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Vishay General Semiconductor - Diodes Division 1.5SMC15CAHE3/57T
- Part No.:
- 1.5SMC15CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CAHE3/57T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,917
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Product details
Overview
1.5SMC15CAHE3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 15 V standoff voltage (VWM), 16.7 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage (VC) at 70.8 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC15CAHE3/57T datasheet, 1.5SMC15CAHE3/57T pinout, 1.5SMC15CAHE3/57T application, or 1.5SMC15CAHE3/57T equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, SMC (DO-214AB) package thermal resistance (RθJL = 15 °C/W), and compliance with UL 497B surge protector classification.
Technical Context
This device operates as a voltage-clamped shunt protector: under transient overvoltage, it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables rapid energy diversion without thermal runaway.
The 1.5SMC15CAHE3/57T is rated for -65 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and is qualified to AEC-Q101 - confirming suitability for automotive-grade PCB assemblies subject to vibration, thermal cycling, and high-reliability field operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown, min) | 14.3 V - Minimum voltage at which avalanche conduction initiates at 1.0 mA test current; ensures predictable turn-on timing. |
| VC (Clamping, max) | 21.2 V - Maximum voltage seen across terminals during 70.8 A 10/1000 μs transient; directly limits stress on downstream ICs. |
| PPPM | 1500 W - Peak transient power dissipation capability; supports high-energy lightning-induced surges per IEC 61000-4-5. |
| ID (Leakage, max) | 1.0 μA - Reverse leakage at VWM; negligible loading on high-impedance sensor or communication lines. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive or enclosed industrial enclosures. |
| RθJL | 15 °C/W - Junction-to-leads thermal resistance; allows direct PCB copper pad heat sinking without external heatsink. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no functional distinction in layout. |
| Terminal 2 | Anode / Cathode (bidirectional) | Electrically identical to Terminal 1; device conducts symmetrically - requires no orientation during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports deployment in ADAS sensors and body control modules without additional qualification. |
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy transients from inductive load switching or ESD events without degradation - eliminates need for cascaded protection stages. |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes overvoltage overshoot during fast transients - critical for protecting 3.3 V or 5 V logic interfaces with tight voltage margins. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity handling - reduces manufacturing complexity and cost. |
| UL 497B recognized (QVGQ2) | Meets safety standards for telecom and industrial surge protectors - simplifies end-equipment certification for Class 2 circuits. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role: Bidirectional shunt clamp placed across differential signal pair or supply rail to divert surge energy to ground. Use Value: Maintains signal integrity by clamping transients to ≤21.2 V - preventing latch-up or damage to 12 V-tolerant automotive MCUs and PHYs. |
Use Scenario: Safeguarding 24 V DC digital input modules against field-wiring induced surges and relay coil flyback. IC Role / Device Role: Primary overvoltage clamp on input terminal block, upstream of optocoupler or Schmitt trigger interface. Use Value: Absorbs 1500 W pulses without failure - extends system uptime in factory automation where maintenance windows are constrained. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails or RS-485 termination networks. IC Role / Device Role: Fast-response bidirectional TVS placed between VCC and GND near connector to suppress coupled transients. Use Value: Limits clamping voltage to 21.2 V - compatible with 24 V PoE-powered devices and avoids false resets during EFT bursts. |
Use Scenario: Input-stage protection on AC-DC adapter primary-side rectifier output or secondary-side 5 V/12 V rails. IC Role / Device Role: Standoff-rated clamp absorbing residual surges passing through MOV-based primary protection. Use Value: Provides precise 12.8 V standoff and low leakage - prevents standby power loss while enabling reliable brownout recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same VWM (12.8 V) and VC (24.4 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA). | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 level 3/4 surge testing. | Select when board space is constrained and surge threat level is defined as <600 W only. |
| 1.5KE15CA | Through-hole TO-204AA (DO-201AE); same electrical specs but incompatible mounting; higher RθJA (75 °C/W vs. 15 °C/W). | Requires manual soldering or wave soldering; not suitable for automated SMT lines or high-density layouts. | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CAHE3/57T delivers superior thermal performance (RθJL = 15 °C/W), full AEC-Q101 qualification, and 1500 W surge capacity in an SMT-optimized SMC package - making it the preferred choice for volume automotive and industrial production requiring reliability, repeatability, and regulatory alignment.
Availability
1.5SMC15CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply, AEC-Q101 traceability, and UL 497B recognition.
Supply support for 1.5SMC15CAHE3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC15CAHE3/57T at its rated peak pulse current?
The 1.5SMC15CAHE3/57T has a maximum clamping voltage (VC) of 21.2 V at its rated peak pulse current (IPPM) of 70.8 A, measured using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and confirms the device's ability to limit transient overvoltage to a safe level for downstream 15 V-rated circuitry. The 1.5SMC15CAHE3/57T achieves this with minimal voltage overshoot due to its low incremental surge resistance.
Is the 1.5SMC15CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC15CAHE3/57T is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix, indicating RoHS-compliant and AEC-Q101-qualified construction. It meets requirements for temperature cycling, humidity bias, mechanical shock, and surge robustness required in engine control units, body electronics, and ADAS sensor modules. The 1.5SMC15CAHE3/57T is validated for operation from -65 °C to +150 °C junction temperature.
How does the bidirectional configuration of the 1.5SMC15CAHE3/57T affect PCB layout?
The 1.5SMC15CAHE3/57T has no polarity marking and functions identically in both directions, eliminating orientation constraints during SMT placement. PCB layout requires symmetric 0.31" x 0.31" (8.0 mm x 8.0 mm) copper pads per terminal to ensure optimal thermal dissipation and surge current handling. Unlike unidirectional TVS diodes, the 1.5SMC15CAHE3/57T does not require cathode band alignment - reducing placement errors and enabling simplified routing for differential or AC-coupled lines.
What is the maximum reverse leakage current for the 1.5SMC15CAHE3/57T at its standoff voltage?
The 1.5SMC15CAHE3/57T exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated standoff voltage (VWM) of 12.8 V, measured at 25 °C. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance applications such as sensor bias networks or battery-backed real-time clocks. The 1.5SMC15CAHE3/57T maintains leakage below 5.0 μA up to 85 °C ambient, supporting stable operation in thermally demanding environments.
Does the 1.5SMC15CAHE3/57T meet any safety certifications?
Yes, the 1.5SMC15CAHE3/57T is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional configurations, meeting UL 497B requirements for signal and power circuit protectors. It also complies with RoHS Directive 2011/65/EU and is halogen-free per Vishay's material categorization standard. The 1.5SMC15CAHE3/57T carries no exemption clauses for lead or other restricted substances.
1.5SMC15CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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)
1.5SMC15CAHE3/57T FAQ
1.How can I place an order for 1.5SMC15CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CAHE3/57T 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 1.5SMC15CAHE3/57T reliable?
The price and inventory of 1.5SMC15CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CAHE3/57T?
1.5SMC15CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CAHE3/57T 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 1.5SMC15CAHE3/57T?
For technical support, including 1.5SMC15CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC15CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CAHE3/57T 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 1.5SMC15CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CAHE3/57T?
All 1.5SMC15CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CAHE3/57T, 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 1.5SMC15CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC15CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CAHE3/57T Tags
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