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Vishay General Semiconductor - Diodes Division SM15T10CAHM3/I
- Part No.:
- SM15T10CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T10CAHM3/I.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,557
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Product details
Overview
SM15T10CAHM3/I 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), 10 V stand-off voltage (VWM), and 14.5 V maximum clamping voltage (VC) at 103 A peak pulse current. 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 SM15T10CAHM3/I datasheet, SM15T10CAHM3/I pinout, SM15T10CAHM3/I application, or SM15T10CAHM3/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and verified 10/1000 μs waveform performance under 8.0 mm × 8.0 mm copper pad mounting conditions.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown in both polarities due to its bidirectional construction. Its glass-passivated junction ensures stable leakage (<10 μA at VWM) and low dynamic impedance, enabling fast response to transients up to 103 A without thermal runaway.
The SM15T10CAHM3/I is thermally characterized with RθJA = 75 °C/W and RθJL = 15 °C/W, supporting operation from −65 °C to +150 °C. Its failure mode under overstress is a short circuit, consistent with IEC 61000-4-5 Level 4 compliance requirements for industrial and automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR min/max | 9.5 V / 10.5 V at 1.0 mA - Confirmed breakdown threshold range ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 14.5 V at 103 A (10/1000 μs) - Clamping voltage limits downstream IC stress during worst-case surge events. |
| PPPM | 1500 W - Peak pulse power handling capacity meets IEC 61000-4-5 surge immunity requirements for industrial and automotive ports. |
| TJ max | +150 °C - Enables reliable operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
Pinout & Package
SM15T10CAHM3/I uses a two-terminal SMC (DO-214AB) package with no polarity marking-consistent with bidirectional TVS construction. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either polarity) | Accepts surge current in either direction; symmetric conduction enables single-device protection of AC or differential lines. |
| Cathode | Transient current exit point (either polarity) | Completes bidirectional clamping path; no cathode band marking distinguishes it from unidirectional variants. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled, differential, or floating signal paths without polarity concerns. |
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and supports lead-free reflow profiles up to 260 °C peak (MSL Level 1). |
| Low clamping ratio (VC/VWM = 1.45) | Minimizes voltage overshoot during transients, reducing risk of latch-up or damage to 12 V-tolerant interface ICs. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers in engine control modules from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching PHY layer. Use Value: Maintains signal integrity below 14.5 V clamping level while surviving repeated 103 A pulses per ISO 7637-2 Pulse 5a test profile. | Use Scenario: Safeguarding PLC analog input channels (4–20 mA, 0–10 V) against induced surges from nearby motor drives. IC Role / Device Role / Timing Role: Primary overvoltage limiter on field-side terminals, coordinated with series impedance and filtering. Use Value: Limits transient voltage to ≤14.5 V within 1 ns response time, preventing ADC saturation and front-end op-amp damage. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHY magnetics and PoE injectors from lightning-induced common-mode surges on outdoor cabling. IC Role / Device Role / Timing Role: Common-mode TVS pair (two SM15T10CAHM3/I devices) across line pairs to clamp differential and common-mode transients. Use Value: Delivers 1500 W surge handling per line pair with matched VBR tolerance (±5%), ensuring balanced clamping and minimal skew. | Use Scenario: Input-stage surge suppression on USB-C PD and 12 V wall adapters exposed to mains-borne transients. IC Role / Device Role / Timing Role: Secondary-level protector after MOV, absorbing residual high-frequency energy missed by bulk clamping. Use Value: Provides precise 10 V standoff and low-leakage (<10 μA) to avoid standby power loss while clamping to 14.5 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10CA | 600 W PPPM, SMA package, VC = 17.0 V @ 39.5 A | Lower power rating; suited for consumer-grade, non-automotive designs with lower threat levels | Select when cost sensitivity outweighs automotive qualification and 1500 W surge margin is unnecessary. |
| SMCJ10CA | 1500 W PPPM, same SMC package, VC = 17.0 V @ 88.2 A, non-AEC-Q101 | Lacks AEC-Q101 qualification and halogen-free certification; broader VBR tolerance (±10%) | Choose for industrial applications where automotive reliability validation is not required and higher clamping voltage is acceptable. |
Compared with SMAJ10CA and SMCJ10CA, SM15T10CAHM3/I delivers tighter VBR tolerance (±5%), lower clamping voltage (14.5 V vs. ≥17.0 V), and full AEC-Q101/halogen-free compliance-making it optimal for safety-critical automotive and high-reliability industrial deployments where surge margin and long-term stability are design priorities.
