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Vishay General Semiconductor - Diodes Division SM6T7V5CAHE3/5B
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- Part No.:
- SM6T7V5CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T7V5CAHE3/5B.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,596
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Product details
Overview
SM6T7V5CAHE3/5B 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 7.13 V minimum breakdown voltage (VBR), 11.3 V maximum clamping voltage (VC) at 53.0 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SM6T7V5CAHE3/5B datasheet, SM6T7V5CAHE3/5B pinout, SM6T7V5CAHE3/5B application, or SM6T7V5CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.59), RoHS-compliant & halogen-free construction, and compatibility with automated SMT placement on PCBs requiring IEC 61000-4-2/4-5 level protection.
Technical Context
This TVS operates symmetrically in both directions due to its CA suffix designation, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<500 μA at 6.40 V stand-off), while the SMB package delivers low parasitic inductance critical for fast transient response.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Fig. 2; thermal resistance is 100 °C/W junction-to-ambient (on 5.0 mm × 5.0 mm copper pads) and 20 °C/W junction-to-lead, supporting reliable operation in compact, thermally constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA test current - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 6.40 V - maximum continuous reverse stand-off voltage before leakage exceeds 500 μA |
| VC @ IPPM | 11.3 V at 53.0 A (10/1000 μs) - actual clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak pulse power handling capacity under standardized 10/1000 μs waveform |
| TJ max. | +150 °C - enables deployment in under-hood automotive environments and industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with IPC-7351B standard, 0.220" × 0.130" body size |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A (symmetrical) | One side of bidirectional PN junction - interchangeable with Cathode for AC protection |
| Cathode | Terminal B (symmetrical) | Other side of bidirectional PN junction - electrically identical to Anode; no band marking |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential buses (e.g., RS-485, CAN FD) without polarity constraints |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) when properly laid out |
| Low clamping voltage (11.3 V) | Keeps protected ICs (e.g., microcontrollers, transceivers) safely below absolute maximum ratings during transients |
| AEC-Q101 qualification | Validated for automotive powertrain, body electronics, and ADAS modules requiring zero-defect reliability |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - eliminates bake requirements prior to reflow soldering |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensor signal lines from load dump and ISO 7637-2 pulses in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair to clamp ±200 V transients without distorting analog signal integrity. Use Value: Prevents latch-up or gate oxide damage in downstream signal conditioning amplifiers and ADCs operating at 3.3 V or 5 V. | Use Scenario: Safeguarding RS-485 transceivers (e.g., SN65HVD230) in factory automation PLCs exposed to motor switching noise. IC Role / Device Role / Timing Role: Low-inductance clamping element between A/B bus lines and ground, suppressing common-mode surges up to 600 W. Use Value: Maintains data integrity over 1200 m cable runs by limiting bus voltage excursion to <12 V during 10/1000 μs transients. |
| Consumer USB Port ESD | Telecom DSL Line Protection |
Use Scenario: ESD protection for USB 2.0 D+/D− lines in set-top boxes subjected to ±8 kV contact discharge (IEC 61000-4-2). IC Role / Device Role / Timing Role: Fast-response bidirectional suppressor placed adjacent to connector to shunt ESD current before reaching PHY IC. Use Value: Achieves sub-nanosecond response time and clamps transients to <12 V, preserving signal rise/fall times <1 ns. | Use Scenario: Primary surge protection on POTS/DSL line cards in central office equipment facing lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protector across tip/ring lines, coordinated with gas discharge tube (GDT) secondary stage. Use Value: Handles 600 W peak power while maintaining low capacitance (<100 pF), preventing high-frequency signal attenuation on 2.2 MHz ADSL2+ channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA | Same SMB package, 7.5 V nominal VBR, but only 400 W PPPM; non-AEC-Q101 rated | Limited to commercial-grade consumer/industrial use; not qualified for automotive under-hood deployment | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin is unnecessary |
| 1.5KE7.5CA | DO-201 package (axial lead), 7.5 V VBR, 1500 W PPPM, higher VC (12.9 V), no AEC-Q101 | Through-hole mounting only; unsuitable for high-density SMT designs; larger board footprint required | Choose only for legacy through-hole systems where PCB rework is prohibitive and higher clamping voltage is acceptable |
Compared with SMAJ7.5CA and 1.5KE7.5CA, SM6T7V5CAHE3/5B uniquely combines AEC-Q101 qualification, 600 W surge rating, and SMB SMT compatibility-making it the optimal choice for new automotive and space-constrained industrial designs requiring validated reliability and high-power transient immunity.
