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Vishay General Semiconductor - Diodes Division SM6T100CAHE3_B/I
- Part No.:
- SM6T100CAHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CAHE3_B/I.pdf
- Description:
- 600W,100V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,963
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Product details
Overview
SM6T100CAHE3_B/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 and industrial I/O interfaces.
For engineers reviewing the SM6T100CAHE3_B/I datasheet, SM6T100CAHE3_B/I pinout, SM6T100CAHE3_B/I application, or SM6T100CAHE3_B/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, low clamping ratio (1.37×VWM), TJ = -65 °C to +150 °C operating range, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) of 114 V min / 126 V max at 1 mA test current and clamping voltage (VC) of 137 V at 4.4 A IPPM under 10/1000 μs waveform. Its glass-passivated junction ensures stable leakage performance (ID ≤ 1 μA at VWM).
Designed for high-reliability automotive applications, SM6T100CAHE3_B/I meets AEC-Q101 stress testing requirements and features MSL Level 1 moisture sensitivity with 260 °C reflow peak temperature tolerance. Thermal resistance is RθJA = 100 °C/W (typical) on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse standoff voltage before clamping begins |
| VBR (min/max) | 114 V / 126 V at 1 mA - symmetric breakdown threshold in both directions |
| VC @ IPPM | 137 V at 4.4 A (10/1000 μs) - peak clamped voltage protecting downstream circuitry |
| PPPM | 600 W - surge energy handling capability per single transient event |
| TJ Range | -65 °C to +150 °C - extended thermal operation for under-hood automotive use |
| Package | SMB (DO-214AA) - surface-mount footprint compatible with IPC-7351B standard pad layout |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity-unmarked for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive polarity) | One terminal of symmetrical PN junction; conducts during positive transients |
| Cathode | Transient current entry (negative polarity) | Other terminal of symmetrical PN junction; conducts during negative transients |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) when properly mounted |
| AEC-Q101 qualification | Validated for automotive environments including temperature cycling, HTRB, and mechanical shock |
| Low clamping ratio (1.37×VWM) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
| MSL Level 1 | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤137 V, preventing latch-up or gate oxide damage in 3.3 V/5 V ADC front-ends while maintaining signal integrity. | Use Scenario: Guarding CAN_H and CAN_L differential pair against ESD (IEC 61000-4-2 ±25 kV air) and fast transients in factory automation nodes. IC Role / Device Role / Timing Role: Symmetric TVS across differential bus lines, referenced to common-mode ground. Use Value: Clamps common-mode surges without distorting differential signaling due to matched bidirectional VBR and VC characteristics. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Shielding RS-485 transceiver pins on base station backhaul modules from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary surge suppression device located at connector entry point before TVS array or GDT secondary stage. Use Value: Absorbs up to 600 W of transient energy within 1000 μs, reducing need for larger, slower secondary protectors. | Use Scenario: Safeguarding microcontroller GPIOs driving relays and triacs in smart washing machine control boards exposed to motor commutation noise. IC Role / Device Role / Timing Role: Localized clamping element placed directly at relay coil flyback node and triac gate drive path. Use Value: Prevents false triggering and MCU reset events by limiting induced spikes to <140 V with sub-100 ns response time. |
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 (100 V), lower PPPM (400 W), SMA package (larger RθJA = 150 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump | Choose SMAJ100CA only if board space allows larger SMA footprint and surge requirements are ≤400 W |
| 1.5KE100CA | Higher PPPM (1500 W), axial lead DO-201 package, non-SMT, no AEC-Q101 qualification | Requires through-hole assembly; unsuitable for automated production or automotive qualification | Select 1.5KE100CA only for prototyping or legacy through-hole designs where reflow compatibility is not required |
Compared with SMAJ100CA and 1.5KE100CA, SM6T100CAHE3_B/I delivers optimal balance of AEC-Q101 compliance, 600 W surge capacity, and SMB footprint-enabling high-volume automotive SMT manufacturing without derating or secondary qualification.
Availability
SM6T100CAHE3_B/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and telecom line interface requiring stable component supply and full traceability.
Supply support for SM6T100CAHE3_B/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 and automotive-grade qualification.
The SM6T Series is engineered specifically for high-speed transient suppression in harsh environments, targeting AEC-Q101-compliant automotive electronics and industrial systems demanding consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of SM6T100CAHE3_B/I at its rated peak pulse current?
The SM6T100CAHE3_B/I has a maximum clamping voltage (VC) of 137 V when subjected to a 10/1000 μs waveform peak pulse current (IPPM) of 4.4 A. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 88385, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during surge events. The SM6T100CAHE3_B/I maintains this clamping performance across its full operating temperature range.
Is SM6T100CAHE3_B/I qualified for automotive applications?
Yes, SM6T100CAHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the SM6T Series datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock. The SM6T100CAHE3_B/I is intended for under-hood and body-control module applications where reliability under thermal and vibration stress is mandatory.
What does the "CA" suffix indicate in SM6T100CAHE3_B/I?
The "CA" suffix in SM6T100CAHE3_B/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse polarities. Unlike unidirectional variants (e.g., SM6T100A), the SM6T100CAHE3_B/I has no cathode marking and functions identically regardless of voltage polarity-making it ideal for AC signal lines, differential buses like CAN, and floating sensor outputs.
What is the thermal resistance of SM6T100CAHE3_B/I under standard mounting conditions?
The SM6T100CAHE3_B/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, as specified in the Vishay SM6T Series datasheet (Document Number: 88385). This value assumes JEDEC-standard PCB layout and natural convection cooling; actual RθJA may improve with enhanced copper area or forced airflow. The SM6T100CAHE3_B/I also exhibits RθJL = 20 °C/W (junction-to-lead).
How does the SMB (DO-214AA) package of SM6T100CAHE3_B/I compare to SMA in size and thermal performance?
The SMB (DO-214AA) package of SM6T100CAHE3_B/I measures 3.94 mm × 2.20 mm × 1.75 mm, smaller than the SMA (DO-214AC) package (4.57 mm × 2.79 mm × 2.30 mm), enabling denser PCB layouts. Thermally, SMB offers lower RθJA (100 °C/W vs. SMA's 150 °C/W typical), improving power dissipation efficiency. The SM6T100CAHE3_B/I leverages this advantage for sustained surge handling in space-constrained automotive modules.
SM6T100CAHE3_B/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:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T100CAHE3_B/I FAQ
1.How can I place an order for SM6T100CAHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CAHE3_B/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_B/I reliable?
The price and inventory of SM6T100CAHE3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SM6T100CAHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CAHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CAHE3_B/I?
SM6T100CAHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CAHE3_B/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_B/I?
For technical support, including SM6T100CAHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CAHE3_B/I requirements.
6.How does Aetrix verify that SM6T100CAHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SM6T100CAHE3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SM6T100CAHE3_B/I?
All SM6T100CAHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CAHE3_B/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_B/I part is unused and in its original packaging.
Return procedure for SM6T100CAHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CAHE3_B/I Tags
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