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Vishay General Semiconductor - Diodes Division SM15T100CAHE3_A/H
- Part No.:
- SM15T100CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T100CAHE3_A/H.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,268
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Product details
Overview
SM15T100CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 137 V maximum clamping voltage at 11.0 A IPPM, and 85.5 V stand-off voltage. It provides robust protection for automotive-grade signal lines and power rails against lightning-induced and switching transients.
For engineers reviewing the SM15T100CAHE3_A/H datasheet, SM15T100CAHE3_A/H pinout, SM15T100CAHE3_A/H application, or SM15T100CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 10.6 × 10⁻⁴/°C temperature coefficient, and compatibility with high-impedance transient sources in automotive ECUs and industrial I/O modules.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown characteristics in both polarities due to its bidirectional CA construction. Its 137 V clamping voltage at 11.0 A IPPM ensures predictable overvoltage limiting during 10/1000 μs transients, while the 85.5 V stand-off voltage enables reliable operation below system operating thresholds.
The SM15T100CAHE3_A/H features glass-passivated junctions, low inductance design, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 75 °C/W) and 150 °C max junction temperature support sustained operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - Maximum continuous reverse voltage before leakage exceeds 1.0 μA; defines safe operating margin below clamping threshold |
| VBR (min/max) | 95.0 V / 105 V - Breakdown occurs within this range at 1.0 mA test current; ensures consistent turn-on across production lots |
| VC @ IPPM | 137 V @ 11.0 A - Clamping voltage during 10/1000 μs transient; limits downstream voltage stress to ≤137 V |
| PPPM | 1500 W - Peak pulse power handling capability; supports lightning surge immunity per IEC 61000-4-5 Level 4 |
| TJ max. | +150 °C - Maximum junction temperature; enables use in engine control units and powertrain modules |
| αT | 10.6 × 10⁻⁴/°C - Temperature coefficient of VBR; predicts ±1.1 V drift over -40 °C to +125 °C operating range |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound, 0.320" × 0.246" footprint with cathode band marking omitted (bidirectional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity) | Accepts surge current during positive half-cycle; connects to protected line |
| Cathode | Transient current entry point (negative polarity) | Accepts surge current during negative half-cycle; symmetric to Anode in bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| 1500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV open-circuit / 2 kA short-circuit |
| Low inductance construction | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time) |
| Glass passivated junction | Ensures long-term reliability and stable VBR under thermal cycling and humidity exposure |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power rails in vehicle infotainment systems against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed between VCC and GND, clamping surges before they reach LDO regulators and MCU inputs. Use Value: Limits voltage to ≤137 V during 11 A transients, preventing latch-up or permanent damage to 5 V/3.3 V logic circuitry. | Use Scenario: Safeguarding analog outputs of pressure sensors in factory automation PLC modules exposed to motor-switching noise. IC Role / Device Role / Timing Role: Transient suppressor on 4–20 mA current loop output lines, shunting induced spikes to ground. Use Value: Maintains signal integrity by clamping transients within 100 ns, avoiding false triggering of downstream ADCs or isolators. |
| Telecom Data Line Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional clamp on differential pair (A/B lines), referenced to local ground plane. Use Value: Delivers symmetrical clamping (±137 V) without polarity bias, preserving differential signaling integrity during surge events. | Use Scenario: Adding secondary-level surge protection to USB 2.0 VBUS lines in smart home hubs subjected to ESD and AC coupling events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of polyfuse and DC-DC converter input. Use Value: Withstands 1500 W pulses while maintaining <1.0 μA leakage at 85.5 V, ensuring no standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA-E3/52 | 600 W PPPM, SMB package (smaller footprint), 100 V VWM, 165 V VC @ 6.1 A | Limited to lower-energy threats; unsuitable for IEC 61000-4-5 Level 4 compliance | Select when board space is constrained and surge threat level is ≤1 kV |
| 1.5KE100CA | Through-hole DO-201 package, same 100 V rating, 1500 W PPPM, but higher RθJA (100 °C/W) | Not suitable for automated SMT assembly; requires manual soldering and larger PCB area | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ100CA-E3/52 and 1.5KE100CA, the SM15T100CAHE3_A/H delivers identical 1500 W surge rating in an SMT-optimized SMC package with AEC-Q101 qualification-enabling automotive-grade reliability without layout redesign or thermal derating penalties.
Availability
SM15T100CAHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom infrastructure equipment, and consumer power adapter designs requiring stable component supply and long-term lifecycle assurance.
Supply support for SM15T100CAHE3_A/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, TVS devices, and optoelectronics with emphasis on reliability and automotive qualification.
The SM15T Series is engineered for high-energy transient suppression in harsh environments, targeting AEC-Q101-compliant automotive subsystems and industrial equipment where failure modes must be fail-safe (short-circuit).
FAQ
What does the "CA" suffix indicate in SM15T100CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration: the SM15T100CAHE3_A/H conducts and clamps symmetrically for both positive and negative transients, unlike unidirectional "A" variants. This eliminates polarity concerns during PCB placement and supports AC-coupled or floating signal lines. The device has no cathode marking, consistent with bidirectional TVS construction.
Is SM15T100CAHE3_A/H qualified for automotive applications?
Yes, SM15T100CAHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's SM15T series datasheet (Rev. 09-Jan-2024). It is rated for operation from −65 °C to +150 °C and validated for mechanical shock, temperature cycling, and humidity exposure per automotive reliability standards.
What is the maximum clamping voltage of SM15T100CAHE3_A/H under standard test conditions?
The SM15T100CAHE3_A/H has a maximum clamping voltage (VC) of 137 V at 11.0 A peak pulse current (IPPM) using the 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet and defines the upper voltage limit imposed on protected circuits during surge events.
How does the thermal resistance of SM15T100CAHE3_A/H affect its power dissipation capability?
With a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, the SM15T100CAHE3_A/H dissipates 6.5 W continuously at TA = 50 °C. At higher ambient temperatures, derating is required per Figure 2 in the datasheet-e.g., at 100 °C ambient, usable power drops to ~3.3 W to maintain TJ ≤ 150 °C.
Can SM15T100CAHE3_A/H replace older SMAJ100A devices in existing designs?
No-SM15T100CAHE3_A/H is bidirectional (CA), while SMAJ100A is unidirectional (A); their polarity markings and conduction behavior differ fundamentally. Additionally, SM15T100CAHE3_A/H uses SMC (DO-214AB) packaging versus SMAJ's SMA (DO-214AC), resulting in different pad layouts and thermal performance. Direct replacement requires schematic and layout revision.
SM15T100CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, 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):
- 11A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SM15T100CAHE3_A/H FAQ
1.How can I place an order for SM15T100CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T100CAHE3_A/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 SM15T100CAHE3_A/H reliable?
The price and inventory of SM15T100CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T100CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T100CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T100CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T100CAHE3_A/H?
SM15T100CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T100CAHE3_A/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 SM15T100CAHE3_A/H?
For technical support, including SM15T100CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T100CAHE3_A/H requirements.
6.How does Aetrix verify that SM15T100CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T100CAHE3_A/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 SM15T100CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T100CAHE3_A/H?
All SM15T100CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T100CAHE3_A/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 SM15T100CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM15T100CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T100CAHE3_A/H Tags
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