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Vishay General Semiconductor - Diodes Division SM15T30CAHE3_A/H
- Part No.:
- SM15T30CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T30CAHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,083
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Product details
Overview
SM15T30CAHE3_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), 30 V standoff voltage (VWM), 33.2 V clamping voltage at 36 A IPPM, and AEC-Q101 qualified for automotive use. It protects signal lines and power rails in automotive sensor units and industrial I/O interfaces against lightning-induced and switching transients.
For engineers reviewing the SM15T30CAHE3_A/H datasheet, SM15T30CAHE3_A/H pinout, SM15T30CAHE3_A/H application, or SM15T30CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, 30 V VWM compatibility with 3.3 V–24 V systems, AEC-Q101 qualification status, and SMC package thermal performance under high-impedance surge conditions.
Technical Context
The SM15T30CAHE3_A/H implements a glass-passivated silicon junction optimized for low-inductance, bidirectional transient suppression. Its breakdown voltage (VBR) is 33.2–36.8 V at 1 mA test current, and it clamps to ≤41.5 V at 36 A peak pulse current (10/1000 μs), ensuring robust protection of downstream ICs without overvoltage stress.
Designed for high-source-impedance threat environments (e.g., I/O lines, sensor interfaces), it operates across –65 °C to +150 °C junction temperature range, features MSL Level 1 moisture sensitivity, and maintains stable leakage (<1 μA at 30 V) and thermal resistance (RθJL = 15 °C/W) critical for automotive under-hood reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 30 V - Maximum continuous reverse voltage before clamping begins; matches 24 V nominal automotive and industrial bus systems. |
| VBR (Breakdown Voltage) | 33.2–36.8 V at 1 mA - Confirmed bidirectional breakdown threshold; ensures symmetrical clamping in both polarities. |
| VC (Clamping Voltage) | 41.5 V at 36 A (10/1000 μs) - Limits transient voltage seen by protected circuitry; stays below typical 45 V MOSFET gate oxide limits. |
| PPPM (Peak Pulse Power) | 1500 W - Sustains single-event lightning surges per IEC 61000-4-5; validated on 8.0 mm × 8.0 mm copper pads. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments; supports AEC-Q101 qualification requirements. |
| RθJL | 15 °C/W - Low junction-to-lead thermal resistance enables effective heat dissipation into PCB copper without heatsink. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | One terminal of bidirectional TVS junction | No polarity marking; symmetric conduction path enables identical clamping in positive and negative transients. |
| Cathode | Other terminal of bidirectional TVS junction | Same physical terminal as Anode due to bidirectional construction; no cathode band marking per spec. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| 1500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.18) | Minimizes overvoltage margin between clamping and breakdown, improving protection headroom for sensitive ICs. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without moisture-related popcorning or delamination. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Maintains signal integrity during 100 V/10 ms load dump events while staying within ±45 V absolute maximum ratings of automotive transceivers. |
Use Scenario: Safeguarding PLC digital input channels connected to 24 V DC field wiring exposed to relay coil kickback and motor drive noise. IC Role / Device Role / Timing Role: Primary transient suppressor on each input line, operating in parallel with optocoupler input stage. Use Value: Limits transient voltage to ≤41.5 V during 1 kA/10/1000 μs surges, preventing latch-up or damage to microcontroller GPIOs. |
| Telecom Line Interface | Consumer Device USB/Power Rail |
Use Scenario: Shielding Ethernet PHY interface circuits (e.g., RJ45 magnetics secondary side) from ESD and induced surges in building cabling. IC Role / Device Role / Timing Role: Secondary-level TVS after primary gas discharge tube, providing fast-response clamping for sub-100 ns ESD events. Use Value: Achieves <100 ps response time and <1 μA leakage at 30 V, preserving signal fidelity on 100BASE-TX differential pairs. |
Use Scenario: Protecting USB-C power delivery (PD) controller VBUS monitoring inputs and battery charging ICs in portable medical devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5–20 V power rails to absorb hot-swap and cable insertion transients. Use Value: Clamps 300 V/10/1000 μs surges to ≤41.5 V without degrading 3.3 V logic supply noise margins via low capacitance design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA-E3/57T | Lower PPPM (400 W), same VWM (30 V), SMA package (smaller thermal mass, higher RθJA = 110 °C/W) | Not AEC-Q101 qualified; suitable only for commercial-grade consumer/industrial boards with lower surge threat levels | Select when cost and board space are prioritized over automotive qualification and 1500 W surge handling. |
| SMCJ30CAHE3_A/H | Same AEC-Q101 qualification and SMC package, but 1500 W rating achieved with tighter VC tolerance (40.5 V max vs. 41.5 V) and lower leakage (<0.5 μA) | Identical application scope; preferred where tighter clamping consistency and lower standby leakage are required | Choose for next-generation designs demanding enhanced clamping repeatability and ultra-low leakage in always-on sensor nodes. |
Compared with SMAJ30CA-E3/57T, SM15T30CAHE3_A/H delivers 3.75× higher surge power handling and automotive qualification; versus SMCJ30CAHE3_A/H, it trades 1 V higher clamping for broader VBR tolerance and identical thermal performance-making it optimal for cost-sensitive AEC-Q101 designs where 41.5 V clamping remains within system safety margins.
