Engineering insight · 8 min read
Coin-Cell Sleep Current: Find the Missing Microamps
Locate unexpected current in a coin-cell device by separating measurement artifacts, firmware events, external power paths and component leakage.
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FEATURED BLOG GUIDE / SMALL-FORMAT PRIMARY POWER
Coin-Cell Sleep Current: Find the Missing Microamps
Locate unexpected current in a coin-cell device by separating measurement artifacts, firmware events, external power paths and component leakage.
Read the featured guide ↗6 original guides · Jetray editorial team · Updated 5 November 2026
Engineering insight · 6 min read
Primary Coin Cells: Find Reverse-Current Paths
Review normal, powered, unpowered and fault states so a primary coin-cell backup path cannot be mistaken for a rechargeable battery circuit.
Read the guideEngineering insight · 6 min read
Coin-Cell Cutoff and Capacitors: Avoid Brownout Loops
Define the rail-voltage boundary, timing and recovery policy before using a capacitor to support a coin-cell device's short events.
Read the guideEngineering insight · 3 min read
Primary or Rechargeable Coin Cell: Start with the Circuit
Choose a coin-cell family by chemistry, voltage, charging behavior and load rather than diameter alone.
Read the guideEngineering insight · 3 min read
Why Coin-Cell Runtime Needs More Than a Capacity Number
Build a realistic coin-cell evaluation around standby current, transmission pulses, temperature and the equipment cutoff voltage.
Read the guideEngineering insight · 3 min read
Coin-Cell Terminals and Holders: What to Include in an OEM RFQ
Make a coin-cell inquiry precise with cell identity, terminal drawings, PCB constraints, packaging and device evaluation requirements.
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| Start here when… | Consider these questions | Read next |
|---|---|---|
| You are defining the requirement. | Define the symptom in charge per event · Verify that the instrument is observing the intended circuit | Coin-Cell Sleep Current: Find the Missing Microamps |
| You are integrating a configuration. | Draw power states as well as a nominal schematic · Use the primary-cell manufacturer's isolation guidance | Primary Coin Cells: Find Reverse-Current Paths |
| You are preparing an RFQ or evaluation. | Define which function must survive the lowest voltage · Allocate a voltage-drop budget before choosing a capacitor | Coin-Cell Cutoff and Capacitors: Avoid Brownout Loops |
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