Modular Spring Contacts

Bourns® 70AA, 70AB, 70AD, 75AB, 76AA, and 78AD series male and female spring connectors

Image of Bourns’ Modular ContactsBourns modular contacts are off-the-shelf spring interconnect devices offering a low-profile design with proven reliability to 50,000 mated cycles. They can be used as board-to-battery, board-to-device, and board-to-board connectors anywhere a rechargeable battery pack is required, including tablets, laptops, medical equipment (low/medium risk), and test equipment. Because they can be used as either compression or sliding interconnects, they can function as connectors for many other non-battery-related applications. Offered in three pitch sizes and capable of end-to-end stacking, the Bourns modular contact products provide the options users need for a solution to a design.

The 70AA, 70AB, 70AD, 75AB, 76AA, and 78AD series are engineered to provide excellent performance for demanding industrial, mobility, medical*, and consumer applications, including but not limited to industrial automation, precision instrumentation, and advanced docking applications where high reliability is essential.

Bourns high-power modular contacts offer a symmetrical pad layout, auto-centering, end-to-end stackability, pick-and-place compatibility, compact footprint, and current ratings of up to 8 A per contact, all with an extended life of 50,000 cycles minimum. These features enhance durability and flexibility, benefiting user design outcomes. Their robust construction ensures consistent connectivity under demanding conditions.

Features
  • Miniature connectors
  • High current rating per contact
  • High cycle life: 50K cycles minimum
  • Precious metal contacts
  • RoHS compliant and halogen-free
Applications
  • Handheld communications: Mobile phones, pagers, cordless phones, GPS, PICs, and radios
  • Portable consumer equipment: PDAs, HPCs, notebook PCs, cameras, dictaphones, PICs, and games
Modular Spring Contact Selection Chart

Image of Bourns Modular Spring Contact Selection Chart

*Bourns products have not been designed for and are not intended for use in lifesaving, life-critical, or life-sustaining applications nor any other applications where failure or malfunction of the Bourns product may result in personal injury or death. See the Legal Disclaimer Notice.

Modular Contact Design Kit H-866

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
GENERAL MODULAR CONTACT DESIGN KH-866GENERAL MODULAR CONTACT DESIGN K1 - Immediate$23.68View Details

70AA Series Spring Connectors

ImageManufacturer Part NumberDescriptionNumber of ContactsPitchAvailable QuantityPriceView Details
CONN SPRING MOD MALE 5POS SMD70AAJ-5-M0CONN SPRING MOD MALE 5POS SMD50.100" (2.54mm)7384 - Immediate$1.56View Details
CONN SPRING MOD MALE 4POS SMD70AAJ-4-M0GCONN SPRING MOD MALE 4POS SMD40.100" (2.54mm)26466 - Immediate$1.49View Details
CONN SPRING MOD MALE 6POS SMD70AAJ-6-M0GCONN SPRING MOD MALE 6POS SMD60.100" (2.54mm)4804 - Immediate$2.26View Details
CONN SPRING MOD FEMALE 6POS SMD70AAJ-6-F1GCONN SPRING MOD FEMALE 6POS SMD60.100" (2.54mm)6297 - Immediate$2.26View Details
CONN SPRING MOD MALE 2POS SMD70AAJ-2-M0CONN SPRING MOD MALE 2POS SMD20.100" (2.54mm)18655 - Immediate$0.98View Details
CONN SPRING MOD MALE 2POS SMD70AAJ-2-M0GCONN SPRING MOD MALE 2POS SMD20.100" (2.54mm)2837 - Immediate$1.05View Details
CONN SPRING MOD MALE 4POS SMD70AAJ-4-M0CONN SPRING MOD MALE 4POS SMD40.100" (2.54mm)4775 - Immediate$1.17View Details
CONN SPRING MOD MALE 3POS SMD70AAJ-3-M0GCONN SPRING MOD MALE 3POS SMD30.100" (2.54mm)41965 - Immediate$1.26View Details
CONN SPRING MOD MALE 3POS SMD70AAJ-3-M0CONN SPRING MOD MALE 3POS SMD30.100" (2.54mm)230 - Immediate$1.26View Details
CONN SPRING MOD FEMALE 2POS SMD70AAJ-2-F0GCONN SPRING MOD FEMALE 2POS SMD20.100" (2.54mm)2449 - Immediate$1.40View Details

