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Vishay General Semiconductor - Diodes Division 1.5SMC15CAHE3/9AT
- Part No.:
- 1.5SMC15CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CAHE3/9AT.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,288
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Product details
Overview
1.5SMC15CAHE3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 15 V standoff voltage (VWM), and 21.2 V clamping voltage (VC) at 70.8 A peak pulse current. It protects sensitive signal lines and power rails in automotive and industrial electronics against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC15CAHE3/9AT datasheet, 1.5SMC15CAHE3/9AT pinout, 1.5SMC15CAHE3/9AT application, or 1.5SMC15CAHE3/9AT equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping, low incremental surge resistance, fast response time, and RoHS-compliant matte tin-plated terminals suitable for automated SMT assembly.
Technical Context
The 1.5SMC15CAHE3/9AT operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1000 Ω at 12.8 V), but triggers into low-impedance conduction when reverse voltage exceeds its 15 V standoff level, clamping transient energy to ≤21.2 V at 70.8 A. Its glass-passivated junction ensures stable breakdown behavior across temperature.
Designed for bidirectional operation, it delivers symmetrical clamping in both polarities without polarity marking, supports repetitive surges at 0.01% duty cycle, and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for protected circuit. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1 mA - Verified breakdown threshold where device transitions from high- to low-impedance state. |
| VC (Clamping Voltage) | 21.2 V at 70.8 A (10/1000 μs) - Peak voltage seen by downstream circuit during worst-case surge; critical for IC-level protection margin. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized 10/1000 μs surge waveform; enables robust protection against lightning and load dump. |
| ID (Reverse Leakage) | ≤1.0 μA at 15 V - Negligible standby current that avoids loading of low-power sensor or communication lines. |
| TJ max | 150 °C - Maximum junction temperature rating enabling reliable operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification. |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking required; symmetric structure allows identical clamping in either direction. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Not marked on device body - bidirectional operation eliminates cathode/anode distinction for layout purposes. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, RS-485, USB D+/D−) without polarity concerns. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line) surge immunity testing in industrial and automotive systems. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature, minimizing drift in critical protection thresholds. |
| MSL Level 1 rating | Permits direct placement on PCBs without dry-pack or baking, reducing manufacturing overhead in high-volume SMT lines. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended temperature and reliability compliance. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load-dump transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at sensor connector interface to clamp induced surges before reaching ADC input. Use Value: Limits voltage excursion to ≤21.2 V during 70.8 A surge, preserving sensor signal integrity and preventing microcontroller reset or damage. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs connected to long cable runs susceptible to EFT and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional TVS mounted across A/B bus lines to absorb common-mode and differential-mode transients without disrupting DC bias. Use Value: Maintains RS-485 receiver common-mode range compliance while suppressing >1500 W surges, ensuring uninterrupted communication during electrical noise events. |
| Consumer USB Port Protection | Power Supply Input Stage |
Use Scenario: Guarding USB 2.0 data lines (D+, D−) in portable medical devices against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to divert sub-100 ns ESD pulses away from PHY IC. Use Value: Delivers <1.0 μA leakage at 15 V and fast response (<1 ns), preventing signal degradation while meeting IEC 61000-4-2 ±15 kV contact discharge requirements. |
Use Scenario: Secondary-side overvoltage suppression on 12 V DC input rails of embedded controllers subjected to automotive battery transients. IC Role / Device Role / Timing Role: Standoff-rated TVS parallel to bulk capacitor to clamp sustained overvoltages (e.g., ISO 7637-2 Pulse 1/2a) before regulator input. Use Value: Withstands 1500 W surges and 200 A non-repetitive forward surge, providing fail-safe backup to primary regulation and preventing downstream MOSFET gate oxide rupture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same VWM (15 V) and VC (24.4 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 85 °C/W). | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump or industrial lightning protection. | Select when board space is constrained and surge threat level is moderate (e.g., consumer peripherals). |
| 1.5KE15CA | Same VWM (15 V) and VC (24.4 V), but axial-leaded DO-201 package; higher thermal mass but incompatible with SMT assembly. | Requires through-hole rework or hybrid assembly; not viable for fully automated production or compact PCB layouts. | Choose only for legacy repair, prototyping, or cost-sensitive non-SMT applications where reflow compatibility is not required. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CAHE3/9AT uniquely combines AEC-Q101 qualification, 1500 W surge capability, and SMC SMT packaging-enabling automotive-grade reliability without sacrificing automated manufacturability or board space efficiency.
Availability
1.5SMC15CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, consumer USB protection, and DC power input stages requiring stable component supply and full AEC-Q101 traceability.
Supply support for 1.5SMC15CAHE3/9AT 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 1.5SMC Series was engineered specifically for surface-mount transient suppression in harsh environments, emphasizing high pulse power density, AEC-Q101 compliance, and process-controlled glass passivation for consistent clamping performance.
FAQ
What is the clamping voltage of the 1.5SMC15CAHE3/9AT under a 10/1000 μs surge?
The 1.5SMC15CAHE3/9AT clamps to a maximum of 21.2 V when subjected to a 70.8 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 8 mm × 8 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5SMC15CAHE3/9AT maintains this clamping performance across its rated operating temperature range.
Is the 1.5SMC15CAHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC15CAHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets stringent requirements for temperature cycling, mechanical shock, and humidity bias, and is rated for operation from −65 °C to +150 °C. The 1.5SMC15CAHE3/9AT is commonly deployed in engine control units, body electronics, and ADAS modules where protection against load-dump and ISO 7637-2 transients is mandatory.
How does the bidirectional design of the 1.5SMC15CAHE3/9AT affect PCB layout?
The 1.5SMC15CAHE3/9AT has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. This simplifies layout for AC-coupled or floating interfaces like CAN, RS-485, or audio lines-no anode/cathode alignment is needed. The 1.5SMC15CAHE3/9AT can be placed symmetrically across differential pairs or shared between dual-rail supplies without affecting protection efficacy.
What is the maximum steady-state power dissipation of the 1.5SMC15CAHE3/9AT?
The 1.5SMC15CAHE3/9AT has a maximum steady-state power dissipation (PD) of 6.5 W at TA = 50 °C on an infinite heatsink. In typical PCB applications with standard 8 mm × 8 mm copper pads per terminal, derating applies above 25 °C ambient per Figure 2 in the datasheet. Continuous power handling remains limited by thermal resistance (RθJA = 75 °C/W), so the 1.5SMC15CAHE3/9AT is intended for transient-not steady-state-overvoltage suppression.
Does the 1.5SMC15CAHE3/9AT meet lead-free reflow requirements?
Yes, the 1.5SMC15CAHE3/9AT is RoHS-compliant and rated for lead-free reflow with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1. Its matte tin-plated terminals are solderable per J-STD-002 and JESD 22-B102, and it passes JESD 201 Class 2 whisker testing. No pre-baking or special handling is required prior to SMT assembly of the 1.5SMC15CAHE3/9AT.
1.5SMC15CAHE3/9AT 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)
1.5SMC15CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC15CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CAHE3/9AT 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 1.5SMC15CAHE3/9AT reliable?
The price and inventory of 1.5SMC15CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CAHE3/9AT?
1.5SMC15CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CAHE3/9AT 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 1.5SMC15CAHE3/9AT?
For technical support, including 1.5SMC15CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC15CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CAHE3/9AT 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 1.5SMC15CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CAHE3/9AT?
All 1.5SMC15CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CAHE3/9AT, 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 1.5SMC15CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC15CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CAHE3/9AT Tags
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