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Vishay General Semiconductor - Diodes Division 3KASMC13AHM3_B/H
- Part No.:
- 3KASMC13AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC13AHM3_B/H.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,199
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Product details
Overview
3KASMC13AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in SMC (DO-214AB) package, rated for 13 V stand-off voltage (VWM), 15.2 V nominal breakdown (VBR), 3000 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - designed for automotive-grade overvoltage protection on power rails and signal lines of engine control units and ADAS sensor interfaces.
For engineers reviewing the 3KASMC13AHM3_B/H datasheet, 3KASMC13AHM3_B/H pinout, 3KASMC13AHM3_B/H application, or 3KASMC13AHM3_B/H equivalent, key selection criteria include clamping voltage at rated surge current, thermal resistance (RθJL = 18.3 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per ordering suffix HM3.
Technical Context
This device employs passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients while maintaining low incremental surge resistance and fast response time (<1 ns). Its unidirectional polarity and 13 V stand-off support DC-biased protection in automotive power supply inputs and CAN bus power rails.
The 3KASMC13AHM3_B/H operates across -65 °C to +185 °C junction temperature range and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is qualified to AEC-Q101 and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse operating voltage before clamping initiates; defines safe DC bias margin for 12 V automotive systems. |
| VBR (nom) | 15.2 V - nominal breakdown voltage at 1 mA test current; ensures reliable turn-on during ESD or load-dump events. |
| VC @ IPPM | 21.5 V - clamping voltage at peak pulse current (140 A); limits voltage seen by protected ICs during 3000 W transients. |
| PPPM | 3000 W - peak pulse power handling with 10/1000 μs waveform; supports ISO 7637-2 Pulse 5a load-dump immunity. |
| TJ max | +185 °C - maximum junction temperature rating; enables operation in under-hood environments without derating. |
| RθJL | 18.3 °C/W - junction-to-leads thermal resistance; allows direct PCB copper pour heat sinking without external heatsink. |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, HAST, and UHAST; required for ECUs and ADAS modules. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, with cathode indicated by color band. Dimensions: 6.22 mm × 5.59 mm × 2.46 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage rail; forms return path for clamped surge current. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., battery feed); conducts during overvoltage to clamp voltage to VC. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term stability under high-temperature bias stress (185 °C TJ). |
| Clamping performance | 21.5 V clamping at 140 A (10/1000 μs) ensures MOSFET gate oxide and MCU I/O pins remain within safe voltage margins. |
| Thermal robustness | RθJL = 18.3 °C/W enables >5 W sustained dissipation with minimal PCB copper area - no thermal vias required. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity, and mechanical shock - suitable for front-end power stages. |
| Halogen-free construction | HM3 suffix confirms compliance with IEC 61249-2-21 and JEDEC J-STD-020; supports green manufacturing requirements. |
Applications
| Engine Control Unit (ECU) Power Input | ADAS Camera Module Power Rail |
|---|---|
Use Scenario: Protects 12 V battery-fed microcontroller power supply against ISO 7637-2 Pulse 5a load-dump transients up to 60 V. IC Role / Device Role: Unidirectional TVS diode placed between battery rail and LDO input. Use Value: Clamps transient to ≤21.5 V within nanoseconds, preventing LDO overvoltage shutdown and MCU brownout. |
Use Scenario: Shields 5 V or 3.3 V camera module power input from coupled transients on adjacent high-current motor drivers. IC Role / Device Role: Secondary-level TVS on point-of-load regulator output. Use Value: Limits voltage excursion to <22 V during 10/1000 μs surges, preserving image sensor and ISP functionality. |
| Automotive Body Control Module (BCM) | Infotainment System USB Power Port |
Use Scenario: Safeguards LIN bus transceiver power pins from inductive switching noise generated by solenoid drivers. IC Role / Device Role: Localized TVS on 12 V supply rail feeding LIN transceivers. Use Value: Maintains VWM = 13 V margin above nominal 12 V system, ensuring no false triggering during cold-crank dips. |
Use Scenario: Suppresses ESD and cable discharge events on USB VBUS line connected to vehicle charging port. IC Role / Device Role: Primary ESD protection device on 5 V VBUS path before USB controller. Use Value: Withstands 30 kV contact ESD (IEC 61000-4-2) and clamps to <22 V, protecting USB PHY and power switch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13AHE3_A/H | Same VWM (13 V), lower PPPM (400 W), smaller SMA package (DO-214AC), RθJL = 40 °C/W | Limited to low-energy transients (e.g., ESD only); not suitable for load-dump or ISO 7637-2 Pulse 5a | Select when space-constrained and surge energy is <50 mJ; avoid for battery-rail protection. |
| SMCJ13AHM3_A/H | Same VWM (13 V), identical SMC package and PPPM (3000 W), but HE3 suffix (not HM3); RoHS-compliant but not halogen-free | Matches 3KASMC13AHM3_B/H electrically and thermally, but lacks halogen-free certification | Choose if halogen-free requirement is waived; otherwise 3KASMC13AHM3_B/H is preferred for Tier 1 automotive sourcing. |
Compared with SMAJ13AHE3_A/H and SMCJ13AHM3_A/H, the 3KASMC13AHM3_B/H uniquely combines AEC-Q101 qualification, halogen-free construction, and 185 °C TJ rating - making it the only option qualified for under-hood power rail protection where all three attributes are mandatory.
