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Vishay General Semiconductor - Diodes Division SM6T100CAHE3_A/I
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- Part No.:
- SM6T100CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CAHE3_A/I.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,790
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Product details
Overview
SM6T100CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 100 V standoff voltage (VWM), 137 V clamping voltage (VC) at 4.4 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It provides robust ESD and surge protection for automotive sensor signal lines, industrial I/O interfaces, and power supply rails.
For engineers reviewing the SM6T100CAHE3_A/I datasheet, SM6T100CAHE3_A/I pinout, SM6T100CAHE3_A/I application, or SM6T100CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (1.37×VWM), thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
The SM6T100CAHE3_A/I operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±137 V in both polarities. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 μA at 85.5 V), while its low-inductance SMB package supports fast response to sub-microsecond transients.
Designed for automotive-grade reliability, it meets AEC-Q101 stress test requirements and is qualified for operation from –65 °C to +150 °C junction temperature. The device is not intended for continuous forward conduction - it lacks IFSM rating due to bidirectional construction and is strictly for transient suppression only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - maximum reverse stand-off voltage before clamping begins; defines safe operating margin below system rail |
| VBR (min/max) | 95.0 V / 105 V - breakdown occurs within this range at 1 mA; ensures predictable turn-on threshold |
| VC @ IPPM | 137 V at 4.4 A (10/1000 μs) - peak clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 600 W - peak transient energy handling capacity under standardized 10/1000 μs waveform |
| ID @ VWM | <1 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max. | +150 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, compatible with lead-free reflow per J-STD-020 (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode side marking) | Transient current sink (bidirectional) | No polarity marking; terminals are symmetrical - either end serves as cathode or anode depending on transient polarity |
| Anode (Cathode side marking) | Transient current sink (bidirectional) | Identical electrical role to opposite terminal; bidirectional operation eliminates orientation dependency during placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules, ADAS sensors, and body electronics |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 4 surges without degradation |
| Low clamping ratio (VC/VWM = 1.37) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage performance across temperature and life cycles |
| MSL Level 1, 260 °C peak | Enables single-pass lead-free reflow without moisture-related popcorning or delamination |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADC front-ends during 12 V/24 V system transients up to ±137 V. | Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to field wiring surges in factory automation systems. IC Role / Device Role / Timing Role: Transient suppressor mounted adjacent to terminal block to absorb induced lightning-induced surges and relay coil flyback energy. Use Value: Maintains functional safety integrity by limiting transient overvoltage to <137 V, well below the 200 V isolation rating of typical optocoupler-based I/O stages. |
| Telecom Power Rail Clamping | Consumer Device USB Port Protection |
Use Scenario: Clamping 48 V DC power feed lines in PoE-powered network equipment against EFT and surge events per IEC 61000-4-4/5. IC Role / Device Role / Timing Role: Primary TVS element placed between DC input and DC-DC converter input capacitor to limit upstream surge propagation. Use Value: Enables compliance with EN 61000-6-2 immunity requirements while maintaining ≤5.0 W steady-state power dissipation at full load. | Use Scenario: Protecting USB 2.0 data lines and VBUS in smart home hubs and set-top boxes from ESD events (>8 kV contact) and hot-swap transients. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated into USB connector flex circuit to minimize signal distortion. Use Value: Delivers <1 μA leakage at 85.5 V, preserving battery life in always-on consumer devices without compromising ESD robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100CA | Same VWM (85.5 V), lower PPPM (400 W), higher VC (137 V same), SMA package (larger RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W margin is required | Select SMAJ100CA only if board space allows larger SMA footprint and thermal budget permits higher junction rise |
| 1.5KE100CA | Higher PPPM (1500 W), axial-leaded DO-201 package, no AEC-Q101 qualification, higher parasitic inductance | Not suitable for automated SMT assembly or high-frequency surge suppression; requires through-hole mounting | Choose 1.5KE100CA only for prototyping or legacy through-hole designs where reflow compatibility is not required |
Compared with SMAJ100CA and 1.5KE100CA, the SM6T100CAHE3_A/I uniquely combines AEC-Q101 qualification, 600 W surge rating, SMB SMT compatibility, and bidirectional symmetry - making it the preferred choice for production automotive and industrial SMT designs requiring validated reliability and compact layout.
Availability
SM6T100CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O protection, and telecom power rail clamping requiring stable component supply, AEC-Q101 compliance, and consistent SMB package form factor.
Supply support for SM6T100CAHE3_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 reliability, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against ESD, EFT, and surge events is mission-critical.
FAQ
What does the "CA" suffix indicate in SM6T100CAHE3_A/I?
The "CA" suffix in SM6T100CAHE3_A/I denotes a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., SM6T100A), SM6T100CAHE3_A/I has no cathode marking and functions identically regardless of terminal orientation - essential for protecting AC-coupled or differential signal lines where polarity is undefined.
Is SM6T100CAHE3_A/I qualified for automotive use?
Yes, SM6T100CAHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision 09-Jan-2024 (Document Number: 88385). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics.
What is the clamping voltage of SM6T100CAHE3_A/I at rated peak pulse current?
The clamping voltage (VC) of SM6T100CAHE3_A/I is 137 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 4.4 A. This value is measured per Figure 1 and Table on page 2 of the official Vishay datasheet (88385), and represents the maximum voltage imposed on the protected circuit during a standardized surge event.
Does SM6T100CAHE3_A/I have a specified forward surge current rating (IFSM)?
No, SM6T100CAHE3_A/I does not specify an IFSM rating because it is a bidirectional TVS diode. Unlike unidirectional types (e.g., SM6T100A), which list IFSM = 100 A for 10 ms half-sine wave, bidirectional devices like SM6T100CAHE3_A/I are not designed for sustained forward conduction and lack a defined anode/cathode polarity for such testing.
What is the thermal resistance of SM6T100CAHE3_A/I, and how does it affect PCB layout?
SM6T100CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under 5.0 W steady-state dissipation, designers must ensure adequate copper area and avoid excessive ambient temperature - confirming layout against Vishay's recommended pad dimensions in Document 88385, page 4.
SM6T100CAHE3_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):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- 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)
SM6T100CAHE3_A/I FAQ
1.How can I place an order for SM6T100CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CAHE3_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 SM6T100CAHE3_A/I reliable?
The price and inventory of SM6T100CAHE3_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 SM6T100CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SM6T100CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CAHE3_A/I?
SM6T100CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CAHE3_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 SM6T100CAHE3_A/I?
For technical support, including SM6T100CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CAHE3_A/I requirements.
6.How does Aetrix verify that SM6T100CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SM6T100CAHE3_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 SM6T100CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SM6T100CAHE3_A/I?
All SM6T100CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CAHE3_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 SM6T100CAHE3_A/I part is unused and in its original packaging.
Return procedure for SM6T100CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CAHE3_A/I Tags
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