SAE - AS81714D
Terminal Junction System (TJS), Environment Resistant General Specification for
|Publication Date:||1 November 2021|
AS81714 covers Terminal Junction System (TJS) components which are used for interconnection of wiring and incorporation of passive components (see 6.1). These environment resistant components have in common the use of crimp type external pin contacts in accordance with AS39029/1 for Series I or crimp type external socket contacts in accordance with AS39029/22 for Series II. This family of TJS components is designed to operate continuously over a temperature range of -65 to 200 °C, using any combination of temperatures generated by the electrical load and ambient temperature so that the maximum internal hot spot, combined temperature, will not exceed the maximum specified for the class of TJS component, unless otherwise specified (1.2, 3.1). The maximum continuous temperature established by the electronic components in a component module (block) shall be limited to the block maximum continuous temperature. The components making up the system and covered by AS81714 include:
a. Terminal junction bussing blocks (6.12.2)
1. Feedback type (220.127.116.11)
2. Feedthrough type (18.104.22.168)
b. Racks (mounting holders) for blocks (6.12.3)
c. Brackets, block mounting (6.12.4)
d. Wire in-line junctions (6.12.5)
e. Grounding terminal (6.12.6)
f. Grounding blocks (6.12.7)
g. Electronic blocks (6.12.12)
h. Electronic in-line junctions (6.12.9)
The TJS components conform to the recommendations of MIL-HDBK-454.
Terminal junction components fabricated to AS81714 are classified as follows:
The Series I and II TJS components are not interchangeable or intermateable.
External pin contact crimped on wire.
External socket contact crimped on wire.
Terminal junction components described herein are Class D (see 6.10).
The components covered by AS81714 shall be identified by a part number, as shown by the applicable detail specification. Series I components shall be identified as in the following examples, or as otherwise specified (3.1).
A different component designator is required for each component having identical external contacts and for each combination of different contacts used in a block.
Bussing and Circuit Designator
The bussing and circuit designators shall be as shown on the applicable detail specification (3.1).
The maximum working voltages shall be as shown in Table 13.
External Contact Conductor Size Range
Each external contact with the indicated dash number accommodates the range of conductor sizes specified in Table 1.
Grommet Wire Sealing Ranges
For TJS components, each grommet aperture for a specified contact dash number, seals on the OD range of smooth finished wires specified in Table 1.
When selecting wire requiring sealing, the finished wire outer diameter (OD) shall be within the OD range shown in Table 1.
TJS components are intended for electrical distribution use. They are suitable for use in Integrated Wire Termination System (IWTS), and environment resistant wiring, in accordance with... View More
TJS components are intended for electrical distribution use. They are suitable for use in Integrated Wire Termination System (IWTS), and environment resistant wiring, in accordance with AS50881.View Less