Availability
SM15T30CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for SM15T30CAHE3_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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SM15T Series was engineered specifically for high-power transient suppression in harsh-environment applications, combining AEC-Q101 qualification, 1500 W surge capability, and SMC package thermal efficiency to replace legacy DO-15 and DO-201 packages in next-gen automotive ECUs.
FAQ
What is the clamping voltage of SM15T30CAHE3_A/H at its rated peak pulse current?
The SM15T30CAHE3_A/H clamps to a maximum of 41.5 V at 36 A peak pulse current (10/1000 μs waveform), as specified in the Vishay datasheet revision 09-Jan-2024. This value is measured under standardized test conditions with 0.31" × 0.31" copper pads per terminal. The clamping voltage ensures protected circuits remain within safe operating limits during high-energy transients, and SM15T30CAHE3_A/H maintains this performance across its full operating temperature range.
Is SM15T30CAHE3_A/H suitable for automotive applications?
Yes, SM15T30CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use, with ordering code suffix "HE3" indicating RoHS-compliant and AEC-Q101 qualified construction. It meets requirements for temperature cycling, high-temperature reverse bias, and mechanical shock relevant to engine control units and body electronics. SM15T30CAHE3_A/H is validated for operation from –65 °C to +150 °C junction temperature, supporting under-hood deployment.
What does the "CA" suffix in SM15T30CAHE3_A/H indicate?
The "CA" suffix in SM15T30CAHE3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive- and negative-polarity voltage spikes. Unlike unidirectional variants (e.g., SM15T30A), SM15T30CAHE3_A/H has no polarity marking and functions identically in either direction-critical for protecting AC-coupled or differential signal lines such as CAN bus or Ethernet PHY interfaces.
What is the thermal resistance from junction to lead (RθJL) for SM15T30CAHE3_A/H?
The SM15T30CAHE3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, as published in the Vishay SM15T Series datasheet. This low value enables efficient heat transfer from the silicon die to the PCB copper through the SMC package leads, supporting reliable operation at elevated ambient temperatures without external heatsinking. SM15T30CAHE3_A/H leverages this thermal performance to sustain repeated surge events in industrial control environments.
How does SM15T30CAHE3_A/H differ from the SMAJ30CA series?
SM15T30CAHE3_A/H delivers 1500 W peak pulse power (10/1000 μs) in an SMC package with AEC-Q101 qualification, whereas SMAJ30CA offers only 400 W in a smaller SMA package and lacks automotive qualification. SM15T30CAHE3_A/H also features lower thermal resistance (RθJL = 15 °C/W vs. ~30 °C/W for SMAJ) and tighter clamping consistency under high-current transients. These differences make SM15T30CAHE3_A/H appropriate for mission-critical automotive and industrial surge protection where SMAJ30CA would be insufficient.
SM15T30CAHE3_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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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)
SM15T30CAHE3_A/H FAQ
1.How can I place an order for SM15T30CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T30CAHE3_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 SM15T30CAHE3_A/H reliable?
The price and inventory of SM15T30CAHE3_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 SM15T30CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM15T30CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T30CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T30CAHE3_A/H?
SM15T30CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T30CAHE3_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 SM15T30CAHE3_A/H?
For technical support, including SM15T30CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T30CAHE3_A/H requirements.
6.How does Aetrix verify that SM15T30CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM15T30CAHE3_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 SM15T30CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM15T30CAHE3_A/H?
All SM15T30CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T30CAHE3_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 SM15T30CAHE3_A/H part is unused and in its original packaging.
Return procedure for SM15T30CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T30CAHE3_A/H Tags
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