How do the MPD (Memory Protection Devices) EJ50 Series variants differ?

MPD (Memory Protection Devices) EJ50 Series part numbers differ by contact material, industry recognized mating diameter, internal switch and mounting type. Use the selection guide above to pick by contact material.

MPD (Memory Protection Devices) EJ50 Series

11 variants · MPD (Memory Protection Devices)

About the MPD (Memory Protection Devices) EJ50 Series

The MPD (Memory Protection Devices) EJ50 Series series groups 11 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. Every variant in the range shares a common connector type of Jack, current rating of 5 A and gender of Male. Variants differ by contact material, industry recognized mating diameter and internal switch, so you can match the exact contact material your application requires using the selection guide below. All listed MPD (Memory Protection Devices) EJ50 Series part numbers are active and orderable.

Select a variant by

Contact material: Brass · Brass, Copper Alloy · Brass, Phosphor Bronze
Industry recognized mating diameter: 1.35mm ID (0.053\"), 3.50mm OD (0.138\") · 2.10mm ID (0.083\"), 5.50mm OD (0.217\") · 2.50mm ID (0.098\"), 5.50mm OD (0.217\")
Internal switch: Does Not Contain Switch · Single Switch · Single Switch, Normally Closed
Mounting type: Chassis Mount · Panel Mount · Through Hole, Right Angle
Number of positions (Contacts): 2 Conductors, 2 Contacts · 2 Conductors, 3 Contacts
Body color: Black · Silver
Actual diameter: 0.051\" (1.30mm ID), 0.138\" (3.50mm OD) · 0.079\" (2.00mm ID) · 0.083\" (2.10mm ID), 0.217\" (5.50mm OD) · 0.083\" (2.10mm ID), 0.220\" (5.60mm OD) · 0.098\" (2.50mm ID) · 0.098\" (2.50mm ID), 0.217\" (5.50mm OD) · 0.098\" (2.50mm ID), 0.220\" (5.60mm OD)
Mounting feature: Bulkhead - Front Side Nut · Flange

Shared specifications

Connector type: Jack
Current rating: 5 A
Gender: Male
Package: Bulk
Shielding: Unshielded
Termination: Solder Eyelet(s)
Voltage - rated: 12VDC

Variant comparison

Parameter	EJ501A	EJ501B	EJ501C	EJ502A	EJ502B	EJ503A
Contact material	Brass, Copper Alloy	Brass, Copper Alloy	Brass, Copper Alloy	Brass, Copper Alloy	Brass, Copper Alloy	Brass
Industry recognized mating diameter	2.10mm ID (0.083\"), 5.50mm OD (0.217\")	2.50mm ID (0.098\"), 5.50mm OD (0.217\")	1.35mm ID (0.053\"), 3.50mm OD (0.138\")	2.10mm ID (0.083\"), 5.50mm OD (0.217\")	2.50mm ID (0.098\"), 5.50mm OD (0.217\")	2.10mm ID (0.083\"), 5.50mm OD (0.217\")
Internal switch	Single Switch	Single Switch, Normally Closed	Does Not Contain Switch	Single Switch, Normally Closed	Single Switch, Normally Closed	Single Switch, Normally Closed
Mounting type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Through Hole, Right Angle
Number of positions (Contacts)	2 Conductors, 2 Contacts	2 Conductors, 2 Contacts	2 Conductors, 2 Contacts	2 Conductors, 3 Contacts	2 Conductors, 3 Contacts	2 Conductors, 3 Contacts
Body color	Silver	Silver	Silver	Silver	Silver	Black
Actual diameter	0.083\" (2.10mm ID), 0.220\" (5.60mm OD)	0.098\" (2.50mm ID), 0.220\" (5.60mm OD)	0.051\" (1.30mm ID), 0.138\" (3.50mm OD)	0.083\" (2.10mm ID), 0.220\" (5.60mm OD)	0.098\" (2.50mm ID), 0.220\" (5.60mm OD)	0.083\" (2.10mm ID), 0.217\" (5.50mm OD)
Mounting feature	Bulkhead - Front Side Nut	Bulkhead - Front Side Nut	Bulkhead - Front Side Nut	Bulkhead - Front Side Nut	Bulkhead - Front Side Nut	—

Request a quote on any MPD (Memory Protection Devices) EJ50 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

Frequently asked questions

How do the MPD (Memory Protection Devices) EJ50 Series variants differ?: MPD (Memory Protection Devices) EJ50 Series part numbers differ by contact material, industry recognized mating diameter, internal switch and mounting type. Use the selection guide above to pick by contact material.
How many MPD (Memory Protection Devices) EJ50 Series part numbers are listed?: 11 MPD (Memory Protection Devices) EJ50 Series part numbers are listed, each with specifications and a datasheet where available.
How do I get pricing and lead time for MPD (Memory Protection Devices) EJ50 Series?: Request a quote (RFQ) for any MPD (Memory Protection Devices) EJ50 Series part number and we confirm price, availability and lead time per line — including end-of-life and hard-to-find variants.