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Vishay General Semiconductor - Diodes Division SMCJ64CAHM3/I
- Part No.:
- SMCJ64CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64CAHM3/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,730
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Product details
Overview
SMCJ64CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 64 V standoff voltage (VWM), 1500 W peak pulse power (PPPM), and 103 V clamping voltage (VC) at 14.6 A peak pulse current (IPPM). It protects sensitive ICs and MOSFETs against inductive switching transients and lightning-induced surges in automotive and industrial power rails.
For engineers reviewing the SMCJ64CAHM3/I datasheet, SMCJ64CAHM3/I pinout, SMCJ64CAHM3/I application, or SMCJ64CAHM3/I equivalent, this device is evaluated for bidirectional overvoltage protection in 12–48 V DC systems, ESD/EMI-hardened sensor interfaces, and AEC-Q101-compliant automotive subsystems requiring halogen-free, RoHS-compliant construction.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional CA configuration, enabling clamping of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior, low incremental surge resistance, and fast response time (<1 ns) to transient events defined by the 10/1000 μs waveform standard.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable performance on standard PCB copper pads (8.0 mm × 8.0 mm per terminal) without heatsinking in most applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 48 V nominal systems. |
| VBR min/max | 71.1 V / 78.6 V - Breakdown voltage range at 1 mA test current; ensures predictable turn-on threshold under production variation. |
| VC @ IPPM | 103 V - Clamping voltage at 14.6 A peak pulse current; limits downstream voltage stress during 1500 W transient events. |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 μs waveform; meets IEC 61000-4-5 Level 4 surge immunity requirements. |
| ID @ VWM | 1.0 μA - Reverse leakage at 64 V; negligible power loss and signal integrity impact in standby conditions. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive use and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
SMCJ64CAHM3/I uses the SMC (DO-214AB) package: a two-terminal, symmetrical surface-mount case with no polarity marking for bidirectional operation. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping allows connection across any two points in a differential or single-ended line without orientation concern. |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; copper pad layout (8.0 mm × 8.0 mm per terminal) required to sustain 1500 W pulse without thermal runaway. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled lines or floating DC buses without external polarity management. |
| AEC-Q101 qualified | Validated for automotive powertrain, body control, and ADAS modules where reliability under thermal cycling and vibration is mandatory. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JEDEC J-STD-201 Class 2 whisker resistance; suitable for green manufacturing programs. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection margin for downstream SiC/GaN FETs. |
| MSL Level 1 (260 °C peak) | Allows standard SMT reflow without moisture sensitivity concerns-no baking required prior to assembly. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protection of 48 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across main power input to suppress ±100 V spikes up to 1500 W. Use Value: Prevents latch-up or gate oxide damage in PMICs and microcontrollers during cold-crank and jump-start events. | Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) bidirectional shunt element on 0–10 V or 4–20 mA signal lines. Use Value: Maintains signal fidelity while diverting induced surges from long cable runs exposed to motor drives and welding equipment. |
| Telecom DC Power Feeds | Consumer Device USB-C Power Delivery |
Use Scenario: Input-stage surge suppression on -48 V telecom rectifier outputs feeding base station radios. IC Role / Device Role / Timing Role: Primary-level TVS connected between PWR and GND, rated for repeated 10/1000 μs surges per IEC 61000-4-5. Use Value: Extends mean time between failures (MTBF) of DC-DC converters by limiting transient energy entering regulation circuitry. | Use Scenario: Overvoltage safeguard on USB-C CC and VBUS lines during hot-plug and adapter fault conditions. IC Role / Device Role / Timing Role: Secondary-level protector co-located with ESD arrays, clamping beyond ±20 V excursions. Use Value: Complements integrated ESD diodes by handling higher-energy events (e.g., adapter short-circuit recovery) without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CAHE3/A | Same VWM (64 V) and PPPM (400 W), but lower power rating and SMA package (smaller thermal mass). | Not suitable for 1500 W surge events; limited to sub-400 W IEC 61000-4-5 Level 2/3 applications. | Select only when board space is constrained and surge threat level is low (e.g., internal signal lines). |
| SMCJ64AHE3/A | Unidirectional version with identical VWM, PPPM, and package; cathode band marking required for correct orientation. | Cannot protect AC or floating nodes; requires polarity-aware layout and adds design risk in differential or unknown-polarity circuits. | Choose only when system ground reference is fixed and reverse conduction must be blocked (e.g., DC bias rails). |
Compared with SMAJ64CAHE3/A and SMCJ64AHE3/A, the SMCJ64CAHM3/I delivers full 1500 W bidirectional clamping in a halogen-free, AEC-Q101-qualified package-making it the only option among the three validated for automotive 48 V power distribution and industrial mains-connected equipment.
