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Vishay General Semiconductor - Diodes Division SM6T7V5CAHM3_A/I
- Part No.:
- SM6T7V5CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T7V5CAHM3_A/I.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,890
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Product details
Overview
SM6T7V5CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 7.13 V minimum breakdown voltage (VBR), 6.40 V stand-off voltage (VWM), 11.3 V maximum clamping voltage at 53.0 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects signal lines in automotive sensor units against ESD and inductive switching transients.
For engineers reviewing the SM6T7V5CAHM3_A/I datasheet, SM6T7V5CAHM3_A/I pinout, SM6T7V5CAHM3_A/I application, or SM6T7V5CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping voltage under rated surge current, and SMB package compatibility with automated SMT placement.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance across positive and negative transients without polarity marking. Its glass-passivated junction ensures stable leakage (<500 μA at VWM) and robust surge handling up to 150 °C junction temperature.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and supports reflow soldering at 260 °C peak. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 7.13 V - Ensures reliable triggering above normal operating voltage of 6.40 V circuits |
| VWM | 6.40 V - Maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 11.3 V at 53.0 A - Clamps 10/1000 μs surges to safe levels for downstream ICs |
| PPPM | 600 W - Withstands high-energy transients common in automotive load-dump and ISO 7637-2 events |
| TJ max | +150 °C - Supports under-hood automotive environments without derating |
| Package | SMB (DO-214AA) - Standard surface-mount footprint with 2.2 mm height for space-constrained PCBs |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), molded 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 / Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in either direction; no cathode band marking required |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides thermal path to PCB copper pads per JEDEC layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 600 W peak pulse power | Meets ISO 16750-2 and ISO 7637-2 Pulse 1/2/5a immunity requirements for automotive electronics |
| Halogen-free & RoHS-compliant | Complies with EU Directive 2011/65/EU and IPC-1752A material declaration standards |
| Low clamping ratio (VC/VBR ≈ 1.59) | Minimizes overvoltage stress on protected ICs during fast-rising transients |
| MSL Level 1 | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching PHY layer. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V sensor signal chains while maintaining signal integrity below 11.3 V clamping threshold. | Use Scenario: Safeguarding differential CAN_H/CAN_L lines in factory automation gateways subject to ESD (±8 kV contact) and burst noise. IC Role / Device Role / Timing Role: Low-capacitance TVS pair (one per line) suppressing common-mode surges without distorting 1 Mbps CAN signaling. Use Value: Maintains bus timing margins by limiting transient-induced jitter through sub-12 V clamping and <100 pF junction capacitance at zero bias. |
| Consumer USB Port Protection | Telecom Power Supply Input |
Use Scenario: Securing USB 2.0 D+/D− lines in portable medical devices against accidental ESD discharge during cable insertion. IC Role / Device Role / Timing Role: Bidirectional TVS mounted adjacent to USB connector to absorb ±15 kV air/±8 kV contact discharge per IEC 61000-4-2. Use Value: Preserves high-speed data eye diagram integrity by clamping within 1 ns while adding <0.5 pF parasitic capacitance per line. | Use Scenario: Front-end surge suppression on 12 V DC input rails of VoIP phones and base stations subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device upstream of DC/DC converter, sized to handle 10/1000 μs 600 W pulses per IEC 61000-4-5. Use Value: Limits input rail overshoot to ≤11.3 V during 50 A surge events, preventing overvoltage shutdown of PMICs and LDOs. |
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 VBR range (6.8–7.5 V), but lower PPPM = 400 W and higher VC = 12.0 V at 33.3 A | Not AEC-Q101 qualified; limited to commercial-grade industrial use | Choose when cost sensitivity outweighs automotive qualification and higher surge margin |
| 1.5KE7.5CA | Higher PPPM = 1500 W but axial DO-15 package; VC = 12.0 V at 125 A; no SMT compatibility | Requires through-hole assembly; unsuitable for high-density PCBs or automated production | Choose only for legacy through-hole designs needing higher energy absorption |
Compared with SMAJ7.5CA and 1.5KE7.5CA, SM6T7V5CAHM3_A/I delivers automotive-grade reliability in an SMT-optimized SMB package with superior clamping efficiency (11.3 V vs. ≥12.0 V) and full halogen-free compliance-critical for modern automotive and medical OEM programs.
