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Vishay General Semiconductor - Diodes Division SMCJ6.5CAHM3/I
- Part No.:
- SMCJ6.5CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5CAHM3/I.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,074
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Product details
Overview
SMCJ6.5CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features 6.5 V stand-off voltage (VWM), 11.2 V maximum clamping voltage (VC) at 133.9 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interface protection and industrial I/O line surge suppression.
For engineers reviewing the SMCJ6.5CAHM3/I datasheet, SMCJ6.5CAHM3/I pinout, SMCJ6.5CAHM3/I application, or SMCJ6.5CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), junction temperature range (–55 to +150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) ranging from 7.22 V to 7.98 V at 10 mA test current. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching transients without affecting normal signal integrity.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it meets MSL Level 1 per J-STD-020 (peak reflow 260 °C) and supports automotive-grade reliability via AEC-Q101 qualification - confirmed by HM3 suffix and ordering code SMCJ6.5CAHM3/I.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum reverse stand-off voltage before clamping begins; ensures no conduction during normal operation. |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - defines guaranteed breakdown threshold for bidirectional clamping action. |
| VC @ IPPM | 11.2 V at 133.9 A - clamped voltage under 10/1000 μs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 1500 W - peak pulse power handling capability; enables robust protection against high-energy transients. |
| ID @ VWM | 500 μA - maximum reverse leakage at 6.5 V; ensures minimal standby current draw in sensitive circuits. |
| TJ max | +150 °C - maximum operating junction temperature; supports under-hood automotive and industrial environments. |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient; informs PCB pad layout and derating above 25 °C ambient. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. Polarity: unmarked for bidirectional devices; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A | One side of bidirectional clamping path; connects to protected line or ground reference point. |
| Cathode | Terminal K | Other side of bidirectional clamping path; functionally identical to Anode in CA-type devices; no polarity marking. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and infotainment interfaces. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global electronics manufacturing and end-of-life recycling. |
| Low clamping ratio (VC/VWM) | 1.72 - tight ratio ensures minimal overvoltage stress on downstream ICs during surge events. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-related failure risk. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed between connector and transceiver IC input pins. Use Value: Limits transient voltage to ≤11.2 V during 133.9 A surge, preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor front-ends. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback and field wiring surges. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at terminal block entry point before optocoupler or Schmitt trigger input stage. Use Value: Absorbs 1500 W pulses without degradation, enabling reliable operation in factory-floor environments with frequent motor switching noise. |
| Telecom Line Interface Protection | Consumer Appliance Power Supply Input |
|
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers connected to external cabling exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) or primary MOV in multi-stage telecom surge protection network. Use Value: Fast <1 ns response complements slower primary protectors, clamping residual transients to safe levels before reaching silicon. |
Use Scenario: Protecting AC-DC adapter input rectifier stages and primary-side controller ICs in white goods and HVAC systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across bridge rectifier output or bulk capacitor to suppress line-to-line and line-to-ground transients. Use Value: Withstands repeated 1500 W surges while maintaining 6.5 V stand-off, reducing need for oversized capacitors or redundant protection schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (~110 °C/W). | Suitable for lower-energy transients and space-constrained consumer designs; not AEC-Q101 qualified. | Select when cost or board area is prioritized over automotive reliability and high-surge capability. |
| SMCJ6.5CAHE3/I | Same electrical specs and SMC package, but RoHS-compliant commercial grade (not halogen-free); lacks JESD201 Class 2 whisker rating. | Applicable in non-automotive industrial or computing applications where halogen-free requirement is absent. | Choose for legacy BOM compatibility or where halogen-free certification is not mandated by end-customer. |
Compared with SMAJ6.5CA and SMCJ6.5CAHE3/I, the SMCJ6.5CAHM3/I uniquely combines 1500 W surge capacity, AEC-Q101 qualification, halogen-free construction, and JESD201 Class 2 whisker resistance - making it the only option meeting full automotive Tier-1 supplier requirements for critical sensor interfaces.
Availability
SMCJ6.5CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMCJ6.5CAHM3/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 application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where sustained surge immunity and long-term stability are mandatory.
FAQ
What does the "CA" suffix indicate in SMCJ6.5CAHM3/I?
The "CA" suffix denotes a bidirectional configuration, meaning the SMCJ6.5CAHM3/I provides symmetrical clamping in both forward and reverse directions - essential for protecting AC-coupled signals, differential buses like RS-485, or floating inputs where polarity cannot be assumed. This differs from unidirectional "A" variants that clamp only in reverse bias.
Is SMCJ6.5CAHM3/I qualified for automotive use?
Yes, SMCJ6.5CAHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and Vishay's official documentation. It meets rigorous stress testing for temperature cycling, humidity, mechanical shock, and lifetime reliability required for under-hood and cabin electronics - including engine control modules, ADAS camera interfaces, and body control units.
What is the maximum clamping voltage of SMCJ6.5CAHM3/I under surge conditions?
The SMCJ6.5CAHM3/I has a maximum clamping voltage (VC) of 11.2 V at 133.9 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the highest voltage seen across the device during standardized surge testing - critical for ensuring downstream ICs remain within safe operating limits.
How does the halogen-free construction of SMCJ6.5CAHM3/I impact its performance?
The halogen-free construction of SMCJ6.5CAHM3/I complies with IEC 61249-2-21 and regional environmental regulations without compromising electrical or thermal performance. It maintains identical VWM (6.5 V), VC (11.2 V), and PPPM (1500 W) ratings as halogen-containing variants, while also meeting JESD201 Class 2 whisker resistance for long-term solder joint reliability.
Can SMCJ6.5CAHM3/I be used in place of SMCJ6.5A in a design?
No - SMCJ6.5CAHM3/I is bidirectional, whereas SMCJ6.5A is unidirectional. Substituting them requires verifying circuit topology: SMCJ6.5A includes a cathode band for polarity-sensitive placement and conducts forward current up to 200 A (IFSM), while SMCJ6.5CAHM3/I has no polarity marking and blocks in both directions until breakdown. Using the wrong type may cause unintended conduction or failed protection.
SMCJ6.5CAHM3/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):
- 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/I FAQ
1.How can I place an order for SMCJ6.5CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5CAHM3/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 SMCJ6.5CAHM3/I reliable?
The price and inventory of SMCJ6.5CAHM3/I 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/I is usually 5 days.
3.What payment methods are accepted for SMCJ6.5CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5CAHM3/I?
SMCJ6.5CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5CAHM3/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 SMCJ6.5CAHM3/I?
For technical support, including SMCJ6.5CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5CAHM3/I requirements.
6.How does Aetrix verify that SMCJ6.5CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5CAHM3/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 SMCJ6.5CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ6.5CAHM3/I?
All SMCJ6.5CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5CAHM3/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 SMCJ6.5CAHM3/I part is unused and in its original packaging.
Return procedure for SMCJ6.5CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5CAHM3/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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