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Vishay General Semiconductor - Diodes Division SMCJ13CA-E3/57T
- Part No.:
- SMCJ13CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ13CA-E3/57T.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,005
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Product details
Overview
SMCJ13CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features 13 V standoff voltage (VWM), 21.5 V maximum clamping voltage (VC) at 69.8 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), suitable for protecting automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMCJ13CA-E3/57T datasheet, SMCJ13CA-E3/57T pinout, SMCJ13CA-E3/57T application, or SMCJ13CA-E3/57T equivalent, key selection criteria include bidirectional surge capability, low clamping ratio (VC/VWM = 1.65), AEC-Q101 qualification readiness (via HE3 suffix variants), and compatibility with automated SMT assembly on 8 mm × 8 mm copper pads.
Technical Context
The SMCJ13CA-E3/57T operates as a silicon avalanche diode with symmetrical breakdown behavior in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and repeatable clamping performance across temperature (-55 °C to +150 °C).
It delivers fast response time (<1 ps) to ESD and lightning-induced transients, with low incremental surge resistance enabling effective energy diversion during 10/1000 µs surges. The device meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min/max | 14.4 V / 15.9 V at 1 mA - Verified breakdown threshold range ensuring reliable turn-on during overvoltage events. |
| VC @ IPPM | 21.5 V at 69.8 A - Clamped voltage under 1500 W transient; limits downstream IC stress to safe levels. |
| PPPM | 1500 W (10/1000 µs) - Peak surge power handling capacity for IEC 61000-4-5 Level 4 compliance. |
| IPPM | 69.8 A - Peak pulse current capability at rated clamping voltage; determines minimum trace width and pad sizing. |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on standard 8 mm × 8 mm pads; informs derating above 25 °C. |
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 compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current from either polarity; connects to protected line (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current exit point (bidirectional) | Routes clamped current to ground or return path; requires low-inductance connection to chassis or GND plane. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or differential buses (e.g., USB D+/D−, RS-485) without polarity concerns. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-ground) with appropriate PCB layout. |
| Low clamping ratio (1.65) | VC/VWM = 21.5/13 ensures minimal overvoltage exposure to downstream ICs during clamping. |
| AEC-Q101 ready (HE3 variant) | E3 suffix indicates RoHS-compliant commercial grade; HE3 variant available for automotive-grade qualification. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and microcontroller ADC input to clamp transients before signal conditioning circuitry. Use Value: Limits voltage excursion to ≤21.5 V during 100 A surge, preventing ADC saturation and latch-up in 3.3 V or 5 V MCU inputs. |
Use Scenario: Shielding RS-485 transceivers in factory automation PLCs from EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Placed across differential pair (A/B) and ground to suppress common-mode and differential-mode transients simultaneously. Use Value: Maintains bus integrity by clamping surges within 1 ns, avoiding data corruption during 4 kV IEC 61000-4-4 testing. |
| Consumer USB Port Protection | Telecom DSL Line Interface |
|
Use Scenario: Safeguarding USB 2.0 data lines in set-top boxes against human-body-model ESD (±8 kV contact discharge). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS mounted directly at USB connector to shunt ESD current before reaching PHY IC. Use Value: Junction capacitance <100 pF (typ.) preserves signal integrity up to 480 Mbps while limiting ESD voltage to <25 V at IC pins. |
Use Scenario: Protecting ADSL/VDSL line drivers in residential gateways from induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Connected between tip/ring and ground to absorb longitudinal surges while preserving DC bias and AC signal fidelity. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W without degradation, meeting GR-1089-CORE telecom requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC13CA | Same VWM (13 V) and VC (21.5 V), but lower PPPM (600 W) and smaller SMA package (DO-214AC). | Limited to lower-energy transients (IEC 61000-4-2 only); unsuitable for IEC 61000-4-5 Level 4. | Select when board space is constrained and surge threat level is limited to ESD-only environments. |
| SMCJ13A-E3/57T | Unidirectional version with identical VWM, VBR, and VC, but cathode band marking and forward conduction capability. | Requires correct polarity placement; not usable on AC or floating lines without series blocking diodes. | Choose only for DC-biased lines where polarity is fixed and forward surge current (IFSM = 200 A) matters. |
Compared with SAC13CA and SMCJ13A-E3/57T, the SMCJ13CA-E3/57T uniquely provides full bidirectional 1500 W surge protection in the robust SMC package, making it the optimal choice for automotive, industrial, and telecom applications demanding high-energy transient immunity without polarity constraints.
