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Vishay General Semiconductor - Diodes Division SMA5J24AHE3/5A
- Part No.:
- SMA5J24AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J24AHE3/5A.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,557
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Product details
Overview
SMA5J24AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V clamping voltage (VC) at 12.9 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J24AHE3/5A datasheet, SMA5J24AHE3/5A pinout, SMA5J24AHE3/5A application, or SMA5J24AHE3/5A equivalent, key selection criteria include verified clamping performance under 12.9 A surge, AEC-Q101 qualification status, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at 24 V) and fast response time (<1 ns), critical for protecting sensitive inputs against ESD and inductive switching spikes.
Thermal design relies on low RθJL (25 °C/W) and RθJA (80 °C/W), enabling reliable operation up to TJ = 150 °C. The device is rated for non-repetitive 40 A forward surge (IFSM, 8.3 ms half-sine) and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 38.9 V at 12.9 A - clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected ICs. |
| PPPM | 500 W - peak pulse power handling capability; supports robust protection against IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage at stand-off voltage; avoids unnecessary power loss or bias shift in precision circuits. |
| TJ max. | +150 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return plane; must be routed with minimal inductance for effective clamping. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., 24 V supply rail); polarity marking essential for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, body electronics, and ADAS modules. |
| Glass passivated junction | Stable VBR tolerance and low leakage over lifetime; eliminates risk of parametric drift due to moisture or contamination ingress. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH; supports standard SMT assembly without baking or dry pack requirements. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients; improves clamping consistency across varying surge amplitudes and waveshapes. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 24 V battery-supplied ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Unidirectional shunt TVS placed between 24 V rail and chassis ground. Use Value: Clamps transients to ≤38.9 V, preventing damage to 36 V-rated power management ICs and microcontrollers. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loops) connecting pressure sensors to PLCs in factory automation. IC Role / Device Role: Point-of-entry TVS on sensor-side PCB, mounted directly at connector. Use Value: Limits induced lightning/ESD surges to sub-40 V levels, preserving ADC input integrity and avoiding latch-up in op-amp front-ends. |
| Motor Drive Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: High-side gate driver ICs in BLDC inverters subjected to Miller-induced voltage spikes during fast switching. IC Role / Device Role: TVS across gate-to-source (G-S) of N-channel MOSFET drivers. Use Value: Sub-1 ns response prevents VGS excursion beyond ±20 V absolute maximum ratings, avoiding unintended turn-on or oxide breakdown. |
Use Scenario: -48 V DC input stage of telecom base station power supplies encountering AC-coupled surges and lightning-induced common-mode transients. IC Role / Device Role: Unidirectional TVS on negative rail relative to system ground. Use Value: Withstands 500 W pulses while maintaining <1 µA leakage at -48 V reverse bias, ensuring no standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ24A | Same SMA package, 24 V VWM, but lower PPPM (400 W) and higher VC (43.0 V at 11.8 A); not AEC-Q101 qualified. | Acceptable for commercial-grade industrial controls but unsuitable for automotive under-hood deployment. | Select SMA5J24AHE3/5A when AEC-Q101 compliance and 500 W surge margin are mandatory. |
| ON Semiconductor 1.5SMC24A | Same electrical specs (VWM = 24 V, VC = 38.9 V), but DO-214AB (SMB) package - 2.6 mm wider, requiring PCB layout change. | Higher thermal mass allows slightly better sustained surge handling, but incompatible with SMA footprint. | Choose SMA5J24AHE3/5A for drop-in replacement in existing SMA-layout designs with AEC-Q101 needs. |
Compared with SMAJ24A and 1.5SMC24A, SMA5J24AHE3/5A uniquely combines AEC-Q101 qualification, 500 W PPPM, and strict SMA (DO-214AC) footprint - making it the only option satisfying automotive OEM requirements without board redesign or derated surge performance.
Availability
SMA5J24AHE3/5A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, motor drive gate driver stages, and telecom DC power input stages requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMA5J24AHE3/5A 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 protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - particularly targeting 12 V/24 V automotive subsystems and ruggedized industrial power interfaces.
FAQ
What is the clamping voltage of SMA5J24AHE3/5A and how is it measured?
The clamping voltage (VC) of SMA5J24AHE3/5A is 38.9 V, measured at 12.9 A peak pulse current using a 10/1000 µs double-exponential waveform per IEC 61000-4-5. This value represents the maximum voltage seen across the device during standardized surge testing and directly determines the protection level provided to downstream components. The SMA5J24AHE3/5A achieves this clamping performance while maintaining low incremental surge resistance, ensuring consistent behavior across production lots.
Is SMA5J24AHE3/5A qualified for automotive applications?
Yes, SMA5J24AHE3/5A is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88875 datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD (HBM ≥ 8 kV). The device is approved for use in automotive powertrain, chassis, and body electronics where reliability under harsh thermal and electrical conditions is mandatory - unlike commercial-grade variants such as SMA5J24A-E3/5A.
What does the "HE3" and "/5A" suffix mean in SMA5J24AHE3/5A?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification, while "/5A" specifies packaging in 13-inch diameter plastic tape and reel containing 7500 units. This differs from "/61" (7-inch reel, 1800 units) and "HM3" (halogen-free variant). The HE3 designation confirms the device meets automotive reliability standards and environmental compliance requirements - critical for OEM procurement and PPAP documentation.
Can SMA5J24AHE3/5A be used in bidirectional configurations?
No, SMA5J24AHE3/5A is strictly unidirectional, as indicated by the "A" (not "CA") suffix and presence of cathode band marking. Bidirectional operation requires the CA suffix (e.g., SMA5J24CA), which has symmetrical breakdown in both polarities. Using SMA5J24AHE3/5A in reverse-biased AC applications would result in forward conduction and failure; always verify polarity alignment during PCB layout and assembly.
What is the thermal resistance and maximum junction temperature of SMA5J24AHE3/5A?
SMA5J24AHE3/5A has a typical junction-to-lead thermal resistance (RθJL) of 25 °C/W and junction-to-ambient resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" copper pads. Its maximum junction temperature (TJ max.) is +150 °C, enabling operation in under-hood automotive environments and high-ambient industrial enclosures. Derating curves in Figure 2 of the datasheet show usable power capacity decreases linearly above 25 °C ambient.
SMA5J24AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMA5J24AHE3/5A FAQ
1.How can I place an order for SMA5J24AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J24AHE3/5A 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 SMA5J24AHE3/5A reliable?
The price and inventory of SMA5J24AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J24AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J24AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J24AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J24AHE3/5A?
SMA5J24AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J24AHE3/5A 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 SMA5J24AHE3/5A?
For technical support, including SMA5J24AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J24AHE3/5A requirements.
6.How does Aetrix verify that SMA5J24AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J24AHE3/5A 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 SMA5J24AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J24AHE3/5A?
All SMA5J24AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J24AHE3/5A, 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 SMA5J24AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J24AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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