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Vishay General Semiconductor - Diodes Division SMCJ6.5AHE3/57T
- Part No.:
- SMCJ6.5AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ6.5AHE3/57T.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,218
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Product details
Overview
SMCJ6.5AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. 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 (PPPM), and 133.9 A peak pulse current (IPPM) under 10/1000 µs waveform - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ6.5AHE3/57T datasheet, SMCJ6.5AHE3/57T pinout, SMCJ6.5AHE3/57T application, or SMCJ6.5AHE3/57T equivalent, key selection criteria include clamping voltage (VC = 11.2 V), low incremental surge resistance, AEC-Q101 qualification, and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and stable breakdown behavior. Its thermal resistance (RθJA = 75 °C/W) and junction temperature range (−55 °C to +150 °C) support operation in high-reliability automotive and industrial environments without forced cooling.
The device complies with ANSI/IEEE C62.35 for transient suppression and meets UL 497B recognition (QVGQ2). Polarity is marked by a cathode band; it delivers 11.2 V clamping at 133.9 A IPPM and exhibits a +0.061 %/°C VBR temperature coefficient - enabling predictable performance across temperature gradients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 7.22 V / 7.98 V at IT = 10 mA - ensures reliable turn-on within defined tolerance band |
| VC @ IPPM | 11.2 V at IPPM = 133.9 A - defines worst-case clamped voltage seen by protected circuitry |
| PPPM | 1500 W - peak transient energy absorption capability under standardized 10/1000 µs waveform |
| ID @ VWM | 500 µA - low leakage ensures minimal standby power loss in always-on systems |
| TJ max | +150 °C - supports under-hood automotive use and high-ambient industrial control cabinets |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint |
Pinout & Package
SMCJ6.5AHE3/57T uses the SMC (DO-214AB) package: a rectangular surface-mount case with matte tin-plated leads, compliant with J-STD-002 solderability and JESD 22-B102 whisker testing. The cathode is marked by a visible band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping only |
| Cathode | Current exit terminal during reverse-biased clamping | Marked by band; connects to higher-potential rail (e.g., VBUS or signal line) to shunt transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47 |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream ICs during surge events |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without moisture sensitivity concerns |
| Glass passivated junction | Improves long-term stability and reduces parameter drift under thermal cycling |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal-line protection |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protects microcontroller I/O and LIN bus pins from load-dump and ISO 7637-2 pulse 5a transients in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN transceiver pin and chassis ground to clamp negative-going spikes. Use Value: Limits clamped voltage to 11.2 V, staying below the 13.2 V absolute maximum rating of common LIN transceivers like TJA1021. | Use Scenario: Shields CANH/CANL differential pair from ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Dual SMCJ6.5AHE3/57T devices used in line-to-ground configuration on each bus wire. Use Value: Withstands 1500 W surges while maintaining <12 V clamping - preserving CAN physical layer integrity per ISO 11898-2. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
Use Scenario: Suppresses back-EMF spikes from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Mounted across motor terminals to divert inductive kickback away from H-bridge MOSFETs. Use Value: 133.9 A IPPM rating handles typical 100–150 A motor turn-off currents, preventing MOSFET avalanche failure. | Use Scenario: Guards AC/DC adapter input stage against lightning-induced surges on PoE-powered network switches. IC Role / Device Role / Timing Role: First-stage clamping device on primary-side rectified DC bus before bulk capacitor. Use Value: 11.2 V clamping prevents overvoltage damage to secondary-side controllers during 1.2/50 µs line surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A-E3/61 | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR range | Not suitable for 1500 W surge events; limited to low-energy ESD or board-level coupling | Select when space-constrained and surge energy ≤400 W; verify RθJA = 110 °C/W derating |
| 1.5KE6.8A | Through-hole TO-204AA (DO-41), 1500 W PPPM, VWM = 6.8 V, VC = 10.5 V | Requires PCB through-hole layout; not compatible with automated SMT lines | Choose for legacy designs or prototyping where rework flexibility outweighs production efficiency |
Compared with SMAJ6.5A-E3/61 and 1.5KE6.8A, SMCJ6.5AHE3/57T uniquely combines AEC-Q101 qualification, SMT-compatible SMC packaging, and full 1500 W surge handling - making it the preferred choice for volume automotive and industrial SMT production where reliability and process compatibility are jointly critical.
