JPH01161167A - Measurement rationalizing bt plate - Google Patents

Abstract

PURPOSE:To conduct a test and to execute a quality decision check by providing individually a test substrate where a BT testing circuit intrinsic to a product is assembled and a holding substrate where the product is mounted. CONSTITUTION:Respective ICs 6 as products are inserted into and held in respective sockets 7 of the holding substrate 5. When the BT test is conducted, the substrate 5 and test substrate 1 are put one over the other and terminals 8 of sockets 7 of the substrate 5 are inserted into the sockets 2a of the substrate 1; and products 6 are mounted by being connected to the testing circuit for the substrate 1 through sockets 2a and 7 and put in a test tank. Further, when the quantity of the products is checked, the substrate 5 is detached from the substrate 1 and the substrate 5 and a measurement substrate 9 are put one over the other; and terminals 8 of sockets 7 of the substrate 5 are inserted into sockets 2b of the substrate 9, the products 6 are connected to the measuring circuit for the substrate 9 through the sockets 2b and 7 and also connected to an IC tester by a connector 10, and the quality of the products 6 is checked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a BT plate for reliability testing, and particularly to a BT plate that can be efficiently measured when determining the quality of a product.

[Conventional technology]

Conventionally, this type of BT board has an IC socket 7 into which a product 6 is inserted, and an external component 4 for a BT test circuit assembled on a single board 26, as shown in FIG.

When performing a high temperature bias test, a high temperature high humidity bias test, etc., insert the product 6 into the IC socket 7 of the BT board, set it in a constant temperature chamber or constant temperature and humidity chamber, and test the BT board at regular intervals. It is necessary to remove the product from the tank and check the quality of the product using a sorting tester.

[Problem that the invention seeks to solve]

Since the above-mentioned conventional BT board has an IC socket, components, and wiring assembled on a single board, when checking the quality of a product, it is necessary to remove each product from the IC socket and measure it. Having to remove and number each product one by one is time-consuming, puts extra stress on the product's terminals, and there is a risk of getting impurities or adding static electricity stress during work. There are drawbacks.

An object of the present invention is to provide a BT board that eliminates the above-mentioned problems.

[Differences between the invention and the prior art]

The present invention differs from the conventional BT board described above in that it can be measured without removing the product from the IC socket.

[Means for solving problems]

The present invention provides a BT board for conducting a reliability test, which includes a holding board that holds an IC to be tested, and a test board that includes a BT test circuit that is electrically connected to the second IC of the holding board. This is a measurement rationalization BT board characterized by having the following features.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

(Example 1-) Figures 1-(a), (b), (c), and 2 are diagrams showing Example 1 of the present invention. In the figure, the present invention connects a IC (product) 6 to a socket 7, a holding board 5 that holds the IC 6, a test board 1 incorporating external components 4 forming a BT test circuit, and an IC tester. measurement circuit (
A socket 1 into which the terminal 8 protruding from the socket 7 of the holding board 5 is inserted into the test board 1 and the 8111 constant board 9.
~2a and 2b are respectively equipped.

3 is a connection terminal with a connector provided on the test board 1.

In the embodiment, first, each IC 6 as a product is inserted into each socket 7 of the holding board 5 and held therein.

When carrying out the BT test, as shown in FIG. 1(c), the holding board 5 and the test board 1 are placed one on top of the other, and the terminals 8 of the socket 7 of the holding board 5 are connected to the socket 2 of the test board.
a, connect the product 6 to the test circuit of the test board 1 via sockets 1 to 2a and 7, mount it, and place it in the test tank. When checking the quality of the product, remove the holding board 5 from the test board 1, stack the holding board 5 and the measuring board 9 below -L as shown in FIG. Insert the terminal 8 of 7 into the socket 1-2b of the measurement board 9, connect the product 6 to the measurement circuit of the measurement board 9 via the socket 1-2b and 7, and connect the connector 10 to the measurement circuit of the measurement board 9.
Connect to the 1c tester to check whether the product 6 is good or bad.

Therefore, after the product is first mounted in the sockets 1 to 1, the BT test can be carried out without a person touching the product until the test is completed.

FIG. 3 is a block diagram of a simple circuit for checking a large number of products mounted on the holding board 5 one by one using an IC tester. 6 is the product, 12 indicates the line of each terminal, 13 is the changeover switch, 14 is the switch sigma 1
Helix, 15 is the controller, ]6 is the tester (selector), 17 is the terminal line of the product, 18 is the line connecting the product and the tester, 19 is the signal line between the tester and the controller, 20 is for selecting an arbitrary product 21 is a signal line that sends the results of the product quality, 22 is an LED lamp that indicates a good product, and 23 is a signal line that indicates a defective product. , HD lamp.

Normally, a BT board carries multiple products (depending on the size of the product's package), so when testing the products on a single BT board, it is necessary to switch the product terminal and tester one by one. There is.

An embodiment for carrying out this control is shown in FIG. In Fig. 3, upon receiving a measurement start signal from the tester side, any product is selected using switches 1 to 14, and the tester 16
and an arbitrary product 6 are connected and measured with a tester, the pass/fail result is indicated by the 1.1:D lamp 22, and the next product measurement is started.

When the check of the product mounted on the board is completed, the result is indicated by the LIE D lamp, so if a defect occurs, manually select the defective product from Swiss Chingma 1 Helix 14 and re-measure. can be done.

(Example 2) FIG. 4 shows a measurement rationalization BT board according to Example 2 of the present invention.

24 is a connector for measuring with a tester, and 25 is a connector for connecting the test board 1 on which the BT test circuit is assembled and the holding board 5.

Note that each time the tester measures the connector 24, one connector is replaced.

In this example, the current state? 11! There is an advantage in that it can be adequately measured using a fixed-rate system.

〔Effect of the invention〕

As explained above, the present invention has a test board on which a product-specific BT test circuit is assembled and a holding board on which the product is mounted, so that the test can be performed without touching the product until the BT test is completed. This allows you to perform a pass/fail judgment check, which saves you the trouble of removing the product one by one from the C socket for checking during measurement, and also eliminates unnecessary stress on the terminals. This has the effect of eliminating the possibility of applying electrostatic stress or adding impurities.

[Brief explanation of the drawing]

FIG. 1(a) is a front view showing a test board according to an embodiment of the present invention, FIG. 1(b) is a side view of the same, and FIG. 1(C) is a state in which the test board and holding board are combined. FIG. 2 is a diagram showing the state during tester measurement, FIG. 3 is a block diagram showing a simple circuit for continuously measuring multiple products subjected to BT testing, and FIG. 4 is an embodiment of the present invention. 2 and 5 are diagrams showing a conventional example. ]...Test board 2a with BT test circuit assembled from product fabric
, 2b, 7・Socket 3 Connection terminal with connector 4・External parts for BT test circuit 5・Holding board 6 Product (IC) 8 Socket terminal 9・Measurement board

Claims (1)

[Claims] (1) In the BT board where the reliability test is performed, the I
1. A measurement rationalization BT board comprising: a holding board for holding C; and a test board incorporating a BT test circuit electrically connected to an IC on the holding board.