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Vishay General Semiconductor - Diodes Division 1.5SMC12CAHE3/57T
- Part No.:
- 1.5SMC12CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12CAHE3/57T.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,420
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Product details
Overview
1.5SMC12CAHE3/57T 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 12 V breakdown voltage (VBR min/max = 11.4–12.6 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 16.7 V at 89.8 A, and operates across –65 °C to +150 °C. It is AEC-Q101 qualified and used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC12CAHE3/57T datasheet, 1.5SMC12CAHE3/57T pinout, 1.5SMC12CAHE3/57T application, or 1.5SMC12CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.4), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on DO-214AB footprints.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) to transient surges such as ESD, lightning-induced spikes, and inductive switching events. Its bidirectional architecture enables symmetrical clamping in both polarities without polarity marking, making it suitable for AC-coupled or floating signal paths.
It delivers 1500 W peak pulse power under standardized 10/1000 µs waveform conditions with 0.01% duty cycle, and maintains stable performance up to 150 °C junction temperature. Thermal resistance is 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), supporting reliable operation on standard 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V - Ensures consistent avalanche initiation within tight tolerance for predictable clamping onset |
| VWM | 10.2 V - Maximum continuous reverse operating voltage before leakage exceeds 5 µA |
| VC @ IPPM | 16.7 V at 89.8 A - Clamped voltage during 1500 W surge; defines protected circuit's maximum stress level |
| IPPM | 89.8 A - Peak pulse current handling capacity under 10/1000 µs waveform |
| PPPM | 1500 W - Surge energy absorption capability critical for automotive load-dump and ISO 7637-2 compliance |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), bidirectional device with no polarity marking; symmetric terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative transients; forms one side of symmetrical clamping path |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive transients; forms other side of symmetrical clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 |
| 1500 W peak pulse power | Withstands severe transients like ISO 7637-2 Pulse 5a (load dump) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling |
| Glass passivated junction | Enhances long-term stability and reduces parameter drift under thermal and humidity stress |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to limit transient excursions. Use Value: Prevents false triggering and permanent damage to 3.3 V/5 V microcontrollers and precision ADCs by clamping surges to ≤16.7 V. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing >1 kV transients before they reach optocoupler or Schmitt-trigger input stages. Use Value: Eliminates need for external series impedance or RC filtering while maintaining fast edge response for 10 kHz+ input signal integrity. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Bidirectional clamping element integrated into hybrid coupler or transformer center-tap protection network. Use Value: Maintains signal fidelity up to 100 MHz while diverting >10 A surge currents away from sensitive PHY transceivers. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Across-motor terminals to clamp inductive kickback during MOSFET/FET switch-off transitions. Use Value: Extends MOSFET lifetime by limiting drain-source voltage to 16.7 V, avoiding avalanche overstress in low-voltage drive circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA-E3/52 | Lower peak power (600 W), same VBR range and DO-214AA package | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD); not rated for ISO 7637-2 load dump | Select when board space is constrained and surge requirements are limited to ±8 kV contact ESD. |
| 1.5KE12CA | Through-hole TO-218 package, identical electrical specs but higher RθJA (60 °C/W) | Requires manual or wave soldering; less compatible with high-volume SMT lines | Choose for legacy through-hole designs or where thermal mass improves surge endurance in non-automated assemblies. |
Compared with SMBJ12CA-E3/52 and 1.5KE12CA, the 1.5SMC12CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package - enabling drop-in use in automotive SMT production while delivering superior clamping performance and thermal reliability.
Availability
1.5SMC12CAHE3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply, AEC-Q101 compliance, and high-reliability transient suppression.
Supply support for 1.5SMC12CAHE3/57T 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and communications systems where compact size, repeatable clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC12CAHE3/57T under maximum surge conditions?
The 1.5SMC12CAHE3/57T has a maximum clamping voltage (VC) of 16.7 V at its peak pulse current (IPPM) of 89.8 A, measured using the standardized 10/1000 µs double-exponential waveform. This value ensures downstream components see no more than 16.7 V during a full 1500 W transient event, directly supporting 12 V system-level protection design margins.
Is the 1.5SMC12CAHE3/57T suitable for automotive applications?
Yes, the 1.5SMC12CAHE3/57T is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It meets stringent requirements for temperature cycling, high-temperature reverse bias, and mechanical shock - making it appropriate for engine control units, body electronics, and ADAS sensor modules where reliability under thermal and electrical stress is critical.
How does the bidirectional configuration of the 1.5SMC12CAHE3/57T affect its PCB layout?
The 1.5SMC12CAHE3/57T has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation alignment. It can be placed across AC-coupled lines, transformer center taps, or floating buses without concern for anode/cathode orientation - simplifying layout, reducing assembly errors, and enabling reuse across differential or symmetrical signal paths.
What is the maximum operating temperature for the 1.5SMC12CAHE3/57T?
The 1.5SMC12CAHE3/57T supports a junction temperature range of –65 °C to +150 °C. Its thermal resistance (RθJA) is 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads, allowing sustained operation at full power in ambient temperatures up to +85 °C - sufficient for under-hood automotive and industrial motor drive environments.
Does the 1.5SMC12CAHE3/57T require derating at elevated ambient temperatures?
Yes, the 1.5SMC12CAHE3/57T must be derated above 25 °C ambient per Figure 2 in the Vishay datasheet (Document Number 88303). At 85 °C ambient, its peak pulse power drops to approximately 750 W (50% derating), and at 125 °C, it falls to ~300 W. Designers must apply this derating curve when sizing for worst-case thermal conditions in sealed enclosures or high-power density layouts.
1.5SMC12CAHE3/57T 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- 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)
1.5SMC12CAHE3/57T FAQ
1.How can I place an order for 1.5SMC12CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12CAHE3/57T 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 1.5SMC12CAHE3/57T reliable?
The price and inventory of 1.5SMC12CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC12CAHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC12CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12CAHE3/57T?
1.5SMC12CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12CAHE3/57T 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 1.5SMC12CAHE3/57T?
For technical support, including 1.5SMC12CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12CAHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC12CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12CAHE3/57T 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 1.5SMC12CAHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC12CAHE3/57T?
All 1.5SMC12CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12CAHE3/57T, 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 1.5SMC12CAHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC12CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC12CAHE3/57T Tags
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