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Vishay General Semiconductor - Diodes Division SMCJ9.0CA-E3/57T
- Part No.:
- SMCJ9.0CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0CA-E3/57T.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,502
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Product details
Overview
SMCJ9.0CA-E3/57T 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 9.0 V stand-off voltage (VWM), 15.4 V maximum clamping voltage (VC) at 97.4 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (10/1000 μs waveform), commonly deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ9.0CA-E3/57T datasheet, SMCJ9.0CA-E3/57T pinout, SMCJ9.0CA-E3/57T application, or SMCJ9.0CA-E3/57T equivalent, this device is evaluated for fast-response surge suppression in bidirectional AC-coupled or floating signal paths where polarity-agnostic clamping and low incremental surge resistance are critical selection criteria.
Technical Context
The SMCJ9.0CA-E3/57T operates as a silicon avalanche diode with symmetrical breakdown behavior in both directions, enabling protection of AC signals or ungrounded differential pairs without polarity constraints. Its glass-passivated junction ensures stable leakage performance and repeatable clamping under repetitive transients.
With a 75 °C/W junction-to-ambient thermal resistance and 150 °C maximum operating junction temperature, it supports reliable operation in thermally constrained surface-mount layouts. The device meets MSL level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR min/max | 10.0 V / 11.1 V at 1.0 mA test current - Confirmed bidirectional breakdown threshold range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 15.4 V at 97.4 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to safe levels in high-energy transient events. |
| PPPM | 1500 W - Peak pulse power handling capability; supports protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges. |
| IPPM | 97.4 A - Peak surge current capacity at rated clamping voltage; enables use with low-impedance source transients. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement; compatible with automated pick-and-place and reflow. |
Pinout & Package
SMCJ9.0CA-E3/57T uses the SMC (DO-214AB) package: a molded, rectangular surface-mount case with two coplanar terminals. No polarity marking is present on bidirectional variants; both terminals are functionally identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous polarity; no fixed polarity assignment required in schematic or layout. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically symmetric to Terminal 1; enables placement across any two-point node without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled, floating, or differential signal paths without external polarity management. |
| 1500 W peak pulse power | Supports compliance with stringent automotive (ISO 7637-2) and industrial (IEC 61000-4-5) surge immunity standards. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes voltage overshoot during transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs and ICs. |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking, simplifying manufacturing logistics and reducing assembly cost. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications requiring validated reliability; SMCJ9.0CA-E3/57T is commercial-grade. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-supplied microcontroller power inputs in engine control units against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VIN and GND to clamp positive and negative transients without polarity dependency. Use Value: Limits voltage excursion to ≤15.4 V during 100 A surges, preventing brownout reset or internal regulator failure in MCU power management ICs. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems from ESD and switching noise. IC Role / Device Role / Timing Role: TVS connected differentially across signal and return lines to absorb common-mode and differential transients. Use Value: Maintains signal integrity by clamping sub-100 ns ESD events to <16 V, avoiding ADC saturation or op-amp input stage damage. |
| Telecom Line Interface Protection | Consumer USB Port ESD Suppression |
|
Use Scenario: Safeguarding RS-485 transceiver I/O pins in networked building control systems exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across A/B differential pair to suppress common-mode surges while preserving data eye integrity. Use Value: Withstands 1500 W pulses without degradation, ensuring >100,000 surge cycles in field-deployed equipment per Telcordia GR-1089-CORE. |
Use Scenario: Adding secondary-level surge protection on VBUS and D+/D− lines of USB 2.0 ports in smart home hubs subjected to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) integrated near connector to shunt 8 kV HBM ESD before reaching USB PHY. Use Value: Clamps 15 kV contact discharge to <20 V within <1 ns, meeting IEC 61000-4-2 Level 4 without signal distortion or data corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC9.0CA-TB | Same VWM (9.0 V) and VC (15.4 V), but lower PPPM (600 W); SOD-123FL package (smaller footprint, higher RθJA). | Preferred for space-constrained consumer PCBs where surge energy is limited to IEC 61000-4-2 ESD only-not suitable for ISO 7637-2 load dump. | Select SAC9.0CA-TB when board area is critical and surge threat profile excludes high-energy automotive transients. |
| SMCJ9.0A-E3/57T | Unidirectional variant with identical VWM, VBR, and VC, but cathode band marking and asymmetric conduction; same SMC package. | Required only when protecting DC-biased lines (e.g., +5 V supply) where reverse conduction must be blocked. | Choose SMCJ9.0A-E3/57T exclusively for unidirectional DC rail protection; avoid in AC or floating applications due to polarity sensitivity. |
Compared with SAC9.0CA-TB, the SMCJ9.0CA-E3/57T delivers 2.5× higher surge energy handling in the same mounting style; versus SMCJ9.0A-E3/57T, it eliminates polarity-dependent layout errors and supports universal placement across bidirectional interfaces.
