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Home Products Circuit Protection Transient Voltage Suppressors (TVS) - TVS Diodes MSMCG22AE3
MSMCG22AE3
Part Number MSMCG22AE3
Manufacturer Microchip Technology
Description TVS DIODE 22VWM 35.5VC SMCG
Quantity Available 23670 pcs new original in stock.
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Datasheets 1.MSMCG22AE3.pdf2.MSMCG22AE3.pdf
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Technical Information of MSMCG22AE3
Manufacturer Part Number MSMCG22AE3 Category Circuit Protection
Manufacturer Micrel / Microchip Technology Description TVS DIODE 22VWM 35.5VC SMCG
Package / Case SMCG (DO-215AB) Quantity Available 23670 pcs
Voltage - Reverse Standoff (Typ) 22V Voltage - Clamping (Max) @ Ipp 35.5V
Voltage - Breakdown (Min) 24.4V Unidirectional Channels 1
Type Zener Supplier Device Package SMCG (DO-215AB)
Series Military, MIL-PRF-19500 Power Line Protection No
Power - Peak Pulse 1500W (1.5kW) Package / Case DO-215AB, SMC Gull Wing
Package Bulk Operating Temperature -65°C ~ 150°C (TJ)
Mounting Type Surface Mount Current - Peak Pulse (10/1000µs) 42.2A
Capacitance @ Frequency - Base Product Number SMCG22
Applications General Purpose  
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Frequently Asked Questions

  • How does the 22V reverse standoff voltage of the MSMCG22AE3 influence leakage current in sensitive analog circuits? The 22V reverse standoff voltage of the MSMCG22AE3 keeps reverse leakage minimal below this threshold, allowing it to integrate seamlessly into low-voltage signal paths without introducing significant offset currents that could degrade precision measurements.
  • What is the significance of the 24.4V minimum breakdown voltage for the MSMCG22AE3 in transient event scenarios? With a minimum breakdown voltage of 24.4V, the MSMCG22AE3 provides a controlled zener conduction point 2.4V above the standoff, ensuring that transient voltages are suppressed without false triggering under normal operating conditions up to 22V.
  • In what manner does the 35.5V maximum clamping voltage of the MSMCG22AE3 protect downstream components from overvoltage spikes? The 35.5V clamping voltage of the MSMCG22AE3 rapidly diverts surge energy to ground, limiting voltage excursions to levels that protect semiconductors rated at 30V or below, though this requires careful matching to avoid clamping at levels that could stress certain ICs.
  • How can the 42.2A peak pulse current rating of the MSMCG22AE3 be applied to estimate surge energy absorption in power line applications? The 42.2A peak pulse current of the MSMCG22AE3 for a 10/1000µs waveform corresponds to approximately 1.5kW of peak power, enabling the component to absorb energies typical of switching transients or ESD events without exceeding its thermal limits in most general purpose setups.
  • Why is the 1500W peak pulse power rating of the MSMCG22AE3 essential when evaluating protection for communication interfaces? The 1500W peak pulse power of the MSMCG22AE3 supports handling of high-energy transients in communication systems, but engineers must calculate the total energy from expected surges to confirm if single-device protection suffices or if derating is needed.
  • How does the -65°C to 150°C operating temperature range of the MSMCG22AE3 affect its reliability in industrial control systems? The broad temperature range of the MSMCG22AE3 from -65°C to 150°C supports continuous operation in harsh industrial environments where thermal cycling is common, reducing the need for external temperature compensation circuits.
  • What design trade-offs arise when using the surface mount DO-215AB package of the MSMCG22AE3 in high-density PCB layouts? The compact SMC Gull Wing package of the MSMCG22AE3 facilitates space-saving board designs, but the thermal resistance must be considered to prevent junction temperature from exceeding 150°C under high current transients.
  • Is the unidirectional nature of the MSMCG22AE3 a limitation for circuits with bidirectional current flow? The unidirectional zener configuration of the MSMCG22AE3 restricts its use to circuits where current direction is consistent, potentially requiring additional protection devices for applications with reverse currents to prevent shunting in the wrong direction.
  • When comparing the MSMCG22AE3 to other unidirectional TVS diodes, what performance edge does its military qualification provide? The MIL-PRF-19500 qualification of the MSMCG22AE3 ensures tighter control over clamping voltage variation and higher reliability in vibration and thermal shock tests compared to standard unidirectional TVS devices, supporting use in mission-critical systems.
  • How does the MSMCG22AE3 perform relative to higher voltage standoff options like 33V models in low-voltage protection schemes? The 22V standoff of the MSMCG22AE3 allows protection for circuits with operating voltages up to 22V while clamping at 35.5V, whereas higher standoff models would permit higher normal voltages but might require different clamping strategies for the same surge levels.
  • In automotive electronics applications, what constraints limit the use of the MSMCG22AE3? While the MSMCG22AE3 offers military-grade reliability suitable for automotive, its general purpose applications and lack of specific AEC-Q qualification may necessitate additional derating or external circuitry for high-reliability automotive transient protection.
  • What replacement strategy is advisable when migrating from older unidirectional TVS to the MSMCG22AE3 in existing designs? When replacing legacy unidirectional TVS, the MSMCG22AE3 can be directly substituted if the board footprint matches the SMCG package, but verify the clamping voltage remains below component ratings and recalculate power dissipation based on the 1500W rating.
  • How does the military qualification of the MSMCG22AE3 influence its selection over commercial alternatives in ruggedized equipment? The MIL-PRF-19500 qualification of the MSMCG22AE3 provides documented performance across temperature extremes and ensures long-term stability, making it preferable for ruggedized applications where commercial parts might fail premature life testing.
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