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Vishay General Semiconductor - Diodes Division SMAJ14CA-M3/61
- Part No.:
- SMAJ14CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ14CA-M3/61.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,488
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Product details
Overview
SMAJ14CA-M3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 14 V standoff voltage (VWM), 23.2 V maximum clamping voltage (VC) at 17.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the SMAJ14CA-M3/61 datasheet, SMAJ14CA-M3/61 pinout, SMAJ14CA-M3/61 application, or SMAJ14CA-M3/61 equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.66), MSL Level 1 reflow compatibility, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector with symmetrical breakdown in both directions (VBR(min) = 15.6 V, VBR(max) = 17.2 V at 1 mA), enabling robust ESD and lightning-induced transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns).
Thermally, it delivers 3.3 W steady-state power dissipation with RθJA = 120 °C/W and RθJL = 30 °C/W, supporting operation from –55 °C to +150 °C. The device is rated for 40 A non-repetitive forward surge (8.3 ms half-sine) and meets UL 497B recognition for telecom protectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VC @ IPPM | 23.2 V at 17.2 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to ≤23.2 V. |
| PPPM | 400 W - Peak transient power handling capability; sufficient for IEC 61000-4-5 Level 3 (1 kV/42 Ω) surges. |
| IDRM | <1.0 μA - Reverse leakage at VWM; negligible loading on high-impedance sensor or data lines. |
| TJ(max) | +150 °C - Maximum junction temperature; supports under-hood automotive and industrial ambient environments. |
| Package | SMA (DO-214AC) - Low-profile SMD package with 5.0 mm × 5.0 mm copper pad thermal design; MSL Level 1 compliant. |
| Construction | Halogen-free, RoHS-compliant (M3 suffix); matte tin-plated leads solderable per J-STD-002/JESD 22-B102. |
Pinout & Package
SMAJ14CA-M3/61 uses the SMA (DO-214AC) surface-mount package - a two-terminal, bidirectional device with no polarity marking. The case is molded with UL 94 V-0 flammability-rated compound, and terminals are matte tin-plated for reliable reflow soldering. Thermal performance assumes 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient shunt path | No polarity marking required; identical clamping behavior in either direction - simplifies PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 surges up to 1 kV on 42 Ω source impedance without derating. |
| Clamping ratio VC/VWM = 1.66 | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V or 5 V logic interfacing with 14 V bias rails. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage across temperature and lifetime stress conditions. |
| AEC-Q101 qualification path (HM3 variant) | Enables drop-in qualification upgrade for automotive applications - same footprint and electrical specs as SMAJ14CA-M3/61. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed directly at connector entry point to divert surge energy before reaching sensitive interface ICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/100 ms) while surviving repeated 150 °C junction temperature excursions. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary transient suppressor on each channel's input line, coordinated with series impedance for IEC 61000-4-4 EFT immunity. Use Value: Limits clamped voltage to 23.2 V - well below 30 V absolute max rating of common 24 V input buffer ICs. |
| Telecom Line Interface | Consumer USB/Display Port ESD |
|
Use Scenario: Shielding RS-485/RS-232 transceiver pins in base station backhaul equipment from lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Secondary-level protector downstream of gas discharge tube (GDT), providing fast-response clamping after GDT arc initiation. Use Value: Sub-1 ns response ensures clamping occurs before transceiver damage threshold is exceeded during multi-kV surges. |
Use Scenario: Board-level ESD protection for HDMI, USB 2.0, or DisplayPort signal pairs in set-top boxes and monitors. IC Role / Device Role / Timing Role: Low-capacitance (CJ ≈ 200 pF at 0 V) bidirectional clamp placed adjacent to connector to absorb ±15 kV HBM events. Use Value: Halogen-free M3 construction meets consumer product environmental compliance without sacrificing clamping performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CA-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred for commercial-grade cost-sensitive designs where halogen-free requirement is absent. | Select E3 when halogen-free certification is not mandated by end-product environmental policy. |
| SMAJ14A-M3/61 | Unidirectional version; cathode band marked; VF = 3.5 V at 25 A (forward conduction only). | Required only where DC bias polarity is fixed and forward conduction must be blocked in one direction. | Choose unidirectional SMAJ14A-M3/61 only if circuit topology prevents reverse-bias conduction - otherwise SMAJ14CA-M3/61 offers simpler layout and symmetric protection. |
Compared with SMAJ14CA-E3/61, the M3 suffix adds halogen-free compliance without electrical trade-offs; versus SMAJ14A-M3/61, the CA variant eliminates polarity constraints and enables universal placement - making SMAJ14CA-M3/61 the optimal choice for most bidirectional signal line protection tasks.
Availability
SMAJ14CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line interfaces, and consumer display port protection requiring stable component supply and full halogen-free compliance.
Supply support for SMAJ14CA-M3/61 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMAJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness, consistency, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of SMAJ14CA-M3/61 under a 10/1000 μs surge?
The SMAJ14CA-M3/61 clamps to a maximum of 23.2 V when subjected to its rated 17.2 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is guaranteed across temperature and process variation per Vishay Document 88390, ensuring predictable overvoltage limiting for downstream ICs.
Is SMAJ14CA-M3/61 suitable for automotive applications?
SMAJ14CA-M3/61 itself is commercial-grade, but Vishay offers the functionally identical SMAJ14CA-HM3_X variant (e.g., SMAJ14CA-HM3_A) that is AEC-Q101 qualified. The M3 suffix confirms halogen-free RoHS compliance - a prerequisite for many automotive Tier 1 supply chains even before full qualification.
How does SMAJ14CA-M3/61 differ from SMAJ14A-M3/61?
SMAJ14CA-M3/61 is bidirectional with symmetrical clamping in both polarities and no polarity marking, while SMAJ14A-M3/61 is unidirectional with a cathode band and conducts forward current (VF = 3.5 V at 25 A). Use SMAJ14CA-M3/61 for AC-coupled or polarity-agnostic lines; choose SMAJ14A-M3/61 only when DC blocking in one direction is required.
What is the thermal resistance of SMAJ14CA-M3/61?
The SMAJ14CA-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured on the recommended 0.2" × 0.2" copper pad layout. These values enable reliable 3.3 W steady-state dissipation and transient thermal recovery in compact PCB designs.
Does SMAJ14CA-M3/61 meet moisture sensitivity requirements for SMT assembly?
Yes - SMAJ14CA-M3/61 is rated MSL Level 1 per J-STD-020, with a maximum reflow peak temperature of 260 °C. No dry-pack or baking is required prior to standard lead-free reflow, simplifying manufacturing flow and reducing risk of popcorning or delamination.
SMAJ14CA-M3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 17.2A
- 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)
SMAJ14CA-M3/61 FAQ
1.How can I place an order for SMAJ14CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ14CA-M3/61 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 SMAJ14CA-M3/61 reliable?
The price and inventory of SMAJ14CA-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ14CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ14CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ14CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ14CA-M3/61?
SMAJ14CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ14CA-M3/61 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 SMAJ14CA-M3/61?
For technical support, including SMAJ14CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ14CA-M3/61 requirements.
6.How does Aetrix verify that SMAJ14CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ14CA-M3/61 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 SMAJ14CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ14CA-M3/61?
All SMAJ14CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ14CA-M3/61, 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 SMAJ14CA-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ14CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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