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Vishay General Semiconductor - Diodes Division SM6S24AHE3J/2D
- Part No.:
- SM6S24AHE3J/2D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM6S24AHE3J/2D.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,889
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Product details
Overview
SM6S24AHE3J/2D from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in DO-218AB package, rated for 24 V standoff voltage (VWM), 26.7–29.5 V breakdown (VBR), 38.9 V clamping at 118 A peak pulse current (10/1000 µs), and 4600 W peak pulse power-designed specifically for automotive load dump protection in engine control units and body electronics.
For engineers reviewing the SM6S24AHE3J/2D datasheet, SM6S24AHE3J/2D pinout, SM6S24AHE3J/2D application, or SM6S24AHE3J/2D equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C junction rating, low leakage (<10 µA at VWM), and ISO7637-2 compliance for harsh automotive transients.
Technical Context
This TVS diode operates as a unidirectional clamping device with anode-connected heatsink configuration, optimized for fast response to high-energy transients using passivated anisotropic rectifier technology. Its thermal resistance (RθJC = 0.95 °C/W) enables reliable power dissipation on infinite heatsink up to 6 W at 25 °C case temperature.
The device meets MSL Level 1 per J-STD-020 (245 °C peak reflow), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing-ensuring robust solderability and long-term reliability under automotive thermal cycling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range in normal circuit operation. |
| VBR (min/max) | 26.7 V / 29.5 V - Breakdown voltage range at 5 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 38.9 V - Clamping voltage at 118 A peak pulse (10/1000 µs); limits downstream voltage stress during load dump events. |
| PPPM (10/1000 µs) | 4600 W - Peak pulse power handling capability; supports high-energy ISO7637-2 Pulse 5a/b load dump waveforms. |
| TJ max. | 175 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating. |
| IFSM | 600 A - Non-repetitive forward surge current (8.3 ms half-sine); withstands high-current inductive switching surges. |
| Leakage @ VWM | <10 µA at 25 °C - Low reverse leakage preserves battery life and signal integrity in always-on vehicle modules. |
Pinout & Package
Package: DO-218AB surface-mount outline with metal heatsink acting as anode terminal; dimensions 15.4 × 9.5 mm (L × W), 3.8 mm height; RoHS-compliant, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Standard cathode connection for unidirectional clamping; connects to protected line (e.g., 12 V rail). |
| Lead 2 / Metal Heatsink | Anode | Primary thermal path and electrical anode terminal; must be connected to ground plane for effective heat dissipation and correct polarity operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| Junction passivation | Passivated anisotropic rectifier structure minimizes parameter drift and enhances long-term stability under thermal stress. |
| ISO7637-2 compliance | Meets Pulse 5a/b load dump requirements (10 ms exponential waveform) without external series impedance. |
| MSL Level 1 | Rated for reflow soldering up to 245 °C peak, eliminating moisture sensitivity concerns in automated assembly. |
| Low forward voltage drop | VF ≤ 1.9 V at 100 A (8.3 ms half-sine) - reduces conduction losses during high-current clamping events. |
Applications
| Engine Control Unit (ECU) Power Protection | Body Control Module (BCM) Input Protection |
|---|---|
Use Scenario: Protects microcontroller power rails and sensor interfaces from alternator load dump transients during battery disconnection/reconnection. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 12 V supply and ground, triggered within nanoseconds to limit voltage to 38.9 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies by clamping transients exceeding 12 V nominal by >200 %. | Use Scenario: Shields LIN bus transceivers and door lock actuators from inductive kickback generated by window motor or mirror actuator switching. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on 12 V input lines feeding DC-DC converters and level translators. Use Value: Enables robust operation at ambient temperatures up to 125 °C while maintaining <10 µA leakage to preserve sleep-mode current budgets. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) ECU Protection |
Use Scenario: Safeguards image sensor and SerDes interface power in rear-view or surround-view cameras exposed to under-hood voltage spikes. IC Role / Device Role / Timing Role: Primary transient suppression on 5 V or 3.3 V camera module input, mounted adjacent to connector for shortest possible trace length. Use Value: Delivers 4600 W pulse handling with 0.95 °C/W thermal resistance, enabling direct PCB copper pour heatsinking without discrete thermal pads. | Use Scenario: Protects motor driver ICs and position sensor supplies in EPS systems subjected to repeated load dump and jump-start conditions. IC Role / Device Role / Timing Role: High-reliability TVS on main 12 V bus upstream of buck regulators, leveraging DO-218AB's mechanical robustness and 175 °C rating. Use Value: Supports functional safety requirements (ASIL-B) via AEC-Q101 qualification and proven field reliability in >10-year automotive deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/5AT | DO-214AC (SMA) package; lower PPPM = 400 W; VC = 38.9 V at 10.3 A; RθJC ≈ 45 °C/W | Not suitable for load dump; limited to low-energy ESD/surge events in infotainment or telematics. | Select only for non-automotive, low-power applications where space constraints preclude DO-218AB. |
| TPSMD24A | DO-218AB package; same VWM/VBR; PPPM = 3000 W (10/1000 µs); VC = 38.9 V at 77 A | Lacks AEC-Q101 qualification and ISO7637-2 validation; intended for industrial/commercial use only. | Acceptable for cost-sensitive industrial controls but not for automotive OEM or Tier-1 designs requiring full qualification. |
Compared with SMAJ24A-E3/5AT and TPSMD24A, SM6S24AHE3J/2D uniquely combines AEC-Q101 qualification, 4600 W pulse rating, and DO-218AB thermal performance-making it the only option qualified for under-hood automotive load dump protection without derating or parallel devices.
