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Vishay General Semiconductor - Diodes Division SMA5J26CAHE3_A/I
- Part No.:
- SMA5J26CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26CAHE3_A/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,093
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Product details
Overview
SMA5J26CAHE3_A/I 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 26 V standoff voltage (VWM), 42.1 V 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 use - deployed to protect CAN transceivers, sensor interfaces, and DC power rails against ESD and load dump.
For engineers reviewing the SMA5J26CAHE3_A/I datasheet, SMA5J26CAHE3_A/I pinout, SMA5J26CAHE3_A/I application, or SMA5J26CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, 26 V reverse standoff rating, 500 W surge handling, AEC-Q101 qualification status, and SMA package compatibility with automated SMT assembly.
Technical Context
This device operates as a voltage-clamped avalanche diode, responding within picoseconds to transients exceeding its breakdown threshold (VBR = 28.9–31.9 V). Its bidirectional symmetry ensures identical clamping in both polarities, eliminating polarity-sensitive layout constraints.
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, with junction temperature rated from –55 °C to +150 °C. The glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
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 initiates within this range at 1 mA test current |
| VC @ IPPM | 42.1 V - Clamped voltage during 500 W surge (10/1000 μs), limiting downstream stress |
| IPPM | 11.9 A - Peak surge current supported at rated clamping voltage |
| PPPM | 500 W - Transient energy absorption capacity per single event |
| TJ Range | –55 °C to +150 °C - Enables operation in under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test standard |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Surge conduction path | No polarity marking; symmetric terminals conduct equally in either direction during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 500 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA at VWM) across lifetime and temperature |
| MSL Level 1 rating | Allows unlimited floor life and standard 260 °C reflow without preconditioning |
Applications
| Automotive Sensor Protection | CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: TVS diode placed across sensor supply and ground to clamp transients before they reach precision ADC inputs. Use Value: Maintains signal integrity by limiting voltage excursions to ≤42.1 V during 500 W surges, preventing ADC saturation or latch-up. | Use Scenario: Safeguarding high-speed CAN FD transceivers (e.g., TJA1044) against ESD and coupled noise on differential bus lines. IC Role / Device Role / Timing Role: Bidirectional TVS connected between CANH–CANL and ground to suppress common-mode transients without disrupting data timing. Use Value: Preserves signal rise/fall times due to low junction capacitance (<100 pF at 0 V), avoiding bit error rate degradation. |
| Industrial Power Input | Consumer USB Port Protection |
Use Scenario: Shielding 24 V DC input stages of PLC I/O modules from inductive switching spikes and lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge limiter mounted at board edge, upstream of DC-DC converter and EMI filter. Use Value: Absorbs up to 500 W (10/1000 μs) without failure, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth). | Use Scenario: Adding robustness to USB 2.0 VBUS lines in portable medical devices exposed to frequent ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VBUS and GND to shunt ±15 kV contact ESD per IEC 61000-4-2. Use Value: Clamps ESD pulses to <42.1 V within <1 ns, protecting USB controller ICs rated for only 6 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26CAHM3_A/I | Halogen-free variant; identical electrical specs and AEC-Q101 qualification | Required where halogen-free material compliance is mandated (e.g., EU public transport, aerospace) | Select when RoHS + halogen-free certification is contractually required |
| SMCJ26CAHE3_A/I | Same VWM/VC, but SMC (DO-214AB) package: 1.5× higher PPPM (1500 W), larger footprint | Used where higher surge margin is needed and PCB space allows larger package | Choose for enhanced ruggedness in harsh environments where 500 W is insufficient |
Compared with SMA5J26CAHE3_A/I, SMA5J26CAHM3_A/I offers identical protection performance with halogen-free construction, while SMCJ26CAHE3_A/I delivers triple the surge power in a larger package - enabling design flexibility between compactness and margin.
Availability
SMA5J26CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor systems, CAN bus nodes, industrial 24 V power inputs, and consumer USB port protection requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for SMA5J26CAHE3_A/I 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, efficiency, and automotive-grade validation.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial applications, balancing low profile, high surge rating, and AEC-Q101 compliance.
FAQ
What is the clamping voltage of the SMA5J26CAHE3_A/I under a 500 W surge?
The SMA5J26CAHE3_A/I clamps to 42.1 V when subjected to its rated 500 W peak pulse power (10/1000 μs waveform) at 11.9 A peak pulse current. This value is measured per JEDEC standards and guarantees predictable voltage limiting during standardized surge events, ensuring downstream ICs remain within safe operating voltage limits.
Is SMA5J26CAHE3_A/I suitable for bidirectional signal line protection?
Yes, SMA5J26CAHE3_A/I is explicitly a bidirectional TVS diode, with symmetrical clamping characteristics in both polarities. Its CA suffix confirms bidirectional functionality, making it ideal for protecting AC-coupled interfaces like RS-485, CAN, or audio lines where polarity reversal or common-mode transients occur.
Does SMA5J26CAHE3_A/I meet automotive qualification standards?
Yes, SMA5J26CAHE3_A/I carries AEC-Q101 qualification, verified through temperature cycling, highly accelerated life testing (HALT), and ESD stress per automotive reliability requirements. The HE3 suffix denotes RoHS-compliant and AEC-Q101-qualified construction, validated for under-hood and chassis-mounted applications.
What is the thermal resistance of SMA5J26CAHE3_A/I, and how does it affect PCB layout?
SMA5J26CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead (RθJL) of 25 °C/W. To maintain safe operation at full 500 W surge rating, PCB copper pads must follow Vishay's recommended 0.2" × 0.2" (5 mm × 5 mm) pad layout per terminal to achieve specified derating curves.
How does the SMA5J26CAHE3_A/I differ from unidirectional variants like SMA5J26AHE3_A/I?
SMA5J26CAHE3_A/I provides symmetrical clamping for both positive and negative transients, with no cathode band marking. In contrast, SMA5J26AHE3_A/I is unidirectional, featuring a cathode band and conducting only in reverse bias - making it unsuitable for AC or floating-line protection but offering lower forward voltage drop in DC-only applications.
SMA5J26CAHE3_A/I 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 11.9A
- 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)
SMA5J26CAHE3_A/I FAQ
1.How can I place an order for SMA5J26CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26CAHE3_A/I 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 SMA5J26CAHE3_A/I reliable?
The price and inventory of SMA5J26CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J26CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26CAHE3_A/I?
SMA5J26CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26CAHE3_A/I 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 SMA5J26CAHE3_A/I?
For technical support, including SMA5J26CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26CAHE3_A/I requirements.
6.How does Aetrix verify that SMA5J26CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J26CAHE3_A/I 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 SMA5J26CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J26CAHE3_A/I?
All SMA5J26CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26CAHE3_A/I, 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 SMA5J26CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMA5J26CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J26CAHE3_A/I Tags
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