My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMC3K64CA-M3/9A
- Part No.:
- SMC3K64CA-M3/9A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K64CA-M3/9A.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,192
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC3K64CA-M3/9A from Vishay General Semiconductor is a bidirectional surface-mount TRANSZORB® transient voltage suppressor in SMC (DO-214AB) package, rated for 3000 W peak pulse power (10/1000 μs), 71.1–78.6 V breakdown voltage, and 103 V clamping voltage at 29.1 A peak surge current. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in automotive and industrial electronics.
For engineers reviewing the SMC3K64CA-M3/9A datasheet, SMC3K64CA-M3/9A pinout, SMC3K64CA-M3/9A application, or SMC3K64CA-M3/9A equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification (via HM3 suffix variants), 150 °C max junction temperature, UL 497B recognition, and M3-grade halogen-free RoHS-compliant construction.
Technical Context
This device operates as a voltage-clamped crowbar during overvoltage events, leveraging silicon avalanche diode physics to limit transient energy before it reaches downstream circuitry. Its low incremental surge resistance and sub-nanosecond response time ensure effective suppression of fast-rising transients from inductive loads or ESD coupling paths.
The SMC3K64CA-M3/9A is specified for unidirectional mounting only (not recommended for PCB bottom-side wave soldering), with thermal derating applied above 25 °C ambient per JESD22-A104 and compliant with MSL level 1 per J-STD-020 at 260 °C peak reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 3000 W (10/1000 μs waveform) - sustains high-energy transients without failure |
| Breakdown Voltage VBR | 71.1–78.6 V at 1 mA - defines minimum voltage at which avalanche conduction begins |
| Stand-off Voltage VWM | 64 V - maximum continuous reverse operating voltage before leakage exceeds 2 μA |
| Clamping Voltage VC | 103 V at 29.1 A IPPM - limits voltage seen by protected circuit during surge |
| Junction Temperature Range | −55 °C to +150 °C - supports operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - standardized 8.0 mm × 8.0 mm copper pad footprint for thermal reliability |
| Polarity | Bidirectional - symmetric clamping for AC-coupled or floating signal lines |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, halogen-free and RoHS-compliant (M3 grade). Case meets UL 94 V-0 flammability rating. Polarity not marked on bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Anode/Cathode terminal pair | Identical electrical behavior in both directions; no functional anode/cathode distinction in bidirectional mode |
| Anode (unmarked end) | Anode/Cathode terminal pair | Terminal pair forms symmetrical avalanche junction; orientation irrelevant for circuit protection function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant availability | HM3-suffix versions (e.g., SMC3K64CAHM3_A) certified for automotive use - enables drop-in qualification path |
| UL 497B safety recognition | File E136766 - permits use in safety-critical telecom and industrial surge protection circuits without additional certification |
| MSL Level 1 moisture sensitivity | Rated for floor life unlimited at ≤30 °C/85 % RH - eliminates bake requirements prior to reflow |
| Low incremental surge resistance | Enables tighter clamping margin between VWM and VC - reduces stress on downstream components |
| Halogen-free & RoHS-compliant (M3) | Meets JESD201 Class 2 whisker resistance - ensures long-term solder joint integrity in thermal cycling environments |
Applications
| Automotive Powertrain Sensors | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting crankshaft/camshaft position sensor signal lines from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair upstream of signal conditioning amplifier. Use Value: Limits transient voltage to ≤103 V while maintaining 64 V DC operating margin - prevents amplifier saturation and false triggering. |
Use Scenario: Shielding PLC analog input channels from inductive kickback when controlling solenoid valves or contactors. IC Role / Device Role / Timing Role: Standoff protector on 0–10 V or 4–20 mA input terminals, mounted directly at connector interface. Use Value: Absorbs 3000 W surge energy without degradation - preserves measurement accuracy and avoids system reset events. |
| Telecom Line Interface Cards | Consumer Appliance Control Boards |
Use Scenario: Safeguarding Ethernet PHY or DSL line driver ICs from lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Primary-level TVS on RJ-45 magnetics secondary side, coordinated with gas discharge tube (GDT) front-end. Use Value: Fast response (<1 ns) and low clamping voltage enable coordination with GDT holdover - prevents damage to sensitive PHY silicon. |
Use Scenario: Securing microcontroller GPIOs connected to push-button interfaces or relay feedback lines in washing machines or HVAC controllers. IC Role / Device Role / Timing Role: Localized transient suppressor placed adjacent to MCU pin, minimizing trace inductance. Use Value: Withstands repeated 29.1 A surges at 103 V clamp - extends field life beyond 100,000 actuation cycles under ESD stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMC3K64CAHM3_A | AEC-Q101 qualified; identical electrical specs; HM3 suffix denotes automotive qualification grade | Required for new automotive designs; supports PPAP documentation and extended temperature validation | Select when automotive qualification, not just commercial reliability, is mandated |
| SMAJ64A | Lower peak power (400 W), SMA package (smaller thermal mass), unidirectional only | Limited to low-energy transients; unsuitable for load-dump or lightning-level threats | Use only in cost-sensitive consumer applications with <500 W surge exposure |
Compared with SMC3K64CA-M3/9A, the SMC3K64CAHM3_A provides full automotive qualification without electrical trade-offs, while SMAJ64A sacrifices surge robustness and polarity flexibility to reduce size and cost - making it viable only where threat levels are strictly bounded.
