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SZ3KASMC78AT3G
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Product Detailed Parameters
- Description：TVS DIODE 78VWM 126VC SMC
- Series：SZ3KASMC
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR)
- Type：Zener
- Bidirectional Channels：-
- Voltage - Reverse Standoff (Typ)：78V (Max)
- Voltage - Breakdown (Min)：86.7V
- Voltage - Clamping (Max) @ Ipp：126V
- Current - Peak Pulse (10/1000µs)：23.8A
- Power - Peak Pulse：3000W (3kW)
- Power Line Protection：No
- Applications：-
- Capacitance @ Frequency：-
- Operating Temperature：-65°C ~ 175°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：DO-214AB, SMC
- Supplier Device Package：SMC
- Unidirectional Channels：1
- Grade：Automotive
- Qualification：AEC-Q101
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Buying Guide
Littelfuse Inc. SZ3KASMC78AT3G is used in TVS Diodes category where integration and verification need to stay predictable. Key specs include Description (TVS DIODE 78VWM 126VC SMC), Series (SZ3KASMC), Type (Zener), Packaging (Tape & Reel (TR)), and Temperature (-65°C ~ 175°C (TJ)).
Selection Notes
- For SZ3KASMC78AT3G, ensure the supply current (23.8A) is acceptable for battery life and thermal limits.
- Confirm the operating temperature range (-65°C ~ 175°C (TJ)) meets your deployment conditions.
- Verify Power - Peak Pulse (3000W (3kW)) and compare it against your reference design limits.
- Make sure the mounting type (Surface Mount) matches how the part will be installed and inspected.
Alternates & Substitutions
- For SZ3KASMC78AT3G, candidates that preserve package DO-214AB, SMC usually stay closest to the same clamp or trip intent.
- For SZ3KASMC78AT3G in TVS Diodes, a useful substitute usually keeps the same clamp, trip, or surge-handling behavior at the product level (key constraints: package DO-214AB, SMC).
- Candidates that preserve package/case DO-214AB, SMC, supplier package SMC, mounting Surface Mount are usually easier to treat as true drop-in alternates on the existing board.
- Compare not just the headline numbers but also the datasheet conditions behind them so paper matches do not turn into application mismatches.
FAQ
What should I compare when selecting an alternate for SZ3KASMC78AT3G?
Compare footprint/pinout, key electrical limits, temperature range, and interface requirements, then validate under worst-case conditions.
Which Voltage - Clamping (Max) @ Ipp is specified for SZ3KASMC78AT3G?
126V
Can you confirm the Grade for SZ3KASMC78AT3G?
Automotive
Which Unidirectional Channels is listed for SZ3KASMC78AT3G?
1
Application Scenarios
A practical check for Littelfuse Inc. SZ3KASMC78AT3G in TVS Diodes is whether the electrical, thermal, and interface assumptions still hold once the part is on the assembled system. In real deployments, engineers often validate with real cable harnesses and grounding paths, because inductance often dominates peak clamping behavior. Selection depends on response time, let-through energy, surge rating, leakage, and coordination with upstream supplies and wiring. Protection devices are most effective when chosen with realistic fault models and validated in compliance testing. In deployed systems, protection reduces downtime from cable faults in always-on racks. In automotive electronics, suppression handles ESD from harness connectors and load dump events without nuisance leakage. In industrial I/O, coordinated protection defends long field wiring against lightning-induced surges and switching spikes.
Compatibility Advice
- With Littelfuse Inc. SZ3KASMC78AT3G, validate recovery behavior and dv/dt interactions with wiring inductance so commutation does not create overvoltage or EMI surprises on the assembled PCB.
- In practice, validate package and creepage paths on the assembled board because contamination and flux residues can reduce spacing margins during bring-up and production test.
Project Fit
- Littelfuse Inc. SZ3KASMC78AT3G is a weaker fit for TVS Diodes when leakage and thermal rise cannot be measured under realistic voltage and temperature conditions because it becomes difficult to prove margin across production variance.
