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Vishay General Semiconductor - Diodes Division SM8S16A-7001HE4/2N
- Part No.:
- SM8S16A-7001HE4/2N
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S16A-7001HE4/2N.pdf
- Description:
- TVS DIODE 16VWM 26VC DO218AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SM8S16A-7001HE4/2N from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive load dump protection. It features a 16.0 V stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 6600 W peak pulse power (10/1000 μs), 254 A peak pulse current, and operates up to TJ = 175 °C - enabling robust clamping in 12 V automotive power systems.
For engineers reviewing the SM8S16A-7001HE4/2N datasheet, SM8S16A-7001HE4/2N pinout, SM8S16A-7001HE4/2N application, or SM8S16A-7001HE4/2N equivalent, key selection criteria include unidirectional polarity, DO-218AB package thermal performance (RθJC = 0.90 °C/W), ISO7637-2 compliance, AEC-Q101 qualification, and low leakage (≤10 μA at VWM).
Technical Context
The SM8S16A-7001HE4/2N uses passivated anisotropic rectifier technology to achieve stable clamping under high-temperature transients. Its unidirectional configuration and heatsink-anode polarity enable direct integration into high-side or ground-referenced protection paths with minimal forward voltage drop (VF ≤ 1.8 V at 100 A).
It delivers 6600 W surge capability per 10/1000 μs waveform and sustains 5200 W under longer 10/10,000 μs pulses - meeting stringent automotive load dump requirements. Thermal resistance of 0.90 °C/W (junction-to-case) supports reliable operation on copper heatsinks without derating below 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16.0 V - maximum reverse working voltage before clamping begins; defines safe operating range in 12 V automotive systems. |
| VBR (min/max) | 17.8 V / 19.7 V at IT = 5.0 mA - tight breakdown tolerance ensures predictable turn-on during transients. |
| VC @ IPPM | 26.0 V - clamping voltage at 254 A peak pulse; limits downstream IC stress during load dump events. |
| PPPM (10/1000 μs) | 6600 W - peak surge power handling capacity; exceeds ISO7637-2 Pulse 5a requirements. |
| TJ max. | 175 °C - enables operation in engine bay environments without thermal shutdown or degradation. |
| ID @ VWM | ≤10 μA - ultra-low leakage preserves battery life and avoids false triggering in always-on circuits. |
| RθJC | 0.90 °C/W - efficient heat transfer to PCB/heatsink; supports continuous 8 W dissipation with proper thermal design. |
Pinout & Package
Package: DO-218AB - thermally enhanced surface-mount case with metal heatsink terminal (anode), matte tin-plated leads, UL 94 V-0 molding compound, and MSL Level 1 rating (peak reflow 245 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Cathode | Connected to protected line (e.g., battery rail); carries full surge current during clamping. |
| Lead 2 / Metal Heatsink | Anode | Must be connected to system ground or low-impedance return path; serves as primary thermal conduction path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability across -55 °C to +175 °C operating range and lifetime vibration/shock profiles. |
| Junction passivation | Stable VBR and low leakage maintained after 1000+ surge cycles; prevents parameter drift in harsh environments. |
| ISO7637-2 compliance | Meets Pulse 5a (load dump) requirements up to 100 V/100 ms with external impedance network. |
| Low VF (≤1.8 V) | Minimizes forward conduction loss during overvoltage events; reduces I²R heating in high-current fault conditions. |
| MSL Level 1 | Zero floor life limitation; supports standard SMT reflow without baking or special handling. |
Applications
| Automotive Load Dump Protection | 12 V Power Rail Clamping |
|---|---|
Use Scenario: Protecting ECUs, body control modules, and infotainment systems from 12 V battery line transients caused by alternator load dump. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and ground, clamping surges above 26.0 V within nanoseconds. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to safe levels (<30 V), preventing latch-up or permanent damage. | Use Scenario: Safeguarding CAN transceivers, LIN interfaces, and sensor signal conditioning circuits powered from a shared 12 V supply. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input, coordinating with local ceramic decoupling to suppress fast-rising spikes. Use Value: Maintains functional safety integrity by ensuring power rail stays within 26.0 V clamping limit during repetitive switching transients. |
| Engine Control Unit Input Protection | Start-Stop System Voltage Regulation |
Use Scenario: Shielding fuel injection drivers, ignition coil controllers, and knock sensor amplifiers from cranking-induced voltage reversals and load dump. IC Role / Device Role / Timing Role: High-energy TVS mounted directly at ECU power entry point, leveraging DO-218AB heatsink for thermal stability. Use Value: Enables uninterrupted operation at TJ = 175 °C during extended engine runtime, with no derating required. | Use Scenario: Stabilizing power delivery in vehicles with regenerative braking and automatic engine shutoff, where battery voltage can swing from 6 V to 16 V. IC Role / Device Role / Timing Role: Standoff voltage (16.0 V) aligns with upper limit of start-stop battery envelope; clamps only during abnormal overvoltage events. Use Value: Prevents false resets or brownouts in microcontrollers by maintaining clean 12 V rail during transient excursions beyond nominal range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/57T | Lower PPPM (400 W vs. 6600 W); SMA package (RθJC ≈ 40 °C/W); VBR = 17.8–19.7 V same. | Not suitable for load dump; limited to ESD and low-energy transients in consumer electronics. | Select only for non-automotive, low-surge applications where space constraints prohibit DO-218AB. |
| TPSMD16A | Same DO-218AB package; lower clamping voltage (24.4 V); AEC-Q101 qualified; PPPM = 6600 W. | Compatible for load dump but optimized for faster response in hybrid electric vehicle architectures. | Prefer when tighter clamping margin (<25 V) is critical and layout allows identical footprint. |
Compared with SMAJ16A-E3/57T and TPSMD16A, the SM8S16A-7001HE4/2N uniquely combines automotive-grade surge capacity (6600 W), ultra-low thermal resistance (0.90 °C/W), and validated ISO7637-2 compliance - making it the only option among the three rated for under-hood load dump protection without external heatsinking.
