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Vishay General Semiconductor - Diodes Division SMAJ13CAHE3/61
- Part No.:
- SMAJ13CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13CAHE3/61.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,244
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Product details
Overview
SMAJ13CAHE3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust ESD and surge protection on signal/power lines. It features a 13 V standoff voltage (VWM), 14.4–15.9 V breakdown range (VBR at 1 mA), 21.5 V clamping voltage (VC) at 18.6 A peak pulse current, and 400 W peak pulse power (10/1000 μs waveform), commonly deployed to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMAJ13CAHE3/61 datasheet, SMAJ13CAHE3/61 pinout, SMAJ13CAHE3/61 application, or SMAJ13CAHE3/61 equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 120 °C/W junction-to-ambient thermal resistance, low leakage (<1 μA at 13 V), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ) up to 13 V, then rapidly transitions to low-impedance conduction when transients exceed its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), enabling suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The SMAJ13CAHE3/61 is rated for repetitive 10/1000 μs pulses at 0.01% duty cycle (400 W ≤78 V; 300 W >78 V), with thermal derating above 25 °C per Fig. 2. Its bidirectional symmetry eliminates polarity concerns in AC-coupled or differential lines, and its MSL Level 1 rating 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 significant leakage begins; defines safe working margin for protected line. |
| VBR (min/max) | 14.4 V / 15.9 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events. |
| VC @ IPPM | 21.5 V at 18.6 A - Clamped voltage seen by downstream circuitry during 400 W transient; limits stress on ICs/MOSFETs. |
| PPPM | 400 W (10/1000 μs) - Peak surge energy handling capacity; sufficient for automotive load-dump and industrial switching transients. |
| ID @ VWM | <1 μA - Ultra-low reverse leakage preserves signal integrity and battery life in always-on systems. |
| TJ max | +150 °C - Enables operation in under-hood automotive and high-temperature industrial environments. |
| RθJA | 120 °C/W - Thermal resistance dictates required copper pad area (0.2" × 0.2") for sustained power dissipation without exceeding TJ limit. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Identical bidirectional conduction - either terminal serves as input/output; no orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| 400 W peak pulse power | Withstands repeated 10/1000 μs surges up to 18.6 A without degradation - meets ISO 7637-2 Pulse 1/2/5a requirements. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during clamping - critical for protecting 12 V logic-level ICs and MOSFET gate drivers. |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles without preconditioning - reduces manufacturing complexity. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and humidity stress. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed directly at connector entry point to divert surge energy to ground before reaching sensitive ICs. Use Value: Prevents latch-up or permanent damage to transceivers operating at 12 V supply rails while maintaining signal fidelity below 13 V. | Use Scenario: Safeguarding PLC digital input modules against field-wiring transients induced by relay coil switching or motor contactors. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to clamp spikes before they reach optocoupler or microcontroller input stages. Use Value: Enables reliable operation in harsh factory environments where >1 kV transients occur regularly, reducing field failure rates. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side surge protection in AC/DC adapters for smart home devices, guarding against mains-borne surges entering low-voltage DC output rails. IC Role / Device Role / Timing Role: Clamp placed between +5 V/12 V output and ground to suppress common-mode transients coupled through transformer parasitics. Use Value: Complies with IEC 61000-4-5 Level 3 (2 kV) immunity without requiring additional filtering components. | Use Scenario: Protecting Ethernet PHY interfaces and PoE injectors from lightning-induced surges on twisted-pair cabling in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS array used across differential pairs (e.g., TX+/TX−) to clamp mode-common transients while preserving signal integrity. Use Value: Maintains <1 pF junction capacitance at 0 V bias - avoids signal distortion in 100BASE-TX and 1000BASE-T applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13CA-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free compliance is mandated by OEM environmental policy. | Direct material substitution where halogen content must be minimized - same footprint, same thermal profile. |
| SMBJ13CAHE3/61 | Same VWM/VBR/VC, but SMB (DO-214AA) package - 20% larger footprint, 500 W PPPM rating. | Higher surge margin suits higher-energy applications (e.g., 48 V industrial buses); requires PCB layout change. | Choose when system-level surge testing exceeds 400 W - not drop-in; verify pad layout and thermal relief. |
Compared with SMAJ13CAHE3/61, the SMAJ13CA-M3/61 offers identical protection performance with halogen-free construction, while the SMBJ13CAHE3/61 provides higher pulse power at the cost of larger board area - selection depends on environmental compliance needs and surge energy budget.