Availability
SM15T10CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, telecom line interfaces, and consumer power adapter inputs requiring stable component supply across extended production lifecycles.
Supply support for SM15T10CAHM3/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 high-reliability, high-power, and automotive-qualified solutions.
The SM15T Series is designed specifically for robust transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where 1500 W surge capability, AEC-Q101 validation, and low-inductance SMC packaging are essential.
FAQ
What does the "HM3" suffix indicate in SM15T10CAHM3/I?
The HM3 suffix in SM15T10CAHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive reliability standards-including temperature cycling, highly accelerated life testing (HALT), and electrostatic discharge (ESD) per AEC-Q101-and guarantees material content meets JEDEC J-STD-208 and IEC 61249-2-21 requirements. SM15T10CAHM3/I is fully traceable to Vishay's qualified automotive production line.
Is SM15T10CAHM3/I suitable for protecting CAN FD bus lines?
Yes, SM15T10CAHM3/I is suitable for CAN FD bus protection due to its bidirectional clamping, 10 V stand-off voltage matching typical 12 V nominal bus levels, and 14.5 V clamping voltage that stays well below the 18 V absolute maximum rating of most CAN FD transceivers. Its 1 ns response time and low dynamic impedance ensure effective suppression of ESD and fast transients defined in ISO 10605 and ISO 16750-2 without signal distortion.
How does SM15T10CAHM3/I differ from unidirectional SM15T10A variants?
SM15T10CAHM3/I is bidirectional with symmetrical breakdown and no polarity marking, whereas SM15T10A is unidirectional with a cathode band and forward conduction capability. The "CA" suffix explicitly indicates bidirectional function, resulting in identical VBR, VWM, and VC in both directions-critical for AC, differential, or floating signal protection. SM15T10A cannot replace SM15T10CAHM3/I in bidirectional applications without circuit redesign.
What PCB layout guidance applies to SM15T10CAHM3/I for optimal surge performance?
For optimal surge performance, SM15T10CAHM3/I must be mounted on minimum 8.0 mm × 8.0 mm copper pads per terminal, as specified in Vishay's datasheet Figure 2. Short, wide traces (<5 mm length, ≥1.5 mm width) between the device and protected node minimize inductance. Ground and power planes should be solid beneath the pads, and no vias should be placed within the pad area. Thermal relief is discouraged to preserve pulse current path integrity during 10/1000 μs transients.
Does SM15T10CAHM3/I require derating at elevated ambient temperatures?
Yes, SM15T10CAHM3/I requires derating above TA = 25 °C, per Figure 2 in the Vishay datasheet (Document Number: 88380). At 85 °C ambient, its peak pulse power capability reduces to approximately 750 W (50% derating), and at 125 °C, it drops to ~375 W. Designers must verify clamping performance under worst-case thermal conditions using the published derating curve and ensure the device remains within its safe operating area during system-level surge testing.
SM15T10CAHM3/I 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 103A
- 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 (SMC)
SM15T10CAHM3/I FAQ
1.How can I place an order for SM15T10CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T10CAHM3/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 SM15T10CAHM3/I reliable?
The price and inventory of SM15T10CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T10CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM15T10CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T10CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T10CAHM3/I?
SM15T10CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T10CAHM3/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 SM15T10CAHM3/I?
For technical support, including SM15T10CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T10CAHM3/I requirements.
6.How does Aetrix verify that SM15T10CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM15T10CAHM3/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 SM15T10CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM15T10CAHM3/I?
All SM15T10CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T10CAHM3/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 SM15T10CAHM3/I part is unused and in its original packaging.
Return procedure for SM15T10CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T10CAHM3/I Tags
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