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Vishay General Semiconductor - Diodes Division SM6T100CAHE3_B/H
- Part No.:
- SM6T100CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CAHE3_B/H.pdf
- Description:
- 600W,100V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,783
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Product details
Overview
SM6T100CAHE3_B/H 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, power rails, and I/O interfaces.
For engineers reviewing the SM6T100CAHE3_B/H datasheet, SM6T100CAHE3_B/H pinout, SM6T100CAHE3_B/H application, or SM6T100CAHE3_B/H 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_B/H operates as a voltage-clamped crowbar device during transients, leveraging an avalanche breakdown junction to divert surge energy away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-dependent layout constraints.
Designed for high-reliability automotive environments, it features glass-passivated chip construction, meets MSL Level 1 per J-STD-020, and supports peak surge currents up to 4.4 A (10/1000 μs) while maintaining stable clamping performance across -65 °C to +150 °C operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 95.0 / 105 V - Breakdown voltage range at 1 mA test current; defines turn-on threshold consistency |
| VC @ IPPM | 137 V @ 4.4 A - Clamping voltage under 10/1000 μs surge; determines maximum stress on downstream ICs |
| PPPM | 600 W - Peak pulse power handling capacity; defines survivability against lightning or inductive switch-off surges |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing requirements for thermal management |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional configuration confirmed by CA suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive half-cycle) | One terminal of symmetrical avalanche junction; accepts surge current in either direction |
| Cathode | Transient current entry point (negative half-cycle) | Second terminal of symmetrical avalanche junction; functionally identical to Anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without derating |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving clamping fidelity |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current under humidity and thermal stress |
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 alternator ripple. 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 ADC saturation and latch-up in automotive-grade MCUs operating at 3.3 V or 5 V. | Use Scenario: Safeguarding CANH/CANL differential pair against ESD events and bus fault transients in factory automation nodes. IC Role / Device Role / Timing Role: Symmetrical TVS pair (one per line) referenced to common ground, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity below 137 V clamping level, preserving CAN bit timing margins and avoiding false dominant/recessive state errors. |
| Consumer Power Adapter Input | Telecom DSL Line Interface |
Use Scenario: Secondary-side overvoltage suppression on 12 V DC output rails of wall-mounted AC/DC adapters exposed to mains-borne surges. IC Role / Device Role / Timing Role: Standoff-rated TVS shunting output to ground during overvoltage events exceeding 100 V. Use Value: Prevents damage to downstream DC-DC converters and USB-PD controllers by clamping transients within safe operating area defined by 137 V VC. | Use Scenario: Protecting ADSL/VDSL line driver/receiver ICs from lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional TVS connected across line pair (tip/ring) to absorb common-mode surges up to 600 W. Use Value: Enables compliance with ITU-T K.20/21 surge immunity requirements while preserving low-capacitance signal path (<100 pF typical). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | Same SMB package, 100 V VWM, but 100 W lower PPPM (500 W vs. 600 W); higher clamping voltage (145 V vs. 137 V) | Limited to lower-energy transients; not recommended for ISO 7637-2 Pulse 5a (load dump) | Select SM6T100CAHE3_B/H when 600 W surge margin and tighter clamping ratio are required |
| 1.5SMC100CA | Different package (SMC/DO-214AB), larger footprint, higher thermal mass; same VWM and VC, but RθJA = 30 °C/W vs. 100 °C/W | Better thermal performance but incompatible with space-constrained SMB layouts; requires PCB redesign | Choose SM6T100CAHE3_B/H for compact automotive modules where board area is constrained |
Compared with SMBJ100CA and 1.5SMC100CA, SM6T100CAHE3_B/H delivers superior surge energy handling in the smallest standardized footprint, with AEC-Q101 qualification enabling direct use in automotive ECUs without additional qualification overhead.
Availability
SM6T100CAHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and telecom DSL line interface requiring stable component supply, AEC-Q101 compliance, and consistent 600 W surge rating.
Supply support for SM6T100CAHE3_B/H 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 automotive-grade qualification.
The SM6T Series is designed specifically for high-volume, space-constrained transient suppression in automotive, industrial, and telecom systems where bidirectional clamping, low profile, and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SM6T100CAHE3_B/H?
The "CA" suffix in SM6T100CAHE3_B/H denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity surges. This eliminates the need for polarity-aware placement on PCBs and ensures identical clamping behavior regardless of transient direction-critical for protecting differential signal lines like CAN or RS-485. The SM6T100CAHE3_B/H has no cathode band marking, confirming its bidirectional design.
Is SM6T100CAHE3_B/H qualified for automotive applications?
Yes, SM6T100CAHE3_B/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which designates RoHS-compliant and AEC-Q101 qualified variants. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev E, making it suitable for under-hood and body-control module applications where reliability under thermal and electrical stress is essential.
What is the clamping voltage of SM6T100CAHE3_B/H at its rated peak pulse current?
The clamping voltage (VC) of SM6T100CAHE3_B/H is 137 V at a peak pulse current (IPPM) of 4.4 A, measured using the standard 10/1000 μs double-exponential waveform. This value represents the maximum voltage seen across the protected circuit during a surge event and is critical for ensuring downstream components remain within their absolute maximum ratings-especially for 3.3 V or 5 V logic interfaces interfacing with automotive sensors.
How does the SMB (DO-214AA) package of SM6T100CAHE3_B/H impact PCB layout?
The SMB (DO-214AA) package of SM6T100CAHE3_B/H measures 3.94 mm × 2.20 mm × 1.52 mm and requires minimum 5.0 mm × 5.0 mm copper pads per terminal for optimal thermal dissipation and surge current handling. Its low-profile design supports automated placement and reflow, but designers must observe the recommended pad layout (0.086" × 0.060" min.) to maintain RθJA ≤ 100 °C/W and avoid solder joint fatigue under thermal cycling.
What is the maximum operating junction temperature for SM6T100CAHE3_B/H?
The maximum operating junction temperature (TJ max.) for SM6T100CAHE3_B/H is +150 °C, as specified in Vishay's SM6T series datasheet. This rating allows reliable operation in demanding automotive under-hood environments and industrial enclosures where ambient temperatures exceed 105 °C. Derating curves in Figure 2 confirm usable pulse power down to 50% at TJ = 125 °C, supporting sustained surge resilience in thermally stressed systems.
SM6T100CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- 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/H FAQ
1.How can I place an order for SM6T100CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CAHE3_B/H 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/H reliable?
The price and inventory of SM6T100CAHE3_B/H 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/H is usually 5 days.
3.What payment methods are accepted for SM6T100CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CAHE3_B/H?
SM6T100CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CAHE3_B/H 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/H?
For technical support, including SM6T100CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CAHE3_B/H requirements.
6.How does Aetrix verify that SM6T100CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T100CAHE3_B/H 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/H meets industry standards.
7.What is the process for return or replacement of SM6T100CAHE3_B/H?
All SM6T100CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CAHE3_B/H, 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/H part is unused and in its original packaging.
Return procedure for SM6T100CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CAHE3_B/H Tags
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