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Vishay General Semiconductor - Diodes Division SMC3K54CAHM3/9A
- Part No.:
- SMC3K54CAHM3/9A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K54CAHM3/9A.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,538
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Product details
Overview
SMC3K54CAHM3/9A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 60.0–66.3 V breakdown voltage, and 87.1 V maximum clamping voltage at 34.4 A peak pulse current. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC3K54CAHM3/9A datasheet, SMC3K54CAHM3/9A pinout, SMC3K54CAHM3/9A application, or SMC3K54CAHM3/9A equivalent, key selection criteria include clamping voltage margin relative to protected circuit's absolute maximum rating, bidirectional polarity requirement, AEC-Q101 qualification status, and compatibility with 13" tape-and-reel handling for automated assembly.
Technical Context
The SMC3K54CAHM3/9A operates as a silicon avalanche diode with symmetrical bidirectional conduction, enabling suppression of both positive and negative transients without external polarity management. Its low incremental surge resistance and fast response time ensure effective clamping during inductive switching events and lightning-induced surges.
Rated for operation from –55 °C to +150 °C junction temperature, it meets J-STD-020 MSL Level 1 and supports lead-free reflow up to 260 °C peak. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification - critical for automotive under-hood and body-control module deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000 W (10/1000 μs waveform) - sustains high-energy surges without failure in automotive load-dump or ISO 7637-2 transient scenarios |
| Breakdown Voltage VBR | 60.0–66.3 V at 1.0 mA - defines minimum voltage at which avalanche conduction begins; ensures reliable turn-on before protected circuit exceeds safe operating limits |
| Stand-off Voltage VWM | 54 V - maximum continuous reverse voltage before leakage exceeds 2.0 μA; sets upper limit for normal operating bias |
| Clamping Voltage VC | 87.1 V at 34.4 A IPPM - actual voltage seen by protected device during worst-case surge; must be below downstream IC's absolute maximum rating |
| Operating Temperature | –55 °C to +150 °C - enables deployment in engine control units, battery management systems, and industrial motor drives with wide ambient swings |
| Qualification | AEC-Q101 qualified - validated for automotive reliability including HTOL, temperature cycling, and ESD testing per stress test plan |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional polarity - no marking on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Surge current return path | Both terminals are electrically symmetrical; either terminal serves as cathode or anode depending on transient polarity - no orientation required during placement |
| Anode (Cathode) | Surge current entry point | Identical to opposite terminal; bidirectional behavior eliminates need for polarity-aware PCB layout or assembly verification |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional polarity | Eliminates polarity-check step in SMT line and avoids misorientation failures in high-volume automotive production |
| 3000 W peak pulse power | Withstands ISO 16750-2 load dump pulses and IEC 61000-4-5 combination wave surges without degradation |
| AEC-Q101 qualification | Validated for automotive-grade lifetime reliability including 1000-hour HTOL at 150 °C and 1000-cycle temperature cycling (–40 °C to +125 °C) |
| MSL Level 1 moisture sensitivity | Enables direct use from reel without baking - reduces manufacturing overhead and prevents moisture-related popcorning during reflow |
| Halogen-free & RoHS | Complies with EU Directive 2011/65/EU and IPC-1752A material declaration requirements for Tier 1 automotive supply chain |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protection of microcontroller I/O and CAN transceiver pins against load-dump transients and alternator ripple during ignition cycling. IC Role / Device Role / Timing Role: Bidirectional TVS clamps both positive and negative voltage excursions on 5 V and 12 V signal/power rails. Use Value: Prevents latch-up or gate oxide damage in MCU and transceiver ICs by limiting clamped voltage to 87.1 V while absorbing 3000 W surges. |
Use Scenario: Guarding isolated gate driver inputs and feedback sensing lines in variable-frequency drives exposed to inductive kickback from IGBT switching. IC Role / Device Role / Timing Role: Fast-response avalanche diode shunts transient energy away from precision op-amps and optocouplers before propagation. Use Value: Maintains signal integrity across isolation barriers by clamping within 1 ns, with <2.0 μA leakage at 54 V stand-off to avoid DC offset errors. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding LIN bus transceivers and LED driver ICs from ESD and relay-coil flyback in door module and lighting control circuits. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs ±15 kV contact ESD per IEC 61000-4-2 while remaining non-conductive during normal 12 V operation. Use Value: Enables single-device protection without series resistors or RC filters - reducing BOM count and board space in space-constrained modules. |
Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs subjected to lightning-induced surges per IEC 61000-4-5 Level 4. IC Role / Device Role / Timing Role: High-power TVS placed directly after input filter capacitor to clamp common-mode and differential-mode transients before DC-DC converters. Use Value: Delivers 34.4 A peak surge current handling with 87.1 V clamping - ensuring downstream converters remain within 60 V absolute maximum rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMC3K54CAHM3_A | Same electrical specs and AEC-Q101 qualification; differs only in suffix notation - underscore "_A" denotes updated packaging documentation, not functional change | No functional difference; identical use in automotive ECUs and industrial controls | Select SMC3K54CAHM3_A when sourcing from distributors listing the underscored variant; fully interchangeable with SMC3K54CAHM3/9A |
| SMC3K51CAHM3/9A | Lower breakdown (56.7–62.7 V) and clamping (82.4 V); same 3000 W rating and SMC package | Better suited for 48 V systems where tighter clamping margin is needed below 85 V; less margin for 60 V nominal rails | Choose SMC3K51CAHM3/9A when protecting 48 V subsystems with lower absolute maximum ratings; verify VBR margin against system overvoltage tolerance |
Compared with SMC3K54CAHM3/9A, SMC3K54CAHM3_A offers identical performance with updated documentation formatting, while SMC3K51CAHM3/9A provides lower clamping for 48 V applications but reduced margin on 60 V rails - requiring explicit voltage-margin validation per circuit.