Availability
SM6T7V5CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, consumer USB port protection, and telecom power supply input requiring stable component supply across production lifecycles.
Supply support for SM6T7V5CAHM3_A/I 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 and automotive-grade solutions.
The SM6T Series is designed specifically for robust transient voltage suppression in harsh environments, targeting AEC-Q101-compliant automotive electronics and industrial systems demanding repeatable clamping performance under repetitive surge stress.
FAQ
What is the clamping voltage of SM6T7V5CAHM3_A/I at its rated peak pulse current?
The SM6T7V5CAHM3_A/I has a maximum clamping voltage (VC) of 11.3 V at 53.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88385 and reflects worst-case clamping performance at TA = 25 °C with recommended PCB pad layout. The SM6T7V5CAHM3_A/I maintains this clamping level across bidirectional transients due to its symmetrical junction design.
Is SM6T7V5CAHM3_A/I qualified for automotive applications?
Yes, SM6T7V5CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's SM6T series datasheet (Rev. 09-Jan-2024, Doc. #88385). The "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, making SM6T7V5CAHM3_A/I suitable for under-hood and chassis-mounted automotive ECUs.
What does the "CA" suffix indicate in SM6T7V5CAHM3_A/I?
The "CA" suffix in SM6T7V5CAHM3_A/I explicitly identifies it as a bidirectional transient voltage suppressor. Unlike unidirectional variants (e.g., SM6T7V5A), the CA version provides symmetrical clamping in both forward and reverse directions, with identical VBR, VWM, and VC specifications for either polarity. No cathode band marking is present on the SMB package, confirming its bidirectional functionality.
What is the thermal resistance of SM6T7V5CAHM3_A/I, and how does it affect PCB layout?
The SM6T7V5CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W, per Vishay datasheet 88385. These values assume mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To achieve rated power dissipation, PCB layout must replicate this pad area and avoid excessive trace length between device terminals and thermal planes. The SM6T7V5CAHM3_A/I does not require external heatsinking under typical surge duty cycles.
How does SM6T7V5CAHM3_A/I compare to unidirectional SM6T7V5AHM3_A/I in circuit implementation?
SM6T7V5CAHM3_A/I replaces two unidirectional TVS diodes in back-to-back configuration with a single bidirectional device, simplifying layout and reducing BOM count. While both share identical VBR (7.13–7.88 V) and VC (11.3 V) specs, the CA version eliminates polarity orientation concerns and enables direct placement on AC-coupled or differential lines. The SM6T7V5CAHM3_A/I is functionally equivalent to SM6T7V5AHM3_A/I used in antiparallel, but with guaranteed matched parameters and tighter tolerance stacking.
SM6T7V5CAHM3_A/I 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:
- Obsolete
- 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 (SMB)
SM6T7V5CAHM3_A/I FAQ
1.How can I place an order for SM6T7V5CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T7V5CAHM3_A/I 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 SM6T7V5CAHM3_A/I reliable?
The price and inventory of SM6T7V5CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T7V5CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T7V5CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T7V5CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T7V5CAHM3_A/I?
SM6T7V5CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T7V5CAHM3_A/I 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 SM6T7V5CAHM3_A/I?
For technical support, including SM6T7V5CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T7V5CAHM3_A/I requirements.
6.How does Aetrix verify that SM6T7V5CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T7V5CAHM3_A/I 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 SM6T7V5CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T7V5CAHM3_A/I?
All SM6T7V5CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T7V5CAHM3_A/I, 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 SM6T7V5CAHM3_A/I part is unused and in its original packaging.
Return procedure for SM6T7V5CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T7V5CAHM3_A/I Tags
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