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Vishay General Semiconductor - Diodes Division SMCJ54CA-M3/57T
- Part No.:
- SMCJ54CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CA-M3/57T.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,473
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Product details
Overview
SMCJ54CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 54 V standoff voltage (VWM), 60.0–66.3 V breakdown range (VBR), and 1500 W peak pulse power (10/1000 μs). It clamps transients to ≤87.1 V at 17.2 A peak current and operates across -55 °C to +150 °C junction temperature.
For engineers reviewing the SMCJ54CA-M3/57T datasheet, SMCJ54CA-M3/57T pinout, SMCJ54CA-M3/57T application, or SMCJ54CA-M3/57T equivalent, this device serves as a robust, AEC-Q101-qualified (via HM3 suffix) overvoltage protector for automotive sensor lines, industrial I/O ports, and DC power rails where fast response (<1 ns), low clamping ratio, and halogen-free RoHS compliance are required.
Technical Context
The SMCJ54CA-M3/57T employs a glass-passivated silicon junction optimized for bidirectional clamping, delivering symmetrical electrical characteristics in both polarities. Its low incremental surge resistance and fast response time ensure effective suppression of ESD, lightning-induced surges, and inductive switching transients without degradation under repetitive stress.
Designed for surface-mount assembly on standard PCB copper pads (8.0 mm × 8.0 mm per terminal), it meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility and passes JESD 201 Class 2 whisker testing. The halogen-free M3 suffix confirms compliance with environmental standards while maintaining full electrical equivalence to E3-grade variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working limit for protected circuit. |
| VBR min/max | 60.0 V / 66.3 V at 1.0 mA - Confirmed breakdown threshold range; ensures reliable turn-on within tight tolerance for predictable protection timing. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamped voltage during 1500 W surge; determines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 1500 W - Peak pulse power handling (10/1000 μs waveform); supports high-energy transients common in automotive load-dump and industrial motor drives. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow processes. |
Pinout & Package
SMCJ54CA-M3/57T uses the SMC (DO-214AB) package: a two-terminal, non-polarized surface-mount case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking; terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required for bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems without failure. |
| Halogen-free & RoHS-compliant (M3) | Meets global environmental regulations including JEDEC J-STD-609A Class 1 for halogen content; suitable for green manufacturing. |
| AEC-Q101 qualification path | Base P/NHM3_X variant qualifies for automotive applications; SMCJ54CA-M3/57T shares identical die and construction with qualified versions. |
| Low clamping ratio (VC/VBR) | Ratio of 87.1 V / 60.0 V ≈ 1.45 ensures minimal overvoltage overshoot during clamping-critical for protecting 5 V or 3.3 V logic interfaces. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Ports |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector interface to shunt surge energy before reaching sensitive ASICs. Use Value: Clamps 1500 W surges to ≤87.1 V, preventing latch-up or gate oxide damage in 5 V-tolerant transceivers and ADC front-ends. | Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to inductive kickback from solenoids and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at terminal block entry point to absorb repetitive 10/1000 μs transients up to 17.2 A. Use Value: Maintains 54 V working margin while clamping fast-rising spikes below 90 V-preserving signal integrity and enabling >100,000 surge cycles. |
| DC Power Rail Protection | Telecom Line Interface |
Use Scenario: Secondary surge protection on 48 V telecom or industrial DC distribution rails upstream of DC-DC converters and PMICs. IC Role / Device Role / Timing Role: High-power crowbar element that diverts surge current away from downstream regulation stages during lightning-induced surges. Use Value: 1500 W rating handles multi-kA induced currents; thermal resistance (RθJA = 75 °C/W) allows sustained dissipation without derating at ambient ≤85 °C. | Use Scenario: Protecting Ethernet PHYs and PoE injectors against ESD and secondary lightning surges on twisted-pair data lines. IC Role / Device Role / Timing Role: Bidirectional clamp on differential pairs to suppress common-mode transients while preserving signal fidelity up to 100 MHz. Use Value: Symmetrical VBR and low capacitance (<50 pF typical) prevent signal distortion and meet IEEE 802.3af/bt surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA-E3/57T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable only for low-energy transients (e.g., ESD-only); not rated for load-dump or lightning surges. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD (±15 kV air). |
| SMCJ54A-M3/57T | Unidirectional version; includes cathode band marking; same VWM, VBR, and PPPM ratings. | Requires polarity-aware layout; used where DC bias exists and reverse conduction must be blocked. | Choose for 54 V DC power rails with known polarity; avoids unnecessary bidirectional conduction paths. |
Compared with SMAJ54CA-E3/57T and SMCJ54A-M3/57T, the SMCJ54CA-M3/57T uniquely delivers 1500 W bidirectional clamping in an industry-standard SMC footprint-making it the only option among the three qualified for automotive load-dump (ISO 7637-2) and industrial 4 kV surge (IEC 61000-4-5) compliance without derating or parallel devices.
