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Vishay General Semiconductor - Diodes Division SMA5J14CAHE3/5A
- Part No.:
- SMA5J14CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14CAHE3/5A.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,207
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Product details
Overview
SMA5J14CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 14 V standoff voltage (VWM), 15.6–17.2 V breakdown range (VBR), 23.2 V clamping voltage at 21.6 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMA5J14CAHE3/5A datasheet, SMA5J14CAHE3/5A pinout, SMA5J14CAHE3/5A application, or SMA5J14CAHE3/5A equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
The device delivers consistent clamping performance across -55 °C to +150 °C operating range, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), supporting robust thermal management in compact PCB layouts typical of automotive ECUs and industrial controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin for protected line. |
| VBR min/max | 15.6 V / 17.2 V - breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 23.2 V at 21.6 A - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Pulse 5a. |
| TJ max | +150 °C - maximum junction temperature; enables use in under-hood automotive environments. |
| MSL Level | Level 1 per J-STD-020 - no floor life limitation; compatible with standard reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional type has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping allows connection across any two points needing surge protection. |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; thermal path to PCB copper pads critical for power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive 3.3 V or 5 V logic. |
| Glass passivated junction | Ensures stable VBR over time and temperature, reducing drift in long-life industrial deployments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) in engine control modules from load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-mode TVS placed directly at connector entry point to shunt transient energy before reaching MCU or signal conditioner. Use Value: Clamps to 23.2 V during 21.6 A surge, preventing damage to 16 V-rated input stages while maintaining AEC-Q101 compliance. | Use Scenario: Safeguarding RS-485 transceivers and PLC digital inputs exposed to field wiring-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on differential bus lines, activated only during >15.6 V events. Use Value: 500 W peak power rating handles repeated 1 kV/500 A lightning-induced surges per IEC 61000-4-5 Level 4. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side DC input protection in USB-C PD adapters and wireless charging base stations against ESD and capacitive coupling transients. IC Role / Device Role / Timing Role: Low-capacitance TVS placed between VBUS and GND to clamp fast-rising ESD pulses without affecting 100 W power delivery. Use Value: Fast response time and 23.2 V clamping preserve integrity of GaN FET gate drivers and USB PD controllers. | Use Scenario: Overvoltage protection on POTS line interfaces and VoIP gateway FXS ports subjected to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Bidirectional suppressor bridging tip/ring lines to ground, absorbing both polarity surges common in telecom environments. Use Value: Symmetrical 15.6–17.2 V breakdown ensures balanced protection without requiring external biasing networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14CA-M3/5A | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated by OEM spec. | Choose SMA5J14CA-M3/5A when environmental compliance requires halogen-free packaging. |
| SMA6J14CAHE3/5A | 600 W PPPM rating (vs. 500 W), same VWM/VBR/VC, identical package and AEC-Q101 qualification. | Higher surge margin for designs targeting IEC 61000-4-5 Level 4 with extended pulse duration or repetition. | Choose SMA6J14CAHE3/5A when system-level testing reveals marginal margin with 500 W rating. |
Compared with SMA5J14CAHE3/5A, the SMA5J14CA-M3/5A offers identical protection performance with halogen-free materials, while the SMA6J14CAHE3/5A provides 20 % higher peak pulse power - enabling longer surge duration tolerance without changing PCB layout or thermal design.
Availability
SMA5J14CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line card surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMA5J14CAHE3/5A 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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, thermally demanding applications - particularly targeting AEC-Q101-compliant automotive subsystems and industrial equipment exposed to harsh electrical environments.
FAQ
What is the polarity configuration of SMA5J14CAHE3/5A?
SMA5J14CAHE3/5A is a bidirectional TVS diode, meaning it conducts equally in both directions and has no cathode/anode marking on the SMA (DO-214AC) package. This allows symmetrical clamping of positive and negative transients without regard to orientation during PCB placement - a key advantage for protecting AC-coupled or floating signal paths in automotive and industrial systems where SMA5J14CAHE3/5A is commonly deployed.
Does SMA5J14CAHE3/5A meet automotive qualification standards?
Yes, SMA5J14CAHE3/5A is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. This certification validates its reliability under automotive temperature cycling, humidity, mechanical shock, and surge stress conditions. Engineers specifying SMA5J14CAHE3/5A for engine control units, body control modules, or ADAS sensor interfaces can rely on its proven performance in vehicle environments where SMA5J14CAHE3/5A must operate continuously from -55 °C to +150 °C.
What is the clamping voltage of SMA5J14CAHE3/5A at rated surge current?
The clamping voltage (VC) of SMA5J14CAHE3/5A is 23.2 V when subjected to its rated peak pulse current (IPPM) of 21.6 A using the standardized 10/1000 µs waveform. This value represents the maximum voltage that will appear across the protected circuit during a surge event - a critical parameter for ensuring downstream components like microcontrollers or transceivers remain within their absolute maximum ratings. The VC specification is guaranteed per Vishay's datasheet revision 09-Jan-2024 for SMA5J14CAHE3/5A.
How does the HE3 suffix affect the specifications of SMA5J14CAHE3/5A?
The "HE3" suffix in SMA5J14CAHE3/5A denotes RoHS-compliant construction with AEC-Q101 qualification - it does not alter electrical parameters such as VWM (14 V), VBR (15.6–17.2 V), or PPPM (500 W). Instead, HE3 confirms enhanced process controls, extended temperature validation, and traceability required for automotive use. All electrical and thermal specs for SMA5J14CAHE3/5A match those of the commercial-grade SMA5J14CA-E3/5A, but with added reliability assurance for safety-critical applications.
What PCB layout considerations apply to SMA5J14CAHE3/5A for optimal thermal performance?
For optimal thermal performance, SMA5J14CAHE3/5A must be mounted on minimum recommended copper pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper areas per terminal, per Vishay's datasheet. This pad size ensures effective heat dissipation given its 80 °C/W junction-to-ambient thermal resistance. Reducing pad area increases junction temperature during surge events, potentially degrading clamping consistency and long-term reliability - especially critical in automotive and industrial applications where SMA5J14CAHE3/5A operates near its 150 °C TJ limit.
SMA5J14CAHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 21.6A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J14CAHE3/5A FAQ
1.How can I place an order for SMA5J14CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14CAHE3/5A 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 SMA5J14CAHE3/5A reliable?
The price and inventory of SMA5J14CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J14CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J14CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14CAHE3/5A?
SMA5J14CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14CAHE3/5A 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 SMA5J14CAHE3/5A?
For technical support, including SMA5J14CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J14CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J14CAHE3/5A 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 SMA5J14CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J14CAHE3/5A?
All SMA5J14CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14CAHE3/5A, 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 SMA5J14CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J14CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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