Availability
SM6S24AHE3J/2D is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera power systems requiring stable component supply and long-term lifecycle support.
Supply support for SM6S24AHE3J/2D 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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The SM6SxxA family is engineered for automotive-grade transient suppression, emphasizing high-temperature operation (175 °C), AEC-Q101 compliance, and ISO7637-2 load dump resilience in under-hood power systems.
FAQ
What is the clamping voltage of the SM6S24AHE3J/2D at its rated peak pulse current?
The SM6S24AHE3J/2D has a maximum clamping voltage (VC) of 38.9 V when subjected to its specified peak pulse current of 118 A using the 10/1000 µs waveform. This value is measured per the test conditions defined in the Vishay datasheet document 88384 and ensures predictable voltage limiting during automotive load dump events. The SM6S24AHE3J/2D maintains this clamping performance across its full operating temperature range.
Is the SM6S24AHE3J/2D qualified for automotive applications?
Yes, the SM6S24AHE3J/2D is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO7637-2 load dump requirements, operates up to 175 °C junction temperature, and is rated for MSL Level 1 reflow. The "HE3" suffix confirms RoHS compliance and whisker resistance per JESD 201 Class 2-making SM6S24AHE3J/2D suitable for engine control, body electronics, and ADAS systems.
What does the "/2D" suffix indicate in SM6S24AHE3J/2D?
The "/2D" suffix in SM6S24AHE3J/2D specifies the packaging format: 13-inch diameter plastic tape and reel, with 750 units per reel and anode orientation toward the sprocket hole. This ensures correct automated placement during SMT assembly. The "J" denotes a specific manufacturing lot or revision code aligned with Vishay's internal traceability system for the HE3 base part.
How does the DO-218AB package of the SM6S24AHE3J/2D improve thermal performance compared to SMA (DO-214AC)?
The DO-218AB package of the SM6S24AHE3J/2D provides significantly better thermal performance than SMA, with a typical junction-to-case thermal resistance (RθJC) of 0.95 °C/W versus ~45 °C/W for SMA packages. This allows the SM6S24AHE3J/2D to dissipate 4600 W pulses without excessive temperature rise, whereas SMA devices like SMAJ24A-E3/5AT are limited to 400 W-making SM6S24AHE3J/2D essential for high-energy automotive transients.
Does the SM6S24AHE3J/2D have bidirectional polarity capability?
No, the SM6S24AHE3J/2D is unidirectional only, as confirmed in the Vishay datasheet. Its polarity is fixed with the metal heatsink serving as the anode and Lead 1 as the cathode. This configuration is optimized for clamping positive transients on grounded systems-standard for 12 V automotive power rails. For bidirectional protection, a separate device such as SM6S24AY would be required, but SM6S24AHE3J/2D is strictly unidirectional.
SM6S24AHE3J/2D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 118A
- Power - Peak Pulse:
- 4600W (4.6kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
SM6S24AHE3J/2D FAQ
1.How can I place an order for SM6S24AHE3J/2D through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6S24AHE3J/2D 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 SM6S24AHE3J/2D reliable?
The price and inventory of SM6S24AHE3J/2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6S24AHE3J/2D is usually 5 days.
3.What payment methods are accepted for SM6S24AHE3J/2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6S24AHE3J/2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6S24AHE3J/2D?
SM6S24AHE3J/2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6S24AHE3J/2D 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 SM6S24AHE3J/2D?
For technical support, including SM6S24AHE3J/2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6S24AHE3J/2D requirements.
6.How does Aetrix verify that SM6S24AHE3J/2D is sourced from the original manufacturer or authorized distributors?
All SM6S24AHE3J/2D 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 SM6S24AHE3J/2D meets industry standards.
7.What is the process for return or replacement of SM6S24AHE3J/2D?
All SM6S24AHE3J/2D units undergo pre-shipment inspection (PSI). If there is an issue with SM6S24AHE3J/2D, 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 SM6S24AHE3J/2D part is unused and in its original packaging.
Return procedure for SM6S24AHE3J/2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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