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Vishay General Semiconductor - Diodes Division SMA5J26C-E3/61
- Part No.:
- SMA5J26C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26C-E3/61.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,826
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Product details
Overview
SMA5J26C-E3/61 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 (VC) at 11.9 A peak pulse current (IPPM), 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SMA5J26C-E3/61 datasheet, SMA5J26C-E3/61 pinout, SMA5J26C-E3/61 application, or SMA5J26C-E3/61 equivalent, key selection considerations include bi-directional surge clamping capability, junction temperature rating up to +150 °C, RoHS-compliant matte tin-plated leads, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 28.9 V and 31.9 V at 1 mA test current. Its low incremental surge resistance and fast response time enable effective suppression of ESD and lightning-induced transients per IEC 61000-4-2 and IEC 61000-4-5 standards.
The device uses a glass-passivated silicon junction and is rated for non-repetitive 10/1000 µs waveform surges up to 500 W. Thermal resistance is 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), supporting reliable operation under transient stress when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse 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 |
| VC @ IPPM | 42.1 V - Clamped voltage seen by protected circuit during 11.9 A 10/1000 µs surge |
| PPPM | 500 W - Peak transient power handling capacity under standardized surge waveform |
| IPPM | 11.9 A - Maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | +150 °C - Maximum junction temperature, enabling use in under-hood automotive environments |
| RθJA | 80 °C/W - Thermal resistance defining temperature rise per watt dissipated in still air |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking. Molding compound meets UL 94 V-0; matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction - terminals are interchangeable; clamps voltage above |VWM| in either direction |
| Case (body) | Thermal and mechanical interface | DO-214AC body provides mechanical anchoring and contributes to thermal dissipation via PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body control, and ADAS subsystems |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity handling |
| Glass-passivated junction | Enhances long-term stability and reduces leakage drift under thermal cycling and humidity stress |
| Low profile DO-214AC package | 0.208" length × 0.157" width × 0.090" height - fits high-density layouts while maintaining 500 W surge rating |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤42.1 V during 11.9 A surges, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical at VWM) shunt protector on differential or single-ended signal traces. Use Value: Maintains signal integrity while clamping ±26 V transients - critical for 12-bit+ ADC accuracy in noisy factory environments. |
| Telecom Data Line Surge Suppression | Consumer USB Port Protection |
Use Scenario: Safeguarding RS-485 transceivers in building automation networks exposed to induced lightning surges. IC Role / Device Role / Timing Role: Bi-directional line protector on balanced differential pairs, placed adjacent to connector entry points. Use Value: Symmetrical clamping ensures equal protection on A/B lines without skew or common-mode imbalance. | Use Scenario: Adding robustness to USB 2.0 VBUS and D+/D− lines in portable chargers and docking stations. IC Role / Device Role / Timing Role: Secondary-level TVS after primary fuse or polyfuse, targeting fast ESD (IEC 61000-4-2 ±8 kV contact). Use Value: Sub-1 ns response time prevents ESD energy from reaching USB PHY, preserving enumeration reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26CA-E3/61 | Same electrical specs and package; CA suffix explicitly denotes bi-directional version (identical to C suffix in this family) | No functional difference - SMA5J26C-E3/61 and SMA5J26CA-E3/61 are manufacturer-equivalent part numbers | Select SMA5J26CA-E3/61 if BOM requires explicit "CA" designation per internal naming policy |
| SMC5J26CA | Same VWM/VC, but in larger DO-214AB (SMC) package; higher thermal mass (RθJA = 35 °C/W vs. 80 °C/W) | Better suited for high-repetition-rate surges or elevated ambient temperatures (>85 °C) | Choose SMC5J26CA only when board space allows and thermal derating margin is insufficient with SMA package |
Compared with SMA5J26C-E3/61, SMA5J26CA-E3/61 offers identical performance in the same footprint, while SMC5J26CA trades compactness for superior thermal handling - making the SMA variant optimal for space-constrained automotive and industrial modules where 500 W single-event capability suffices.
Availability
SMA5J26C-E3/61 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial PLC I/O modules, and telecom base station power supplies requiring stable component supply across extended production lifecycles.
Supply support for SMA5J26C-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The SMA5J series is engineered specifically for high-energy transient suppression in harsh environments, targeting AEC-Q101 compliance and robust surge immunity in 12 V and 24 V vehicle electrical systems.
FAQ
What does the "C" suffix mean in SMA5J26C-E3/61?
The "C" suffix in SMA5J26C-E3/61 indicates a bi-directional configuration - meaning the device clamps voltage transients equally in both polarities. This is confirmed in Vishay's datasheet revision 24-Oct-12, which states "for bi-directional devices use CA suffix (e.g. SMA5J40CA)" and clarifies that "electrical characteristics apply in both directions." The SMA5J26C-E3/61 is functionally identical to SMA5J26CA-E3/61.
Is SMA5J26C-E3/61 RoHS compliant and lead-free?
Yes, SMA5J26C-E3/61 is RoHS compliant and lead-free. The "E3" suffix explicitly denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads. Vishay documentation confirms compliance with Directive 2011/65/EU, and the device meets JESD 201 class 1A whisker testing requirements.
What is the maximum clamping voltage for SMA5J26C-E3/61 under surge conditions?
The maximum clamping voltage (VC) for SMA5J26C-E3/61 is 42.1 V, measured at the peak pulse current (IPPM) of 11.9 A using a 10/1000 µs waveform. This value is specified in the Electrical Characteristics table of the Vishay datasheet (document 88875) and defines the upper voltage limit imposed on protected circuits during standardized surge events.
Can SMA5J26C-E3/61 be used in place of a uni-directional TVS like SMA5J26A-E3/61?
No - SMA5J26C-E3/61 is bi-directional and lacks polarity marking, whereas SMA5J26A-E3/61 is uni-directional with a cathode band. Substituting them requires circuit review: SMA5J26C-E3/61 may conduct during normal forward bias in DC circuits, potentially causing malfunction. Use only where symmetrical clamping is required, such as AC lines or floating interfaces.
What is the thermal resistance and mounting requirement for optimal performance of SMA5J26C-E3/61?
SMA5J26C-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead (RθJL) of 25 °C/W. For optimal thermal performance, it must be mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet - smaller pads increase thermal impedance and risk thermal runaway during repeated surges.
SMA5J26C-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J26C-E3/61 FAQ
1.How can I place an order for SMA5J26C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26C-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 SMA5J26C-E3/61 reliable?
The price and inventory of SMA5J26C-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 SMA5J26C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J26C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26C-E3/61?
SMA5J26C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26C-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 SMA5J26C-E3/61?
For technical support, including SMA5J26C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26C-E3/61 requirements.
6.How does Aetrix verify that SMA5J26C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J26C-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 SMA5J26C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J26C-E3/61?
All SMA5J26C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26C-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 SMA5J26C-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J26C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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