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Vishay General Semiconductor - Diodes Division SM8S60CAHM3/I
- Part No.:
- SM8S60CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
SM8S60CAHM3/I.pdf
- Description:
- 6600 W BI-DIRECTIONAL TVS IS DO-
- Quantity:
- Payment:
- Shipping:
Inventory:2,922
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Product details
Overview
SM8S60CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount PAR® transient voltage suppressor (TVS) in DO-218AC package, rated for 60 V standoff voltage (VWM), 66.7–73.7 V breakdown (VBR), and 6600 W peak pulse power (10/1000 μs). It delivers 68.2 A peak pulse current and clamps to ≤96.8 V under surge, meeting AEC-Q101 qualification and ISO 7637-2/16750-2 for automotive load dump protection.
For engineers reviewing the SM8S60CAHM3/I datasheet, SM8S60CAHM3/I pinout, SM8S60CAHM3/I application, or SM8S60CAHM3/I equivalent, this device is selected for high-reliability 12 V/24 V automotive power rail protection where TJ = 175 °C operation, low leakage (<10 μA at VWM), and MSL Level 1 solderability are required.
Technical Context
The SM8S60CAHM3/I operates as a bidirectional avalanche diode-based TVS, leveraging silicon junction passivation for stable clamping across -55 °C to +175 °C. Its DO-218AC package integrates a metal heatsink terminal for low RθJM (0.35 °C/W), enabling high thermal efficiency during repetitive surge events.
It meets ISO 7637-2 Pulse 5a (load dump) and ISO 16750-2 supply voltage transients with defined clamping performance at IPPM. The HM3 suffix confirms halogen-free, RoHS-compliant construction, JESD 201 Class 2 whisker resistance, and AEC-Q101 qualification - all verified per document 98229.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/typ/max) | 66.7 / 70.2 / 73.7 V - guaranteed avalanche initiation range at 5 mA test current |
| VC @ IPPM | ≤96.8 V - clamped voltage at 68.2 A peak pulse current (10/1000 μs), defining worst-case rail overshoot |
| PPPM (10/1000 μs) | 6600 W - surge energy handling capacity critical for automotive load dump survival |
| ID @ VWM | <10 μA - ultra-low leakage preserves battery drain budget in always-on vehicle modules |
| TJ max | +175 °C - enables placement near hot engine control units without derating |
| RθJM | 0.35 °C/W - low junction-to-mount thermal resistance supports PCB copper pour heatsinking |
Pinout & Package
Package: DO-218AC - surface-mount, bidirectional, metal heatsink cathode/anode configuration with no polarity marking; meets UL 94 V-0, MSL Level 1 (245 °C peak), and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode (bidirectional) | Primary current entry point during positive transients; connects to protected line |
| Lead 2 / Metal Heatsink | Cathode (bidirectional) & Thermal Path | Current return path during negative transients; primary thermal interface to PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| Bidirectional clamping | Protects against both positive and negative voltage transients without external polarity management |
| 6600 W peak pulse rating | Withstands ISO 7637-2 Pulse 5a load dump surges up to 120 V/350 ms on 12 V systems |
| Low RθJM (0.35 °C/W) | Enables >8 W steady-state dissipation on minimal copper area, reducing board space vs. SMC/SMA packages |
| Halogen-free, RoHS-compliant (HM3) | Complies with automotive material restrictions and end-of-life recycling mandates |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Protection |
|---|---|
Use Scenario: 12 V battery rail in gasoline/diesel ECUs exposed to alternator load dump transients up to 120 V. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Clamps to ≤96.8 V within nanoseconds, preventing damage to 5 V/3.3 V logic rails while sustaining 6600 W surge without degradation. | Use Scenario: CAN FD transceiver power and signal lines in BCMs subjected to coupled ESD and switching noise. IC Role / Device Role / Timing Role: Secondary rail protector decoupled from main power, suppressing common-mode transients before they couple into differential bus lines. Use Value: Low leakage (<10 μA) avoids CAN bias current errors; bidirectional symmetry ensures equal protection on VCC and ground-referenced nodes. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
Use Scenario: 12 V input to image sensor SoCs in front/rear cameras operating near engine bay heat sources. IC Role / Device Role / Timing Role: First-line transient suppressor on camera module PCB, mounted adjacent to connector entry point. Use Value: TJ = 175 °C rating allows direct placement near heat-generating image processors without thermal derating loss. | Use Scenario: High-current 24 V supply rail feeding three-phase gate drivers in EPS motor control units. IC Role / Device Role / Timing Role: Bulk TVS parallel to bulk capacitance, absorbing inductive kickback from H-bridge switching. Use Value: 68.2 A IPPM and 96.8 V VC ensure MOSFETs remain within SOA during 100 A+ motor current interruptions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60A-E3/5AT | Unidirectional; lower PPPM (400 W); SMA package; RθJA = 65 °C/W | Requires external polarity management; unsuitable for ISO 7637-2 Pulse 5a load dump | Select only for low-energy, single-polarity industrial I/O protection where cost outweighs automotive compliance. |
| TPSMD60A | Unidirectional; 600 W PPPM; DO-214AB package; no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness; limited to commercial-grade subsystems | Use only in non-safety-critical infotainment or telematics modules not requiring AEC-Q101 traceability. |
Compared with SMAJ60A-E3/5AT and TPSMD60A, the SM8S60CAHM3/I provides 16.5× higher surge power, bidirectional operation, AEC-Q101 validation, and superior thermal performance - making it the sole choice for production automotive power rail protection where reliability and specification compliance are mandatory.
