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Vishay General Semiconductor - Diodes Division SMAJ13C-E3/5A
- Part No.:
- SMAJ13C-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13C-E3/5A.pdf
- Description:
- TVS DIODE 13VWM 23.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,390
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Product details
Overview
SMAJ13C-E3/5A from Vishay General Semiconductor is a bi-directional surface-mount Transient Voltage Suppressor (TVS) in DO-214AC (SMA) package, designed for clamping voltage transients on signal or power lines. It features a 13 V stand-off voltage (VWM), 23.8 V maximum clamping voltage (VC) at 16.8 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform), making it suitable for protecting MOSFETs and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ13C-E3/5A datasheet, SMAJ13C-E3/5A pinout, SMAJ13C-E3/5A application, or SMAJ13C-E3/5A equivalent, this page provides verified electrical parameters, bi-directional TVS functionality, DO-214AC mechanical data, clamping performance under 10/1000 µs surge, and RoHS-compliant commercial-grade sourcing details.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities with no polarity marking, enabling protection of AC-coupled or differential signal lines without orientation constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at VWM), while MSL Level 1 moisture sensitivity supports standard SMT reflow up to 260 °C peak.
The device delivers 400 W peak pulse power capability below 78 V (derated to 300 W above), with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W - critical for board-level thermal design when mounted on 5.0 × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal bus protection. |
| VC @ IPPM | 23.8 V - Clamped voltage during 16.8 A 10/1000 µs surge; limits downstream IC stress to sub-24 V during lightning or ESD events. |
| IPPM | 16.8 A - Peak surge current handled at rated clamping voltage; determines minimum trace width and PCB copper area required. |
| PPPM | 400 W - Peak pulse power rating (10/1000 µs); validates suitability for IEC 61000-4-5 Level 3 (1 kV/42 Ω) surge testing. |
| Junction Temp Range | –55 °C to +150 °C - Enables deployment in under-hood automotive or industrial environments without derating. |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with 5.28 mm body length and 2.54 mm lead pitch; compatible with automated pick-and-place. |
Pinout & Package
DO-214AC (SMA) package: bi-directional device with no polarity marking; both terminals are electrically symmetrical and interchangeable. Cathode band is absent - device functions identically regardless of orientation during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve as bidirectional surge shunt nodes; no DC bias dependency - ideal for AC signal line or floating bus protection. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of differential pairs or AC-coupled interfaces without polarity concerns or layout restrictions. |
| 400 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial equipment and automotive ECUs up to Level 3. |
| Low clamping ratio (VC/VWM = 1.83) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 12 V buses. |
| MSL Level 1 rating | Supports standard reflow profiles (260 °C peak, 40 s) without baking or special handling - reduces manufacturing overhead. |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002 and whisker resistance per JESD201 Class 1A - validated for high-reliability commercial applications. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Transceiver Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) connected to vehicle ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS placed across sensor signal pair to clamp ±200 V transients within 1 ns response time. Use Value: Prevents latch-up or gate oxide damage in op-amps and ADC front-ends by limiting voltage to ≤23.8 V during 16.8 A surges. |
Use Scenario: Safeguarding CANH/CANL lines in factory automation controllers exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Symmetrical transient suppressor installed between differential bus lines to absorb common-mode surges without disrupting DC bias. Use Value: Maintains CAN signal integrity by clamping transients before they exceed transceiver absolute maximum ratings (±40 V). |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Shielding USB 2.0 D+/D− lines in set-top boxes from human-body-model (HBM) ESD events up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance bi-directional TVS placed directly at connector to divert ESD current before reaching USB PHY. Use Value: Achieves <10 pF junction capacitance (per datasheet Fig. 4 at VWM = 13 V), preserving signal rise/fall times and eye diagram compliance. |
Use Scenario: Protecting ADSL/VDSL line drivers and receivers from lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: High-energy TVS deployed across line transformer secondary windings to limit induced transients to safe levels. Use Value: Handles repetitive 400 W surges without degradation - validated for >1000 operations per MIL-STD-883 Method 3015.8. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13CA-E3/5A | Identical electrical specs and DO-214AC package; "CA" suffix explicitly denotes bi-directional version per Vishay naming convention (vs. "C" in SMAJ13C-E3/5A). | No functional difference - both rated for same VWM, VC, and PPPM; "CA" is Vishay's standardized bi-directional designation. | Select SMAJ13CA-E3/5A if BOM requires explicit bi-directional nomenclature alignment; otherwise SMAJ13C-E3/5A is functionally identical. |
| SMCJ13CA | Same VWM (13 V) and VC (23.8 V), but higher PPPM = 1500 W in larger DO-214AB (SMC) package; 3× footprint area and 2.5× thermal mass. | Used where higher surge energy (e.g., IEC 61000-4-5 Level 4) or improved thermal dissipation is required - not drop-in due to size and pad layout mismatch. | Choose SMCJ13CA only when 400 W is insufficient and PCB space allows SMC footprint; SMAJ13C-E3/5A remains optimal for space-constrained 400 W applications. |
Compared with SMAJ13C-E3/5A, SMAJ13CA-E3/5A offers identical protection performance in the same package with clearer bi-directional labeling, while SMCJ13CA trades compactness for higher surge capacity - making SMAJ13C-E3/5A the preferred choice for cost-sensitive, space-limited 400 W designs.
