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Vishay General Semiconductor - Diodes Division SMCJ54CAHE3_A/H
- Part No.:
- SMCJ54CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CAHE3_A/H.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCJ54CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V standoff voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤87.1 V at 17.2 A IPPM - deployed on power rails and signal lines in automotive ECUs and industrial I/O modules.
For engineers reviewing the SMCJ54CAHE3_A/H datasheet, SMCJ54CAHE3_A/H pinout, SMCJ54CAHE3_A/H application, or SMCJ54CAHE3_A/H equivalent, key selection criteria include bidirectional surge capability, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.39), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 8 mm × 8 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector using an avalanche junction structure, responding within <1 ps to ESD and lightning-induced transients. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating interfaces.
Thermal design relies on low RθJL (15 °C/W) and moderate RθJA (75 °C/W), requiring PCB copper pad thermal management per JEDEC standard layout. The 150 °C max junction temperature and MSL Level 1 rating support reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA; defines safe working range on protected line |
| VBR min/max | 60.0 V / 66.3 V at 1 mA - guaranteed breakdown threshold window; determines minimum trigger margin vs. system overvoltage |
| VC @ IPPM | ≤87.1 V at 17.2 A - clamped voltage during 10/1000 µs surge; sets worst-case stress on downstream ICs |
| PPPM | 1500 W - peak transient energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with standard SMT pick-and-place |
Pinout & Package
SMCJ54CAHE3_A/H uses a 2-terminal SMC (DO-214AB) package with no polarity marking (bidirectional). Terminals are matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, rated for JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; current flows bidirectionally during overvoltage events - no orientation required during placement |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical mounting and heat dissipation path to PCB copper pads (8.0 mm × 8.0 mm recommended) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, RS-485), and ungrounded power domains without polarity constraints |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS sensor interfaces under extended temperature and lifetime stress |
| 1500 W peak pulse power | Supports high-energy transients per ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave (4 kV) |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during clamping - critical for protecting 5 V or 3.3 V logic interfaces downstream |
| MSL Level 1, 260 °C peak | Allows standard lead-free reflow without moisture sensitivity concerns - eliminates bake requirements pre-assembly |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontrollers and CAN transceivers from load dump and alternator ripple in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between VCC and GND, triggered only during >54 V surges. Use Value: Limits transient voltage to ≤87.1 V, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V ICs while surviving repeated 1500 W pulses. | Use Scenario: Shielding analog input channels of PLC analog I/O modules from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Bidirectional shunt protector across differential sensor inputs (e.g., 4–20 mA loop or thermocouple lines). Use Value: Symmetric clamping preserves signal integrity in AC-coupled or floating sensor paths without polarity misalignment risk. |
| Telecom Line Card Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Safeguarding Ethernet PHYs and PoE controllers on telecom line cards exposed to lightning-induced surges on RJ-45 ports. IC Role / Device Role / Timing Role: Primary-level TVS on each twisted pair, coordinated with secondary GDT or polymer PTC devices. Use Value: Fast response (<1 ps) and 1500 W rating absorb bulk surge energy before secondary protectors activate, extending system-level surge life. | Use Scenario: Adding robust ESD and cable discharge event (CDE) protection to USB 2.0 data lines in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at USB connector, clamping ±15 kV contact ESD per IEC 61000-4-2. Use Value: Low capacitance (typ. 100 pF at 0 V) avoids signal integrity degradation on 480 Mbps USB 2.0 lines while meeting automotive-grade reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CAHE3_A/H | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR/VC specs | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only) | Select when board space is constrained and surge energy is ≤400 W - verify thermal derating for ambient >75 °C |
| SMCJ54AHE3_A/H | Unidirectional version; includes cathode band marking; identical VWM/VBR/VC/PPPM but asymmetric conduction | Requires correct polarity placement; unsuitable for AC or floating circuits where reverse bias may occur | Choose only for DC rail protection with known polarity - avoid in differential or AC-coupled signal paths |
Compared with SMAJ54CAHE3_A/H and SMCJ54AHE3_A/H, the SMCJ54CAHE3_A/H uniquely delivers 1500 W bidirectional surge handling in an AEC-Q101-qualified SMC package - making it the sole option for automotive-grade, high-energy, polarity-agnostic protection without redesigning PCB layout or compromising clamping performance.
