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Vishay General Semiconductor - Diodes Division SMCJ15AHE3_A/I
- Part No.:
- SMCJ15AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15AHE3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,308
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Product details
Overview
SMCJ15AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails 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 rating - enabling reliable surge suppression in automotive and industrial control systems.
For engineers reviewing the SMCJ15AHE3_A/I datasheet, SMCJ15AHE3_A/I pinout, SMCJ15AHE3_A/I application, or SMCJ15AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, low 0.088 %/°C VBR temperature coefficient, 1.0 μA max reverse leakage at VWM, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 15 V and rapidly transitions to low-impedance conduction above its 16.7–18.5 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns), while the unidirectional polarity (cathode-banded) supports DC-biased protection paths without reverse conduction.
The SMCJ15AHE3_A/I is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). Its thermal resistance (RθJA = 75 °C/W) and RθJL = 15 °C/W support operation under repetitive surge conditions when mounted per recommended pad layout, and its 200 A IFSM rating allows handling of 8.3 ms half-sine surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail protection threshold. |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown range ensuring predictable turn-on during transients. |
| VC @ IPPM | 24.4 V at 61.5 A (10/1000 μs) - Clamping voltage limiting downstream component stress during worst-case surge. |
| PPPM | 1500 W - Peak pulse power handling capacity for standardized lightning/surge immunity testing (IEC 61000-4-5). |
| ID @ VWM | ≤1.0 μA - Ultra-low leakage preserves battery life and signal integrity in always-on circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures. |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and matte tin-plated leads. |
Pinout & Package
SMCJ15AHE3_A/I uses the SMC (DO-214AB) package: a rectangular surface-mount case with two terminals, cathode identified by a band. Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal per Vishay's derating guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop during positive transients. |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., 12 V rail); conducts when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per JESD22 standards. |
| Glass passivated junction | Ensures consistent avalanche behavior across production lots and long-term stability under repeated surge events. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced damage or popcorn effect. |
| Low incremental surge resistance | Enables tighter clamping (24.4 V VC) at high currents, reducing voltage overshoot seen by protected ICs. |
| RoHS-compliant & halogen-free option available | HE3 suffix denotes RoHS compliance; HM3 variant adds halogen-free molding compound for stringent environmental requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery feed and LDO input. Use Value: Limits transient voltage to ≤24.4 V, preventing latch-up or damage to 3.3 V/5 V microcontrollers downstream. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O (CAN, LIN) in factory automation sensors. IC Role / Device Role / Timing Role: Point-of-entry protection on sensor PCBs exposed to ESD and inductive switching noise. Use Value: Sub-1 ns response and 1.0 μA leakage preserve signal accuracy while meeting IEC 61000-4-2 Level 4 (±15 kV contact). |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
Use Scenario: Securing 48 V PoE-powered equipment inputs against surges induced by cable coupling or lightning induction. IC Role / Device Role / Timing Role: Primary TVS on secondary-side DC input before DC-DC converter stage. Use Value: 1500 W PPPM rating sustains multiple 10/1000 μs surges per IEC 61000-4-5 Ed. 3, Class B immunity. | Use Scenario: Overvoltage guard on 5 V USB-C or barrel jack inputs in smart home hubs and portable audio devices. IC Role / Device Role / Timing Role: First-line defense against misconnected adapters and hot-plug transients. Use Value: Low 15 V VWM aligns with USB PD 5 V profiles; compact SMC package enables placement near connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC15 | Same VWM (15 V) and PPPM (1500 W), but in smaller SMA package (DO-214AC); lower IPPM (52.5 A) and higher VC (27.7 V). | Limited to lower-energy transients; less suitable for automotive load dump where peak current exceeds 52.5 A. | Select SAC15 only if board space is constrained and surge energy is ≤100 mJ. |
| 1.5KE15A | Through-hole DO-201 package; identical VWM (15 V), VBR (16.7–18.5 V), and VC (24.4 V), but lower thermal mass and no AEC-Q101 qualification. | Not suitable for automated SMT production or automotive under-hood use due to packaging and qualification gap. | Choose 1.5KE15A only for prototyping or non-automotive through-hole designs requiring legacy compatibility. |
Compared with SAC15 and 1.5KE15A, the SMCJ15AHE3_A/I delivers superior surge current handling (61.5 A vs. 52.5 A / unspecified), AEC-Q101 validation for automotive deployment, and optimized SMT manufacturability - making it the preferred choice for volume production in harsh-environment electronics.
Availability
SMCJ15AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, telecom power supplies, and consumer USB-powered devices requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCJ15AHE3_A/I 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 specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where robustness and repeatable clamping are critical.
FAQ
What is the clamping voltage of the SMCJ15AHE3_A/I under standard surge conditions?
The SMCJ15AHE3_A/I has a maximum clamping voltage (VC) of 24.4 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 61.5 A. This value is measured per JEDEC standards and ensures protected circuitry sees no more than 24.4 V during surge events. The SMCJ15AHE3_A/I maintains this clamping performance across its specified operating temperature range of -55 °C to +150 °C.
Is the SMCJ15AHE3_A/I suitable for automotive applications?
Yes, the SMCJ15AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets stress test requirements including temperature cycling, high-temperature operating life, and mechanical shock. Its 150 °C maximum junction temperature, MSL Level 1 reflow rating, and validated performance under ISO 7637-2 load dump conditions make the SMCJ15AHE3_A/I appropriate for engine control units, body electronics, and ADAS power domains.
How does the SMCJ15AHE3_A/I differ from bidirectional variants like SMCJ15CA?
The SMCJ15AHE3_A/I is unidirectional, meaning it conducts only when the cathode is positive relative to the anode - ideal for DC rail protection. In contrast, SMCJ15CA is bidirectional and symmetrical, conducting during both polarities - suited for AC lines or data buses like RS-485. The SMCJ15AHE3_A/I has a cathode band marking; SMCJ15CA has no polarity marking. Their VWM, VBR, and VC values are identical, but conduction behavior and application context differ fundamentally.
What is the reverse leakage current specification for the SMCJ15AHE3_A/I at its stand-off voltage?
The SMCJ15AHE3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 15 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage minimizes quiescent power loss in battery-backed systems and prevents signal distortion in precision analog interfaces. Leakage remains below 5 μA up to 125 °C, as confirmed by Vishay's thermal derating curves in Document 88394.
Does the SMCJ15AHE3_A/I require heatsinking for continuous operation?
No external heatsink is required for the SMCJ15AHE3_A/I under normal standby or low-duty-cycle surge conditions. Its 6.5 W power dissipation rating (PD) at TA = 50 °C assumes mounting on 0.31″ × 0.31″ copper pads - sufficient for typical transient suppression duty cycles. However, for repetitive surges exceeding 1 Hz or ambient temperatures above 70 °C, thermal simulation using its RθJA = 75 °C/W and RθJL = 15 °C/W values is recommended to ensure TJ stays within the 150 °C limit.
SMCJ15AHE3_A/I 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:
- -
- 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_A/I FAQ
1.How can I place an order for SMCJ15AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15AHE3_A/I 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_A/I reliable?
The price and inventory of SMCJ15AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ15AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ15AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15AHE3_A/I?
SMCJ15AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15AHE3_A/I 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_A/I?
For technical support, including SMCJ15AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ15AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ15AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ15AHE3_A/I?
All SMCJ15AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for SMCJ15AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15AHE3_A/I Tags
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