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Vishay General Semiconductor - Diodes Division SM6T6V8CA-E3/52
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- Part No.:
- SM6T6V8CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T6V8CA-E3/52.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,598
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Product details
Overview
SM6T6V8CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features a 6.8 V breakdown voltage (VBR), 10.5 V maximum clamping voltage (VC) at 57 A peak pulse current, 600 W peak pulse power (10/1000 μs), and operates across -65 °C to +150 °C junction temperature. It is widely used for protecting sensor signal lines in automotive ECUs.
For engineers reviewing the SM6T6V8CA-E3/52 datasheet, SM6T6V8CA-E3/52 pinout, SM6T6V8CA-E3/52 application, or SM6T6V8CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under 600 W surge, SMB footprint compatibility, AEC-Q101 qualification status, and compliance with IEC 61000-4-2/4-5 standards for system-level ESD and surge immunity.
Technical Context
The SM6T6V8CA-E3/52 implements a symmetric silicon avalanche junction structure enabling identical clamping behavior in both polarities. Its 6.8 V nominal breakdown voltage is specified at 10 mA test current, with a 5.80 V stand-off voltage (VWM) ensuring reliable blocking during normal operation.
It delivers 10.5 V clamping voltage at 57 A peak pulse current (10/1000 μs waveform), achieving <1.9× VBR clamping ratio - critical for safeguarding 5 V logic interfaces. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads, supporting sustained 5.0 W power dissipation at 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - ensures predictable avalanche initiation within tight tolerance for robust overvoltage thresholding |
| VWM | 5.80 V - maximum reverse working voltage before leakage exceeds 1000 μA, compatible with 5 V rail systems |
| VC @ IPPM | 10.5 V at 57 A (10/1000 μs) - limits transient overshoot to safe levels for downstream 5 V ICs and MOSFET gates |
| PPPM | 600 W - sustains high-energy surges from inductive switching or lightning-induced coupling without failure |
| Junction Temp Range | -65 °C to +150 °C - supports operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - surface-mount footprint with 2.2 mm × 3.94 mm body, optimized for automated placement and thermal relief |
Pinout & Package
SM6T6V8CA-E3/52 uses an SMB (DO-214AA) package with two terminals: anode and cathode. As a bidirectional device, it has no polarity marking; both terminals are functionally symmetric and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive polarity) | Accepts positive-going surge; forms one side of symmetrical avalanche path |
| Cathode | Transient current entry (negative polarity) | Accepts negative-going surge; completes bidirectional clamping path with anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions enables single-device protection of AC-coupled or floating signal lines |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) without degradation when mounted per recommended pad layout |
| Low clamping voltage | 10.5 V clamping at 57 A ensures protected ICs see less than 2× supply voltage during worst-case transients |
| AEC-Q101 qualified option | E3 suffix indicates commercial grade; HE3 suffix variants are AEC-Q101 qualified for automotive use - this part is RoHS-compliant E3 grade |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Lines |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤10.5 V, preventing ADC saturation and latch-up in 5 V microcontrollers during 100 V/50 ms load dump events. | Use Scenario: Guarding CAN_H/CAN_L differential pair against ESD and coupled surges in factory automation gateways. IC Role / Device Role / Timing Role: Paired SM6T6V8CA-E3/52 devices (one per line) referenced to ground, providing common-mode surge suppression. Use Value: Maintains CAN signal integrity by clamping fast transients below ISO 11898-2 common-mode immunity thresholds (±40 V) without distorting data timing. |
| Consumer USB Interface Protection | Telecom Power Supply Input |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable docking stations against contact ESD per IEC 61000-4-2 ±8 kV. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with data lines, grounded via shortest possible trace. Use Value: Clamps ESD strikes to <11 V within nanoseconds, preserving signal rise/fall times (<1 ns added delay) and meeting USB 2.0 eye diagram requirements. | Use Scenario: Secondary-side transient suppression on 5 V/12 V telecom power rails feeding FPGA and PHY ICs. IC Role / Device Role / Timing Role: Parallel-connected TVS across power rail and ground, absorbing coupled lightning surges from upstream DC/DC converters. Use Value: Absorbs 600 W surge energy without fuse blowing or rail collapse, maintaining uninterrupted operation during GR-1089-CORE Level 3 (2 kV ring wave) events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8CA | Same SMB package, 600 W rating, but higher VC = 11.5 V at 52 A; slightly wider VBR tolerance (6.45–7.65 V) | Marginally lower clamping performance; suitable where 1 V higher clamping is acceptable | Select SMAJ6.8CA if legacy design validation already covers its higher clamping voltage and broader VBR range |
| P6SMB6.8CA | Identical electrical specs and SMB footprint; manufactured by ON Semiconductor; same 10.5 V VC, 6.45–7.14 V VBR | No functional difference; dual-sourcing option with identical layout and performance | Choose P6SMB6.8CA for supply chain diversification without redesign or requalification |
Compared with SM6T6V8CA-E3/52, SMAJ6.8CA offers marginally relaxed clamping but broader VBR tolerance, while P6SMB6.8CA provides exact electrical and mechanical equivalence - making it ideal for second-source assurance without layout or firmware changes.
