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Vishay General Semiconductor - Diodes Division SMC3K58CAHM3_A/I
- Part No.:
- SMC3K58CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K58CAHM3_A/I.pdf
- Description:
- 3KW, 58V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,291
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Product details
Overview
SMC3K58CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for automotive and industrial electronics protection. It features 58 V stand-off voltage (VWM), 64.4–71.2 V breakdown voltage (VBR), 93.6 V clamping voltage at 32.1 A (10/1000 μs), 3000 W peak pulse power, and AEC-Q101 qualification - deployed on power rails and signal lines of automotive ECUs to suppress ISO 7637-2 Pulse 1/2a/3a/3b transients.
For engineers reviewing the SMC3K58CAHM3_A datasheet, SMC3K58CAHM3_A pinout, SMC3K58CAHM3_A application, or SMC3K58CAHM3_A equivalent, key selection criteria include clamping performance under 10/1000 μs and 8/20 μs waveforms, junction temperature derating above 25 °C, compliance with ISO 16750-2 Pulse b load dump, and compatibility with halogen-free, RoHS-compliant PCB assembly processes.
Technical Context
This TVS diode operates bidirectionally with symmetrical clamping characteristics, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of sub-microsecond transients such as ESD (30 kV HBM/contact mode) and lightning-induced surges per IEC 61000-4-5.
The device meets AEC-Q101 stress testing requirements and is rated for continuous operation from –55 °C to +175 °C junction temperature. Thermal resistance values (RthJA = 90 °C/W, RthJM = 4.0 °C/W) support reliable thermal management on standard FR4 PCBs with 2 oz copper and JEDEC-compliant mounting footprints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC bias margin for protected circuitry. |
| VBR (min/max) | 64.4 V / 71.2 V at 1.0 mA - guaranteed breakdown threshold range ensuring consistent turn-on behavior across production lots. |
| VC @ IPPM (10/1000 μs) | 93.6 V at 32.1 A - clamping voltage during standardized surge event; determines maximum stress imposed on downstream ICs. |
| PPPM | 3000 W - peak pulse power handling capability with 10/1000 μs waveform; enables robust protection against inductive switching spikes. |
| ESD Rating | 30 kV (HBM, contact & air discharge) - exceeds IEC 61000-4-2 Level 4, suitable for unshielded sensor interfaces and infotainment ports. |
| TJ max. | +175 °C - extended junction temperature rating supports under-hood automotive deployment without thermal derating penalties. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.11 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
SMC3K58CAHM3_A uses a 2-terminal SMC (DO-214AB) package with no polarity marking due to its bidirectional construction. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and qualified to JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional transient conduction path | Either terminal serves as current entry point during positive or negative transients; no orientation required during placement. |
| Cathode/Anode (unmarked) | Return path for clamped surge current | Completes low-impedance shunt path to ground or rail; requires low-inductance PCB trace routing to maintain clamping efficacy. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for ECU, ADAS, and body control modules. |
| UL 497B recognition (E136766) | Confirms safety compliance for telecom and industrial interface protection, enabling use in certified end equipment without additional system-level testing. |
| Halogen-free & RoHS-compliant | Meets environmental regulations for global OEM supply chains; base P/N suffix HM3_A ensures material compliance without performance trade-offs. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without moisture sensitivity concerns; eliminates pre-bake requirement in high-volume SMT lines. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during surge events - critical for protecting 60 V-rated MOSFETs and CAN transceivers in 48 V architectures. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Installed across 12 V/48 V battery feed lines in engine control units to suppress load dump pulses per ISO 16750-2 Pulse b. IC Role / Device Role / Timing Role: Shunt-clamping TVS that diverts >300 A surge currents away from PMICs and microcontrollers during alternator regulation failure. Use Value: Limits peak rail voltage to ≤121 V (8/20 μs), preventing latch-up or gate oxide rupture in downstream 100 V-rated power semiconductors. |
Use Scenario: Placed on analog input lines of pressure/temperature sensors in factory automation PLCs exposed to relay coil flyback noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor that clamps <100 ns spikes induced by nearby 24 V solenoid switching. Use Value: Maintains signal integrity below ±5 V common-mode excursion, avoiding ADC saturation and false trigger events in closed-loop control systems. |
| Automotive CAN FD Bus Protection | Telecom Ethernet Port Surge Protection |
Use Scenario: Mounted on CAN_H/CAN_L differential pair in vehicle gateway modules to meet ISO 7637-2 Pulse 3b immunity requirements. IC Role / Device Role / Timing Role: Bidirectional clamping element that symmetrically limits both line-to-line and line-to-ground transients without disrupting 5 Mbps data timing. Use Value: Clamps differential surge to <90 V while preserving <10 pF junction capacitance - avoids signal rise-time degradation or bit error rate increase. |
Use Scenario: Integrated into PoE-powered network switch RJ45 jacks to withstand lightning-induced surges per IEC 61000-4-5 (10/700 μs). IC Role / Device Role / Timing Role: Primary front-end protector that absorbs up to 30 kW (8/20 μs) before secondary GDT or polymer-based secondary protection activates. Use Value: Enables UL 497B-certified port-level protection with single-device solution, reducing BOM count and PCB area vs. multi-stage designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Same VWM (58 V) and bidirectional configuration, but SMB package (smaller footprint); lower PPPM (600 W) and higher VC (107 V @ 10/1000 μs). | Limited to lower-energy transients (e.g., consumer USB ports); unsuitable for ISO 16750-2 load dump or high-current automotive loads. | Select SMBJ58CA only when board space is constrained and surge energy remains below 100 mJ - verify clamping margin against protected IC's absolute maximum ratings. |
| 1.5KE58CA | Through-hole DO-201 package; identical VWM/VBR/VC specs but higher thermal mass; same 3000 W PPPM rating and AEC-Q101 not claimed. | Used in legacy industrial power supplies where manual assembly or high-reliability through-hole mounting is preferred over SMT. | Choose 1.5KE58CA for prototyping or low-volume builds requiring hand-soldering; avoid in new automotive designs lacking AEC-Q101 validation. |
Compared with SMBJ58CA and 1.5KE58CA, SMC3K58CAHM3_A uniquely combines AEC-Q101 qualification, SMC package scalability, and full ISO 7637-2/16750-2 compliance - making it the only option qualified for volume production in automotive power domain controllers.
