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Vishay General Semiconductor - Diodes Division SMA5J24AHE3_A/I
- Part No.:
- SMA5J24AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24AHE3_A/I.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,687
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Product details
Overview
SMA5J24AHE3_A/I 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 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR), 38.9 V clamping voltage at 12.9 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMA5J24AHE3_A/I datasheet, SMA5J24AHE3_A/I pinout, SMA5J24AHE3_A/I application, or SMA5J24AHE3_A/I equivalent, key selection criteria include clamping performance under 12.9 A surge, AEC-Q101 qualification status, unidirectional polarity marking, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its unidirectional configuration provides forward conduction capability up to 40 A IFSM (8.3 ms half-sine), while maintaining ≤1.0 μA reverse leakage at 24 V VWM.
Thermal design relies on RθJL = 25 °C/W junction-to-lead resistance and RθJA = 80 °C/W junction-to-ambient (on recommended pad layout). The device operates across –55 °C to +150 °C junction temperature range and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 24 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 26.7–29.5 V at 1 mA - guaranteed conduction onset range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 38.9 V at IPPM = 12.9 A - peak voltage seen by protected circuit during 500 W surge; limits stress on downstream ICs |
| PPPM (Peak Pulse Power) | 500 W (10/1000 μs) - energy-handling capacity for lightning/inductive-switching surges; validated on 5.0 mm × 5.0 mm pads |
| TJ max. | +150 °C - maximum junction temperature; enables use in under-hood automotive environments without derating |
| AEC-Q101 Qualified | Yes - qualified per stress test standard for automotive discrete semiconductors; base P/NHE3 suffix confirms compliance |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band at one end; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return; completes clamping loop during overvoltage events |
| Cathode | Reverse-biased terminal / Protected line connection | Connected to line being protected (e.g., 24 V rail); blocks normal operation but conducts during transients |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced degradation in harsh environments |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS sensors |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-related failure risk |
| 500 W surge capability | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surges in industrial and vehicle systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges above 38.9 V. Use Value: Limits voltage seen by MCU and CAN transceivers to safe levels during ISO 7637-2 Pulse 5a events without sacrificing response speed. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Standoff-connected TVS on 4–20 mA or 0–10 V output lines to absorb ESD and cable discharge events. Use Value: Maintains signal integrity by clamping transients within 1 ns while adding <1 pF capacitance at VWM. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Stage |
Use Scenario: Securing 48 V DC input of PoE-powered network switches against lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression device upstream of DC-DC converters and Ethernet PHYs. Use Value: Absorbs 500 W pulses without thermal runaway, enabling single-stage protection compliant with IEC 61000-4-5. |
Use Scenario: Shielding gate drivers and microcontrollers in smart washing machine motor inverters from inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS across H-bridge supply rails to clamp flyback spikes during MOSFET switching. Use Value: Prevents latch-up in logic ICs by limiting rail overshoot to ≤38.9 V during 40 A IFSM-rated surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J24AHM3_A/I | Halogen-free version; identical electrical specs and AEC-Q101 qualification | Required where halogen-free material compliance (IEC 61249-2-21) is mandated | Select SMA5J24AHM3_A/I when RoHS + halogen-free certification is required; otherwise SMA5J24AHE3_A/I suffices |
| SMCJ24AHE3/73 | Higher 1500 W PPPM rating in larger SMC (DO-214AB) package; same VWM/VBR/VC | Suitable for higher-energy surge environments where board space allows larger footprint | Choose SMCJ24AHE3/73 only if system-level testing requires >500 W surge handling; SMA5J24AHE3_A/I remains optimal for space-constrained designs |
Compared with SMA5J24AHM3_A/I, the SMA5J24AHE3_A/I offers identical surge performance with standard RoHS compliance but excludes halogen-free assurance; versus SMCJ24AHE3/73, it delivers the same clamping behavior in 40% smaller area at reduced power rating - making it ideal for compact automotive and industrial modules.
Availability
SMA5J24AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power supplies, and consumer appliance motor drives requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for SMA5J24AHE3_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 and automotive-grade qualification.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained automotive and industrial systems, balancing 500 W surge capability with MSL Level 1 reflow compatibility and AEC-Q101 validation.
FAQ
What is the clamping voltage of the SMA5J24AHE3_A/I under maximum rated surge current?
The SMA5J24AHE3_A/I has a maximum clamping voltage (VC) of 38.9 V when subjected to its peak pulse current (IPPM) of 12.9 A using a 10/1000 μs waveform. This value is measured at TA = 25 °C on the recommended 5.0 mm × 5.0 mm copper pad layout and defines the upper voltage limit imposed on protected circuits during standardized surge events. The SMA5J24AHE3_A/I maintains this clamping performance across its full operating temperature range.
Is the SMA5J24AHE3_A/I qualified for automotive applications?
Yes, the SMA5J24AHE3_A/I is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88875 datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for under-hood and cabin-mounted automotive electronics such as body control modules and ADAS sensor interfaces. The SMA5J24AHE3_A/I meets all requirements for Grade 1 (–40 °C to +125 °C ambient) and Grade 2 (–40 °C to +150 °C junction) operation.
What does the "_A/I" suffix mean in SMA5J24AHE3_A/I?
The "_A/I" suffix in SMA5J24AHE3_A/I indicates packaging and reel configuration: "A" denotes the revision code (Revision A per Vishay's ordering nomenclature), and "I" specifies 13-inch diameter plastic tape and reel with 7500 units per reel. This format aligns with Vishay's preferred ordering structure shown in the datasheet's Ordering Information table and ensures compatibility with high-volume SMT assembly lines requiring large-reel feeding.
How does the SMA5J24AHE3_A/I differ from bidirectional variants like SMA5J24CA?
The SMA5J24AHE3_A/I is unidirectional, meaning it conducts only in reverse bias above VBR and supports forward surge current (IFSM = 40 A), whereas SMA5J24CA is bidirectional with symmetrical clamping in both polarities and no forward surge rating. The SMA5J24AHE3_A/I includes a cathode band for polarity identification and is used where DC bias exists (e.g., 24 V rails), while SMA5J24CA suits AC-coupled or dual-rail applications like RS-485 data lines. Their VWM and VC values also differ due to structural asymmetry.
What is the thermal resistance profile of the SMA5J24AHE3_A/I?
The SMA5J24AHE3_A/I exhibits RθJL = 25 °C/W (junction-to-lead) and RθJA = 80 °C/W (junction-to-ambient) when mounted on the specified 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. These values enable accurate thermal modeling for sustained surge duty cycles and confirm suitability for environments up to +150 °C junction temperature. The low RθJL supports efficient heat transfer to PCB copper, reducing localized hot spots during repetitive transient events.
SMA5J24AHE3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 12.9A
- 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)
SMA5J24AHE3_A/I FAQ
1.How can I place an order for SMA5J24AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24AHE3_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 SMA5J24AHE3_A/I reliable?
The price and inventory of SMA5J24AHE3_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 SMA5J24AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J24AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24AHE3_A/I?
SMA5J24AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24AHE3_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 SMA5J24AHE3_A/I?
For technical support, including SMA5J24AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24AHE3_A/I requirements.
6.How does Aetrix verify that SMA5J24AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J24AHE3_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 SMA5J24AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J24AHE3_A/I?
All SMA5J24AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24AHE3_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 SMA5J24AHE3_A/I part is unused and in its original packaging.
Return procedure for SMA5J24AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J24AHE3_A/I Tags
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