70AB Series Spring Connectors

ImageManufacturer Part NumberDescriptionNumber of ContactsPitchAvailable QuantityPriceView Details
CONN SPRING MOD MALE 3POS SMD70ABJ-3-M0ECONN SPRING MOD MALE 3POS SMD30.050" (1.27mm)38657 - Immediate$2.26View Details
CONN SPRING MOD MALE 4POS SMD70ABJ-4-M0ECONN SPRING MOD MALE 4POS SMD40.050" (1.27mm)6004 - Immediate$2.26View Details
CONN SPRING MOD FEMALE 4POS SMD70ABJ-4-F0ECONN SPRING MOD FEMALE 4POS SMD40.050" (1.27mm)780 - Immediate$2.26View Details
CONN SPRING MOD FEMALE 2POS SMD70ABJ-2-F0ECONN SPRING MOD FEMALE 2POS SMD20.050" (1.27mm)3885 - Immediate$2.26View Details
CONN SPRING MOD FEMALE 3POS SMD70ABJ-3-F0ECONN SPRING MOD FEMALE 3POS SMD30.050" (1.27mm)968 - Immediate$2.26View Details
CONN SPRING MOD MALE 2POS SMD70ABJ-2-M0ECONN SPRING MOD MALE 2POS SMD20.050" (1.27mm)27748 - Immediate$2.26View Details

70AD Series Spring Connectors

ImageManufacturer Part NumberDescriptionNumber of ContactsPitchAvailable QuantityPriceView Details
CONN SPRING MOD MALE 2POS PCB70ADH-2-ML0CONN SPRING MOD MALE 2POS PCB20.157" (4.00mm)9087 - Immediate$1.57View Details
CONN SPRING MOD MALE 2POS SMD70ADJ-2-ML1GCONN SPRING MOD MALE 2POS SMD20.157" (4.00mm)9991 - Immediate$1.57View Details
CONN SPRING MOD FEMALE 4POS SMD70ADJ-4-FL1GCONN SPRING MOD FEMALE 4POS SMD40.157" (4.00mm)14076 - Immediate$1.91View Details
CONN SPRING MOD FEMALE 4POS PCB70ADH-4-FL0CONN SPRING MOD FEMALE 4POS PCB40.157" (4.00mm)8420 - Immediate$2.02View Details
CONN SPRING MOD MALE 5POS SMD70ADJ-5-ML1GCONN SPRING MOD MALE 5POS SMD50.157" (4.00mm)0 - Immediate$2.60View Details
CONN SPRING MOD MALE 6POS SMD70ADJ-6-ML0CONN SPRING MOD MALE 6POS SMD60.157" (4.00mm)820 - Immediate$2.97View Details
CONN SPRING MOD FEMALE 2POS PCB70ADH-2-FL0CONN SPRING MOD FEMALE 2POS PCB20.157" (4.00mm)5664 - Immediate$1.57View Details
CONN SPRING MOD MALE 2POS SMD70ADJ-2-ML1CONN SPRING MOD MALE 2POS SMD20.157" (4.00mm)535 - Immediate$1.57View Details
CONN SPRING MOD MALE 3POS SMD70ADJ-3-ML1GCONN SPRING MOD MALE 3POS SMD30.157" (4.00mm)2970 - Immediate$1.85View Details
CONN SPRING MOD MALE 3POS PCB70ADH-3-ML0CONN SPRING MOD MALE 3POS PCB30.157" (4.00mm)0 - Immediate$1.75View Details

