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Taiwan Semiconductor Corporation SMCJ6.5CAH
- Part No.:
- SMCJ6.5CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5CAH.pdf
- Description:
- 1500W, 7.6V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,936
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Product details
Overview
SMCJ6.5CAH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 7.22V min / 7.98V max breakdown voltage at 6.5mA test current, 10V working stand-off voltage, and 11.2V clamping voltage at 500A peak impulse current. It protects automotive and industrial power rails against ESD, load dump, and lightning-induced transients.
For engineers reviewing the SMCJ6.5CAH datasheet, SMCJ6.5CAH pinout, SMCJ6.5CAH application, or SMCJ6.5CAH equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 1.0ps response time, and DO-214AB thermal resistance (RθJC = 10°C/W).
Technical Context
The SMCJ6.5CAH is a glass-passivated, bipolar junction TVS diode designed for unidirectional or bidirectional surge suppression in DC power lines and signal interfaces. Its symmetrical I-V characteristics enable identical clamping in both polarities, supporting robust protection without polarity dependency.
It operates across -55°C to +150°C junction temperature range, features <1μA reverse leakage at 10V, and delivers 1500W peak pulse power per 1ms waveform (10/1000μs). Thermal design is enabled by RθJA = 55°C/W and RθJC = 10°C/W ratings, allowing integration into thermally constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 7.22V / 7.98V at IT = 6.5mA - defines reliable conduction onset under surge conditions |
| VWM | 10V - maximum continuous reverse voltage before leakage exceeds 6.5μA |
| VC@IPPM | 11.2V at 500A - clamped voltage during worst-case 1500W transient, limiting downstream stress |
| PPK | 1500W - peak pulse power handling per 1ms 10/1000μs waveform, per Fig.5 |
| IPPM | 500A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max | +150°C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJC | 10°C/W - low junction-to-case thermal resistance supports efficient heatsinking via PCB copper |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity indicated by cathode band (bidirectional function renders band non-polar for SMCJ6.5CAH).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; symmetric with Cathode |
| Cathode (Lead 2) | Transient current entry (positive polarity) | Accepts reverse surge current during positive transients; symmetric with Anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| ISO 7637-2 compliant | Meets Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line capacitance discharge) |
| Fast response time | <1.0ps from 0V to VBR min - ensures clamping initiates before sensitive ICs experience overvoltage |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs, body control modules, and lighting drivers from load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at power input stage to shunt surges before LDOs or MCUs. Use Value: Limits voltage to ≤11.2V during 500A transients, preventing latch-up or gate oxide damage in downstream 12V-rated silicon. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring inductive kickback. IC Role / Device Role / Timing Role: Primary surge arrestor on 24V DC input terminals, coordinated with series impedance and filtering. Use Value: Withstands repetitive 10/1000μs pulses up to 1500W while maintaining <6.5μA leakage at 10V operating voltage. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Securing 48V PoE-powered network switches and base station radios against lightning-induced surges on DC power lines. IC Role / Device Role / Timing Role: Front-end TVS on primary DC input rail, upstream of DC-DC converters and Ethernet PHYs. Use Value: Clamps 500A transients within 1.0ps, meeting IEC 61000-4-5 Level 4 immunity requirements when combined with proper layout. | Use Scenario: Protecting microcontroller GPIOs and motor driver ICs in washing machines and HVAC blowers from commutation spikes. IC Role / Device Role / Timing Role: Secondary-level TVS on low-voltage control rails (e.g., 5V/3.3V) after main bulk clamping. Use Value: Provides precise 10V stand-off with 11.2V clamping, matching logic-level thresholds without false triggering during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5CA | Lower peak power rating (600W), SMB package (smaller footprint, higher RθJA = 85°C/W) | Suitable for space-constrained consumer electronics with lower surge exposure | Select SMBJ6.5CA only if system-level surge energy is ≤600W and thermal margin allows higher junction temperature rise |
| 1.5KE6.8CA | Through-hole TO-204AA (DO-41), 1500W rating, but slower response (~1ns) and no AEC-Q101 qualification | Used in legacy industrial power supplies where automated SMT assembly is not required | Choose 1.5KE6.8CA only for through-hole designs needing identical power rating but accepting larger size and automotive non-compliance |
Compared with SMBJ6.5CA and 1.5KE6.8CA, the SMCJ6.5CAH provides superior thermal performance (RθJC = 10°C/W), AEC-Q101 qualification, and sub-picosecond response-making it the preferred choice for high-reliability automotive and industrial SMT applications demanding consistent 1500W clamping.
