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Vishay General Semiconductor - Diodes Division SMCJ15AHE3/9AT
- Part No.:
- SMCJ15AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15AHE3/9AT.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,601
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Product details
Overview
SMCJ15AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, featuring 15 V standoff voltage (VWM), 24.4 V clamping voltage (VC) at 61.5 A peak pulse current, and 1500 W peak pulse power rating for 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial power rails.
For engineers reviewing the SMCJ15AHE3/9AT datasheet, SMCJ15AHE3/9AT pinout, SMCJ15AHE3/9AT application, or SMCJ15AHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 1.0 μA max reverse leakage at VWM, 16.7–18.5 V breakdown range, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ15AHE3/9AT operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to clamp transient overvoltages before downstream components are damaged. Its unidirectional configuration enables integration into DC power rails where polarity is fixed and cathode-biased protection is required.
Designed for high-energy surge immunity per IEC 61000-4-5 (Level 4), it sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) and maintains thermal stability with RθJA = 75 °C/W and maximum junction temperature of +150 °C under derated conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V - Breakdown occurs within this range at 1.0 mA test current, defining turn-on threshold |
| VC @ IPPM | 24.4 V - Clamped voltage across device during 61.5 A 10/1000 μs surge, limiting stress on protected circuit |
| PPPM | 1500 W - Peak transient power dissipation capability, enabling robust protection against lightning-induced surges |
| IPPM | 61.5 A - Maximum non-repetitive peak pulse current supported with defined waveform and mounting |
| ID @ VWM | 1.0 μA - Ultra-low reverse leakage ensures minimal standby power loss in battery-powered systems |
| TJ max | +150 °C - Maximum junction temperature supports operation in under-hood automotive environments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side (cathode-biased) | Connected to protected line; conducts only when reverse voltage exceeds VBR |
| Cathode | Ground/Reference side | Connected to system ground or low-impedance return path; defines unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Glass-passivated junction | Ensures stable electrical characteristics and long-term reliability under thermal cycling |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during surge events, improving system-level robustness |
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-ground) in properly designed layouts |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges above 15 V. Use Value: Limits transient voltage to ≤24.4 V during 61.5 A surges, preventing damage to 36 V-rated power management ICs. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt induced ESD and inductive kickback away from ADC front-end. Use Value: 1.0 μA leakage preserves signal integrity in high-impedance sensor circuits; 24.4 V clamping prevents ADC saturation. |
| DC Motor Drive Protection | Telecom Power Supply Input |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in HVAC actuators. IC Role / Device Role / Timing Role: Unidirectional TVS connected across motor terminals to absorb bidirectional energy via freewheeling path. Use Value: 200 A IFSM rating handles repetitive commutation surges; 1500 W PPPM withstands worst-case stall conditions. | Use Scenario: Front-end surge suppression for 48 V telecom rectifier modules exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary TVS stage in multi-stage protection network, clamping line-to-ground transients before downstream MOVs. Use Value: 16.7–18.5 V VBR provides margin above 48 V nominal while maintaining fast response to sub-microsecond threats. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A-E3/61T | Lower PPPM (400 W), smaller SMA package, same VWM/VC specs | Not suitable for high-energy surges; limited to consumer-grade I/O protection | Select when space-constrained and surge threat level is ≤1 kV IEC 61000-4-2 |
| SMCJ15CAHE3/9AT | Bidirectional variant; identical VWM, VBR, VC, and PPPM but symmetrical clamping | Required for AC-coupled or polarity-agnostic signal lines (e.g., RS-485, CAN) | Choose for differential bus protection where reverse polarity transients must also be suppressed |
Compared with SMAJ15A-E3/61T and SMCJ15CAHE3/9AT, the SMCJ15AHE3/9AT delivers higher surge handling (1500 W vs. 400 W) and automotive qualification-making it optimal for under-hood power rail protection where energy levels and reliability requirements exceed consumer-grade alternatives.
Availability
SMCJ15AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and DC motor drive circuits requiring stable component supply with AEC-Q101 compliance and full traceability.
Supply support for SMCJ15AHE3/9AT 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, efficiency, and application-specific performance.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where failure tolerance and long-term stability are critical.
FAQ
What is the clamping voltage of the SMCJ15AHE3/9AT under maximum rated surge current?
The SMCJ15AHE3/9AT has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 61.5 A using a 10/1000 μs waveform. This value is measured under standardized test conditions with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines, ensuring repeatable performance validation for circuit designers specifying overvoltage protection margins.
Is the SMCJ15AHE3/9AT qualified for automotive applications?
Yes, the SMCJ15AHE3/9AT carries AEC-Q101 qualification, confirmed by Vishay's documentation and ordering code suffix "HE3". This certification validates its suitability for automotive use cases including engine control modules, body electronics, and ADAS power supplies-covering requirements for temperature cycling, humidity resistance, mechanical shock, and long-term reliability under extended operational life cycles.
How does the SMCJ15AHE3/9AT differ from the bidirectional SMCJ15CAHE3/9AT?
The SMCJ15AHE3/9AT is unidirectional with cathode marking and clamps only positive transients relative to ground, whereas the SMCJ15CAHE3/9AT is bidirectional and suppresses surges of either polarity. Both share identical VWM (15 V), VBR, VC, and PPPM (1500 W), but the unidirectional version offers lower leakage (1.0 μA vs. 2.0 μA for CA variants at VWM) and is preferred for DC power rail protection.
What is the thermal resistance of the SMCJ15AHE3/9AT, and how does it affect PCB layout?
The SMCJ15AHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended pad layout. To maintain safe junction temperatures during repeated surge events, designers must use ≥8.0 mm × 8.0 mm copper pads per terminal and consider thermal vias or internal planes-especially in high-ambient environments like automotive under-hood applications where TA may exceed 85 °C.
Can the SMCJ15AHE3/9AT be used in place of older P6KE15A through-hole TVS diodes?
The SMCJ15AHE3/9AT is not a direct drop-in replacement for P6KE15A due to package (SMC vs. DO-15), mounting method (SMT vs. through-hole), and thermal profile differences. While both share similar electrical specs (VWM = 15 V, VC ≈ 24.4 V), the SMCJ15AHE3/9AT requires revised PCB layout, reflow profiling, and thermal validation-but offers superior surge handling (1500 W vs. 600 W) and AEC-Q101 qualification absent in legacy P6KE series.
SMCJ15AHE3/9AT 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ15AHE3/9AT FAQ
1.How can I place an order for SMCJ15AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15AHE3/9AT 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 SMCJ15AHE3/9AT reliable?
The price and inventory of SMCJ15AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ15AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15AHE3/9AT?
SMCJ15AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15AHE3/9AT 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 SMCJ15AHE3/9AT?
For technical support, including SMCJ15AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15AHE3/9AT requirements.
6.How does Aetrix verify that SMCJ15AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ15AHE3/9AT 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 SMCJ15AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ15AHE3/9AT?
All SMCJ15AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15AHE3/9AT, 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 SMCJ15AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ15AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15AHE3/9AT Tags
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