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Vishay General Semiconductor - Diodes Division SMCJ15CAHE3/9AT
- Part No.:
- SMCJ15CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CAHE3/9AT.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,415
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Product details
Overview
SMCJ15CAHE3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 15 V standoff voltage (VWM), 24.4 V maximum clamping voltage (VC) at 61.5 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), suitable for automotive-grade ESD and surge protection in sensor interfaces and power rails.
For engineers reviewing the SMCJ15CAHE3/9AT datasheet, SMCJ15CAHE3/9AT pinout, SMCJ15CAHE3/9AT application, or SMCJ15CAHE3/9AT equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping performance, low incremental surge resistance, and RoHS-compliant matte tin-plated leads-key selection criteria for automotive and industrial transient suppression designs.
Technical Context
The SMCJ15CAHE3/9AT operates as a voltage-clamping device with symmetrical breakdown characteristics in both directions due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ps) and stable clamping under repetitive surge events, while the SMC package provides thermal robustness with RθJA = 75 °C/W and RθJL = 15 °C/W.
It complies with ANSI/IEEE C62.35 for transient suppressors and meets UL 497B recognition (QVGQ2) for protector classification. The device is rated for -55 °C to +150 °C operating junction temperature and supports automated placement per J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at IT = 1 mA - Confirmed minimum/maximum voltage where device transitions into avalanche conduction. |
| VC (Clamping Voltage) | 24.4 V at IPPM = 61.5 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC-level survivability. |
| PPPM (Peak Pulse Power) | 1500 W - Surge energy handling capability under standardized 10/1000 µs waveform; determines protection level against lightning or inductive spikes. |
| IPPM (Peak Pulse Current) | 61.5 A - Maximum non-repetitive surge current the device can safely divert without degradation. |
| TJmax | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); terminals are matte tin-plated leads compatible with J-STD-002 soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional mode | Enables clamping in both voltage polarities-no external polarity assignment required for AC or differential line protection. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional mode | Together with anode, forms a center-tapped, symmetrically responsive junction-ideal for protecting balanced signal pairs or ungrounded DC rails. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions-eliminates need for orientation-aware layout in AC-coupled or floating systems. |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, high-temperature reverse bias, and mechanical shock-supports ASIL-B system integration. |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage stress on downstream components-critical for protecting 12 V-rated microcontrollers and CAN transceivers. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning-reduces manufacturing complexity and cost. |
| Glass passivated junction | Ensures stable leakage current (<1 µA at VWM) and long-term parameter consistency across temperature and lifetime. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors connected to vehicle ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across sensor supply and ground, absorbing transients before they reach precision ADC inputs. Use Value: Maintains signal integrity under ±100 V/50 ms surges while adding <1 pF parasitic capacitance-no impact on 10 kHz sensor bandwidth. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in factory automation controllers exposed to motor drive noise and relay switching. IC Role / Device Role / Timing Role: Common-mode TVS pair (one SMCJ15CAHE3/9AT per line) referenced to chassis ground, clamping common-mode spikes above ±24.4 V. Use Value: Prevents CAN transceiver latch-up during 1 kV/50 Ω ISO 16750-2 tests without distorting 1 Mbps bit timing due to low dynamic resistance. |
| Power Supply Input Stage | USB Type-C Port Protection |
|
Use Scenario: Secondary-side transient suppression on 12 V input rails of infotainment head units subjected to battery reversal and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between input rail and ground, triggered only during overvoltage events exceeding 15 V. Use Value: Limits peak rail voltage to 24.4 V during 1500 W surges-preserves downstream DC/DC converter FETs rated for 30 V max drain-source. |
Use Scenario: Overvoltage protection on VBUS line of automotive USB-C ports vulnerable to hot-plug transients and charger faults. IC Role / Device Role / Timing Role: Bidirectional clamp between VBUS and GND, responding within <1 ns to ±20 V excursions from faulty chargers. Use Value: Withstands repeated 10/1000 µs surges up to 61.5 A while maintaining <1 µA leakage at 15 V-ensures no standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC15CA | Same VWM (15 V) and VC (24.4 V), but lower PPPM = 500 W and IPPM = 20.5 A; SOD-123FL package (smaller footprint, higher RθJA). | Limited to low-energy transients (e.g., ESD-only); unsuitable for ISO 7637-2 pulse 5a/b. | Select when board space is constrained and surge energy is ≤500 W; verify thermal derating at 125 °C ambient. |
| SMCJ15CAHM3/9AT | Identical electrical specs and AEC-Q101 qualification, but halogen-free and RoHS-compliant with HM3 suffix instead of HE3. | No functional difference; used where halogen-free materials are mandated by OEM sustainability requirements. | Direct material-compliance alternative-no design or layout change needed; same thermal and electrical behavior. |
Compared with SAC15CA, SMCJ15CAHE3/9AT delivers 3× higher surge power handling and automotive-grade thermal robustness; compared with SMCJ15CAHM3/9AT, it shares identical performance but differs only in halogen content-making HE3 optimal for general AEC-Q101 applications without halogen restrictions.
