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Vishay General Semiconductor - Diodes Division SMA5J26CHE3/5A
- Part No.:
- SMA5J26CHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26CHE3/5A.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,395
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Product details
Overview
SMA5J26CHE3/5A from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on signal and power lines. It features a 26 V stand-off voltage (VWM), 42.1 V maximum clamping voltage at 11.9 A peak pulse current, and 500 W peak pulse power dissipation with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SMA5J26CHE3/5A datasheet, SMA5J26CHE3/5A pinout, SMA5J26CHE3/5A application, or SMA5J26CHE3/5A equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 suffix, and thermal resistance of 80 °C/W junction-to-ambient under standard pad layout.
Technical Context
This TVS diode operates symmetrically in both directions, with breakdown voltage (VBR) specified between 28.9 V and 31.9 V at 1 mA test current. Its low incremental surge resistance enables fast response to ESD and lightning-induced transients, while glass passivated chip junction ensures stable performance across -55 °C to +150 °C operating temperature range.
The device meets MSL level 1 per J-STD-020, supports lead-free reflow up to 260 °C peak, and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - reverse stand-off voltage; defines maximum continuous operating voltage before clamping begins |
| VBR min/max | 28.9 V / 31.9 V - breakdown occurs within this range at 1 mA, ensuring predictable turn-on threshold |
| VC @ IPPM | 42.1 V - clamping voltage at 11.9 A peak pulse current; limits downstream voltage stress during surge events |
| PPPM | 500 W - peak pulse power handling with 10/1000 µs waveform; determines transient energy absorption capacity |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient on 5.0 mm × 5.0 mm copper pads; guides PCB thermal design |
| Polarity | Bi-directional - no polarity marking; protects AC-coupled or differential signal lines without orientation constraints |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile case with molded UL 94 V-0 compound. Cathode band absent - consistent with bi-directional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (direction-agnostic) | One end of symmetrical P-N junction; accepts surge current regardless of polarity |
| Cathode | Transient current exit (direction-agnostic) | Other end of symmetrical P-N junction; completes clamping path during either polarity surge |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and unmarked PCB layouts |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor interfaces requiring extended lifetime and stress resilience |
| Glass passivated junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for industrial outdoor deployments |
| MSL Level 1 rating | Permits standard SMT reflow without baking or special handling, reducing manufacturing cost and process complexity |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a), improving system-level immunity |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Standby clamping device placed at connector entry point; conducts only during overvoltage events >26 V. Use Value: Limits transient voltage to ≤42.1 V, preventing damage to downstream MCU inputs rated for 3.3 V or 5 V logic levels. | Use Scenario: Shielding PLC digital input modules from field-side surges caused by relay coil de-energization or lightning coupling on 24 V DC control lines. IC Role / Device Role / Timing Role: Primary front-end transient suppressor mounted directly at terminal block; absorbs up to 500 W for 1 ms. Use Value: Maintains functional integrity of optocoupler input stages by clamping transients before they exceed isolation barrier ratings. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE controller ICs against induced surges on RJ45 ports in enterprise switches and IP cameras. IC Role / Device Role / Timing Role: Bi-directional shunt protector on differential pairs; responds within <1 ns to ESD and fast transients. Use Value: Prevents latch-up or gate oxide rupture in 2.5 V/3.3 V PHYs by limiting common-mode voltage excursion to safe levels. | Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller-based motor drivers. IC Role / Device Role / Timing Role: Secondary-level clamp on motor driver supply rail; complements primary bulk capacitance and ferrite beads. Use Value: Reduces electromagnetic emissions and prevents reset corruption in 8-bit MCUs by holding rail voltage within ±10 % of nominal during 40 A inductive kickback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26AHE3/5A | Same electrical specs and AEC-Q101 qualification; differs only in packaging suffix (HE3 vs. HE3/5A denotes same reel size and lead finish) | No functional difference; identical use cases and placement | Select SMA5J26AHE3/5A only if ordering system requires exact base P/N without trailing /5A designation |
| SMA6J26CA | 600 W PPPM rating (vs. 500 W); higher IPPM (13.3 A); same VWM/VBR/VC; non-AEC-Q101 commercial grade | Suitable for non-automotive industrial equipment where higher surge margin is prioritized over automotive qualification | Choose SMA6J26CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 and AEC-Q101 is not mandated |
Compared with SMA5J26CHE3/5A, SMA5J26AHE3/5A offers identical protection performance and qualification but reflects alternate part numbering convention, while SMA6J26CA trades automotive compliance for +20 % surge power headroom - enabling longer transient survival in high-energy industrial environments without layout change.
Availability
SMA5J26CHE3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line interface surge suppression requiring stable component supply and full traceability.
Supply support for SMA5J26CHE3/5A 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 TVS devices with emphasis on high-reliability, high-power-density solutions.
The SMA5J series is engineered for robust transient suppression in space-constrained, high-stress environments - particularly targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and repeatable clamping performance.
FAQ
What is the clamping voltage of the SMA5J26CHE3/5A under maximum rated surge current?
The SMA5J26CHE3/5A exhibits a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current (IPPM) of 11.9 A using a 10/1000 µs waveform. This value is measured per standard test conditions defined in ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 24-Oct-12. The SMA5J26CHE3/5A maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is the SMA5J26CHE3/5A suitable for automotive applications?
Yes, the SMA5J26CHE3/5A is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. The HE3 suffix explicitly denotes AEC-Q101 qualification and JESD 201 class 2 whisker resistance. The SMA5J26CHE3/5A also meets MSL level 1 and supports lead-free reflow up to 260 °C, aligning with automotive manufacturing requirements.
Does the SMA5J26CHE3/5A have polarity markings on the package?
No, the SMA5J26CHE3/5A does not feature a cathode band or other polarity marking because it is a bi-directional TVS diode. As stated in the Vishay datasheet, "no marking on bi-directional types." This allows flexible placement on PCBs with AC-coupled or differential signal paths, eliminating orientation-dependent assembly errors during automated placement.
What is the thermal resistance of the SMA5J26CHE3/5A, and how does it affect PCB layout?
The SMA5J26CHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test board conditions; increasing pad area or adding thermal vias reduces RθJA. Proper thermal design is essential to sustain repeated 500 W surges without exceeding the 150 °C maximum junction temperature.
How does the SMA5J26CHE3/5A differ from the SMA5J26A-E3/5A variant?
The SMA5J26CHE3/5A and SMA5J26A-E3/5A share identical electrical specifications, package (DO-214AC), and thermal characteristics. The key distinction lies in qualification: SMA5J26CHE3/5A carries the HE3 suffix, indicating AEC-Q101 qualification and JESD 201 class 2 whisker resistance, whereas SMA5J26A-E3/5A (E3 suffix) is commercial-grade only. Both use RoHS-compliant matte tin plating and meet MSL level 1.
SMA5J26CHE3/5A 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- 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)
SMA5J26CHE3/5A FAQ
1.How can I place an order for SMA5J26CHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26CHE3/5A 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 SMA5J26CHE3/5A reliable?
The price and inventory of SMA5J26CHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26CHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J26CHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26CHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26CHE3/5A?
SMA5J26CHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26CHE3/5A 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 SMA5J26CHE3/5A?
For technical support, including SMA5J26CHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26CHE3/5A requirements.
6.How does Aetrix verify that SMA5J26CHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J26CHE3/5A 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 SMA5J26CHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J26CHE3/5A?
All SMA5J26CHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26CHE3/5A, 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 SMA5J26CHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J26CHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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