JWD-107-3 Equivalent & Substitute Parts

Part Overview

The JWD-107-3 is a reed relay manufactured by TE Connectivity Potter & Brumfield Relays, designed for single-pole single-throw (SPST) switching applications. This through-hole mounted relay operates at 12VDC with a maximum contact rating of 500 mA and a switching voltage capability of 100VDC. The component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative suppliers.

Substiute Parts

JWD-107-3

TE Connectivity Potter & Brumfield RelaysIn Stock: 1031JWD-107-3 Datasheet

Current PartRFQ

HE721A1200

Littelfuse Inc.In Stock: 2398HE721A1200 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the JWD-107-3 are identified based on electrical and mechanical compatibility within the reed relay category. The substitution criteria are strictly limited to the following parameters:

• Coil voltage matching at 12VDC
• Contact form equivalence as SPST-NO (1 Form A)
• Contact current rating of 500 mA or greater
• Through-hole mounting configuration with PC pin termination
• Non-latching coil type
• Active product status
• RoHS3 compliance

The HE721A1200 from Littelfuse Inc. meets these substitution criteria and is classified as an equivalent part for the JWD-107-3.

Parameter Comparison

Engineering Selection Recommendations

Both the JWD-107-3 and HE721A1200 are Active status products with full RoHS3 compliance and REACH unaffected classification. Selection between these parts is determined by application-specific requirements and availability constraints.

The JWD-107-3 operates within a switching voltage range of 100VDC maximum, while the HE721A1200 supports 200VDC maximum switching voltage. Applications requiring higher switching voltage capability should specify the HE721A1200.

The JWD-107-3 exhibits faster release time (0.5 ms versus 1 ms) and lower must-operate voltage (9.6 VDC versus 8 VDC). Applications with timing-critical switching requirements or lower voltage supply margins should specify the JWD-107-3.

The HE721A1200 demonstrates faster operate time (1 ms versus 1.5 ms) and operates across a wider temperature range (-40°C to 85°C versus -35°C to 85°C). Applications requiring extended low-temperature operation should specify the HE721A1200.

Both parts share identical contact form, contact rating, coil voltage, mounting type, and termination style, confirming functional equivalence for standard SPST switching applications at 12VDC and 500 mA.

Frequently Asked Questions (FAQ)

Q: Can the HE721A1200 directly replace the JWD-107-3 in existing circuit designs?

A: The HE721A1200 is electrically compatible with the JWD-107-3 for applications operating within the JWD-107-3 specifications. Both relays share identical coil voltage (12VDC), contact form (SPST-NO), contact rating (500 mA), mounting type (through-hole), and termination style (PC pin). Physical footprint compatibility must be verified against the specific printed circuit board layout, as packaging differs (tray versus tube).

Q: What are the key differences between these two relay models?

A: The primary differences are switching voltage capability (100VDC for JWD-107-3 versus 200VDC for HE721A1200), operate time (1.5 ms versus 1 ms), release time (0.5 ms versus 1 ms), must-operate voltage (9.6 VDC versus 8 VDC), operating temperature range (-35°C to 85°C versus -40°C to 85°C), and coil resistance (1.2 kOhms versus 1 kOhms). Packaging format also differs (tray versus tube).

Q: Are both relays RoHS3 compliant?

A: Yes, both the JWD-107-3 and HE721A1200 are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the significance of the different packaging formats?

A: The JWD-107-3 is supplied in tray packaging, while the HE721A1200 is supplied in tube packaging. Packaging format affects handling, storage, and automated assembly processes. Component selection should account for compatibility with existing procurement and assembly workflows.

Q: Which relay should be selected for applications requiring extended temperature operation?

A: The HE721A1200 operates across a temperature range of -40°C to 85°C, compared to -35°C to 85°C for the JWD-107-3. Applications requiring operation at temperatures below -35°C should specify the HE721A1200.

Q: Which relay exhibits faster switching response?

A: The HE721A1200 demonstrates faster operate time (1 ms versus 1.5 ms for the JWD-107-3). However, the JWD-107-3 exhibits faster release time (0.5 ms versus 1 ms). Application timing requirements determine which characteristic is critical for component selection.