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Vishay General Semiconductor - Diodes Division SMCJ15CAHE3_A/I
- Part No.:
- SMCJ15CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CAHE3_A/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,296
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Product details
Overview
SMCJ15CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust ESD and surge protection on signal/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 (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCJ15CAHE3_A/I datasheet, SMCJ15CAHE3_A/I pinout, SMCJ15CAHE3_A/I application, or SMCJ15CAHE3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its breakdown voltage (VBR min = 16.7 V, max = 18.5 V at IT = 1 mA), it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response (<1 ns), while bidirectional symmetry enables use on AC-coupled or floating lines without polarity concerns.
Thermally, it sustains 150 °C maximum junction temperature and delivers 6.5 W steady-state power dissipation at TA = 50 °C. The SMC package supports MSL Level 1 handling and meets JESD201 Class 2 whisker resistance, making it suitable for high-reliability automotive PCB assembly per AEC-Q101 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Breakdown threshold tolerance; ensures consistent turn-on across production lots. |
| VC @ IPPM | 24.4 V at 61.5 A - Clamped voltage under 10/1000 μs surge; determines protected IC's maximum stress exposure. |
| PPPM | 1500 W - Peak transient energy absorption capability; validates compliance with IEC 61000-4-5 Level 4 (4 kV) |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard pad layout; informs derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum allowable junction temperature; sets upper limit for thermal design margin in engine bay applications. |
| AEC-Q101 | Qualified - Validated for automotive-grade 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); matte tin-plated leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Acts as cathode during positive transients; symmetric conduction path with cathode terminal. |
| Cathode | Transient current exit (bidirectional) | Acts as anode during negative transients; identical electrical behavior to anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating differential lines (e.g., CAN, RS-485) without external polarity management. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics where field failure risk must be minimized. |
| 1500 W peak pulse rating | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-ground) on properly laid out PCBs with 8 mm² copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices, preserving system-level timing margins. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow without baking, reducing manufacturing overhead in high-volume SMT lines. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver pins and MEMS pressure sensor outputs from load-dump and ISO 7637-2 pulses in engine control modules. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point, clamping surges before they reach signal conditioning amplifiers. Use Value: Maintains <1.0 μA leakage at 15 V VWM to avoid DC offset errors in precision sensor front-ends while surviving 1500 W transients. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers against induced lightning surges and relay switching transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on differential analog input terminals, referenced to local ground plane with minimal trace inductance. Use Value: Symmetric 24.4 V clamping limits voltage excursion across input op-amps during ±1 kV/500 A transients per IEC 61000-4-5. |
| Telecom Line Card Protection | Consumer USB Port ESD |
Use Scenario: Front-end surge suppression on Ethernet PHY magnetics or DSL line drivers exposed to telecom central office surges. IC Role / Device Role / Timing Role: Primary shunt protector on transformer secondary side, coordinated with gas discharge tube (GDT) upstream for staged protection. Use Value: 75 °C/W RθJA allows thermal stability during repeated 10/1000 μs surges in compact line card layouts with limited airflow. | Use Scenario: Board-level ESD protection for USB 2.0 data lines (D+/D−) in portable audio devices subjected to ±8 kV contact discharge (IEC 61000-4-2). IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed adjacent to USB connector, minimizing signal integrity impact. Use Value: Sub-1 ns response time clamps ESD events before USB transceiver internal structures are damaged, preserving data link reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CAHE3_A/I | Lower PPPM (400 W), smaller SMA package, higher RθJA (110 °C/W) | Not suitable for IEC 61000-4-5 Level 4; limited to low-energy ESD-only zones | Select when board space is constrained and surge threat level is ≤1 kV. |
| SMCJ15CAHM3_A/I | Identical electrical specs; halogen-free construction, same AEC-Q101 qualification | No functional difference; used where halogen-free compliance is mandated by OEM spec | Choose for automotive Tier 1 programs requiring halogen-free BOMs without performance trade-off. |
Compared with SMCJ15CAHE3_A/I, SMAJ15CAHE3_A/I offers reduced surge capacity in a smaller footprint, while SMCJ15CAHM3_A/I provides identical protection with halogen-free materials - enabling direct substitution where environmental compliance drives material selection.
