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Vishay General Semiconductor - Diodes Division SMAJ13C-E3/61
- Part No.:
- SMAJ13C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13C-E3/61.pdf
- Description:
- TVS DIODE 13VWM 23.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,601
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Product details
Overview
SMAJ13C-E3/61 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, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ13C-E3/61 datasheet, SMAJ13C-E3/61 pinout, SMAJ13C-E3/61 application, or SMAJ13C-E3/61 equivalent, key selection criteria include bi-directional surge suppression capability, low clamping ratio (VC/VWM = 1.83), JEDEC-compliant thermal resistance (RθJA = 120 °C/W), RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 14.4 V and 17.6 V at 1 mA test current. Its clamping behavior is characterized under standardized 10/1000 µs surge conditions, delivering consistent protection without polarity dependence.
Thermal performance is defined by junction-to-ambient thermal resistance of 120 °C/W on 5.0 × 5.0 mm copper pads, and junction-to-lead resistance of 30 °C/W. The device supports operating junction temperatures from –55 °C to +150 °C and meets J-STD-020 MSL Level 1 with 260 °C solder dip tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin for protected circuitry. |
| VC @ IPPM | 23.8 V at 16.8 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream components. |
| PPPM | 400 W - Peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 level 4 surges. |
| IPPM | 16.8 A - Peak surge current supported at rated clamping voltage; derived from 400 W / 23.8 V calculation. |
| RθJA | 120 °C/W - Thermal resistance to ambient on standard PCB pad layout; informs derating above 25 °C ambient. |
| TJ Range | –55 °C to +150 °C - Operational junction temperature range; supports under-hood automotive and industrial environments. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminal design for AC-coupled or floating-line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Both terminals function identically; no cathode band marking required per bi-directional specification. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals or ungrounded differential lines without polarity concerns. |
| 400 W peak pulse power | Supports high-energy transients per IEC 61000-4-5; maintains clamping integrity up to 16.8 A surge current. |
| Low clamping ratio (VC/VWM = 1.83) | Minimizes overvoltage exposure to protected ICs while maintaining sufficient margin above VWM. |
| MSL Level 1, 260 °C reflow compatible | Allows direct placement into standard lead-free SMT assembly without pre-baking or special handling. |
| RoHS-compliant matte tin terminations | Ensures reliable solderability per J-STD-002 and JESD22-B102; passes JESD201 Class 1A whisker testing. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed across sensor output and ground to limit voltage excursions during ESD or ISO 7637-2 pulses. Use Value: Prevents latch-up or damage to precision ADC inputs by clamping transients to ≤23.8 V while maintaining 13 V system operating margin. |
Use Scenario: Safeguarding CANH/CANL differential pair against EFT bursts and surge events in factory automation nodes. IC Role / Device Role / Timing Role: Paired SMAJ13C-E3/61 devices placed line-to-ground on each bus wire to suppress common-mode surges without distorting signal integrity. Use Value: Maintains CAN signal eye diagram compliance by limiting clamping overshoot to <24 V and adding <1 pF junction capacitance at VWM. |
| Consumer Power Adapter Input Stage | Telecom DSL Line Card Surge Protection |
Use Scenario: Secondary-side DC input protection in wall adapters exposed to lightning-induced surges on connected USB or Ethernet cables. IC Role / Device Role / Timing Role: Bi-directional TVS mounted across isolated DC output rails to absorb repetitive 10/1000 µs transients before they reach LDO regulators. Use Value: Enables 400 W surge handling without derating below 78 V - critical for 12–24 V adapter outputs where higher VWM variants are unsuitable. |
Use Scenario: Front-end protection of ADSL/VDSL line interface ICs against induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Differential-mode TVS pair applied between tip/ring and ground to shunt longitudinal surges while preserving low-frequency signal fidelity. Use Value: Achieves <10 µA leakage at 13 V, minimizing standby current impact on always-on DSL modems while providing 23.8 V clamping ceiling. |
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-E3/61 | Identical electrical specs and packaging; CA suffix denotes same bi-directional construction as C variant per Vishay documentation. | No functional difference - CA and C suffixes are interchangeable for this voltage grade per Document #88390 Table heading and ordering examples. | Select SMAJ13CA-E3/61 only if legacy BOM specifies CA; otherwise SMAJ13C-E3/61 is fully equivalent. |
| SMBJ13C-E3/52 | Same VWM (13 V) and VC (23.8 V), but SMB package (DO-214AA) with higher PPPM (600 W) and lower RθJA (80 °C/W). | Better thermal performance and surge margin, but requires larger PCB footprint (5.3 × 4.1 mm vs. 4.5 × 2.8 mm) and different tape/reel packaging. | Choose SMBJ13C-E3/52 when higher surge endurance or improved thermal dissipation is required; not drop-in due to package size change. |
Compared with SMAJ13C-E3/61, SMAJ13CA-E3/61 offers identical protection characteristics in the same DO-214AC package, while SMBJ13C-E3/52 provides enhanced 600 W surge rating in a larger SMB outline - requiring layout revision but enabling higher reliability in thermally constrained or high-surge environments.
