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Vishay General Semiconductor - Diodes Division SMCJ15A-E3/9AT
- Part No.:
- SMCJ15A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15A-E3/9AT.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
SMCJ15A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage at 61.5 A peak pulse current (10/1000 µs), and 1500 W peak pulse power dissipation - optimized for protecting MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the SMCJ15A-E3/9AT datasheet, SMCJ15A-E3/9AT pinout, SMCJ15A-E3/9AT application, or SMCJ15A-E3/9AT equivalent, key selection criteria include unidirectional polarity, 16.7–18.5 V breakdown voltage range at 1 mA test current, -55 °C to +150 °C operating junction temperature, RoHS-compliant matte tin-plated leads, and AEC-Q101 qualification readiness via HE3 suffix variants.
Technical Context
The SMCJ15A-E3/9AT operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to ESD and surge events. Its low incremental surge resistance and excellent clamping ratio (VC/VWM = 1.63) ensure minimal overvoltage exposure during 10/1000 µs transients.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it meets MSL level 1 per J-STD-020 (peak reflow 260 °C) and supports automated placement. Polarity is marked by a cathode band; no marking applies to bidirectional versions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown voltage range defining turn-on threshold |
| VC @ IPPM | 24.4 V at 61.5 A - Clamped voltage under full 1500 W surge, limiting downstream stress |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 µs waveform |
| ID @ VWM | 1.0 µA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial ambient environments |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint |
Pinout & Package
SMCJ15A-E3/9AT uses the SMC (DO-214AB) package: a 2-terminal surface-mount device with cathode identified by a visible band on the body. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts while maintaining thermal performance via 8 mm² copper pads |
| Glass-passivated junction | Ensures stable avalanche characteristics and long-term reliability under repetitive surge stress |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without degradation |
| AEC-Q101 qualification path | HE3/M3 suffix variants support automotive-grade deployment; E3 suffix is commercial-grade RoHS-compliant |
| MSL Level 1 rating | Allows single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 15 V. Use Value: Limits clamped voltage to 24.4 V, preventing damage to 36 V-rated DC-DC controllers and CAN transceivers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted across sensor output and ground to absorb induced lightning surges on long cables. Use Value: Sub-ns response and 1.0 µA leakage preserve signal integrity and minimize offset error in 24-bit ADC front-ends. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage protection in 5–24 V AC/DC adapters subject to EN 61000-4-5 surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS on regulated DC output to prevent downstream regulator latch-up. Use Value: 15 V VWM aligns with common 12–19 V adapter outputs; 24.4 V VC avoids false triggering during normal ripple. | Use Scenario: Primary protection for Ethernet PHY power pins exposed to induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Unidirectional clamping device between 3.3 V/5 V supply and ground on PoE-powered line cards. Use Value: 1500 W rating handles multiple 10/1000 µs surges per IEC 61000-4-5; SMC package fits tight board spacing constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC15 | Same VWM (15 V) and VC (24.4 V), but lower PPPM (600 W); DO-214AC (SMA) package | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select only for space-constrained designs where 600 W surge margin suffices |
| 1.5SMC15A | Identical electrical specs and SMC package; same Vishay family, different revision baseline | No functional difference; legacy marking format without E3/9AT tape-and-reel coding | Drop-in replacement if sourcing flexibility or legacy BOM alignment is required |
Compared with SAC15 and 1.5SMC15A, the SMCJ15A-E3/9AT delivers higher surge robustness (1500 W vs. 600 W) and modern tape-and-reel packaging (3500 pcs/reel, 13″), while maintaining identical clamping behavior and footprint compatibility with 1.5SMC15A.
Availability
SMCJ15A-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom line card surge suppression requiring stable component supply, consistent lead-free compliance, and traceable manufacturing origin.
Supply support for SMCJ15A-E3/9AT 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 optimization.
The SMCJ series targets high-energy transient suppression in harsh environments; it was engineered to meet stringent automotive (AEC-Q101), industrial, and telecom surge immunity standards while supporting automated SMT assembly.
FAQ
What is the breakdown voltage range of the SMCJ15A-E3/9AT?
The SMCJ15A-E3/9AT has a guaranteed breakdown voltage (VBR) range of 16.7 V to 18.5 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range ensures reliable turn-on behavior across process variation and temperature, and is confirmed in Vishay's official datasheet revision 09-Jan-2024 (Document Number: 88394). The SMCJ15A-E3/9AT maintains this specification under standard test conditions (TA = 25 °C).
Is the SMCJ15A-E3/9AT suitable for automotive applications?
The SMCJ15A-E3/9AT itself is RoHS-compliant commercial-grade (E3 suffix), not AEC-Q101 qualified. However, its pin-compatible variant SMCJ15AHE3_A/I is AEC-Q101 qualified and shares identical electrical specs. Engineers selecting the SMCJ15A-E3/9AT for automotive prototypes must verify qualification status per application requirements - the SMCJ15A-E3/9AT provides the same clamping performance and thermal robustness but lacks formal automotive qualification documentation.
What does the "-E3/9AT" suffix indicate in SMCJ15A-E3/9AT?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/9AT" specifies packaging in 13-inch diameter plastic tape and reel, with 3500 units per reel. This ordering code aligns with Vishay's standardized nomenclature in Document Number 88394 and enables precise logistics tracking and SMT machine setup. The SMCJ15A-E3/9AT is fully compatible with standard SMC feeders and reflow profiles.
How does the clamping voltage of SMCJ15A-E3/9AT compare to its stand-off voltage?
The SMCJ15A-E3/9AT has a stand-off voltage (VWM) of 15 V and a maximum clamping voltage (VC) of 24.4 V at 61.5 A (10/1000 µs). This yields a clamping ratio of 1.63, indicating efficient energy diversion with minimal overvoltage overshoot. That ratio is critical for protecting 24 V-tolerant ICs - the SMCJ15A-E3/9AT ensures downstream components see less than 25 V during worst-case surges, preserving functional safety margins.
Can SMCJ15A-E3/9AT be used in bidirectional configurations?
No - the SMCJ15A-E3/9AT is strictly unidirectional, as indicated by the "A" (not "CA") suffix and cathode band marking. Bidirectional operation requires the CA-suffixed variant (e.g., SMCJ15CA), which has symmetrical breakdown in both directions and no polarity marking. Using the SMCJ15A-E3/9AT in reverse-biased AC applications risks permanent failure; always match suffix to circuit topology. The SMCJ15A-E3/9AT must be oriented with cathode toward the protected line's higher potential side.
SMCJ15A-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ15A-E3/9AT FAQ
1.How can I place an order for SMCJ15A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15A-E3/9AT 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 SMCJ15A-E3/9AT reliable?
The price and inventory of SMCJ15A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ15A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15A-E3/9AT?
SMCJ15A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15A-E3/9AT 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 SMCJ15A-E3/9AT?
For technical support, including SMCJ15A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15A-E3/9AT requirements.
6.How does Aetrix verify that SMCJ15A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ15A-E3/9AT 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 SMCJ15A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ15A-E3/9AT?
All SMCJ15A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15A-E3/9AT, 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 SMCJ15A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCJ15A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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