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Vishay General Semiconductor - Diodes Division SMC3K58CAHM3_A/H
- Part No.:
- SMC3K58CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K58CAHM3_A/H.pdf
- Description:
- 3KW, 58V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:898
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Product details
Overview
SMC3K58CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 3000 W peak pulse power (10/1000 μs), 58 V stand-off voltage (VWM), and 93.6 V maximum clamping voltage at 32.1 A IPPM - deployed on automotive power lines and sensor interfaces 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, this device supports AEC-Q101 qualified automotive systems requiring robust ESD immunity (30 kV HBM), low incremental surge resistance, and compliance with ISO 16750-2 Pulse b load dump events in 12 V battery architectures.
Technical Context
This TVS diode operates bidirectionally with breakdown voltage VBR of 64.4–71.2 V at 1 mA test current, enabling symmetrical clamping across positive and negative transients. Its thermal resistance junction-to-mount (RthJM) is 4.0 °C/W, supporting high-power transient dissipation without thermal runaway under repetitive surge conditions.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Its halogen-free, RoHS-compliant molding compound achieves UL 94 V-0 flammability rating and carries UL 497B safety recognition (E136766).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - reverse stand-off voltage; defines maximum continuous operating voltage before significant leakage begins. |
| VBR min/max | 64.4 V / 71.2 V - breakdown voltage range at 1 mA; ensures reliable turn-on within defined tolerance for transient suppression. |
| VC @ IPPM | 93.6 V at 32.1 A - clamping voltage during 10/1000 μs surge; limits downstream voltage stress to safe levels for protected ICs. |
| PPPM | 3000 W - peak pulse power handling (10/1000 μs); enables survival of high-energy automotive load dump and switching spikes. |
| ESD Rating | 30 kV - human body model (HBM) contact/air discharge; provides robust electrostatic immunity for exposed signal/power lines. |
| TJ max | +175 °C - maximum junction temperature; supports operation in under-hood automotive environments with minimal derating. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for automated assembly and thermal relief. |
Pinout & Package
SMC3K58CAHM3_A uses a 2-terminal SMC (DO-214AB) package with no polarity marking for bidirectional operation. Terminals are matte tin-plated leads compatible with standard reflow profiles and J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional transient path | Both terminals serve as symmetrical conduction paths; no DC polarity dependency - ideal for AC-coupled or floating signal lines. |
| Cathode/Anode (unmarked) | Bidirectional transient path | Identical electrical role to first terminal; enables placement without orientation check during automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during fast transients - critical for protecting 60 V-rated MOSFETs and CAN transceivers. |
| MSL Level 1 rating | Enables unlimited floor life and direct placement into reflow ovens without baking - reduces manufacturing overhead. |
| UL 497B recognition (E136766) | Confirms compliance with safety standards for primary/secondary circuit protection in industrial and automotive power supplies. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and eliminates corrosive halogen emissions during end-of-life PCB recycling. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Installed across 12 V battery feed to ECUs and body control modules to suppress ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump). IC Role / Device Role / Timing Role: Bidirectional clamping element that activates within <1 ns to limit line voltage to ≤93.6 V during 32.1 A surges. Use Value: Prevents latch-up and gate oxide damage in downstream 60 V-rated power MOSFETs and microcontrollers. |
Use Scenario: Placed on analog input lines of pressure/temperature sensors in factory automation PLCs exposed to relay coil kickback. IC Role / Device Role / Timing Role: Fast-response shunt protector that clamps transients before they reach precision ADC front-ends or op-amp buffers. Use Value: Maintains signal integrity by limiting induced noise to <93.6 V while adding <1 pF junction capacitance at zero bias. |
| Telecom Power Supply Input | Automotive CAN Bus Line Protection |
|
Use Scenario: Mounted at AC/DC converter input stage in telecom base station power supplies to absorb lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: High-energy crowbar device rated for 30 kW (8/20 μs) pulses - handles worst-case surge waveforms without degradation. Use Value: Extends mean time between failures (MTBF) by eliminating repeated thermal stress on upstream rectifiers and bulk capacitors. |
Use Scenario: Integrated into CAN FD transceiver interface circuits in ADAS domain controllers to meet ISO 11898-2 EMC requirements. IC Role / Device Role / Timing Role: Secondary-level protector working with common-mode chokes to suppress differential-mode ESD events up to ±30 kV. Use Value: Ensures CAN bus uptime during vehicle assembly ESD events and roadside electromagnetic interference without protocol disruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA | Same VWM (58 V) and VC (93.6 V), but lower PPPM (400 W) and smaller SMA package (DO-214AC); RthJA = 110 °C/W vs. 90 °C/W. | Limited to low-energy consumer electronics; unsuitable for automotive load dump or ISO 7637-2 Pulse 1/2a. | Select SMC3K58CAHM3_A when system-level surge energy exceeds 400 W or AEC-Q101 qualification is mandatory. |
| 1.5KE58CA | Higher VBR (64.6–71.4 V), same VWM (58 V), but through-hole DO-201AD package; PPPM = 1500 W (10/1000 μs); no AEC-Q101 or MSL Level 1 rating. | Requires manual insertion or wave soldering; not suitable for high-volume SMT production or under-hood thermal environments. | Choose SMC3K58CAHM3_A for automated assembly, space-constrained PCBs, and automotive-grade thermal/reliability requirements. |
Compared with SMAJ58CA and 1.5KE58CA, SMC3K58CAHM3_A delivers 7.5× higher peak pulse power in an AEC-Q101-qualified SMT package with superior thermal performance (RthJM = 4.0 °C/W), making it the only option capable of surviving repeated ISO 7637-2 Pulse 2a events in engine control units.
