7 Replies Latest reply on Feb 29, 2016 11:56 PM by davida_06

    ESD on module BCM20737S

    viloc_1229846

      Where is it possible to find electrical specification ESD about BCM20737S module?

       

      I'm executing ESD tests and I would like to understand what limits and precautions are necessary.

        • 2. Re: ESD on module BCM20737S
          viloc_1229846

          No, I read this document, but I didn't find any reference about ESD, ESD protection on pins, etc... 

          • 3. Re: ESD on module BCM20737S
            MichaelF_56

            We will need to check internally to see if this level of detail is available.

            • 4. Re: ESD on module BCM20737S
              viloc_1229846

              Any news?

              • 5. Re: ESD on module BCM20737S
                MichaelF_56

                I am in the process of adding the following ESD section to the datasheets of the BCM2732/36/37 SoCs (thanks again to nasac_2167841 for helping me pull this together):

                 

                ESD Test Models

                 

                ESD can have serious detrimental effects on all semiconductor ICs and the system that contains them.

                Standards are developed to enhance the quality and reliability of ICs by ensuring all devices employed have

                undergone proper ESD design and testing, thereby minimizing the detrimental effects of ESD. Three major test

                methods are widely used in the industry today to describe uniform methods for assessing ESD immunity at

                Component level, Human Body Model (HBM), Machine Model (MM), and Charged Device Model (CDM). The

                following standards were used to test this device:

                 

                Human-Body Model (HBM) – ANSI/ESDA/JEDEC JS-001-2012

                The HBM has been developed to simulate the action of a human body discharging an accumulated static charge

                through a device to ground, and employs a series RC network consisting of a 100 pF capacitor and a 1500Ω

                (Ohm) resistor. Both positive and negative polarities are used for this test. Although, a 100 ms delay is allowable

                per specification, the minimum delay used for testing was set to 300 ms between each pulse.

                 

                Machine Model (MM) – JEDEC JESD22-A115C

                The MM has been developed to simulate the rapid discharge from a charged conductive object, such as a

                metallic tool or fixture. The most common application would be rapid discharge from charged board assembly

                or the charged cables of automated testers. This model consists of a 200 pF capacitor discharged directly into

                a component with no series resistor (0Ω). One positive and one negative polarity pulses are applied. The

                minimum delay between pulses is 500 ms.

                 

                Charged-Device Model (CDM) - JEDEC JESD22-C101E

                CDM simulates charging/discharging events that occur in production equipment and processes. The potential

                for a CDM ESD events occurs when there is metal-to-metal contact in manufacturing. CDM addresses the

                possibility that a charge may reside on the lead frame or package (e.g., from shipping) and discharge through

                a pin that subsequently is grounded, causing damage to sensitive devices in the path. Discharge current is

                limited only by the parasitic impedance and capacitance of the device. CDM testing consists of charging

                package to a specified voltage, then discharging the voltage through relevant package leads. One positive and

                one negative polarity pulse is applied. The minimum delay between pulses is 200 ms.

                 

                Results Summary

                 

                • ESD Test Voltage Level Results:
                  • HBM +/– 2KV PASS
                  • MM +/– 150V PASS
                  • CDM +/– 500V PASS

                 

                These should be published to the site within the next few days by gewing

                 

                davida_06

                1 of 1 people found this helpful
                • 6. Re: ESD on module BCM20737S
                  viloc_1229846

                  Now I understand why I have problem with ESD test (IEC 61000-4-2 standard).

                  • 7. Re: ESD on module BCM20737S
                    davida_06

                    Hi Mike,

                     

                    Many thanks for posting the clear summary, this will be helpful for many customers designs.

                     

                     

                    Regards

                    Dave