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Vishay General Semiconductor - Diodes Division SMA5J26AHE3_A/H
- Part No.:
- SMA5J26AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J26AHE3_A/H.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,651
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Product details
Overview
SMA5J26AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR), 42.1 V clamping voltage (VC) at 11.9 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J26AHE3_A/H datasheet, SMA5J26AHE3_A/H pinout, SMA5J26AHE3_A/H application, or SMA5J26AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below 26 V and rapidly transitions to low-impedance conduction during transients exceeding its breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1 ns), critical for protecting sensitive downstream components from inductive switching spikes and ESD events.
The device is rated for 500 W peak pulse power under standardized 10/1000 μs waveform conditions, with thermal resistance of 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead). Its AEC-Q101 qualification confirms suitability for automotive electronics where reliability under thermal cycling and mechanical stress is mandatory.
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 - guaranteed breakdown range at 1 mA test current; defines turn-on threshold consistency |
| VC @ IPPM | 42.1 V at 11.9 A - clamped voltage during 500 W surge; determines protected circuit's maximum transient exposure |
| PPPM | 500 W - peak pulse power handling capability per 10/1000 μs waveform; sets surge energy limit |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| MSL Level | Level 1 (260 °C peak reflow) - supports standard lead-free SMT assembly without preconditioning |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; unidirectional configuration only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return plane; forms clamping loop with cathode |
| Cathode | Reverse-biased terminal / surge input node | Connected to protected line (e.g., 24 V rail or sensor output); conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable leakage current (<1.0 μA) and long-term parameter stability across temperature and humidity |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving clamping precision for sensitive logic inputs |
| Automated placement compatibility | Standardized SMA footprint and tape-and-reel packaging (1800 pcs per 7″ reel) enable high-yield SMT production |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control units, body electronics, and ADAS sensors |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 60 V, 100 ms) on 24 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and DC/DC converter input stage. Use Value: Limits voltage seen by downstream regulators to ≤42.1 V during ISO 7637-2 Pulse 5a events, preventing latch-up or damage. | Use Scenario: Protects analog outputs of pressure/temperature sensors in factory automation PLC modules from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between sensor output line and ground, with 26 V VWM matching typical 20–24 V supply rails. Use Value: Clamps 1 kV EFT bursts to <42.1 V within <1 ns, preserving ADC accuracy and avoiding microcontroller reset triggers. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Guards -48 V telecom rectifier outputs against lightning-induced surges in central office equipment. IC Role / Device Role / Timing Role: Reverse-polarity TVS mounted on negative rail; cathode tied to -48 V line, anode to chassis ground. Use Value: Withstands 500 W pulses while maintaining <1.0 μA leakage at -48 V, ensuring no standby power drain or false triggering. | Use Scenario: Shields USB 2.0 data lines and VBUS in smart home hubs from ESD and hot-plug transients. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (one per line) with cathodes tied to respective signal lines and anodes grounded. Use Value: Provides 30 kV contact ESD immunity per IEC 61000-4-2 while adding <0.5 pF capacitance - negligible impact on 480 Mbps signaling integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J26AHM3_A/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | No functional difference; selected when halogen-free material compliance is required for end-product certification | Choose SMA5J26AHM3_A/H if IPC-1752 or EU RoHS Annex II mandates halogen-free bill-of-materials |
| SMCJ26AHE3/73 | Same VWM/VC but in larger SMC (DO-214AB) package; higher thermal mass (RθJA = 35 °C/W vs. 80 °C/W) | Better suited for higher average power dissipation or extended surge duty cycles; requires larger PCB footprint | Choose SMCJ26AHE3/73 when system-level thermal design cannot maintain SMA junction temperature below 150 °C under repeated surges |
Compared with SMA5J26AHE3_A/H, SMA5J26AHM3_A/H offers identical protection performance with halogen-free construction, while SMCJ26AHE3/73 trades compact size for superior thermal handling - enabling longer surge endurance in thermally constrained 24 V industrial controllers.
Availability
SMA5J26AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power systems, and consumer USB power delivery requiring stable component supply with full traceability and lifecycle management.
Supply support for SMA5J26AHE3_A/H 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, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained applications, targeting automotive, industrial, and telecom systems where AEC-Q101 validation and robust 500 W surge handling are essential.
FAQ
What is the maximum clamping voltage of the SMA5J26AHE3_A/H under a 500 W surge?
The SMA5J26AHE3_A/H has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current of 11.9 A - corresponding to a 500 W surge under the standardized 10/1000 μs waveform. This value is measured at TA = 25 °C on minimum recommended pad layout and defines the upper voltage limit imposed on protected circuits during transient events.
Is the SMA5J26AHE3_A/H suitable for automotive applications?
Yes, the SMA5J26AHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness, making it appropriate for engine control units, body control modules, and ADAS sensor power rails where reliability under harsh environmental conditions is mandatory.
What does the "_A/H" suffix mean in SMA5J26AHE3_A/H?
The "_A/H" suffix in SMA5J26AHE3_A/H indicates revision level "A" and packaging format "H", which corresponds to 7-inch diameter plastic tape-and-reel with 1800 units per reel. This ordering code aligns with Vishay's standard delivery mode for SMA5J26AHE3_A/H and ensures compatibility with automated pick-and-place equipment.
How does the SMA5J26AHE3_A/H compare to bidirectional TVS diodes like SMA5J26CA?
The SMA5J26AHE3_A/H is unidirectional and intended for DC line protection where polarity is fixed, whereas SMA5J26CA is bidirectional and suited for AC or dual-polarity signal lines. SMA5J26AHE3_A/H provides forward conduction capability (VF = 3.5 V at 25 A), while SMA5J26CA does not conduct in forward bias - making SMA5J26AHE3_A/H unsuitable for AC-coupled paths but optimal for 24 V power rail clamping.
What is the thermal resistance of the SMA5J26AHE3_A/H, and how does it affect layout design?
The SMA5J26AHE3_A/H 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. To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must provide adequate copper area and minimize trace length - underscoring the need for symmetric, low-inductance grounding to both terminals of the SMA5J26AHE3_A/H.
SMA5J26AHE3_A/H 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMA5J26AHE3_A/H FAQ
1.How can I place an order for SMA5J26AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J26AHE3_A/H 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 SMA5J26AHE3_A/H reliable?
The price and inventory of SMA5J26AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J26AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J26AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J26AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J26AHE3_A/H?
SMA5J26AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J26AHE3_A/H 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 SMA5J26AHE3_A/H?
For technical support, including SMA5J26AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J26AHE3_A/H requirements.
6.How does Aetrix verify that SMA5J26AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J26AHE3_A/H 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 SMA5J26AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J26AHE3_A/H?
All SMA5J26AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J26AHE3_A/H, 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 SMA5J26AHE3_A/H part is unused and in its original packaging.
Return procedure for SMA5J26AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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