Availability
SMCJ54CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, DC power distribution units, and telecom line interface circuits requiring stable component supply, halogen-free compliance, and AEC-Q101-aligned reliability.
Supply support for SMCJ54CA-M3/57T 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 high-reliability, automotive-qualified, and environmentally compliant components.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments-targeting automotive, industrial automation, and infrastructure applications where robustness, consistency, and long-term supply stability are mandatory.
FAQ
What is the clamping voltage of SMCJ54CA-M3/57T at its rated peak pulse current?
The SMCJ54CA-M3/57T 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 reflects the actual voltage seen by protected circuitry during worst-case surge events. The SMCJ54CA-M3/57T maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), making it suitable for under-hood automotive use.
Is SMCJ54CA-M3/57T suitable for automotive applications requiring AEC-Q101 qualification?
Yes-the SMCJ54CA-M3/57T shares identical die, packaging, and electrical specifications with the AEC-Q101-qualified HM3-suffix variants (e.g., SMCJ54CAHM3_A/H). While the M3/57T ordering code itself is commercial-grade, its construction-including glass-passivated junction, MSL Level 1 moisture sensitivity, and JESD 201 Class 2 whisker resistance-meets all baseline requirements for automotive qualification. Customers deploying SMCJ54CA-M3/57T in automotive systems should verify final qualification status with Vishay documentation for their specific lot.
How does the bidirectional design of SMCJ54CA-M3/57T affect PCB layout compared to unidirectional TVS diodes?
The bidirectional design of SMCJ54CA-M3/57T eliminates polarity constraints during placement: no cathode band marking is present, and either terminal may connect to either side of a differential or floating line. This simplifies layout for AC-coupled interfaces like RS-485, CAN, or Ethernet, removes risk of reverse installation, and avoids the need for orientation-specific footprints. Unlike unidirectional SMCJ54A-M3/57T, the SMCJ54CA-M3/57T requires no DC bias consideration-making it ideal for symmetric signal protection where voltage reversal is possible.
What is the thermal resistance and power derating behavior of SMCJ54CA-M3/57T above 25 °C ambient?
The SMCJ54CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. Its steady-state power dissipation (PD) drops linearly from 6.5 W at 50 °C ambient to zero at 150 °C junction temperature. Derating follows Figure 2 in Vishay Document 88394: at 85 °C ambient, PD is reduced to ~4.1 W. Surge capability remains unaffected by ambient temperature, as peak pulse power is defined at TA = 25 °C but validated across full operating range.
Can SMCJ54CA-M3/57T replace SMCJ54A-M3/57T in an existing design without layout changes?
No-although both share identical package (SMC), standoff voltage (54 V), and peak pulse rating (1500 W), the SMCJ54CA-M3/57T is bidirectional while SMCJ54A-M3/57T is unidirectional with a marked cathode. Substituting them requires verifying that reverse conduction is acceptable in the target circuit. In DC-biased applications (e.g., 54 V rail protection), using the bidirectional SMCJ54CA-M3/57T could allow unintended current flow during negative transients. Layout changes are not needed, but functional validation of polarity behavior is mandatory before replacement.
SMCJ54CA-M3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ54CA-M3/57T FAQ
1.How can I place an order for SMCJ54CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CA-M3/57T 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 SMCJ54CA-M3/57T reliable?
The price and inventory of SMCJ54CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ54CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CA-M3/57T?
SMCJ54CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CA-M3/57T 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 SMCJ54CA-M3/57T?
For technical support, including SMCJ54CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CA-M3/57T requirements.
6.How does Aetrix verify that SMCJ54CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ54CA-M3/57T 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 SMCJ54CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ54CA-M3/57T?
All SMCJ54CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CA-M3/57T, 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 SMCJ54CA-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ54CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54CA-M3/57T Tags
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