Availability
SM6T6V8CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, consumer USB ports, and telecom power rails requiring stable component supply and RoHS-compliant packaging.
Supply support for SM6T6V8CA-E3/52 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 automotive-grade qualification.
The SM6T Series is engineered specifically for board-level transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where high pulse power, low clamping, and AEC-Q101 readiness are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T6V8CA-E3/52?
The "CA" suffix in SM6T6V8CA-E3/52 explicitly denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM6T6V8A), SM6T6V8CA-E3/52 has no polarity marking and functions identically regardless of voltage polarity applied across its terminals. This makes SM6T6V8CA-E3/52 ideal for protecting AC-coupled signals, differential buses like CAN or RS-485, and floating sensor outputs where polarity reversal may occur.
Is SM6T6V8CA-E3/52 AEC-Q101 qualified?
No, SM6T6V8CA-E3/52 is not AEC-Q101 qualified. The "E3" suffix indicates RoHS-compliant, commercial-grade construction. For automotive-qualified versions, Vishay offers SM6T6V8CAHE3 variants (e.g., SM6T6V8CAHE3_A), which carry the "HE3" suffix and undergo full AEC-Q101 stress testing. SM6T6V8CA-E3/52 remains suitable for industrial, consumer, and telecom applications where AEC-Q101 is not mandated, but designers requiring automotive qualification must specify the HE3 or HM3 variant explicitly.
What is the maximum clamping voltage of SM6T6V8CA-E3/52 and under what test condition?
The maximum clamping voltage of SM6T6V8CA-E3/52 is 10.5 V, measured at a peak pulse current (IPPM) of 57 A using the standardized 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (-65 °C to +150 °C) and reflects worst-case clamping performance when the device is mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout. It ensures protected circuits remain below critical overvoltage thresholds during surge events.
Can SM6T6V8CA-E3/52 be used in place of a unidirectional TVS like SM6T6V8A?
SM6T6V8CA-E3/52 should not be substituted for SM6T6V8A without circuit review, because they differ fundamentally in polarity behavior: SM6T6V8CA-E3/52 is bidirectional with no cathode marking, while SM6T6V8A is unidirectional and requires correct orientation relative to DC bias. Using SM6T6V8CA-E3/52 in a unidirectionally biased rail may result in unintended conduction during normal operation. SM6T6V8CA-E3/52 is only appropriate where true bidirectional protection is required - such as across differential pairs or AC-coupled lines - not as a drop-in replacement for unidirectional designs.
What PCB pad layout is recommended for optimal thermal and surge performance of SM6T6V8CA-E3/52?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area for each terminal of SM6T6V8CA-E3/52 to achieve rated 600 W pulse power and 5.0 W steady-state dissipation. The recommended mounting pad layout includes 0.086" (2.18 mm) minimum pad width and 0.220" (5.59 mm) reference length. Use of thermal reliefs or undersized pads reduces surge handling capability and risks solder joint failure during repetitive transients. For automotive applications, IPC-7351B SMB footprint (DO-214AA) with full copper pour is strongly advised.
SM6T6V8CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T6V8CA-E3/52 FAQ
1.How can I place an order for SM6T6V8CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T6V8CA-E3/52 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 SM6T6V8CA-E3/52 reliable?
The price and inventory of SM6T6V8CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T6V8CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T6V8CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T6V8CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T6V8CA-E3/52?
SM6T6V8CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T6V8CA-E3/52 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 SM6T6V8CA-E3/52?
For technical support, including SM6T6V8CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T6V8CA-E3/52 requirements.
6.How does Aetrix verify that SM6T6V8CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T6V8CA-E3/52 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 SM6T6V8CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T6V8CA-E3/52?
All SM6T6V8CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T6V8CA-E3/52, 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 SM6T6V8CA-E3/52 part is unused and in its original packaging.
Return procedure for SM6T6V8CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T6V8CA-E3/52 Tags
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