Availability
SMCJ64CAHM3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor conditioning, telecom DC feeds, and consumer USB-C power delivery requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ64CAHM3/I 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, efficiency, and automotive-grade qualification.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments, targeting AEC-Q101 compliance, robust thermal performance, and compatibility with automated manufacturing processes.
FAQ
What does the "HM3" suffix indicate in SMCJ64CAHM3/I?
The HM3 suffix in SMCJ64CAHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with JEDEC J-STD-201 Class 2 whisker resistance, UL 94 V-0 flammability, and automotive reliability testing-making SMCJ64CAHM3/I suitable for under-hood and safety-critical applications where material content and long-term stability are mandated.
Is SMCJ64CAHM3/I pin-compatible with unidirectional SMCJ64AHM3/I?
No, SMCJ64CAHM3/I is not pin-compatible with SMCJ64AHM3/I in functional terms despite identical SMC (DO-214AB) packaging. The "CA" suffix indicates bidirectional operation with no polarity marking, whereas "A" denotes unidirectional with cathode band. Layouts for SMCJ64AHM3/I require orientation-aware placement; using SMCJ64CAHM3/I in its place eliminates polarity constraints but does not guarantee identical electrical behavior in DC-biased circuits.
What is the maximum clamping voltage VC for SMCJ64CAHM3/I at its rated peak pulse current?
The maximum clamping voltage VC for SMCJ64CAHM3/I is 103 V at 14.6 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 1500 W transient event, ensuring downstream components such as 100 V-rated MOSFETs or 75 V LDOs remain within safe operating area.
Does SMCJ64CAHM3/I meet automotive qualification standards?
Yes, SMCJ64CAHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and Vishay documentation. It has undergone stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-validating its suitability for automotive powertrain, body electronics, and ADAS subsystems where failure modes must be rigorously controlled.
How does the thermal resistance of SMCJ64CAHM3/I affect PCB layout?
The thermal resistance RθJA of SMCJ64CAHM3/I is 75 °C/W, which requires minimum 8.0 mm × 8.0 mm copper pads per terminal to dissipate 6.5 W continuously and sustain 1500 W transient pulses. Reducing pad size increases junction temperature, risking parametric shift or catastrophic failure during repeated surges-so SMCJ64CAHM3/I layout must follow Vishay's recommended mounting pad dimensions without compromise.
SMCJ64CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ64CAHM3/I FAQ
1.How can I place an order for SMCJ64CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64CAHM3/I 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 SMCJ64CAHM3/I reliable?
The price and inventory of SMCJ64CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ64CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64CAHM3/I?
SMCJ64CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64CAHM3/I 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 SMCJ64CAHM3/I?
For technical support, including SMCJ64CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64CAHM3/I requirements.
6.How does Aetrix verify that SMCJ64CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ64CAHM3/I 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 SMCJ64CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ64CAHM3/I?
All SMCJ64CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64CAHM3/I, 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 SMCJ64CAHM3/I part is unused and in its original packaging.
Return procedure for SMCJ64CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64CAHM3/I Tags
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