SEMKO, and VDE certifications. The S500 series provides consistent performance with 35 A breaking capacity and 1.6 melting I²t. Selection among these variants depends on regional certification requirements and inventory availability.

Eaton GMA Series (GMA-1.6-R, BK/GMA-1.6-R, BK1/GMA-1.6-R): These parts are functionally equivalent but feature higher breaking capacity (100 A) and increased melting I²t (2). These variants are certified by CSA, PSE, and UL. Selection is appropriate for applications requiring North American or Asian market certifications.

Eaton GDB Series (GDB-1.6A): This part is certified by VDE and UR, making it suitable for European applications. It maintains the same electrical characteristics as the S500 series with 35 A breaking capacity and 1.6 melting I²t.

Littelfuse 217 Series (021701.6MXP, 021701.6HXP, 021701.6TXP): These parts provide broad international certification coverage including CCC, CE, CSA, K-MARK, PSE, SEMKO, UL, and VDE. The 217 series offers extended operating temperature range (-55°C to 125°C) and higher inventory availability (50,040 units for 021701.6MXP). These parts are suitable for applications requiring multi-regional compliance.

SCHURTER FSF 5x20 Series (0034.1518): This part is certified by CCC, cURus, PSE/JET, and VDE. It provides an alternative from a different manufacturer with adequate inventory (1,954 units) and extended operating temperature range (-55°C to 125°C).

All listed parts are ROHS3 compliant and maintain active product status. Selection should be based on regional certification requirements, application-specific operating temperature needs, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can I substitute S500-1.6-R with any of the listed equivalent parts?

A: Yes. All listed parts maintain identical current rating (1.6 A), voltage rating (250 V AC), fuse type (cartridge glass), package dimensions (5mm x 20mm), and response time (fast blow). Direct substitution is electrically and mechanically compatible within any 5mm x 20mm fuse holder.

Q: What is the difference between S500 and GMA series fuses?

A: Both series are manufactured by Eaton and are functionally equivalent for the 1.6 A 250 V rating. The primary differences are breaking capacity (S500: 35 A, GMA: 100 A) and melting I²t (S500: 1.6, GMA: 2). The GMA series is certified by CSA, PSE, and UL, while the S500 series includes BSI, CCC, CSA, IMQ, SEMKO, and VDE certifications. Selection depends on regional certification requirements.

Q: Are Littelfuse 217 series parts direct replacements for Eaton S500-1.6-R?

A: Yes. Littelfuse 021701.6MXP, 021701.6HXP, and 021701.6TXP are functionally equivalent and mechanically compatible. All maintain 1.6 A current rating, 250 V voltage rating, 5mm x 20mm package, and fast-blow response. Littelfuse parts offer extended operating temperature range (-55°C to 125°C) and broader international certification coverage.

Q: What certifications should I verify for my application?

A: Certification requirements depend on the target market and application. European applications typically require VDE certification. North American applications require CSA or UL certification. Asian markets may require PSE, K-MARK, or CCC certification. Review your application's regional requirements and select a part with matching certifications from the provided list.

Q: Does the difference in melting I²t affect substitutability?

A: Melting I²t differences do not affect basic substitutability within the same current and voltage rating. All listed parts are rated for 1.6 A at 250 V and will function in the same holder. However, melting I²t variations may influence thermal response characteristics in specific circuit conditions. Consult application-specific requirements if thermal response is critical.

Q: Can I use GMA series (100 A breaking capacity) instead of S500 series (35 A breaking capacity)?

A: Yes. The GMA series with higher breaking capacity is mechanically and electrically compatible and will function in the same 5mm x 20mm holder. Higher breaking capacity provides additional safety margin in high-fault-current applications. Selection should be based on your circuit's fault current rating and regional certification requirements.

Q: What is the difference between 021701.6MXP, 021701.6HXP, and 021701.6TXP?

A: All three Littelfuse parts maintain identical electrical specifications (1.6 A, 250 V, fast blow, 5mm x 20mm). The primary difference is certification coverage: 021701.6MXP includes K-MARK; 021701.6HXP includes K-MARK; 021701.6TXP includes KC certification. Select based on your specific regional certification requirements.

Q: Is SCHURTER 0034.1518 compatible with Eaton fuse holders?

A: Yes. The SCHURTER 0034.1518 maintains identical package dimensions (5mm x 20mm), current rating (1.6 A), voltage rating (250 V), and response time (fast blow). It is mechanically and electrically compatible with any standard 5mm x 20mm fuse holder designed for Eaton parts.

Q: What inventory levels should I consider for supply chain planning?

A: Littelfuse 021701.6MXP offers the highest inventory availability (50,040 units), followed by BK1/GMA-1.6-R (1,966 units) and 021701.6HXP (2,061 units). For applications requiring immediate availability or high-volume procurement, Littelfuse 217 series parts provide superior supply chain flexibility.

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