Availability
SMAJ13C-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB ports, and telecom DSL line protection requiring stable component supply and RoHS-compliant commercial-grade reliability.
Supply support for SMAJ13C-E3/5A 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 transient protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMAJ series was engineered specifically for robust, low-profile transient suppression in automotive, industrial, and telecom systems - balancing high surge capability, fast response, and surface-mount manufacturability.
FAQ
What does the "C" suffix in SMAJ13C-E3/5A indicate?
The "C" suffix in SMAJ13C-E3/5A denotes a bi-directional configuration per Vishay's naming convention - confirmed in the datasheet's "DEVICES FOR BI-DIRECTION APPLICATIONS" section, which states that "C or CA suffix (e.g., SMAJ10C, SMAJ10CA)" applies to bi-directional types. Electrical characteristics including VBR, VWM, and VC are specified for both polarities, and the device lacks cathode band marking. SMAJ13C-E3/5A is functionally identical to SMAJ13CA-E3/5A.
Is SMAJ13C-E3/5A suitable for protecting a 12 V automotive power rail?
Yes, SMAJ13C-E3/5A is explicitly suited for 12 V system protection: its 13 V VWM provides adequate margin above nominal 12 V while allowing clamping to 23.8 V during transients - well below typical 36 V automotive IC absolute maximum ratings. The 400 W rating handles ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump initiation) waveforms when properly laid out with 5.0 × 5.0 mm copper pads.
Does SMAJ13C-E3/5A have a defined anode and cathode?
No - SMAJ13C-E3/5A is a bi-directional TVS diode with symmetrical terminals and no polarity marking. As stated in the datasheet's "Polarity" section: "no marking on bi-directional types", and "Electrical characteristics apply in both directions." This allows placement in either orientation on differential signal lines or AC-coupled paths without affecting clamping behavior.
What is the maximum clamping voltage of SMAJ13C-E3/5A under surge conditions?
The maximum clamping voltage (VC) of SMAJ13C-E3/5A is 23.8 V at 16.8 A peak pulse current (IPPM) with a 10/1000 µs waveform, as specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of document 88390. This value is measured under standardized test conditions (TA = 25 °C, mounted on 5.0 × 5.0 mm copper pads) and represents the upper voltage limit imposed on protected circuitry during worst-case surge events.
How does the E3/5A suffix affect the specifications of SMAJ13C-E3/5A?
The "E3/5A" suffix indicates RoHS-compliant commercial-grade packaging: "E3" denotes matte tin plating meeting JESD201 Class 1A whisker resistance, and "5A" specifies 13-inch tape-and-reel delivery with 7500 units per reel. Per the "ORDERING INFORMATION" table on page 4, this affects only packaging and plating - all electrical and thermal specifications (VWM, VC, PPPM, TJ) remain identical to other SMAJ13C variants such as SMAJ13C-E3/61.
SMAJ13C-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.8V
- Current - Peak Pulse (10/1000µs):
- 16.8A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
SMAJ13C-E3/5A FAQ
1.How can I place an order for SMAJ13C-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13C-E3/5A 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 SMAJ13C-E3/5A reliable?
The price and inventory of SMAJ13C-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ13C-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ13C-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13C-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13C-E3/5A?
SMAJ13C-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13C-E3/5A 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 SMAJ13C-E3/5A?
For technical support, including SMAJ13C-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13C-E3/5A requirements.
6.How does Aetrix verify that SMAJ13C-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ13C-E3/5A 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 SMAJ13C-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ13C-E3/5A?
All SMAJ13C-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13C-E3/5A, 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 SMAJ13C-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ13C-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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