Availability
SMCJ13CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, consumer USB interfaces, and telecom DSL line protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ13CA-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, MOSFETs, and protection devices with emphasis on reliability and AEC-Q qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive, industrial, and telecom infrastructure where robustness and standardized surge ratings are critical.
FAQ
What is the clamping voltage of SMCJ13CA-E3/57T at its rated peak pulse current?
The SMCJ13CA-E3/57T has a maximum clamping voltage (VC) of 21.5 V at its rated peak pulse current (IPPM) of 69.8 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures predictable overvoltage limiting for downstream components. The SMCJ13CA-E3/57T maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMCJ13CA-E3/57T suitable for automotive applications?
The SMCJ13CA-E3/57T is RoHS-compliant and built on Vishay's AEC-Q101-qualified platform; however, the E3 suffix denotes commercial grade. For production automotive use, the HE3 suffix variant (e.g., SMCJ13CAHE3_A) must be selected to meet AEC-Q101 stress test requirements. The SMCJ13CA-E3/57T itself is commonly used in automotive prototyping and non-safety-critical subsystems where qualification is pending.
How does the bidirectional nature of SMCJ13CA-E3/57T affect PCB layout?
The SMCJ13CA-E3/57T has no polarity marking and conducts identically in both directions, simplifying layout for differential or AC-coupled lines. Unlike unidirectional TVS diodes, it eliminates orientation errors during placement and avoids the need for dual devices on symmetric buses. The SMCJ13CA-E3/57T requires symmetric, low-inductance ground connections to both terminals to maintain balanced clamping performance.
What is the thermal resistance of SMCJ13CA-E3/57T, and how does it impact power derating?
The SMCJ13CA-E3/57T 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. At ambient temperatures above 25 °C, its 6.5 W steady-state power dissipation must be linearly derated - for example, to ~4.5 W at 75 °C ambient. This derating directly affects sustained surge repetition rate and must be validated using Vishay's Fig. 2 derating curve from document 88394. The SMCJ13CA-E3/57T remains fully functional within its 150 °C TJ limit under these conditions.
Can SMCJ13CA-E3/57T replace SMCJ13A-E3/57T in an existing design?
No - the SMCJ13CA-E3/57T is bidirectional, while the SMCJ13A-E3/57T is unidirectional with a cathode band marking. Substituting them without layout review risks incorrect clamping on reverse-polarity transients or unintended forward conduction. If replacing SMCJ13A-E3/57T, verify that the protected line is truly AC-coupled or floating; otherwise, redesign the placement and grounding scheme. The SMCJ13CA-E3/57T cannot serve as a drop-in replacement without confirming system-level polarity behavior.
SMCJ13CA-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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 69.8A
- 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)
SMCJ13CA-E3/57T FAQ
1.How can I place an order for SMCJ13CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ13CA-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 SMCJ13CA-E3/57T reliable?
The price and inventory of SMCJ13CA-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 SMCJ13CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ13CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ13CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ13CA-E3/57T?
SMCJ13CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ13CA-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 SMCJ13CA-E3/57T?
For technical support, including SMCJ13CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ13CA-E3/57T requirements.
6.How does Aetrix verify that SMCJ13CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ13CA-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 SMCJ13CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ13CA-E3/57T?
All SMCJ13CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ13CA-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 SMCJ13CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ13CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ13CA-E3/57T Tags
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