Availability
SMC3K58CAHM3_A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, and telecom power supply inputs requiring stable component supply with full traceability and long-term lifecycle support.
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, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMC3KxxCAHM3_A series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for AEC-Q101-compliant automotive transient suppression with enhanced clamping consistency and surge endurance in harsh environments.
FAQ
What is the maximum clamping voltage of SMC3K58CAHM3_A at its rated peak pulse current?
The maximum clamping voltage (VC) of SMC3K58CAHM3_A is 93.6 V at a peak pulse current (IPPM) of 32.1 A under the 10/1000 μs waveform condition. This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during standardized surge events such as ISO 7637-2 Pulse 1 and Pulse 2a. The SMC3K58CAHM3_A maintains this clamping performance across its full operating temperature range of –55 °C to +175 °C.
Is SMC3K58CAHM3_A qualified for automotive applications?
Yes, SMC3K58CAHM3_A is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. It meets ISO 7637-2 (Pulse 1, 2a, 3a, 3b) and ISO 16750-2 (Pulse b) transient immunity standards, and its construction - halogen-free molding compound, matte tin-plated leads, and MSL Level 1 rating - supports reflow compatibility and long-term reliability in automotive ECUs. The SMC3K58CAHM3_A data sheet confirms qualification per AEC-Q101 Rev D.
What does the "HM3_A" suffix indicate in SMC3K58CAHM3_A?
The "HM3_A" suffix in SMC3K58CAHM3_A denotes Vishay's high-reliability, halogen-free, RoHS-compliant variant with JESD 201 Class 2 whisker resistance and UL 497B safety recognition (file E136766). The "H" indicates halogen-free material, "M3" specifies matte tin plating meeting J-STD-002, and "_A" identifies the revision-controlled packaging format - distinct from non-A versions lacking full automotive qualification documentation.
Can SMC3K58CAHM3_A be used in bidirectional signal line protection?
Yes, SMC3K58CAHM3_A is inherently bidirectional and requires no polarity marking, making it suitable for protecting AC-coupled or floating differential signal lines such as RS-485, CAN, or sensor bridges. Its symmetrical VBR (64.4–71.2 V) and VC characteristics ensure equal clamping for both positive and negative transients, and its low junction capacitance (<1 pF at zero bias) avoids signal distortion in high-speed interfaces. The SMC3K58CAHM3_A datasheet confirms bidirectional operation in all electrical specifications tables.
What is the thermal resistance profile of SMC3K58CAHM3_A?
SMC3K58CAHM3_A has a junction-to-mount thermal resistance (RthJM) of 4.0 °C/W and a junction-to-ambient resistance (RthJA) of 90 °C/W when mounted on a standard FR4 PCB per JEDEC 51-2A. This low RthJM enables efficient heat transfer to the PCB copper pour or heatsink, supporting sustained surge handling without thermal runaway. The SMC3K58CAHM3_A thermal curves (Fig. 2 and Fig. 6) validate stable operation up to 175 °C junction temperature under repetitive 10/1000 μs pulses.
SMC3K58CAHM3_A/H 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/H FAQ
1.How can I place an order for SMC3K58CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K58CAHM3_A/H 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/H reliable?
The price and inventory of SMC3K58CAHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMC3K58CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K58CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K58CAHM3_A/H?
SMC3K58CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K58CAHM3_A/H 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/H?
For technical support, including SMC3K58CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K58CAHM3_A/H requirements.
6.How does Aetrix verify that SMC3K58CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC3K58CAHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMC3K58CAHM3_A/H?
All SMC3K58CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K58CAHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMC3K58CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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