Availability
SMCJ6.5AHE3/57T is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN networks, and consumer appliance motor drives requiring stable component supply and AEC-Q101-compliant transient protection.
Supply support for SMCJ6.5AHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability and application-specific validation.
The SMCJ series was developed specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - prioritizing robust clamping, AEC-Q101 compliance, and SMT manufacturability.
FAQ
What is the clamping voltage of SMCJ6.5AHE3/57T at its rated peak pulse current?
The SMCJ6.5AHE3/57T has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current (IPPM) of 133.9 A under the standard 10/1000 µs waveform. This value is measured at the device's terminals with specified mounting conditions (0.31" × 0.31" copper pads), and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ6.5AHE3/57T maintains this clamping performance across its operational temperature range.
Is SMCJ6.5AHE3/57T qualified for automotive applications?
Yes, SMCJ6.5AHE3/57T is AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD47, confirming suitability for automotive powertrain, body, and infotainment systems. The SMCJ6.5AHE3/57T is explicitly listed in Vishay's AEC-Q101 documentation for the SMCJ family, and carries UL 497B recognition for safety-critical signal-line protection.
What is the thermal resistance of SMCJ6.5AHE3/57T, and how does it affect PCB layout?
The SMCJ6.5AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes no additional heatsinking; reducing pad area or omitting thermal vias increases RθJA and risks exceeding the +150 °C maximum junction temperature during repeated surges. For reliable operation, maintain minimum pad dimensions and consider thermal vias under the cathode/anode lands. The SMCJ6.5AHE3/57T datasheet specifies these layout requirements explicitly.
Can SMCJ6.5AHE3/57T be used in bidirectional configurations?
No, SMCJ6.5AHE3/57T is a unidirectional TVS diode, as confirmed by its "A" suffix and cathode band marking. Bidirectional variants carry the "CA" suffix (e.g., SMCJ6.5CA). Using SMCJ6.5AHE3/57T in a bidirectional application would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. For symmetrical surge protection, select SMCJ6.5CAHE3/57T or equivalent - the SMCJ6.5AHE3/57T must be oriented with cathode toward the higher-potential rail.
What is the maximum leakage current of SMCJ6.5AHE3/57T at its stand-off voltage?
The SMCJ6.5AHE3/57T exhibits a maximum reverse leakage current (ID) of 500 µA at its stand-off voltage (VWM) of 6.5 V and TA = 25 °C. This low leakage ensures minimal power loss in always-on circuits such as automotive wake-up lines or battery-backed sensors. Leakage remains within specification up to +125 °C, though it increases exponentially near TJ max; design margin should account for worst-case ID growth in high-temperature environments. The SMCJ6.5AHE3/57T datasheet confirms this value in Table 1 under Electrical Characteristics.
SMCJ6.5AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ6.5AHE3/57T FAQ
1.How can I place an order for SMCJ6.5AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ6.5AHE3/57T 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 SMCJ6.5AHE3/57T reliable?
The price and inventory of SMCJ6.5AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ6.5AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ6.5AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ6.5AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ6.5AHE3/57T?
SMCJ6.5AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ6.5AHE3/57T 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 SMCJ6.5AHE3/57T?
For technical support, including SMCJ6.5AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ6.5AHE3/57T requirements.
6.How does Aetrix verify that SMCJ6.5AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ6.5AHE3/57T 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 SMCJ6.5AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ6.5AHE3/57T?
All SMCJ6.5AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ6.5AHE3/57T, 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 SMCJ6.5AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ6.5AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ6.5AHE3/57T Tags
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