Availability
SMC3K64CA-M3/9A is available at Aetrix Electronics and suitable for automotive powertrain sensors, industrial motor drive I/O protection, and telecom line interface cards requiring stable component supply and long-lifecycle support.
Supply support for SMC3K64CA-M3/9A 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, and protection devices with emphasis on reliability and application-specific performance.
The SMC3KxxCA series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where 3000 W surge immunity and AEC-Q101 compatibility are critical.
FAQ
What does the "-M3/9A" suffix mean in SMC3K64CA-M3/9A?
The "-M3" denotes halogen-free, RoHS-compliant, commercial-grade construction meeting JESD201 Class 2 whisker resistance. The "/9A" specifies packaging in 13-inch diameter plastic tape and reel with 3500 units per reel. This distinguishes it from /57 (7-inch reel, 850 units) and HM3 variants intended for automotive qualification. SMC3K64CA-M3/9A is not AEC-Q101 qualified - that requires the HM3 suffix.
Is SMC3K64CA-M3/9A suitable for automotive applications?
SMC3K64CA-M3/9A is not AEC-Q101 qualified; it carries the commercial-grade M3 suffix. For automotive use, Vishay specifies the HM3-suffix variants (e.g., SMC3K64CAHM3_A), which undergo extended temperature cycling, humidity testing, and mechanical stress validation. SMC3K64CA-M3/9A may be used in non-safety-critical aftermarket or prototyping contexts but lacks formal automotive qualification.
What is the clamping voltage of SMC3K64CA-M3/9A at its rated peak pulse current?
The clamping voltage VC of SMC3K64CA-M3/9A is 103 V measured at 29.1 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is guaranteed per the datasheet's Electrical Characteristics table and defines the maximum voltage imposed on protected circuitry during a full-rated surge event. SMC3K64CA-M3/9A maintains this clamping performance across its operating temperature range.
Can SMC3K64CA-M3/9A replace older SMC3K60CA or SMC3K68CA in existing designs?
SMC3K64CA-M3/9A has a stand-off voltage (VWM) of 64 V and breakdown range of 71.1–78.6 V, positioning it between SMC3K60CA (60 V VWM) and SMC3K68CA (68 V VWM). Direct replacement requires verifying that 64 V VWM satisfies system DC bias margins and that 103 V VC remains within downstream component tolerances. SMC3K64CA-M3/9A shares identical SMC package and thermal profile, enabling layout reuse if voltage thresholds align.
Does SMC3K64CA-M3/9A require special PCB layout considerations?
Yes - Vishay specifies a 0.305 × 0.320 inch (7.75 × 8.13 mm) copper pad area per the SMC outline drawing to ensure adequate thermal dissipation during surge events. Traces to SMC3K64CA-M3/9A must be short and wide to minimize inductance; placement should be adjacent to the protected node, not downstream. Bottom-side wave soldering is explicitly not recommended per the datasheet, due to thermal stress risk during assembly.
SMC3K64CA-M3/9A 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMC3K64CA-M3/9A FAQ
1.How can I place an order for SMC3K64CA-M3/9A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K64CA-M3/9A 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 SMC3K64CA-M3/9A reliable?
The price and inventory of SMC3K64CA-M3/9A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K64CA-M3/9A is usually 5 days.
3.What payment methods are accepted for SMC3K64CA-M3/9A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K64CA-M3/9A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K64CA-M3/9A?
SMC3K64CA-M3/9A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K64CA-M3/9A 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 SMC3K64CA-M3/9A?
For technical support, including SMC3K64CA-M3/9A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K64CA-M3/9A requirements.
6.How does Aetrix verify that SMC3K64CA-M3/9A is sourced from the original manufacturer or authorized distributors?
All SMC3K64CA-M3/9A 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 SMC3K64CA-M3/9A meets industry standards.
7.What is the process for return or replacement of SMC3K64CA-M3/9A?
All SMC3K64CA-M3/9A units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K64CA-M3/9A, 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 SMC3K64CA-M3/9A part is unused and in its original packaging.
Return procedure for SMC3K64CA-M3/9A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K64CA-M3/9A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
