W25Q32 SPI Layout: Decoupling, Trace Length, Read Failures
Why a W25Q32 works at 1 MHz and fails at 50: capacitor distance, 40 mm of SCK at 1 ns edges, and the floating /HOLD pin...
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Browse digital isolators & optocouplers available through Chip-seek. Stock, lead time and sourcing availability are subject to confirmation.
140100146000 - WURTH Isolator, LSOP-4
140814242100 - WURTH Isolator, DIP
1ED3141MU12FXUMA1 - Infineon Technologies
223357 - RS Isolator, BGA
2905280 - PHOENIX CONTACT Isolator, Non-IC
4662236 - RS Isolator, Non-IC
4N25 - EVERLIGHT Electronics Isolator, DIP-6
4N25M - onsemi Isolator, DIP-6
4N25S-TA1 - LITE-ON Technology Isolator, 6-SMD
4N25SM - onsemi Isolator, 6-SMD
4N26 - Vishay Isolator, DIP-6
4N27SM - onsemi Isolator, 6-SMD
4N32M - onsemi Isolator, DIP-6
4N33 - Isocom Components Isolator, DIP-6
4N35SM - onsemi Isolator, 6-SMD
4N35SR2M - onsemi, 6-SMD
4N363SD - Rochester Electronics Isolator, 6-SMD
6N135SM - onsemi Isolator, 8-SMD
6N136M - onsemi Isolator, DIP-8
6N136SDM - onsemi Isolator, 8-SMD
6N136TSVM - onsemi Isolator, 8-SMD
6N137 - Isocom Components Isolator, DIP-8
6N137-000E - Broadcom Isolator, DIP-8
6N137-500E - Broadcom Isolator, DIP-8
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From the desk
Market signals, technical notes, and practical sourcing guidance for semiconductor procurement.
Why a W25Q32 works at 1 MHz and fails at 50: capacitor distance, 40 mm of SCK at 1 ns edges, and the floating /HOLD pin...
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A TVS clamps at 31 V, but 10 mm of trace adds 240 V. Placement and return path, not the part number, decide whether the IC...
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The 2N7002 is called logic-level, but at 3.3 V it is a 20 mA switch: threshold spread eats the margin and RDS(on) roughly doubles. Here is...
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How to pick a TVS or ESD diode: match standoff to the rail, clamp to the pin absolute maximum, and capacitance to the interface speed.
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The lowest IC unit price doesn't always mean the lowest procurement cost. Discover how EMS and PCBA buyers can evaluate landed costs, MOQ, reel packaging, BOM...
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Calculate I2C pull-up limits, understand why 4.7 kOhm may fail at 400 kHz, and diagnose parallel module pull-ups, slow edges and voltage-domain mistakes.
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The dual op-amp in a million low-cost designs: why its input range is wider than its output range, and what breaks when you swap it.
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