IL-S-4P-S2T2-EF Equivalent & Substitute Parts

Part Overview

The IL-S-4P-S2T2-EF is a rectangular connector header manufactured by JAE Electronics, designed for through-hole mounting with 4 positions at 2.00mm pitch. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part features shrouded 4-wall construction with kinked pin solder termination and detent lock fastening, suitable for board-to-cable/wire connections in industrial and consumer electronics.

Substiute Parts

IL-S-4P-S2T2-EF

JAE ElectronicsIn Stock: 901IL-S-4P-S2T2-EF Datasheet

Current PartRFQ

B4B-PH-K

JST Sales America Inc.In Stock: 2896B4B-PH-K Datasheet

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B4B-PH-K-K

JST Sales America Inc.In Stock: 728B4B-PH-K-K Datasheet

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B4B-PH-KL

JST Sales America Inc.In Stock: 1175B4B-PH-KL Datasheet

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SWR201-NRTN-S04-SA-WH

Sullins Connector SolutionsIn Stock: 40653SWR201-NRTN-S04-SA-WH Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IL-S-4P-S2T2-EF are qualified based on the following critical parameters that must align with the original component:

Core Matching Criteria:

• Pitch - Mating: 0.079" (2.00mm)
• Number of Positions: 4
• Number of Rows: 1
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Shrouding: Shrouded - 4 Wall
• Fastening Type: Detent Lock
• Insulation Material: Polyamide (PA66), Nylon 6/6
• Material Flammability Rating: UL94 V-0
• Style: Board to Cable/Wire

The substitute parts identified—B4B-PH-K, B4B-PH-K-K, B4B-PH-KL (JST Sales America Inc., PH Series), and SWR201-NRTN-S04-SA-WH (Sullins Connector Solutions, SWR201 Series)—meet these core electrical and mechanical parameters. Variations exist in contact material, insulation color, current rating, voltage rating, and operating temperature range, which are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

B4B-PH-K, B4B-PH-K-K, and B4B-PH-KL (JST PH Series)

These three JST parts are active products with RoHS compliance. They share identical pitch, position count, connector type, and mounting characteristics with the IL-S-4P-S2T2-EF. The primary differences are termination method (press-fit versus kinked pin), insulation color, and reduced current/voltage ratings. The JST PH series offers superior availability and long-term supply assurance compared to the obsolete IL-S part.

SWR201-NRTN-S04-SA-WH (Sullins SWR201 Series)

This part maintains kinked pin termination matching the original IL-S design and is ROHS3 compliant. It provides the highest inventory availability among all substitutes. The reduced current rating (1A per contact versus 3A) and voltage rating (125V versus 300VAC/400VDC) must be evaluated against application requirements.

Selection Basis:

• All substitute parts are active products with established supply chains
• All meet core mechanical and electrical compatibility parameters
• JST parts offer RoHS compliance; Sullins part offers ROHS3 compliance
• Operating temperature range is reduced to -25°C ~ 85°C for all substitutes compared to the original -40°C ~ 85°C
• Current and voltage ratings vary; application-specific requirements must be assessed

Frequently Asked Questions (FAQ)

Q: Can B4B-PH-K, B4B-PH-K-K, and B4B-PH-KL be used interchangeably with IL-S-4P-S2T2-EF?

A: These parts share the same pitch (2.00mm), position count (4), connector type (header), mounting method (through hole), and shrouding (4-wall). The primary difference is termination method: JST parts use press-fit termination while the IL-S uses kinked pin termination. Both methods are compatible with standard PCB soldering processes. Insulation color differs among the three JST variants but does not affect electrical function.

Q: What are the key differences in electrical ratings?

A: The IL-S-4P-S2T2-EF is rated for 3A per contact and 300VAC/400VDC. JST PH series parts are rated for 2A and 100V. The Sullins SWR201 is rated for 1A per contact and 125V. Applications requiring the original 3A or 300VAC/400VDC ratings cannot use these substitutes without design modification.

Q: Does the operating temperature range difference matter?

A: The IL-S-4P-S2T2-EF operates from -40°C to 85°C, while all substitute parts operate from -25°C to 85°C. Applications requiring operation below -25°C cannot use these substitutes.

Q: Why do the JST parts use press-fit termination instead of kinked pin?

A: Press-fit termination is a modern manufacturing standard offering improved reliability and consistency. Both termination methods are compatible with standard PCB assembly and soldering processes. The choice between them depends on PCB design and assembly equipment capabilities.

Q: Is the SWR201-NRTN-S04-SA-WH a direct replacement?

A: The SWR201 maintains kinked pin termination matching the original IL-S design and is mechanically compatible. However, its reduced current rating (1A versus 3A) and voltage rating (125V versus 300VAC/400VDC) must be evaluated for the specific application.

Q: Are all substitute parts RoHS compliant?

A: Yes. JST PH series parts are RoHS compliant. The Sullins SWR201 is ROHS3 compliant. The original IL-S-4P-S2T2-EF RoHS status is not specified.

Q: What is the difference between B4B-PH-K, B4B-PH-K-K, and B4B-PH-KL?

A: These three parts are functionally identical with the same electrical and mechanical specifications. The differences are insulation color (Ivory, Black, and Gray respectively) and contact material (Brass for B4B-PH-K and B4B-PH-K-K; Copper Alloy for B4B-PH-KL). Selection between them is based on color coding requirements or specific application preferences.