Availability
SM6T7V5CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, consumer USB protection, and telecom line card designs requiring stable component supply across multi-year production cycles.
Supply support for SM6T7V5CAHE3/5B 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 high-reliability, high-efficiency solutions.
The SM6T Series is engineered specifically for robust transient voltage suppression in automotive, industrial, and communications infrastructure-delivering consistent clamping performance, AEC-Q101 validation, and optimized SMT manufacturability.
FAQ
What does the "CA" suffix indicate in SM6T7V5CAHE3/5B?
The "CA" suffix in SM6T7V5CAHE3/5B denotes a bidirectional configuration, meaning the device functions identically in both forward and reverse bias directions. This allows it to protect AC-coupled or differential signal lines-such as RS-485, CAN, or USB D+/D−-without requiring polarity-aware layout. Unlike unidirectional variants (e.g., SM6T7V5A), SM6T7V5CAHE3/5B has no cathode band marking and exhibits matched VBR and VC characteristics in either direction.
Is SM6T7V5CAHE3/5B suitable for automotive applications?
Yes, SM6T7V5CAHE3/5B is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which designates RoHS-compliant and automotive-grade qualification. It meets rigorous stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness required for engine control units, body electronics, and ADAS modules. Its 150 °C maximum junction temperature further supports under-hood deployment.
What is the clamping voltage of SM6T7V5CAHE3/5B under a 10/1000 μs surge?
The maximum clamping voltage (VC) of SM6T7V5CAHE3/5B under a 10/1000 μs waveform is 11.3 V at a peak pulse current (IPPM) of 53.0 A. This value is measured per Figure 1 in Vishay document 88385 and represents the upper limit of voltage imposed on the protected circuit during worst-case surge events-ensuring downstream 3.3 V or 5 V ICs remain within safe operating limits.
How does the SMB (DO-214AA) package of SM6T7V5CAHE3/5B compare to SMA (DO-214AC)?
The SMB package used in SM6T7V5CAHE3/5B measures 0.220" × 0.130" (5.59 mm × 3.30 mm), larger than the SMA (DO-214AC) at 0.205" × 0.120" (5.21 mm × 3.05 mm). This increased pad area improves thermal dissipation-RθJA is 100 °C/W vs. ~120 °C/W for SMA-and supports higher surge energy handling. The SMB also provides greater mechanical robustness for automated placement and reflow processes.
Does SM6T7V5CAHE3/5B require special PCB layout considerations?
Yes, effective transient suppression with SM6T7V5CAHE3/5B requires short, wide traces to minimize inductance between the device and protected node. Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W performance. Avoid vias or narrow necks near terminals; place SM6T7V5CAHE3/5B as close as possible to the connector or IC input to reduce loop inductance and ensure clamping occurs before transient energy reaches sensitive circuitry.
SM6T7V5CAHE3/5B 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 53A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T7V5CAHE3/5B FAQ
1.How can I place an order for SM6T7V5CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T7V5CAHE3/5B 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 SM6T7V5CAHE3/5B reliable?
The price and inventory of SM6T7V5CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T7V5CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T7V5CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T7V5CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T7V5CAHE3/5B?
SM6T7V5CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T7V5CAHE3/5B 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 SM6T7V5CAHE3/5B?
For technical support, including SM6T7V5CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T7V5CAHE3/5B requirements.
6.How does Aetrix verify that SM6T7V5CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T7V5CAHE3/5B 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 SM6T7V5CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T7V5CAHE3/5B?
All SM6T7V5CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T7V5CAHE3/5B, 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 SM6T7V5CAHE3/5B part is unused and in its original packaging.
Return procedure for SM6T7V5CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T7V5CAHE3/5B Tags
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