An initiator assembly comprising: a surface mount initiator assembly board (212, 512) which includes or wherein connector lead features are directly mounted or disposed onto and further comprises a surface onto which at least a first and a second initiator (214, 514; 216, 516) are mounted, the first initiator (214, 514) comprising: a first container (220, 520) closed by a first solid body (222, 522), the first container (220, 520) containing a supply of a first igniter material; a first igniter element disposed within the first container, upon actuation, the first igniter element in reaction initiating communication with the first igniter material; a first surface mount initiator board (242, 542), which includes or wherein connector lead features (250, 550) are directly mounted or disposed onto, disposed between the first igniter element and the first solid body and first initiator first and second electrical contacts (244, 544; 246, 546) passing through the first solid body (222, 522) and the first surface mount initiator board (242, 542) in electrical contact with the first igniter element (240, 540); the second initiator (216, 516) comprising; a second container (260, 560) closed by a second solid body (270, 570), the second container (260, 560) containing a supply of a second igniter material; a second igniter element (280, 580) disposed within the second container (260, 560), upon actuation, the second igniter element in reaction initiating communication with the second igniter material; a second surface mount initiator board (282, 582), which includes or wherein connector lead features are directly mounted or disposed onto, disposed between the second igniter element (280, 580) and the second solid body (270, 570) and second initiator first and second electrical contacts passing through the second solid body and the second surface mount initiator board in electrical contact with the second igniter element. a surface mount initiator assembly board (212, 512) which includes or wherein connector lead features are directly mounted or disposed onto and further comprises a surface onto which at least a first and a second initiator (214, 514; 216, 516) are mounted, the first initiator (214, 514) comprising: a first container (220, 520) closed by a first solid body (222, 522), the first container (220, 520) containing a supply of a first igniter material; a first igniter element disposed within the first container, upon actuation, the first igniter element in reaction initiating communication with the first igniter material; a first surface mount initiator board (242, 542), which includes or wherein connector lead features (250, 550) are directly mounted or disposed onto, disposed between the first igniter element and the first solid body and first initiator first and second electrical contacts (244, 544; 246, 546) passing through the first solid body (222, 522) and the first surface mount initiator board (242, 542) in electrical contact with the first igniter element (240, 540); a first container (220, 520) closed by a first solid body (222, 522), the first container (220, 520) containing a supply of a first igniter material; a first igniter element disposed within the first container, upon actuation, the first igniter element in reaction initiating communication with the first igniter material; a first surface mount initiator board (242, 542), which includes or wherein connector lead features (250, 550) are directly mounted or disposed onto, disposed between the first igniter element and the first solid body and first initiator first and second electrical contacts (244, 544; 246, 546) passing through the first solid body (222, 522) and the first surface mount initiator board (242, 542) in electrical contact with the first igniter element (240, 540); the second initiator (216, 516) comprising; a second container (260, 560) closed by a second solid body (270, 570), the second container (260, 560) containing a supply of a second igniter material; a second igniter element (280, 580) disposed within the second container (260, 560), upon actuation, the second igniter element in reaction initiating communication with the second igniter material; a second surface mount initiator board (282, 582), which includes or wherein connector lead features are directly mounted or disposed onto, disposed between the second igniter element (280, 580) and the second solid body (270, 570) and second initiator first and second electrical contacts passing through the second solid body and the second surface mount initiator board in electrical contact with the second igniter element.