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Vishay General Semiconductor - Diodes Division SM6T100CAHE3/5B
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- Part No.:
- SM6T100CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T100CAHE3/5B.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,873
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Product details
Overview
SM6T100CAHE3/5B 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 maximum clamping voltage (VC) at 4.4 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs). It provides robust ESD and surge protection for automotive sensor signal lines, power rails, and I/O interfaces.
For engineers reviewing the SM6T100CAHE3/5B datasheet, SM6T100CAHE3/5B pinout, SM6T100CAHE3/5B application, or SM6T100CAHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, clamping behavior under standardized transients, and direct alternatives with documented differences in breakdown symmetry and leakage.
Technical Context
The SM6T100CAHE3/5B is a glass-passivated, bidirectional TVS diode designed to clamp transient overvoltages across both polarities without polarity marking. Its 137 V clamping voltage at 4.4 A (10/1000 μs) ensures predictable voltage limiting during lightning-induced surges or inductive switching events.
With a junction-to-ambient thermal resistance of 100 °C/W and maximum operating temperature of +150 °C, it supports reliable operation in automotive under-hood environments. Its AEC-Q101 qualification confirms suitability for automotive electronics where reliability under thermal cycling and mechanical stress is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating range for protected circuit. |
| VBR (min/max) | 95.0 V / 105 V - Breakdown occurs within this band at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 137 V at 4.4 A (10/1000 μs) - Clamped voltage seen by downstream circuit during standardized surge; limits stress on ICs and MOSFETs. |
| PPPM | 600 W - Peak pulse power handling capability; determines survivability against IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source). |
| ID @ VWM | 1.0 μA - Reverse leakage at 100 V; low enough to avoid loading sensitive analog or high-impedance sensor inputs. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in engine control units and ADAS modules with elevated ambient temperatures. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs PCB pad design (0.2" × 0.2" copper per terminal required for rated power). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no orientation required during placement. |
| Case / Body | Thermal and mechanical interface | Plastic body with UL 94 V-0 rating; transfers heat to PCB copper pads; requires 0.2" × 0.2" (5.0 mm × 5.0 mm) pad per terminal for full 600 W rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine management, infotainment, and ADAS; includes temperature cycling, humidity bias, and mechanical shock testing. |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 surge waveforms up to 4 kV open-circuit voltage with 2 Ω source impedance without degradation. |
| Glass-passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives; critical for under-hood deployment. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage overshoot during fast transients; protects 100 V-rated components such as CAN FD transceivers and gate drivers. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors 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 precision ADC front-end. Use Value: Limits voltage excursion to ≤137 V during 100 A load dump events, preserving sensor accuracy and preventing ADC saturation or latch-up. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subjected to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from inductive kickback (up to 600 W) while maintaining <1 μA leakage at 24 V nominal. Use Value: Enables >100,000 actuation cycles without degradation; eliminates false triggering caused by transient-induced logic glitches. |
| Telecom Power Rail Protection | Consumer USB-C Port Protection |
Use Scenario: Guarding 48 V DC power inputs of PoE-powered network switches against induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Primary clamping device on secondary-side DC bus; coordinates with upstream MOVs and series fuses for staged protection. Use Value: Clamps 48 V rail to ≤137 V within 1 ns, preventing damage to DC-DC converters and Ethernet PHYs during 1.2/50 μs transients. |
Use Scenario: Integrated into USB-C receptacle ESD protection layout for portable devices requiring compliance with IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Secondary-level surge suppressor backing up integrated ESD diodes; handles higher-energy events beyond ESD-only ratings. Use Value: Survives repeated 10/1000 μs surges up to 4.4 A while maintaining <1 μA leakage-critical for battery-powered device standby current budgets. |
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) and VC (137 V), but lower PPPM (400 W); SMB package identical; no AEC-Q101 qualification. | Not suitable for automotive under-hood use; acceptable for industrial/commercial power supplies with lower surge exposure. | Select SMAJ100CA only when AEC-Q101 is not required and system-level surge testing confirms 400 W sufficiency. |
| SMCJ100CA | Higher PPPM (1500 W), same VWM/VC, but larger SMC (DO-214AB) package; AEC-Q101 qualified variant available (SMCJ100CAHE3). | Requires PCB redesign due to 7.11 mm × 6.22 mm footprint vs. SMB's 4.57 mm × 3.94 mm; better for high-energy surge zones. | Choose SMCJ100CAHE3 when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when longer transient duration (>1 ms) is expected. |
Compared with SMAJ100CA and SMCJ100CA, the SM6T100CAHE3/5B uniquely balances AEC-Q101 qualification, compact SMB footprint, and 600 W surge capacity-making it optimal for space-constrained automotive modules where both reliability and board area are critical.