Availability
SMC3K54CAHM3/9A is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and telecom power supply input stages requiring stable component supply, AEC-Q101 compliance, and 13-inch tape-and-reel delivery for high-throughput SMT lines.
Supply support for SMC3K54CAHM3/9A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMC3KxxCAHM3 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness and long-term stability are mandatory.
FAQ
What does the "HM3" suffix mean in SMC3K54CAHM3/9A?
The "HM3" suffix in SMC3K54CAHM3/9A indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this grade from commercial "M3" variants and confirms compliance with automotive reliability standards including high-temperature operating life and thermal cycling. SMC3K54CAHM3/9A meets JESD 201 Class 2 whisker resistance and UL 497B safety recognition.
Is SMC3K54CAHM3/9A suitable for new automotive designs?
SMC3K54CAHM3/9A remains actively manufactured and supported for new automotive designs. Although the family datasheet notes "Not for New Designs" for legacy SMC3K22CA–SMC3K78CA base numbers, the HM3-suffixed versions like SMC3K54CAHM3/9A are explicitly listed as qualified alternatives and are AEC-Q101 certified for current production. SMC3K54CAHM3/9A is appropriate for ECUs, BCMs, and ADAS power domains.
What is the clamping voltage of SMC3K54CAHM3/9A at rated surge current?
The clamping voltage of SMC3K54CAHM3/9A is 87.1 V measured at 34.4 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value represents the maximum voltage imposed on protected circuitry during worst-case surge events and must be verified against the absolute maximum ratings of downstream components such as microcontrollers or transceivers in the SMC3K54CAHM3/9A application.
Does SMC3K54CAHM3/9A have polarity markings on the package?
No, SMC3K54CAHM3/9A has no polarity markings on the SMC (DO-214AB) package because it is a bidirectional TVS diode. Both terminals are functionally identical, allowing unrestricted orientation during PCB placement. This eliminates polarity verification steps in automated assembly and prevents field failures due to reversed mounting - a key advantage confirmed in the official Vishay datasheet for SMC3K54CAHM3/9A.
What tape-and-reel configuration does SMC3K54CAHM3/9A ship in?
SMC3K54CAHM3/9A ships in 13-inch diameter plastic tape-and-reel packaging with a base quantity of 3500 units per reel, indicated by the "/9A" suffix. This format is optimized for high-speed pick-and-place equipment used in automotive and industrial electronics manufacturing. The reel complies with EIA-481-D standards and supports lead-free reflow profiles up to 260 °C peak temperature.
SMC3K54CAHM3/9A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 34.4A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC3K54CAHM3/9A FAQ
1.How can I place an order for SMC3K54CAHM3/9A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K54CAHM3/9A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMC3K54CAHM3/9A reliable?
The price and inventory of SMC3K54CAHM3/9A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K54CAHM3/9A is usually 5 days.
3.What payment methods are accepted for SMC3K54CAHM3/9A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K54CAHM3/9A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K54CAHM3/9A?
SMC3K54CAHM3/9A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K54CAHM3/9A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMC3K54CAHM3/9A?
For technical support, including SMC3K54CAHM3/9A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K54CAHM3/9A requirements.
6.How does Aetrix verify that SMC3K54CAHM3/9A is sourced from the original manufacturer or authorized distributors?
All SMC3K54CAHM3/9A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMC3K54CAHM3/9A meets industry standards.
7.What is the process for return or replacement of SMC3K54CAHM3/9A?
All SMC3K54CAHM3/9A units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K54CAHM3/9A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMC3K54CAHM3/9A part is unused and in its original packaging.
Return procedure for SMC3K54CAHM3/9A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K54CAHM3/9A Tags
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