Availability
3KASMC13AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and telecom power supply designs requiring stable component supply, AEC-Q101 validation, and halogen-free compliance.
Supply support for 3KASMC13AHM3_B/H 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive qualification.
The 3KASMC13AHM3_B/H belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for harsh-environment transient suppression in automotive power distribution and industrial control systems.
FAQ
What is the clamping voltage of the 3KASMC13AHM3_B/H at its rated peak pulse current?
The 3KASMC13AHM3_B/H has a maximum clamping voltage (VC) of 21.5 V at its rated peak pulse current (IPPM) of 140 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components like MCUs and power switches remain within safe operating voltage limits during surge events.
Is the 3KASMC13AHM3_B/H qualified for automotive applications?
Yes, the 3KASMC13AHM3_B/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction. It is explicitly rated for TJ = 185 °C and tested per automotive reliability standards including temperature cycling, humidity, and mechanical shock - making it suitable for engine control units and ADAS modules.
What does the "HM3" suffix mean in 3KASMC13AHM3_B/H?
The "HM3" suffix in 3KASMC13AHM3_B/H denotes halogen-free, RoHS-compliant packaging with JESD 201 Class 2 whisker resistance and matte tin-plated leads. It distinguishes this variant from HE3 (RoHS-compliant but not halogen-free) and confirms compliance with automotive green manufacturing requirements.
How does the thermal resistance of the 3KASMC13AHM3_B/H affect PCB layout?
The 3KASMC13AHM3_B/H has a typical junction-to-leads thermal resistance (RθJL) of 18.3 °C/W, enabling effective self-heating management via direct copper connection to PCB pads. No thermal vias or large copper pours are required for 6 W continuous dissipation, simplifying layout for space-constrained automotive modules.
Can the 3KASMC13AHM3_B/H replace the SMAJ13AHE3_A/H in existing designs?
No - the 3KASMC13AHM3_B/H cannot serve as a drop-in replacement for SMAJ13AHE3_A/H due to different package (SMC vs. SMA), higher power rating (3000 W vs. 400 W), and distinct thermal characteristics. Layout redesign and surge energy validation are required; it is not a pin-compatible upgrade.
3KASMC13AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 140A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3KASMC13AHM3_B/H FAQ
1.How can I place an order for 3KASMC13AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC13AHM3_B/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 3KASMC13AHM3_B/H reliable?
The price and inventory of 3KASMC13AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC13AHM3_B/H is usually 5 days.
3.What payment methods are accepted for 3KASMC13AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC13AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC13AHM3_B/H?
3KASMC13AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC13AHM3_B/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 3KASMC13AHM3_B/H?
For technical support, including 3KASMC13AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC13AHM3_B/H requirements.
6.How does Aetrix verify that 3KASMC13AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC13AHM3_B/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 3KASMC13AHM3_B/H meets industry standards.
7.What is the process for return or replacement of 3KASMC13AHM3_B/H?
All 3KASMC13AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC13AHM3_B/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 3KASMC13AHM3_B/H part is unused and in its original packaging.
Return procedure for 3KASMC13AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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