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Vishay General Semiconductor - Diodes Division SMC3K64CAHM3/57
- Part No.:
- SMC3K64CAHM3/57
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K64CAHM3/57.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,602
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Product details
Overview
SMC3K64CAHM3/57 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 3000 W peak pulse power (10/1000 μs), 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR), and 103 V maximum clamping voltage (VC) at 29.1 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines and MOSFET gates against inductive switching transients.
For engineers reviewing the SMC3K64CAHM3/57 datasheet, SMC3K64CAHM3/57 pinout, SMC3K64CAHM3/57 application, or SMC3K64CAHM3/57 equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, bidirectional polarity requirement, AEC-Q101 qualification for automotive use, and SMC package thermal performance under surge conditions.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by transient overvoltage events exceeding its breakdown threshold. Its low incremental surge resistance and fast response time ensure effective suppression of 10/1000 μs waveform surges without latch-up or degradation under repeated stress.
The SMC3K64CAHM3/57 is designed for unidirectional system-level ESD and surge immunity in bidirectional configurations - no polarity marking required. It meets J-STD-020 MSL Level 1 and supports lead-free reflow up to 260 °C peak temperature, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before conduction begins; sets upper limit for normal circuit operation. |
| VBR min/max | 71.1 V / 78.6 V at 1 mA - guaranteed breakdown range defining turn-on threshold under standardized test current. |
| VC @ IPPM | 103 V at 29.1 A - clamped voltage during 3000 W surge; determines worst-case stress on downstream components. |
| PPPM | 3000 W (10/1000 μs) - peak transient energy handling capacity; defines robustness against lightning or inductive kick. |
| Polarity | Bidirectional - protects both positive and negative transients without external polarity configuration. |
| TJ max | 150 °C - maximum junction temperature; constrains thermal design margin in high-power or high-ambient environments. |
| Qualification | AEC-Q101 - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); copper pad area recommendation: 8.0 mm × 8.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked side) | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping event. |
| Anode | Transient current entry point | Connected to protected line (e.g., CAN_H, LIN, sensor output); voltage referenced to cathode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional polarity | Eliminates need for orientation verification during placement; supports AC-coupled or differential signal line protection. |
| 3000 W peak pulse power | Enables single-device protection against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Level 4 surges in automotive ECUs. |
| AEC-Q101 qualification | Validates reliability for under-hood automotive applications including temperature cycling, humidity bias, and mechanical shock. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing flow. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage overshoot during fast transients, improving margin for 75 V-rated automotive ICs. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Voltage-clamping transient suppressor placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤103 V, preserving ADC integrity and preventing latch-up in 5 V or 3.3 V signal chains. |
Use Scenario: Safeguarding gate drivers and IGBTs in variable-frequency drives subjected to inductive turn-off spikes from 400 V DC bus. IC Role / Device Role / Timing Role: Parallel-connected TVS across gate-source terminals to clamp Miller-induced voltage overshoot. Use Value: Prevents gate oxide breakdown by clamping spikes within 1 ns response, supporting >100 kHz switching frequencies. |
| Telecom Line Interface Protection | Consumer Power Supply Input Protection |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station backhaul equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary surge protection stage before secondary filtering and common-mode chokes. Use Value: Absorbs up to 3000 W of coupled energy while maintaining <2.0 μA leakage at 64 V, minimizing standby power loss. |
Use Scenario: Guarding AC-DC adapter primary-side rectifier outputs and secondary-side 12 V rails against EFT and surge events per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Secondary-level TVS placed after bulk capacitance to suppress residual ringing and cross-talk. Use Value: Delivers 103 V clamping at 29.1 A with <1 ns response, enabling compact layout without sacrificial fusing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMC3K60CAHM3/57 | Lower VWM (60 V), lower VC (96.8 V), higher IPPM (31.0 A) | Better suited for 54 V nominal systems (e.g., 48 V automotive architectures) where tighter clamping margin is critical | Select when system operating voltage is ≤60 V and clamping headroom below 100 V is mandatory |
| SMC3K70CAHM3/57 | Higher VWM (70 V), higher VC (113 V), lower IPPM (26.5 A) | Appropriate for 60 V+ industrial power rails where higher standoff avoids false triggering during ripple | Choose for 72 V battery systems or PoE++ interfaces requiring ≥70 V continuous blocking capability |
Compared with SMC3K64CAHM3/57, SMC3K60CAHM3/57 offers tighter clamping at lower system voltage but reduced surge margin, while SMC3K70CAHM3/57 trades clamping performance for higher standoff - making the SMC3K64CAHM3/57 optimal for 64 V nominal automotive and industrial bus protection where balanced VWM/VC ratio is essential.