Availability
SM8S16A-7001HE4/2N is available at Aetrix Electronics and suitable for automotive electronics, engine control units, and 12 V power rail protection requiring stable component supply across long production lifecycles.
Supply support for SM8S16A-7001HE4/2N 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 protection devices for automotive, industrial, and computing markets.
The SM8S series is part of Vishay's PAR® TVS platform, engineered specifically for high-energy automotive transients - emphasizing thermal robustness, AEC-Q101 compliance, and ISO7637-2 Pulse 5a performance.
FAQ
What is the clamping voltage of the SM8S16A-7001HE4/2N at its rated peak pulse current?
The SM8S16A-7001HE4/2N has a maximum clamping voltage (VC) of 26.0 V at its rated peak pulse current (IPPM) of 254 A under a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream circuitry will not experience voltages exceeding 26.0 V during specified surge events. The SM8S16A-7001HE4/2N maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C).
Is the SM8S16A-7001HE4/2N qualified for automotive use?
Yes, the SM8S16A-7001HE4/2N is AEC-Q101 qualified and explicitly designed for automotive applications including engine control units, body electronics, and infotainment systems. It meets ISO7637-2 load dump requirements and operates reliably from -55 °C to +175 °C. The SM8S16A-7001HE4/2N also complies with JESD201 Class 2 whisker testing and MSL Level 1 reflow specifications.
What package does the SM8S16A-7001HE4/2N use, and why is it important?
The SM8S16A-7001HE4/2N uses the DO-218AB package - a thermally optimized surface-mount case featuring an exposed metal heatsink terminal (anode). This design achieves a low junction-to-case thermal resistance of 0.90 °C/W, enabling efficient heat dissipation during high-energy transients. The SM8S16A-7001HE4/2N requires this package to sustain its 6600 W peak pulse power rating without thermal runaway.
How does the SM8S16A-7001HE4/2N differ from the SM8S16A variant without the "-7001HE4/2N" suffix?
The "-7001HE4/2N" suffix denotes specific packaging and compliance attributes: HE4 indicates RoHS-compliant, matte tin-plated leads; /2N specifies 13" tape-and-reel delivery with anode orientation toward sprocket holes. Electrically and thermally, the SM8S16A-7001HE4/2N is identical to base SM8S16A - all key parameters (VWM, VBR, VC, PPPM) match the datasheet values for SM8S16A. The SM8S16A-7001HE4/2N is fully interchangeable in circuit design.
Can the SM8S16A-7001HE4/2N be used in bidirectional configurations?
No, the SM8S16A-7001HE4/2N is unidirectional only, with polarity defined as anode = metal heatsink terminal and cathode = lead 1. It cannot clamp negative-going transients. For bidirectional protection, two SM8S16A-7001HE4/2N devices must be connected in series opposition, or a dedicated bidirectional TVS (e.g., SM8S16CA) should be selected. The SM8S16A-7001HE4/2N datasheet explicitly states "available in uni-directional polarity only."
SM8S16A-7001HE4/2N 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 254A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
SM8S16A-7001HE4/2N FAQ
1.How can I place an order for SM8S16A-7001HE4/2N through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S16A-7001HE4/2N 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 SM8S16A-7001HE4/2N reliable?
The price and inventory of SM8S16A-7001HE4/2N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM8S16A-7001HE4/2N is usually 5 days.
3.What payment methods are accepted for SM8S16A-7001HE4/2N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S16A-7001HE4/2N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S16A-7001HE4/2N?
SM8S16A-7001HE4/2N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S16A-7001HE4/2N 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 SM8S16A-7001HE4/2N?
For technical support, including SM8S16A-7001HE4/2N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S16A-7001HE4/2N requirements.
6.How does Aetrix verify that SM8S16A-7001HE4/2N is sourced from the original manufacturer or authorized distributors?
All SM8S16A-7001HE4/2N 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 SM8S16A-7001HE4/2N meets industry standards.
7.What is the process for return or replacement of SM8S16A-7001HE4/2N?
All SM8S16A-7001HE4/2N units undergo pre-shipment inspection (PSI). If there is an issue with SM8S16A-7001HE4/2N, 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 SM8S16A-7001HE4/2N part is unused and in its original packaging.
Return procedure for SM8S16A-7001HE4/2N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S16A-7001HE4/2N Tags
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