Availability
SMCJ15CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, and telecom line card protection requiring stable component supply across multi-year production cycles.
Supply support for SMCJ15CAHE3_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 and application-specific optimization.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered specifically for automotive, industrial, and telecom infrastructure where AEC-Q101 validation and 1500 W surge handling are mandatory.
FAQ
What is the clamping voltage of SMCJ15CAHE3_A/I under a 10/1000 μs surge?
The SMCJ15CAHE3_A/I clamps to a maximum of 24.4 V when subjected to its rated peak pulse current of 61.5 A using the standardized 10/1000 μs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 8.0 mm × 8.0 mm copper pads), and represents the upper bound of voltage seen by protected circuitry during worst-case surge events. The SMCJ15CAHE3_A/I maintains this performance consistently due to its glass-passivated junction and tight VBR distribution.
Is SMCJ15CAHE3_A/I suitable for automotive applications?
Yes, the SMCJ15CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101 qualified construction. It meets requirements for temperature cycling, highly accelerated life testing (HALT), and ESD robustness needed in engine control units, body electronics, and ADAS sensor modules. Its bidirectional operation and 150 °C TJ max make SMCJ15CAHE3_A/I appropriate for under-hood and cabin-mounted systems.
How does the bidirectional nature of SMCJ15CAHE3_A/I affect its PCB layout?
The SMCJ15CAHE3_A/I has no polarity marking and conducts identically in both directions, eliminating orientation constraints during placement. This simplifies PCB layout for AC-coupled or floating signal paths such as CAN bus, RS-485, or audio lines - no need to verify anode/cathode alignment. Layout best practices still require short, low-inductance traces to the protected node and adequate copper pour (minimum 8.0 mm × 8.0 mm per terminal) to sustain its 1500 W rating, but polarity verification steps are removed entirely for SMCJ15CAHE3_A/I.
What is the maximum steady-state power dissipation of SMCJ15CAHE3_A/I?
The SMCJ15CAHE3_A/I has a maximum steady-state power dissipation (PD) of 6.5 W at ambient temperature TA = 50 °C, measured with infinite heatsink conditions. At higher ambient temperatures, derating applies per Figure 2 in the Vishay datasheet - for example, PD drops to ~4.3 W at TA = 70 °C. This rating reflects continuous DC or low-frequency leakage power, not transient energy; the device's primary function remains pulsed surge suppression, not sustained power handling.
Does SMCJ15CAHE3_A/I meet any industry surge immunity standards?
Yes, the SMCJ15CAHE3_A/I's 1500 W peak pulse power rating with 10/1000 μs waveform aligns with IEC 61000-4-5 Level 4 (4 kV line-to-ground, 2 kV line-to-line) when implemented with proper PCB layout - including 8.0 mm × 8.0 mm copper pads per terminal and minimized trace inductance. Its AEC-Q101 qualification further confirms compliance with automotive surge requirements per ISO 7637-2 Pulse 1, 2a, 3a/b, and 5a. The SMCJ15CAHE3_A/I is not certified to UL 497B as a standalone protector but is recognized under UL file E136766 for both uni- and bidirectional configurations.
SMCJ15CAHE3_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:
- -
- 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_A/I FAQ
1.How can I place an order for SMCJ15CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CAHE3_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 SMCJ15CAHE3_A/I reliable?
The price and inventory of SMCJ15CAHE3_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 SMCJ15CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ15CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CAHE3_A/I?
SMCJ15CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CAHE3_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 SMCJ15CAHE3_A/I?
For technical support, including SMCJ15CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ15CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ15CAHE3_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 SMCJ15CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ15CAHE3_A/I?
All SMCJ15CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CAHE3_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 SMCJ15CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ15CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CAHE3_A/I Tags
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