Availability
SMAJ13C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer power adapter secondary sides, and telecom DSL line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ13C-E3/61 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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The SMAJ series was developed specifically for surface-mount transient suppression in space-constrained, high-surge environments - emphasizing low-profile packaging, repeatable clamping, and AEC-Q101 readiness for automotive use.
FAQ
What is the clamping voltage of SMAJ13C-E3/61 under standard surge conditions?
The SMAJ13C-E3/61 exhibits a maximum clamping voltage (VC) of 23.8 V when subjected to its rated peak pulse current of 16.8 A using the 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay Document #88390 and represents the upper voltage limit imposed on protected circuitry during transient events. The clamping ratio (VC/VWM) is 1.83, confirming effective overvoltage suppression relative to its 13 V stand-off rating.
Is SMAJ13C-E3/61 suitable for automotive applications?
Yes, SMAJ13C-E3/61 is qualified for automotive use per its compliance with AEC-Q101 when ordered with the HE3 suffix (e.g., SMAJ13CHE3/61). While the standard E3 version is commercial-grade, the device's –55 °C to +150 °C operating junction range, MSL Level 1 reflow compatibility, and robust 400 W surge rating make it suitable for non-safety-critical automotive subsystems such as body control modules and sensor interfaces - provided the specific qualification requirements of the end application are verified.
How does the bi-directional functionality of SMAJ13C-E3/61 affect its PCB layout?
The bi-directional nature of SMAJ13C-E3/61 eliminates polarity constraints in PCB layout - no cathode band marking exists, and both terminals are functionally identical. This allows placement across any two points requiring symmetrical transient suppression, such as differential signal pairs or ungrounded power rails. Layout must still follow Vishay's recommended 5.0 × 5.0 mm copper pad dimensions per Figure 5 to ensure rated thermal and surge performance, but orientation is arbitrary.
What is the maximum reverse leakage current for SMAJ13C-E3/61 at its stand-off voltage?
At its 13 V stand-off voltage (VWM), the SMAJ13C-E3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C ambient temperature, as specified in the Electrical Characteristics table on page 2 of Vishay Document #88390. This low leakage ensures minimal impact on battery-powered or high-impedance circuits, supporting applications like always-on sensor nodes and telecom line cards where quiescent current budgets are tight.
Does SMAJ13C-E3/61 require derating above 25 °C ambient temperature?
Yes, SMAJ13C-E3/61 requires thermal derating above 25 °C ambient, governed by its 120 °C/W junction-to-ambient thermal resistance and the 150 °C maximum junction temperature. Per Figure 2 in Vishay Document #88390, peak pulse power must be linearly reduced by approximately 0.4% per °C rise above 25 °C - meaning at 85 °C ambient, the effective PPPM drops to ~240 W. Designers must apply this derating when sizing for sustained high-temperature operation in engine compartments or enclosed industrial enclosures.
SMAJ13C-E3/61 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-E3/61 FAQ
1.How can I place an order for SMAJ13C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13C-E3/61 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-E3/61 reliable?
The price and inventory of SMAJ13C-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ13C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ13C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13C-E3/61?
SMAJ13C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13C-E3/61 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-E3/61?
For technical support, including SMAJ13C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13C-E3/61 requirements.
6.How does Aetrix verify that SMAJ13C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ13C-E3/61 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-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ13C-E3/61?
All SMAJ13C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13C-E3/61, 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-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ13C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ13C-E3/61 Tags
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