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Vishay General Semiconductor - Diodes Division SMCJ6.5CAHM3/H
- Part No.:
- SMCJ6.5CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5CAHM3/H.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,147
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Product details
Overview
SMCJ6.5CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 μs), clamping voltage of 11.2 V at 133.9 A IPPM, and operates across –55 °C to +150 °C junction temperature range - deployed in automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SMCJ6.5CAHM3/H datasheet, SMCJ6.5CAHM3/H pinout, SMCJ6.5CAHM3/H application, or SMCJ6.5CAHM3/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, bidirectional clamping behavior, thermal resistance (RθJA = 75 °C/W), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
The SMCJ6.5CAHM3/H implements a glass-passivated silicon avalanche junction optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, supporting protection of AC-coupled or differential signal paths.
Rated for 1500 W peak pulse power under standardized 10/1000 μs waveform, it maintains low incremental surge resistance and stable clamping performance up to TJ = 150 °C, with derating applied above TA = 25 °C per Fig. 2 in the datasheet. The device meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal swing margin for protected line. |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - Confirmed breakdown threshold window ensures reliable turn-on without premature conduction. |
| VC @ IPPM | 11.2 V at 133.9 A - Clamped voltage during 1500 W transient; determines maximum stress imposed on downstream ICs. |
| PPPM | 1500 W (10/1000 μs) - Peak surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 4 compliance designs. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive environments and high-power industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads; informs heatsinking requirements. |
| Construction | Halogen-free, RoHS-compliant, AEC-Q101 qualified - Meets automotive reliability standards and environmental compliance mandates. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional terminal pair | Both terminals function identically; no cathode band marking; enables AC or differential line protection without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - supports deployment in ADAS sensors and body control modules. |
| 1500 W peak pulse power | Withstands severe transients per ISO 7637-2 Pulse 5a/b and IEC 61000-4-5; eliminates need for cascaded protection stages in 24 V systems. |
| 75 °C/W RθJA | Enables direct PCB copper pad thermal management without additional heatsinks in space-constrained modules like ECUs and motor drives. |
| Halogen-free & RoHS-compliant | Fulfills EU ELV and China RoHS requirements; compatible with lead-free reflow profiles up to 260 °C peak temperature. |
| MSL Level 1 rating | Allows unlimited floor life and standard SMT processing without dry-pack or baking - reduces manufacturing overhead in high-volume production. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V/24 V vehicle subsystems. IC Role / Device Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transient energy before reaching interface ICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/100 ms) while surviving >1000 surges due to AEC-Q101 qualification. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to field wiring transients from solenoid switching and motor contactors. IC Role / Device Role: Primary overvoltage clamp on 24 V DC input lines, coordinated with series impedance to limit let-through current. Use Value: Clamps to ≤11.2 V during 133.9 A surge, preventing latch-up or damage to microcontroller GPIOs rated for 3.3 V or 5 V operation. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
|
Use Scenario: Shielding RS-485/RS-422 differential data lines in base station remote units against lightning-induced surges on long outdoor cable runs. IC Role / Device Role: Symmetrical bidirectional clamp across differential pair, referenced to local ground via low-inductance layout. Use Value: Matches differential mode surge immunity requirements (IEC 61000-4-5) with matched VBR and VC in both directions, eliminating polarity sensitivity. |
Use Scenario: Adding secondary-level transient suppression on USB-C and barrel jack inputs of wall adapters after primary MOV/fuse stage. IC Role / Device Role: Final-stage low-capacitance TVS protecting AC-DC controller ICs and feedback optocouplers from fast ESD events. Use Value: Sub-1 ns response time prevents voltage overshoot beyond 11.2 V, preserving isolation barrier integrity and preventing controller reset faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CAHE3/A | Same VWM (6.5 V), lower PPPM (400 W), SMA package (DO-214AC), non-AEC-Q101, commercial grade only. | Limited to low-energy consumer or office equipment; unsuitable for automotive or industrial surge environments requiring 1500 W. | Select when cost and board space are critical and surge threat level is below IEC 61000-4-2 Level 4. |
| SMCJ6.5CA-E3/57T | Identical electrical specs and SMC package, but RoHS-compliant commercial grade (not halogen-free or AEC-Q101 qualified). | Acceptable for non-automotive industrial use where halogen-free and automotive qualification are not mandated. | Choose for general-purpose protection where AEC-Q101 and halogen-free compliance are not required. |
Compared with SMCJ6.5CAHE3/A and SMCJ6.5CA-E3/57T, the SMCJ6.5CAHM3/H uniquely combines 1500 W surge capability, AEC-Q101 qualification, and halogen-free construction - making it the only option qualified for under-hood automotive deployment and high-reliability industrial control systems.