75AB Series Spring Connectors

ImageManufacturer Part NumberDescriptionNumber of ContactsPitchAvailable QuantityPriceView Details
New at DigiKey
MODULAR CONNECTOR
75ABJ-3-M0EMODULAR CONNECTOR30.050" (1.27mm)492 - Immediate$2.32View Details
New at DigiKey
MODULAR CONNECTOR
75ABJ-4-F0EMODULAR CONNECTOR40.050" (1.27mm)496 - Immediate$2.32View Details
New at DigiKey
MODULAR CONNECTOR
75ABJ-2-M0EMODULAR CONNECTOR20.050" (1.27mm)494 - Immediate$2.32View Details
New at DigiKey
MODULAR CONNECTOR
75ABJ-4-M0EMODULAR CONNECTOR40.050" (1.27mm)0 - Immediate$1.43View Details
New at DigiKey
MODULAR CONNECTOR
75ABJ-2-F0EMODULAR CONNECTOR20.050" (1.27mm)0 - Immediate$1.43View Details
New at DigiKey
MODULAR CONNECTOR
75ABJ-3-F0EMODULAR CONNECTOR30.050" (1.27mm)0 - Immediate$1.43View Details

76AA Series Spring Connectors

ImageManufacturer Part NumberDescriptionNumber of ContactsPitchAvailable QuantityPriceView Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-2-F0MODULAR CONNECTOR20.100" (2.54mm)420 - Immediate$1.44View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-4-F1GMODULAR CONNECTOR40.100" (2.54mm)999 - Immediate$1.79View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-4-F0GMODULAR CONNECTOR40.100" (2.54mm)996 - Immediate$1.79View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-5-M0GMODULAR CONNECTOR50.100" (2.54mm)965 - Immediate$1.89View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-5-F0GMODULAR CONNECTOR50.100" (2.54mm)965 - Immediate$2.08View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-6-M0GMODULAR CONNECTOR60.100" (2.54mm)958 - Immediate$2.32View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-6-F1GMODULAR CONNECTOR60.100" (2.54mm)987 - Immediate$2.32View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-2-M0GMODULAR CONNECTOR20.100" (2.54mm)1000 - Immediate$1.08View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-3-M0GMODULAR CONNECTOR30.100" (2.54mm)1000 - Immediate$1.29View Details
New at DigiKey
MODULAR CONNECTOR
76AAJ-4-M0GMODULAR CONNECTOR40.100" (2.54mm)999 - Immediate$1.53View Details

78AD Series Spring Connectors

ImageManufacturer Part NumberDescriptionNumber of ContactsPitchAvailable QuantityPriceView Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-3-ML0GMODULAR CONNECTOR30.157" (4.00mm)500 - Immediate$1.79View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-3-ML1GMODULAR CONNECTOR30.157" (4.00mm)500 - Immediate$1.79View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-4-FL1GMODULAR CONNECTOR40.157" (4.00mm)500 - Immediate$1.96View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-4-ML0GMODULAR CONNECTOR40.157" (4.00mm)490 - Immediate$2.18View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-4-ML1GMODULAR CONNECTOR40.157" (4.00mm)498 - Immediate$2.18View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-5-FL1GMODULAR CONNECTOR50.157" (4.00mm)490 - Immediate$2.32View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-5-ML1GMODULAR CONNECTOR50.157" (4.00mm)490 - Immediate$2.67View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-6-ML1GMODULAR CONNECTOR60.157" (4.00mm)500 - Immediate$2.88View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-2-ML0GMODULAR CONNECTOR20.157" (4.00mm)499 - Immediate$1.53View Details
New at DigiKey
MODULAR CONNECTOR
78ADJ-2-ML1GMODULAR CONNECTOR20.157" (4.00mm)499 - Immediate$1.53View Details
Updated: 2026-06-03
Published: 2019-04-26