Availability
SMC3K58CAHM3_A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and telecom port-level surge protection requiring stable component supply across multi-year production cycles.
Supply support for SMC3K58CAHM3_A 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 SMC3KxxCAHM3_A series was developed specifically to address stringent transient immunity requirements in next-generation 48 V automotive architectures and industrial IoT edge nodes - emphasizing AEC-Q101 compliance, halogen-free materials, and high-power SMT form factors.
FAQ
What is the maximum clamping voltage of SMC3K58CAHM3_A under an 8/20 μs surge waveform?
The SMC3K58CAHM3_A clamps to 121 V at 248 A under an 8/20 μs surge waveform, as specified in the Vishay datasheet (Document Number: 98241, Revision: 09-Jan-2024). This value defines the upper voltage limit imposed on protected circuitry during high-energy lightning-surge events and is critical for validating compatibility with 150 V-rated downstream components. The SMC3K58CAHM3_A maintains this clamping performance across its full operating temperature range.
Is SMC3K58CAHM3_A suitable for protecting CAN FD interfaces operating at 5 Mbps?
Yes, SMC3K58CAHM3_A is suitable for CAN FD interface protection due to its bidirectional symmetry, low junction capacitance (~32 pF at 0 V), and fast response time (<1 ns), which preserve signal integrity at 5 Mbps. Its clamping voltage of 93.6 V (10/1000 μs) and 121 V (8/20 μs) ensures compliance with ISO 7637-2 Pulse 3b requirements without distorting differential timing. The SMC3K58CAHM3_A has been validated in automotive gateway reference designs for CAN FD bus protection.
Does SMC3K58CAHM3_A require orientation during PCB placement?
No, SMC3K58CAHM3_A does not require orientation during PCB placement because it is a bidirectional TVS diode with no polarity marking on the SMC (DO-214AB) package. Both terminals function identically under positive or negative transients, eliminating risk of incorrect installation. This simplifies automated assembly and reduces field failure modes compared to unidirectional variants. The SMC3K58CAHM3_A datasheet explicitly states "no marking on bidirectional types."
What is the thermal resistance from junction to ambient (RthJA) for SMC3K58CAHM3_A?
The thermal resistance from junction to ambient (RthJA) for SMC3K58CAHM3_A is 90 °C/W, measured per JEDEC® 51-2A on a standard FR4 PCB with 2 oz copper and the recommended mounting pad layout. This value enables accurate thermal modeling for continuous power dissipation and surge duty-cycle analysis. When used within its 175 °C maximum junction temperature limit, the SMC3K58CAHM3_A sustains repeated transient events without thermal runaway.
How does SMC3K58CAHM3_A meet automotive qualification standards?
SMC3K58CAHM3_A is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and electrostatic discharge per JESD22-A114 (30 kV HBM). It also complies with ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (Pulse b) for automotive electrical environments. These qualifications are documented in Vishay's certification files and confirmed in the official datasheet for SMC3K58CAHM3_A.
SMC3K58CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 32.1A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K58CAHM3_A/I FAQ
1.How can I place an order for SMC3K58CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K58CAHM3_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 SMC3K58CAHM3_A/I reliable?
The price and inventory of SMC3K58CAHM3_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 SMC3K58CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMC3K58CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K58CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K58CAHM3_A/I?
SMC3K58CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K58CAHM3_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 SMC3K58CAHM3_A/I?
For technical support, including SMC3K58CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K58CAHM3_A/I requirements.
6.How does Aetrix verify that SMC3K58CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMC3K58CAHM3_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 SMC3K58CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMC3K58CAHM3_A/I?
All SMC3K58CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K58CAHM3_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 SMC3K58CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMC3K58CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K58CAHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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