Availability
SMCJ9.0CA-E3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply and full traceability.
Supply support for SMCJ9.0CA-E3/57T 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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The SMCJ series was engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure where failure modes demand proven clamping consistency and thermal robustness.
FAQ
What is the clamping voltage of the SMCJ9.0CA-E3/57T under a 10/1000 μs surge?
The SMCJ9.0CA-E3/57T clamps to a maximum of 15.4 V when subjected to its rated peak pulse current of 97.4 A using the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88394. The SMCJ9.0CA-E3/57T maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is the SMCJ9.0CA-E3/57T suitable for automotive applications?
The SMCJ9.0CA-E3/57T is RoHS-compliant and qualified to MSL Level 1, but it is a commercial-grade part (E3 suffix). For AEC-Q101-qualified automotive use, Vishay offers the SMCJ9.0CAHE3 variant (HE3 suffix). The SMCJ9.0CA-E3/57T may be used in non-safety-critical automotive subsystems where qualification is not mandated, but design-in requires explicit customer validation. The SMCJ9.0CA-E3/57T itself does not carry AEC-Q101 certification.
How does the bidirectional nature of the SMCJ9.0CA-E3/57T affect PCB layout?
The SMCJ9.0CA-E3/57T has no polarity marking and functions identically in either orientation, allowing placement across any two-node connection without regard to anode/cathode direction. This eliminates orientation errors during automated assembly and simplifies layout for AC-coupled or floating circuits such as RS-485 differential pairs or transformer-isolated power supplies. The SMCJ9.0CA-E3/57T requires only standard SMC (DO-214AB) footprints with 8.0 mm × 8.0 mm copper pads per terminal.
What is the maximum reverse leakage current of the SMCJ9.0CA-E3/57T at its stand-off voltage?
At its rated stand-off voltage of 9.0 V and ambient temperature of 25 °C, the SMCJ9.0CA-E3/57T exhibits a maximum reverse leakage current (ID) of 10 μA. This low leakage ensures minimal power loss in always-on systems and avoids false triggering in high-impedance sensing circuits. The SMCJ9.0CA-E3/57T maintains leakage below 50 μA up to 80 % of VWM, supporting stable biasing in precision analog front-ends.
Can the SMCJ9.0CA-E3/57T replace a unidirectional TVS like the SMCJ9.0A-E3/57T?
Yes, the SMCJ9.0CA-E3/57T can replace the unidirectional SMCJ9.0A-E3/57T in most applications-but only if bidirectional clamping is acceptable or required. Unlike the SMCJ9.0A-E3/57T, which blocks reverse current, the SMCJ9.0CA-E3/57T conducts in both directions above VBR. Therefore, the SMCJ9.0CA-E3/57T is not suitable for DC-biased lines where reverse conduction would disrupt circuit operation. Verify signal polarity and grounding scheme before substitution.
SMCJ9.0CA-E3/57T 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 97.4A
- 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 (SMCJ)
SMCJ9.0CA-E3/57T FAQ
1.How can I place an order for SMCJ9.0CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0CA-E3/57T 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 SMCJ9.0CA-E3/57T reliable?
The price and inventory of SMCJ9.0CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ9.0CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0CA-E3/57T?
SMCJ9.0CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0CA-E3/57T 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 SMCJ9.0CA-E3/57T?
For technical support, including SMCJ9.0CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ9.0CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0CA-E3/57T 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 SMCJ9.0CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ9.0CA-E3/57T?
All SMCJ9.0CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0CA-E3/57T, 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 SMCJ9.0CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ9.0CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0CA-E3/57T Tags
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