Availability
SMCJ6.5CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interface boards, and consumer power adapter designs requiring stable component supply and full compliance traceability.
Supply support for SMCJ6.5CAHM3/H 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 application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom infrastructure where failure resilience and long-term stability are mandatory.
FAQ
What is the clamping voltage of the SMCJ6.5CAHM3/H under maximum rated surge current?
The SMCJ6.5CAHM3/H clamps to 11.2 V at its peak pulse current (IPPM) of 133.9 A under the standardized 10/1000 μs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number: 88394, Rev. 09-Jan-2024), and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The SMCJ6.5CAHM3/H maintains this clamping performance across its full operating temperature range.
Is the SMCJ6.5CAHM3/H suitable for automotive applications?
Yes, the SMCJ6.5CAHM3/H is AEC-Q101 qualified and explicitly designated for automotive use with the "HM3" suffix indicating halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It meets requirements for under-hood and chassis-mounted modules, including resistance to thermal cycling, humidity, and mechanical shock. The SMCJ6.5CAHM3/H is validated for use in ADAS sensor interfaces, body control units, and infotainment power rails.
Does the SMCJ6.5CAHM3/H have polarity markings?
No, the SMCJ6.5CAHM3/H is a bidirectional TVS diode and carries no polarity marking such as a cathode band. Its symmetrical internal structure allows installation in either orientation on the PCB, simplifying layout and eliminating risk of reverse placement. This design feature makes the SMCJ6.5CAHM3/H ideal for protecting AC-coupled signals, differential buses (e.g., RS-485), and unidirectional lines where polarity may be ambiguous.
What is the thermal resistance of the SMCJ6.5CAHM3/H, and how does it affect PCB layout?
The SMCJ6.5CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value assumes standard FR-4 PCB with no additional heatsinking. To maintain safe junction temperatures under repeated surges, designers must allocate adequate copper area and avoid excessive trace length between the SMCJ6.5CAHM3/H and ground planes. The SMCJ6.5CAHM3/H's low RθJA enables effective self-cooling in compact layouts.
How does the SMCJ6.5CAHM3/H compare to unidirectional variants like SMCJ6.5A-HM3/H?
The SMCJ6.5CAHM3/H is bidirectional with symmetrical clamping in both polarities, whereas SMCJ6.5A-HM3/H is unidirectional and requires correct orientation relative to circuit polarity. The SMCJ6.5CAHM3/H has identical VWM (6.5 V), VBR (7.22–7.98 V), and PPPM (1500 W) ratings but lacks a cathode marking and supports AC or floating signal protection. Use the SMCJ6.5CAHM3/H when protecting differential lines or when polarity cannot be guaranteed; choose the unidirectional version only when DC bias and fixed polarity are assured.
SMCJ6.5CAHM3/H 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 133.9A
- 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)
SMCJ6.5CAHM3/H FAQ
1.How can I place an order for SMCJ6.5CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5CAHM3/H 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 SMCJ6.5CAHM3/H reliable?
The price and inventory of SMCJ6.5CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMCJ6.5CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5CAHM3/H?
SMCJ6.5CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5CAHM3/H 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 SMCJ6.5CAHM3/H?
For technical support, including SMCJ6.5CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5CAHM3/H requirements.
6.How does Aetrix verify that SMCJ6.5CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5CAHM3/H 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 SMCJ6.5CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMCJ6.5CAHM3/H?
All SMCJ6.5CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5CAHM3/H, 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 SMCJ6.5CAHM3/H part is unused and in its original packaging.
Return procedure for SMCJ6.5CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5CAHM3/H Tags
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