Availability
SMCJ54CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, telecom line card surge protection, and consumer USB port hardening requiring stable component supply and long-term lifecycle assurance.
Supply support for SMCJ54CAHE3_A/H 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 is engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where sustained surge immunity and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMCJ54CAHE3_A/H at its rated peak pulse current?
The SMCJ54CAHE3_A/H clamps to a maximum of 87.1 V when subjected to its rated peak pulse current of 17.2 A (10/1000 µs waveform). This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping voltage remains consistent across both polarities due to the device's bidirectional construction, ensuring predictable protection behavior regardless of transient polarity.
Is SMCJ54CAHE3_A/H suitable for automotive applications?
Yes, SMCJ54CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets rigorous stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD, and is rated for operation from –55 °C to +150 °C. Its 1500 W surge rating supports ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 compliance in engine control units, body control modules, and ADAS sensor interfaces - making SMCJ54CAHE3_A/H a validated choice for under-hood and cabin electronics.
How does the bidirectional design of SMCJ54CAHE3_A/H affect PCB layout?
The bidirectional design of SMCJ54CAHE3_A/H eliminates polarity constraints during placement - no cathode band or orientation marking is present, and both terminals are functionally identical. This simplifies PCB layout by removing the need for silkscreen polarity indicators, reducing assembly errors, and enabling direct replacement in AC-coupled or floating signal paths (e.g., CAN bus, RS-485, audio lines). Layout must still follow Vishay's recommended 8.0 mm × 8.0 mm copper pad per terminal to maintain thermal and surge performance specified in the SMCJ54CAHE3_A/H datasheet.
What is the maximum junction temperature rating for SMCJ54CAHE3_A/H?
The maximum junction temperature (TJ max) for SMCJ54CAHE3_A/H is +150 °C, as confirmed in the Vishay SMCJ5.0A–SMCJ188CA datasheet (Document Number: 88394, Revision: 09-Jan-2024). This rating allows reliable operation in high-ambient environments such as automotive engine compartments or industrial enclosures. Derating curves in Figure 2 of the SMCJ54CAHE3_A/H datasheet specify that peak pulse power must be reduced linearly above 25 °C ambient, reaching ~75 % of 1500 W at 75 °C ambient when mounted on the recommended pad layout.
Does SMCJ54CAHE3_A/H meet RoHS and halogen-free requirements?
SMCJ54CAHE3_A/H is RoHS-compliant and AEC-Q101 qualified, as indicated by its "HE3" suffix per Vishay's ordering nomenclature. It uses matte tin-plated leads and complies with JESD 201 Class 2 whisker resistance. While the base SMCJ54CAHE3_A/H is RoHS-compliant, it is not halogen-free; for halogen-free compliance, the equivalent part is SMCJ54CAHM3_A/H (suffix "HM3"). Both variants meet UL 94 V-0 flammability requirements for the molding compound, and all electrical and thermal specifications remain identical between HE3 and HM3 versions of SMCJ54CAHE3_A/H.
SMCJ54CAHE3_A/H 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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 17.2A
- 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)
SMCJ54CAHE3_A/H FAQ
1.How can I place an order for SMCJ54CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CAHE3_A/H 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 SMCJ54CAHE3_A/H reliable?
The price and inventory of SMCJ54CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ54CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CAHE3_A/H?
SMCJ54CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CAHE3_A/H 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 SMCJ54CAHE3_A/H?
For technical support, including SMCJ54CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ54CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ54CAHE3_A/H 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 SMCJ54CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ54CAHE3_A/H?
All SMCJ54CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CAHE3_A/H, 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 SMCJ54CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ54CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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