Availability
SM6T100CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply and traceable AEC-Q101 compliance.
Supply support for SM6T100CAHE3/5B 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, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade validation.
The SM6T Series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-inductance packaging, and precise clamping performance across wide temperature ranges.
FAQ
What does the "CA" suffix indicate in SM6T100CAHE3/5B?
The "CA" suffix denotes a bidirectional configuration: the SM6T100CAHE3/5B conducts and clamps transients equally in both directions, with no polarity marking required. This differs from unidirectional variants (e.g., SM6T100A) that require cathode alignment and exhibit forward conduction only in one direction. The CA version is used where voltage polarity on the protected line is undefined or alternating.
Is SM6T100CAHE3/5B suitable for IEC 61000-4-5 surge testing?
Yes, the SM6T100CAHE3/5B is rated for 600 W peak pulse power with a 10/1000 μs waveform-directly aligned with IEC 61000-4-5 Level 4 (4 kV, 2 Ω source impedance). When mounted on 0.2" × 0.2" copper pads per terminal, it clamps to 137 V at 4.4 A, ensuring protected circuits remain within safe operating limits during standardized surge events.
Does SM6T100CAHE3/5B meet automotive qualification standards?
Yes, the "HE3" suffix confirms AEC-Q101 qualification. The SM6T100CAHE3/5B has undergone stress testing including temperature cycling, high-temperature operating life, and mechanical shock per AEC-Q101 Rev D. This makes it suitable for automotive applications such as engine control units, body electronics, and ADAS sensor interfaces where component failure is unacceptable.
What is the thermal resistance and how does it affect PCB layout for SM6T100CAHE3/5B?
The SM6T100CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W. To achieve its full 600 W pulse rating, each terminal must be soldered to a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad. Smaller pads increase thermal resistance, derating peak power and risking thermal runaway during repetitive surges.
How does SM6T100CAHE3/5B compare to unidirectional SM6T100AHE3/5B in circuit implementation?
The SM6T100CAHE3/5B replaces two unidirectional diodes in anti-series configuration with a single device, eliminating polarity concerns and reducing component count. Unlike SM6T100AHE3/5B-which conducts forward only from anode to cathode-the CA version clamps symmetrically, making it ideal for AC-coupled lines, differential buses (e.g., CAN), or any node where transient polarity cannot be guaranteed.
SM6T100CAHE3/5B 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):
- 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)
SM6T100CAHE3/5B FAQ
1.How can I place an order for SM6T100CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T100CAHE3/5B 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 SM6T100CAHE3/5B reliable?
The price and inventory of SM6T100CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T100CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SM6T100CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T100CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T100CAHE3/5B?
SM6T100CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T100CAHE3/5B 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 SM6T100CAHE3/5B?
For technical support, including SM6T100CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T100CAHE3/5B requirements.
6.How does Aetrix verify that SM6T100CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T100CAHE3/5B 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 SM6T100CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SM6T100CAHE3/5B?
All SM6T100CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T100CAHE3/5B, 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 SM6T100CAHE3/5B part is unused and in its original packaging.
Return procedure for SM6T100CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T100CAHE3/5B Tags
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