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Vishay General Semiconductor - Diodes Division SMCJ54CAHE3/9AT
- Part No.:
- SMCJ54CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CAHE3/9AT.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,906
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Product details
Overview
SMCJ54CAHE3/9AT 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 range (VBR), 1500 W peak pulse power (10/1000 μs), clamping voltage of 87.1 V at 17.2 A, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the SMCJ54CAHE3/9AT datasheet, SMCJ54CAHE3/9AT pinout, SMCJ54CAHE3/9AT application, or SMCJ54CAHE3/9AT equivalent, this AEC-Q101 qualified, RoHS-compliant TVS diode supports automotive-grade surge immunity, industrial I/O line protection, and high-reliability DC power rail clamping where low clamping ratio and fast response (<1 ns) are critical.
Technical Context
The SMCJ54CAHE3/9AT implements a silicon avalanche diode structure with glass-passivated junction, enabling bidirectional clamping without polarity dependence. Its 1500 W peak pulse rating is validated under standardized 10/1000 μs waveform per ANSI/IEEE C62.35, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W.
Designed for surface-mount automated placement, it meets MSL Level 1 (J-STD-020), 260 °C reflow peak, and JESD201 Class 2 whisker resistance. The device exhibits 0.104 %/°C temperature coefficient of VBR, ensuring stable clamping across wide temperature ranges in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 54 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown Voltage) | 60.0–66.3 V at 1.0 mA - Confirmed avalanche onset range defining reliable triggering threshold |
| VC (Clamping Voltage) | 87.1 V at 17.2 A (10/1000 μs) - Actual voltage seen by protected circuit during worst-case surge |
| PPPM (Peak Pulse Power) | 1500 W - Sustained energy absorption capability for transient suppression per standard waveform |
| IPPM (Peak Pulse Current) | 17.2 A - Maximum surge current the device safely diverts without failure |
| TJ Range | –55 °C to +150 °C - Full operational junction temperature envelope supporting under-hood automotive use |
| Package | SMC (DO-214AB) - Industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
SMCJ54CAHE3/9AT uses the SMC (DO-214AB) package: a 2-terminal, non-polarized surface-mount case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Bidirectional construction means no cathode/anode marking; both terminals are functionally identical for transient conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Conduction Path (Bidirectional) | Either terminal accepts surge current in either direction; no polarity dependency in circuit layout |
| Terminal 2 | Transient Conduction Path (Bidirectional) | Completes symmetrical clamping path; enables single-device protection of AC or floating DC lines |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity on 50 Ω source impedance lines |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes stress on downstream ICs by limiting let-through voltage during transients |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking, reducing manufacturing overhead in high-volume SMT lines |
| Glass-passivated junction | Ensures long-term reliability and stable electrical parameters under thermal cycling and humidity exposure |
Applications
| Automotive Power Line 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: Bidirectional TVS clamping element placed directly at connector entry point. Use Value: Absorbs 1500 W surges while holding clamped voltage below 87.1 V, preventing damage to microcontrollers and CAN transceivers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance transient shunt across differential signal pair or single-ended output. Use Value: Sub-nanosecond response ensures clamping occurs before sensitive op-amps or ADC inputs saturate or latch up. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
Use Scenario: Safeguarding 48 V PoE-powered equipment front-end from lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC-DC converter input. Use Value: Withstands repeated 10/1000 μs transients up to 17.2 A without degradation, maintaining system uptime. | Use Scenario: Hardening 5 V/9 V/12 V wall adapter inputs in smart home hubs and portable chargers. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between input jack and bulk capacitor. Use Value: 54 V VWM allows safe operation across common adapter tolerances while clamping >80 V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CAHE3/57T | Lower PPPM (600 W), same VWM/VBR, SMB (DO-214AA) package | Reduced surge handling; suitable only for lower-energy threats (IEC 61000-4-2 ESD, not full lightning) | Select when board space is constrained and surge requirements are ≤600 W |
| SMCJ54AHE3/9AT | Unidirectional version; identical VWM, VBR, PPPM, but requires correct polarity orientation | Applicable only in DC circuits with defined ground reference; cannot protect AC or floating signals | Choose only when polarity is fixed and cost-per-watt optimization is prioritized |
Compared with SMBJ54CAHE3/57T and SMCJ54AHE3/9AT, the SMCJ54CAHE3/9AT delivers higher surge resilience in a polarity-agnostic form factor-critical for protecting bidirectional communication lines, ungrounded sensors, and automotive subsystems where voltage reversal may occur during fault conditions.
Availability
SMCJ54CAHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controller (PLC) I/O modules, and telecom power supply designs requiring stable component supply, AEC-Q101 compliance, and repeatable surge performance.
Supply support for SMCJ54CAHE3/9AT 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 validation.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure where sustained 1500 W surge handling and AEC-Q101 qualification are mandatory design requirements.
FAQ
What does the "CA" suffix indicate in SMCJ54CAHE3/9AT?
The "CA" suffix in SMCJ54CAHE3/9AT denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SMCJ54A), it has no cathode marking and functions identically regardless of voltage polarity-ideal for protecting AC-coupled lines, differential buses, or floating DC rails where reverse voltage events may occur.
Is SMCJ54CAHE3/9AT AEC-Q101 qualified?
Yes, SMCJ54CAHE3/9AT is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which explicitly indicates RoHS-compliant and AEC-Q101 qualified construction. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and surge endurance-making SMCJ54CAHE3/9AT suitable for under-hood automotive applications including body control modules and infotainment power supplies.
What is the clamping voltage of SMCJ54CAHE3/9AT at its rated peak pulse current?
The clamping voltage (VC) of SMCJ54CAHE3/9AT is 87.1 V at its rated peak pulse current (IPPM) of 17.2 A, measured under the standardized 10/1000 μs double-exponential waveform. This value represents the maximum voltage imposed on the protected circuit during a full-rated surge event and is critical for ensuring downstream components remain within their absolute maximum ratings.
Can SMCJ54CAHE3/9AT be used in place of a unidirectional TVS like SMCJ54AHE3/9AT?
SMCJ54CAHE3/9AT can replace SMCJ54AHE3/9AT only if polarity independence is required and the circuit does not rely on forward conduction behavior. While both share identical VWM, VBR, and PPPM, the unidirectional version conducts forward current (VF = 3.5 V at 100 A) and must be oriented correctly. SMCJ54CAHE3/9AT offers no forward conduction path and should not be used where DC forward bias or rectification is needed.
What PCB layout guidance applies to SMCJ54CAHE3/9AT for optimal thermal and surge performance?
For optimal performance, mount SMCJ54CAHE3/9AT on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Vishay's datasheet. Avoid narrow traces between the device and protected node; use short, wide copper pours to minimize inductance and ensure rapid energy dissipation. Thermal vias under pads improve heat transfer, especially in high-ambient environments where derating above 25 °C applies per Figure 2 in document 88394.
SMCJ54CAHE3/9AT 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:
- -
- 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)
SMCJ54CAHE3/9AT FAQ
1.How can I place an order for SMCJ54CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CAHE3/9AT 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 SMCJ54CAHE3/9AT reliable?
The price and inventory of SMCJ54CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ54CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CAHE3/9AT?
SMCJ54CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CAHE3/9AT 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 SMCJ54CAHE3/9AT?
For technical support, including SMCJ54CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ54CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ54CAHE3/9AT 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 SMCJ54CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ54CAHE3/9AT?
All SMCJ54CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CAHE3/9AT, 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 SMCJ54CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ54CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54CAHE3/9AT Tags
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