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Vishay General Semiconductor - Diodes Division SMCJ6.5CA/57T
- Part No.:
- SMCJ6.5CA/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5CA/57T.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,350
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Product details
Overview
SMCJ6.5CA/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for clamping voltage transients on signal or power lines. It features a 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 - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMCJ6.5CA/57T datasheet, SMCJ6.5CA/57T pinout, SMCJ6.5CA/57T application, or SMCJ6.5CA/57T equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, low incremental surge resistance, UL 94 V-0 molding compound, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ6.5CA/57T operates as a bi-directional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or floating signal paths without polarity sensitivity. Its glass passivated junction ensures stable leakage performance and fast response time (<1 ns) to ESD and lightning-induced surges.
Thermal design relies on low junction-to-lead thermal resistance (RθJL = 15 °C/W) and derating above 25 °C ambient per Fig. 2; it sustains 200 A non-repetitive forward surge (IFSM) only in uni-directional variants - not applicable to SMCJ6.5CA/57T due to bi-directional construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse stand-off voltage before clamping begins |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 11.2 V at 133.9 A - clamped voltage during 1500 W transient, limiting stress on downstream components |
| PPPM | 1500 W - peak power handling for 10/1000 µs waveform, critical for IEC 61000-4-5 compliance |
| ID @ VWM | 500 µA - maximum reverse leakage at 6.5 V, ensuring minimal standby power loss |
| TJ max | +150 °C - maximum junction temperature, supporting under-hood automotive use |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation, compatible with standard reflow profiles up to 260 °C peak |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bi-directional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals - either end serves as anode or cathode depending on transient polarity; no band marking |
| Case (body) | Thermal and mechanical interface | DO-214AB molded body provides UL 94 V-0 flammability rating and mechanical anchoring to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over lifetime and temperature |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for sensitive ICs |
| MSL Level 1 | Enables direct placement into high-temperature reflow without dry-pack or baking requirements |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for industrial and transportation equipment enclosures |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed across power rail input prior to DC/DC converter. Use Value: Limits voltage to ≤11.2 V during 1500 W surges, preventing latch-up or damage to 16 V-rated regulators and microcontrollers. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and inductive switching noise in PLC modules. IC Role / Device Role / Timing Role: Low-capacitance bi-directional suppressor on 0–5 V or 4–20 mA signal lines. Use Value: Maintains signal integrity with <500 µA leakage at 6.5 V, while clamping ±15 kV contact ESD per IEC 61000-4-2. |
| Telecom Interface Port Protection | Consumer Device USB/UART Lines |
Use Scenario: Safeguarding RS-485 transceivers connected to outdoor cabling exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential bus lines, paired with GDT or MOV for staged protection. Use Value: Withstands repeated 10/1000 µs transients up to 133.9 A, preserving data integrity without degradation after 1000 surges. | Use Scenario: Adding robustness to USB 2.0 D+/D− or UART TX/RX traces in smart home hubs subject to user-handling ESD. IC Role / Device Role / Timing Role: Bi-directional clamping device mounted adjacent to connector, before ESD filter or transceiver. Use Value: Responds in <1 ns to ±8 kV air discharge, holding line voltage below 11.2 V to prevent transceiver latch-up or I/O damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA | Lower PPPM (400 W), smaller DO-214AC (SMA) package, higher RθJA (110 °C/W) | Suitable for lower-energy transients; limited to consumer-grade environments due to non-AEC-Q101 rating | Select when board space is constrained and surge energy does not exceed 400 W. |
| SMCJ6.5CAHE3/57T | Identical electrical specs; HE3 suffix denotes AEC-Q101 qualification and JESD 201 class 2 whisker resistance | Same functional role; required for automotive OEM designs requiring full qualification traceability | Choose for production automotive programs where process reliability documentation is mandatory. |
Compared with SMAJ6.5CA and SMCJ6.5CAHE3/57T, the SMCJ6.5CA/57T delivers full 1500 W surge capacity and AEC-Q101 qualification in a standard commercial-grade variant - making it optimal for industrial and Tier-2 automotive applications where cost and performance balance is prioritized over extended qualification reporting.
Availability
SMCJ6.5CA/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom port surge suppression requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMCJ6.5CA/57T 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMCJ6.5CA/57T belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered for robust transient immunity in harsh environments including automotive, industrial automation, and infrastructure communications.
FAQ
What is the clamping voltage of the SMCJ6.5CA/57T under maximum rated surge current?
The SMCJ6.5CA/57T clamps to a maximum of 11.2 V when subjected to its rated peak pulse current of 133.9 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMCJ6.5CA/57T suitable for automotive applications?
Yes, the SMCJ6.5CA/57T is AEC-Q101 qualified and designed for automotive use, including engine control units, body electronics, and infotainment systems. Its DO-214AB package, 150 °C junction rating, and validated performance under temperature cycling and humidity testing meet Tier-1 supplier requirements for under-hood and cabin-mounted modules.
Does the SMCJ6.5CA/57T have polarity markings on the package?
No, the SMCJ6.5CA/57T is a bi-directional TVS diode and carries no cathode band or polarity marking. Its symmetrical construction allows installation in either orientation across protected lines - simplifying layout and eliminating risk of reverse placement during automated assembly.
What is the thermal resistance from junction to ambient for the SMCJ6.5CA/57T?
The typical junction-to-ambient thermal resistance (RθJA) of the SMCJ6.5CA/57T is 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per datasheet Fig. 2. This value assumes standard PCB layout; actual thermal performance improves with larger copper areas or internal ground planes.
How does the SMCJ6.5CA/57T differ from the uni-directional SMCJ6.5A variant?
The SMCJ6.5CA/57T is bi-directional with symmetrical breakdown and clamping in both polarities, while the SMCJ6.5A is uni-directional with a cathode band and conducts only in reverse bias. The SMCJ6.5CA/57T has identical VWM (6.5 V) and PPPM (1500 W) but lacks IFSM rating - as bi-directional operation precludes defined forward surge specification.
SMCJ6.5CA/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ6.5CA/57T FAQ
1.How can I place an order for SMCJ6.5CA/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5CA/57T 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 SMCJ6.5CA/57T reliable?
The price and inventory of SMCJ6.5CA/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5CA/57T is usually 5 days.
3.What payment methods are accepted for SMCJ6.5CA/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5CA/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5CA/57T?
SMCJ6.5CA/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5CA/57T 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 SMCJ6.5CA/57T?
For technical support, including SMCJ6.5CA/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5CA/57T requirements.
6.How does Aetrix verify that SMCJ6.5CA/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5CA/57T 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 SMCJ6.5CA/57T meets industry standards.
7.What is the process for return or replacement of SMCJ6.5CA/57T?
All SMCJ6.5CA/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5CA/57T, 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 SMCJ6.5CA/57T part is unused and in its original packaging.
Return procedure for SMCJ6.5CA/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5CA/57T Tags
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