Availability
SMC3K64CAHM3/57 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive gate circuits, telecom line interfaces, and consumer power supply inputs requiring stable component supply and AEC-Q101 compliance.
Supply support for SMC3K64CAHM3/57 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 high-reliability and automotive-grade solutions.
The SMC3KxxCAHM3 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh automotive and industrial environments where AEC-Q101 validation and 3000 W surge capability are mandatory.
FAQ
What is the maximum clamping voltage of the SMC3K64CAHM3/57 under full-rated surge current?
The SMC3K64CAHM3/57 has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current of 29.1 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and guarantees worst-case overvoltage stress on protected circuitry during surge events. The clamping behavior remains stable across its -55 °C to +150 °C operating junction temperature range.
Is the SMC3K64CAHM3/57 suitable for new automotive designs?
No - the SMC3K64CAHM3/57 is part of the legacy SMC3K22CA–SMC3K78CA family marked "Not for New Designs" per Vishay document 89433 (Rev. 13-Sep-2022). For new automotive designs, Vishay recommends migrating to the SMC3K10CAHM3_A–SMC3K120CAHM3_A series, which offer enhanced surge lifetime and updated qualification coverage while maintaining SMC package compatibility.
Does the SMC3K64CAHM3/57 require polarity marking during PCB assembly?
No - the SMC3K64CAHM3/57 is a bidirectional TVS diode with no polarity marking on the case. Its symmetrical construction allows mounting in either orientation without functional impact. This eliminates orientation-dependent placement errors and simplifies automated assembly for differential or AC-coupled signal paths.
What is the moisture sensitivity level (MSL) rating for the SMC3K64CAHM3/57?
The SMC3K64CAHM3/57 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard lead-free reflow profiles with peak temperatures up to 260 °C without prior baking. This simplifies manufacturing logistics and eliminates moisture-related defects such as popcorning during reflow soldering.
How does the SMC3K64CAHM3/57 differ from the non-HM3 variant SMC3K64CA-M3/57?
The SMC3K64CAHM3/57 is AEC-Q101 qualified and uses HM3 suffix indicating halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance, whereas SMC3K64CA-M3/57 is commercial-grade (M3 suffix) without automotive qualification. Both share identical electrical specs and SMC package, but only the HM3 version is approved for under-hood automotive use per AEC-Q101 stress testing requirements.
SMC3K64CAHM3/57 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 29.1A
- 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)
SMC3K64CAHM3/57 FAQ
1.How can I place an order for SMC3K64CAHM3/57 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K64CAHM3/57 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 SMC3K64CAHM3/57 reliable?
The price and inventory of SMC3K64CAHM3/57 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K64CAHM3/57 is usually 5 days.
3.What payment methods are accepted for SMC3K64CAHM3/57?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K64CAHM3/57 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K64CAHM3/57?
SMC3K64CAHM3/57 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K64CAHM3/57 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 SMC3K64CAHM3/57?
For technical support, including SMC3K64CAHM3/57 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K64CAHM3/57 requirements.
6.How does Aetrix verify that SMC3K64CAHM3/57 is sourced from the original manufacturer or authorized distributors?
All SMC3K64CAHM3/57 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 SMC3K64CAHM3/57 meets industry standards.
7.What is the process for return or replacement of SMC3K64CAHM3/57?
All SMC3K64CAHM3/57 units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K64CAHM3/57, 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 SMC3K64CAHM3/57 part is unused and in its original packaging.
Return procedure for SMC3K64CAHM3/57:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K64CAHM3/57 Tags
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