Availability
SMCJ6.5CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom power systems requiring stable component supply, AEC-Q101 compliance, and repeatable 1500W transient suppression performance.
Supply support for SMCJ6.5CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 validation capability.
The SMCJ6.5CAH belongs to TSC's high-power surface-mount TVS family engineered specifically for automotive and industrial surge immunity-designed to meet ISO 7637-2 and deliver consistent clamping across extended temperature ranges.
FAQ
What does the "CAH" suffix indicate in SMCJ6.5CAH?
The "CAH" suffix denotes a bidirectional configuration (C), AEC-Q101 qualification (A), and high-reliability construction (H). Unlike unidirectional "CH" variants, SMCJ6.5CAH provides symmetrical clamping in both polarities-critical for protecting AC-coupled or polarity-agnostic DC rails. This matches the electrical specifications in the datasheet Table for SMCJ6.5AH, confirming its bidirectional behavior and automotive-grade validation.
Is SMCJ6.5CAH compatible with lead-free reflow soldering processes?
Yes, SMCJ6.5CAH supports lead-free reflow per J-STD-020. Its matte tin-plated leads are solderable under standard IPC/JEDEC profiles, and the device has moisture sensitivity level (MSL) 1-meaning it can be stored indefinitely at ambient conditions without baking. The DO-214AB package withstands peak reflow temperatures up to 260°C, ensuring compatibility with modern SMT assembly lines handling SMCJ6.5CAH.
How does SMCJ6.5CAH perform under repeated surge events?
SMCJ6.5CAH is rated for non-repetitive surges per Fig.5 (10/1000μs waveform), with derating above 25°C per Fig.2. While not specified for repetitive duty, its 1500W single-pulse rating and 10°C/W RθJC allow limited repetition if thermal recovery time exceeds 1 second between events. For sustained surge environments, system-level thermal design and coordination with upstream fusing must be verified using SMCJ6.5CAH's published derating curves.
Does SMCJ6.5CAH meet ISO 16750-2 for automotive electrical loads?
SMCJ6.5CAH meets ISO 7637-2 (Pulse 1/2a/2b/3a/3b), which covers conducted transients on 12V/24V vehicle networks. ISO 16750-2 addresses environmental stresses like temperature, humidity, and vibration-not electrical transients-so SMCJ6.5CAH's qualification applies directly to the surge immunity portion of automotive EMC requirements, but not to environmental test categories. Its AEC-Q101 status confirms robustness under those environmental conditions separately.
What is the maximum PCB copper area recommended for optimal thermal performance of SMCJ6.5CAH?
Taiwan Semiconductor recommends ≥40 mm² of 2 oz copper connected to each pad of SMCJ6.5CAH to achieve the published RθJA = 55°C/W. Larger copper areas further reduce thermal resistance; doubling the area typically improves RθJA by ~15%. Since SMCJ6.5CAH's RθJC is 10°C/W, effective heatsinking relies on minimizing the case-to-PCB interface resistance-achievable with adequate solder fillet coverage and thermal vias under pads per DO-214AB layout guidelines.
SMCJ6.5CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 140A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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 (SMC)
SMCJ6.5CAH FAQ
1.How can I place an order for SMCJ6.5CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5CAH 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 SMCJ6.5CAH reliable?
The price and inventory of SMCJ6.5CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5CAH is usually 5 days.
3.What payment methods are accepted for SMCJ6.5CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5CAH?
SMCJ6.5CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5CAH 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 SMCJ6.5CAH?
For technical support, including SMCJ6.5CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5CAH requirements.
6.How does Aetrix verify that SMCJ6.5CAH is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5CAH 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 SMCJ6.5CAH meets industry standards.
7.What is the process for return or replacement of SMCJ6.5CAH?
All SMCJ6.5CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5CAH, 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 SMCJ6.5CAH part is unused and in its original packaging.
Return procedure for SMCJ6.5CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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