Availability
SM8S60CAHM3/I is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera systems, and electric power steering designs requiring stable component supply, full AEC-Q101 traceability, and long-term lifecycle support.
Supply support for SM8S60CAHM3/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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SM8S series is designed specifically for high-energy automotive transient suppression, targeting load dump, jump start, and ISO 16750-2 compliance in 12 V and 24 V vehicle architectures.
FAQ
What is the clamping voltage of SM8S60CAHM3/I at its rated peak pulse current?
The SM8S60CAHM3/I has a maximum clamping voltage (VC) of 96.8 V when subjected to its rated peak pulse current (IPPM) of 68.2 A under the standard 10/1000 μs waveform. This value is measured per Figure 4 in Vishay document 98229 and defines the upper voltage limit imposed on protected circuitry during surge events. The SM8S60CAHM3/I maintains this clamping performance across its full operating temperature range.
Is SM8S60CAHM3/I suitable for 24 V automotive systems?
Yes, the SM8S60CAHM3/I is explicitly validated for 24 V automotive systems. With a 60 V standoff voltage (VWM) and 66.7–73.7 V breakdown range, it provides sufficient margin above nominal 24 V rails while meeting ISO 7637-2 Pulse 5a (load dump) and ISO 16750-2 requirements. Its 175 °C junction rating ensures stable operation near high-temperature zones such as power distribution units in commercial vehicles.
Does SM8S60CAHM3/I have a cathode band marking?
No, the SM8S60CAHM3/I is a bidirectional TVS diode and carries no cathode band marking. Per Vishay documentation, polarity is symmetrical - both terminals function identically as anode/cathode depending on transient polarity. The DO-218AC package uses Lead 1 and Lead 2/Metal Heatsink terminals without directional indicators, simplifying layout for AC-coupled or dual-rail protection schemes.
What does the 'HM3' suffix indicate in SM8S60CAHM3/I?
The 'HM3' suffix in SM8S60CAHM3/I denotes halogen-free, RoHS-compliant construction with matte tin-plated leads, JESD 201 Class 2 whisker resistance, and AEC-Q101 qualification. It confirms compliance with automotive material standards (Vishay doc 99912) and process controls for high-reliability soldering - including MSL Level 1 handling and 245 °C peak reflow tolerance per J-STD-020.
How does SM8S60CAHM3/I compare to SM8S60A in terms of polarity and application?
The SM8S60CAHM3/I is bidirectional ('CA'), while SM8S60A is unidirectional ('A'). This makes the SM8S60CAHM3/I suitable for protecting floating or AC-coupled lines - such as CAN bus power rails or dual-supply sensors - where transients may swing positive or negative relative to ground. The SM8S60A requires explicit polarity alignment and cannot suppress negative-going surges without additional circuitry.
SM8S60CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-218AB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 68.2A
- 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
SM8S60CAHM3/I FAQ
1.How can I place an order for SM8S60CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM8S60CAHM3/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 SM8S60CAHM3/I reliable?
The price and inventory of SM8S60CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM8S60CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM8S60CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM8S60CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM8S60CAHM3/I?
SM8S60CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM8S60CAHM3/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 SM8S60CAHM3/I?
For technical support, including SM8S60CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM8S60CAHM3/I requirements.
6.How does Aetrix verify that SM8S60CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM8S60CAHM3/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 SM8S60CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM8S60CAHM3/I?
All SM8S60CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM8S60CAHM3/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 SM8S60CAHM3/I part is unused and in its original packaging.
Return procedure for SM8S60CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM8S60CAHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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