Availability
SMAJ13CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, consumer power adapter outputs, and telecom line card protection requiring stable component supply across production lifecycles.
Supply support for SMAJ13CAHE3/61 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade qualification.
The SMAJ series is engineered specifically for high-reliability transient suppression in automotive, industrial, and communications infrastructure - balancing compact size, AEC-Q101 compliance, and repeatable clamping performance.
FAQ
What is the clamping voltage of the SMAJ13CAHE3/61 under maximum surge conditions?
The SMAJ13CAHE3/61 exhibits a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 18.6 A (10/1000 μs waveform). This value is measured per JEDEC standards and guarantees that downstream components experience no more than 21.5 V during a 400 W transient event - critical for safeguarding 12 V logic and interface ICs. The SMAJ13CAHE3/61 maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is the SMAJ13CAHE3/61 suitable for automotive applications?
Yes, the SMAJ13CAHE3/61 is AEC-Q101 qualified and explicitly designed for automotive use cases including engine control units, body electronics, and ADAS sensor interfaces. Its bidirectional architecture, 150 °C maximum junction temperature, and robust surge handling (400 W, 10/1000 μs) meet ISO 7637-2 and ISO 16750-2 requirements. The SMAJ13CAHE3/61 also complies with JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility - confirming suitability for under-hood and chassis-mounted systems.
How does the bidirectional design of the SMAJ13CAHE3/61 affect circuit layout?
The SMAJ13CAHE3/61 has no polarity marking and identical electrical characteristics in both directions, eliminating orientation constraints during PCB placement. This simplifies layout for AC-coupled signals, differential buses (e.g., CAN, RS-485), and ungrounded power rails. Unlike unidirectional TVS diodes, the SMAJ13CAHE3/61 does not require cathode alignment - reducing assembly errors and enabling symmetric routing. Its DO-214AC package fits standard SMA footprints without modification.
What is the maximum reverse leakage current of the SMAJ13CAHE3/61 at its standoff voltage?
At its 13 V standoff voltage (VWM), the SMAJ13CAHE3/61 guarantees a maximum reverse leakage current (ID) of 1 μA at 25 °C, with typical values well below 0.1 μA. This ultra-low leakage preserves signal integrity in high-impedance sensor paths and minimizes quiescent power loss in battery-powered systems. The SMAJ13CAHE3/61 maintains leakage <5 μA up to 85 °C - verified per Vishay's characterization data in Document 88390.
Can the SMAJ13CAHE3/61 replace a unidirectional TVS like SMAJ13AHE3/61 in an existing design?
No - the SMAJ13CAHE3/61 is bidirectional and cannot directly replace the unidirectional SMAJ13AHE3/61 without circuit review. While both share identical VWM, VBR, and VC ratings, the unidirectional version conducts only in reverse bias and blocks forward current, whereas the SMAJ13CAHE3/61 conducts symmetrically. Substituting the SMAJ13CAHE3/61 in a DC-biased line may cause unintended conduction; verify polarity requirements and clamping direction before replacement.
SMAJ13CAHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 18.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ13CAHE3/61 FAQ
1.How can I place an order for SMAJ13CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13CAHE3/61 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 SMAJ13CAHE3/61 reliable?
The price and inventory of SMAJ13CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ13CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ13CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13CAHE3/61?
SMAJ13CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13CAHE3/61 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 SMAJ13CAHE3/61?
For technical support, including SMAJ13CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13CAHE3/61 requirements.
6.How does Aetrix verify that SMAJ13CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ13CAHE3/61 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 SMAJ13CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ13CAHE3/61?
All SMAJ13CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13CAHE3/61, 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 SMAJ13CAHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ13CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ13CAHE3/61 Tags
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