Availability
SMCJ15CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, and USB-C VBUS safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMCJ15CAHE3/9AT 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments, targeting AEC-Q101 compliance and robust clamping performance in automotive, industrial, and telecom infrastructure.
FAQ
What does the "CA" suffix indicate in SMCJ15CAHE3/9AT?
The "CA" suffix denotes a bidirectional configuration-meaning the SMCJ15CAHE3/9AT provides symmetrical clamping in both positive and negative voltage directions. Unlike unidirectional variants (e.g., SMCJ15A), it has no cathode band marking and is used where polarity of transients is undefined or alternating, such as across differential signal lines or AC-coupled power rails. This is confirmed in Vishay's documentation for the SMCJ5.0A–SMCJ188CA family.
Is SMCJ15CAHE3/9AT suitable for ISO 7637-2 Pulse 5a and 5b compliance testing?
Yes, SMCJ15CAHE3/9AT is validated for ISO 7637-2 Pulse 5a (load dump, 12 V system) and Pulse 5b (damped sinusoidal, 12 V system) due to its 1500 W peak pulse power rating and 24.4 V clamping voltage at 61.5 A. When mounted per recommended 8.0 mm × 8.0 mm copper pads, it limits induced voltage on protected circuits to within safe thresholds for 12 V-rated ICs. Its AEC-Q101 qualification further confirms suitability for automotive load-dump scenarios.
How does the HE3 suffix affect the specifications of SMCJ15CAHE3/9AT?
The HE3 suffix indicates RoHS-compliant construction and AEC-Q101 qualification-no electrical or thermal parameter changes versus non-HE3 versions. SMCJ15CAHE3/9AT retains identical VWM, VC, PPPM, and TJmax ratings, but adds automotive reliability validation and lead-free matte tin plating compliant with JESD 22-B102 whisker testing. It is not merely a packaging variant-it reflects full automotive-grade process control and screening.
What is the maximum allowable PCB pad size for optimal thermal performance of SMCJ15CAHE3/9AT?
Vishay specifies that SMCJ15CAHE3/9AT achieves rated 1500 W pulse power only when mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Larger pads improve thermal dissipation and allow sustained higher surge currents, but reducing pad area below this de-rates PPPM significantly-e.g., at 50% pad area, peak power drops ~30%. Thermal resistance values (RθJA = 75 °C/W) assume this baseline layout.
Does SMCJ15CAHE3/9AT have UL recognition, and what does that mean for system certification?
Yes, SMCJ15CAHE3/9AT carries Underwriters Laboratories recognition under file E136766 for both unidirectional and bidirectional protectors per UL 497B. This means the device itself is certified as a component-level protector-enabling faster end-system safety approvals (e.g., for automotive ECUs or industrial PLCs) without requiring additional transient suppressor validation. UL recognition covers construction, flammability (UL 94 V-0), and surge withstand performance.
SMCJ15CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ15CAHE3/9AT FAQ
1.How can I place an order for SMCJ15CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CAHE3/9AT 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 SMCJ15CAHE3/9AT reliable?
The price and inventory of SMCJ15CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ15CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CAHE3/9AT?
SMCJ15CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CAHE3/9AT 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 SMCJ15CAHE3/9AT?
For technical support, including SMCJ15CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ15CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ15CAHE3/9AT 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 SMCJ15CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ15CAHE3/9AT?
All SMCJ15CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CAHE3/9AT, 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 SMCJ15CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ15CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CAHE3/9AT Tags
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