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Vishay General Semiconductor - Diodes Division SMCJ54CA-M3/9AT
- Part No.:
- SMCJ54CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ54CA-M3/9AT.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,670
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Product details
Overview
SMCJ54CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 54 V standoff voltage, 1500 W peak pulse power, and 87.1 V clamping voltage at 17.2 A peak pulse current. It protects sensitive ICs, MOSFETs, and sensor signal lines in automotive, industrial, and telecom systems against inductive switching transients and lightning-induced surges.
For engineers reviewing the SMCJ54CA-M3/9AT datasheet, SMCJ54CA-M3/9AT pinout, SMCJ54CA-M3/9AT application, or SMCJ54CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, 1500 W 10/1000 μs surge rating, 54 V working voltage, low incremental surge resistance, and halogen-free RoHS-compliant construction per M3 suffix.
Technical Context
This device operates as a voltage-clamped crowbar during transient overvoltage events, leveraging an avalanche breakdown mechanism to shunt surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
Designed for surface-mount assembly on standard PCB copper pads (8.0 mm × 8.0 mm per terminal), it delivers stable thermal performance with RθJA = 75 °C/W and junction temperature range of −55 °C to +150 °C. The glass-passivated junction enables fast response time (<1 ns) and robust reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 60.0 V / 66.3 V - Breakdown voltage range at 1 mA test current; defines turn-on threshold consistency |
| VC @ IPPM | 87.1 V - Clamped voltage at 17.2 A peak pulse current; determines maximum stress on downstream components |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; quantifies single-event surge energy absorption |
| IPPM | 17.2 A - Peak pulse current corresponding to VC; used for trace width and layout current-carrying validation |
| TJ max | +150 °C - Maximum junction temperature; sets thermal derating limits for high-ambient applications |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements on standard PCB layout |
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, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical avalanche junction; accepts surge current in either direction |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical avalanche junction; completes bidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals or floating nodes without polarity constraints |
| 1500 W 10/1000 μs surge rating | Supports IEC 61000-4-5 Level 4 (4 kV) compliance with margin when properly laid out |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental regulations for automotive and industrial end-equipment manufacturing |
| MSL Level 1, 260 °C reflow compatible | Allows single-pass lead-free reflow without moisture sensitivity concerns |
| Glass-passivated junction | Ensures stable leakage (<1 μA at VWM) and long-term reliability under thermal cycling |
Applications
| Automotive Power Distribution | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN bus transceivers and power supply inputs in body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp absorbing ±100 V transients while maintaining signal integrity on 12 V rails. Use Value: Prevents latch-up or permanent damage to transceivers during ISO 7637-2 Pulse 5a events with <1 ns response. | Use Scenario: Shielding 4–20 mA current loop analog inputs in PLC I/O modules from ESD and field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) bidirectional shunt that remains transparent during normal operation. Use Value: Maintains measurement accuracy while clamping transients up to 1500 W without degrading loop stability. |
| Telecom Line Card Protection | Consumer Power Adapter Output |
Use Scenario: Safeguarding Ethernet PHY front-end components on base station line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage surge suppressor placed before common-mode chokes and isolation transformers. Use Value: Limits induced common-mode voltage to <87.1 V, enabling downstream protection to handle residual energy. | Use Scenario: Securing USB-C PD output rails in wall adapters against hot-plug transients and cable coupling noise. IC Role / Device Role / Timing Role: Final-stage TVS across VBUS to ground, rated for repeated 10/1000 μs surges. Use Value: Survives >1000 surges at 80% of rated PPPM without parameter drift, per JEDEC JESD22-A114. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA-E3/61T | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients (IEC 61000-4-2 ±8 kV contact); not for IEC 61000-4-5 | Select when board space is constrained and surge threat level is limited to ESD-only environments. |
| SMCJ54A-M3/9AT | Unidirectional version; same VWM, VC, PPPM, but cathode-marked and asymmetric conduction | Requires polarity-aware placement; unsuitable for AC or floating nodes | Choose only for DC rails where polarity is fixed and reverse-voltage blocking is required. |
Compared with SMCJ54CA-M3/9AT, SMAJ54CA-E3/61T offers smaller size but sacrifices 73% surge energy capacity, while SMCJ54A-M3/9AT provides identical clamping performance only in unidirectional configurations-making the bidirectional SMCJ54CA-M3/9AT essential for polarity-agnostic protection.
Availability
SMCJ54CA-M3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, telecom line card protection, and consumer power adapter output requiring stable component supply and full IEC 61000-4-5 compliance support.
Supply support for SMCJ54CA-M3/9AT 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 optimization.
The SMCJ series is engineered for high-power transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where sustained surge immunity and long-term parametric stability are critical.
FAQ
What is the clamping voltage of SMCJ54CA-M3/9AT at its rated peak pulse current?
The SMCJ54CA-M3/9AT has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) of 17.2 A, measured under the standardized 10/1000 μs double-exponential surge waveform. This value ensures downstream components experience no more than 87.1 V during worst-case transient events, directly supporting system-level overvoltage tolerance design.
Is SMCJ54CA-M3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
No-SMCJ54CA-M3/9AT carries the M3 suffix (halogen-free, RoHS-compliant commercial grade) but is not AEC-Q101 qualified. For automotive-grade versions, select SMCJ54CAHM3_X (e.g., SMCJ54CAHM3A) which includes AEC-Q101 qualification, extended temperature validation, and enhanced process controls documented in Vishay's automotive product release notices.
How does the bidirectional nature of SMCJ54CA-M3/9AT affect PCB layout compared to unidirectional TVS diodes?
The bidirectional SMCJ54CA-M3/9AT eliminates polarity marking and orientation constraints during placement, simplifying automated assembly and reducing risk of misorientation-related field failures. Unlike unidirectional variants such as SMCJ54A-M3/9AT, it requires no cathode band alignment-making it ideal for AC-coupled lines, differential pairs, or floating grounds where voltage polarity reverses dynamically.
What is the maximum reverse leakage current of SMCJ54CA-M3/9AT at its standoff voltage?
At its 54 V standoff voltage (VWM), the SMCJ54CA-M3/9AT exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C, per Vishay's electrical characteristics table. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and prevents unnecessary power drain in battery-operated systems using the SMCJ54CA-M3/9AT.
Can SMCJ54CA-M3/9AT be used in parallel to increase surge current handling?
No-SMCJ54CA-M3/9AT is not characterized or recommended for parallel operation due to inherent parameter spread in VBR (60.0–66.3 V), which causes uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-rated device (e.g., SMCJ64CA-M3/9AT) or implement staged protection with upstream current-limiting impedance.
SMCJ54CA-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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-M3/9AT FAQ
1.How can I place an order for SMCJ54CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ54CA-M3/9AT 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 SMCJ54CA-M3/9AT reliable?
The price and inventory of SMCJ54CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ54CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ54CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ54CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ54CA-M3/9AT?
SMCJ54CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ54CA-M3/9AT 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 SMCJ54CA-M3/9AT?
For technical support, including SMCJ54CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ54CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ54CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ54CA-M3/9AT 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 SMCJ54CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ54CA-M3/9AT?
All SMCJ54CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ54CA-M3/9AT, 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 SMCJ54CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ54CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ54CA-M3/9AT Tags
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