As an Amazon Associate, we earn from qualifying purchases. SPH0644LM4H Knowles | Audio Products | DigiKey Knowles . SPH0644LM4H Attributes Brand name, Manufacturer name, Manufacturer, Attribute01Knowles Attribute00Audio Products Attribute02SiSonic? SPH Attribute03Tray Attribute04Obsolete Attribute05MEMS (Silicon) Attribute06Digital, PDM Attribute07Omnidirectional Attribute08-37dB ?1dB @ 94dB SPL Attribute0965.5dB Attribute101.8 V Attribute111.6 V ~ 3.6 V Attribute121.4 mA Attribute13Bottom Attribute14- Attribute15Solder Pads Attribute160.138" L x 0.104" W (3.50mm x 2.65mm) Attribute170.039" (0.98mm) Attribute18Rectangular AttributeKey00Category AttributeKey01Mfr AttributeKey02Series AttributeKey03Package AttributeKey04Product Status AttributeKey05Type AttributeKey06Output Type AttributeKey07Direction AttributeKey08Sensitivity AttributeKey09S/N Ratio AttributeKey10Voltage - Rated AttributeKey11Voltage Range AttributeKey12Current - Supply AttributeKey13Port Location AttributeKey14Ratings AttributeKey15Termination AttributeKey16Size / Dimension AttributeKey17, height_AttribHeight (Max) AttributeKey18Shape DimensionUnitinch Extra Product NameSPH0644LM4H Knowles | Audio Products | DigiKey atoms, moq, multiple1 extraShipping, qtyInStock0 height0.039 MPNSPH0644LM4H SKU14301539 snippetDigital, PDM Microphone MEMS (Silicon) 1.6 V ~ 3.6 V Omnidirectional (-37dB ?1dB @ 94dB SPL) Solder Pads Distributor offers SellerSKUMOQIn stockMultiplePrices Digi-Key1430153911