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Vishay General Semiconductor - Diodes Division 3KASMC14AHM3_B/H
- Part No.:
- 3KASMC14AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC14AHM3_B/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:173
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Product details
Overview
3KASMC14AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor in SMC (DO-214AB) package, rated for 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - designed for automotive-grade overvoltage protection of sensor signal lines and MOSFET gates.
For engineers reviewing the 3KASMC14AHM3_B/H datasheet, 3KASMC14AHM3_B/H pinout, 3KASMC14AHM3_B/H application, or 3KASMC14AHM3_B/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, clamping performance at 129 A IPPM, thermal resistance (RθJA = 77.5 °C/W), and halogen-free RoHS-compliant construction per ordering code HM3.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation under thermal stress. Its unidirectional polarity and 10/1000 μs waveform response enable precise clamping during inductive load switching transients without forward conduction interference.
Rated for TJ = –65 °C to +185 °C and qualified to AEC-Q101, it supports automotive under-hood environments where sustained high-temperature stability and MSL Level 1 moisture sensitivity compliance (260 °C reflow peak) are mandatory. The SMC package provides robust thermal dissipation with RθJL = 18.3 °C/W to leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias margin. |
| VBR (min/typ/max) | 15.6 / 16.4 / 17.2 V at 1.0 mA - Confirmed breakdown threshold ensures predictable turn-on during surge events. |
| VC at IPPM | 23.2 V at 129 A - Clamping voltage limits protected circuit stress during 3000 W transient absorption. |
| PPPM | 3000 W (10/1000 μs) - Peak surge power handling capability for automotive load-dump and ISO 7637-2 pulse 5a events. |
| TJ max. | +185 °C - Enables placement near high-temperature components (e.g., powertrain ECUs) without derating. |
| RθJA | 77.5 °C/W - Thermal resistance determines required PCB copper area for 6.0 W steady-state power dissipation. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, cathode indicated by color band. Complies with UL 94 V-0, J-STD-002 solderability, and JESD 22-B102 whisker testing (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping | Connected to protected line (e.g., sensor output); conducts surge current toward ground path. |
| Cathode | Current exit point during clamping | Connected to system ground or low-impedance return; establishes reference for unidirectional clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5 % over 1000 hrs at 150 °C, critical for long-life automotive modules. |
| 185 °C junction rating | Supports operation in engine control units and ADAS sensors without thermal shutdown or parameter shift. |
| 3000 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) up to 120 V/300 ms without failure. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (< 1 ns response time), protecting sensitive CMOS inputs. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Fulfills automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1). |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine management systems exposed to alternator load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤23.2 V during 129 A surges, preserving 12-bit ADC accuracy and preventing ESD-induced latch-up. |
Use Scenario: Shielding digital I/O lines of PLC modules from inductive kickback generated by solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff protection on 24 V DC control inputs prior to optocoupler isolation stage. Use Value: Absorbs 3000 W pulses without degradation, maintaining signal integrity across 10⁵+ switching cycles in factory automation. |
| Automotive Powertrain ECUs | Telecom Power Supply Rails |
|
Use Scenario: Safeguarding gate drivers and high-side switches in 48 V mild-hybrid battery management systems subjected to cold-crank and jump-start transients. IC Role / Device Role / Timing Role: Primary clamping device on 12 V auxiliary rail feeding MCU and CAN transceivers. Use Value: Operates reliably at 175 °C ambient with <1 μA leakage at 14 V, ensuring zero false triggering during extended high-temp operation. |
Use Scenario: Suppressing lightning-induced surges on -48 V telecom rectifier outputs feeding base station backplane logic. IC Role / Device Role / Timing Role: Secondary protection stage downstream of MOV-based primary suppression. Use Value: Provides precise 23.2 V clamping with <10 ns response, preventing damage to 3.3 V LDOs and FPGAs during multi-kV transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14AHE3_A/H | Same VWM (14 V), lower PPPM (400 W), SMC package, HE3 suffix (RoHS/AEC-Q101), higher IR (5 μA vs. 1 μA) | Lower energy handling; suitable only for non-automotive consumer/industrial use with milder transients | Select when cost sensitivity outweighs automotive qualification and 3000 W surge requirement. |
| SMCJ14AHE3_A/H | Same VWM (14 V), identical PPPM (3000 W), same SMC package, HE3 suffix, but not halogen-free (HM3-specific compliance) | Lacks halogen-free certification; acceptable for non-OEM industrial designs with equivalent thermal specs | Choose if halogen-free mandate is absent and AEC-Q101 qualification remains essential. |
Compared with SMAJ14AHE3_A/H and SMCJ14AHE3_A/H, the 3KASMC14AHM3_B/H uniquely combines AEC-Q101 qualification, halogen-free construction, and 185 °C operation - making it the only option qualified for next-generation automotive powertrain and ADAS modules requiring full material and thermal compliance.
Availability
3KASMC14AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive I/O, and telecom power supply rails requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for 3KASMC14AHM3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 3KASMC series belongs to Vishay's PAR® family of high-power TVS diodes engineered specifically for AEC-Q101-compliant automotive transient suppression with extended temperature range and halogen-free packaging.
FAQ
What is the clamping voltage of the 3KASMC14AHM3_B/H at its rated peak pulse current?
The 3KASMC14AHM3_B/H has a maximum clamping voltage (VC) of 23.2 V when subjected to its peak pulse current (IPPM) of 129 A under a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88480) and ensures protected circuits remain below critical voltage thresholds during surge events.
Is the 3KASMC14AHM3_B/H qualified to AEC-Q101?
Yes, the 3KASMC14AHM3_B/H is AEC-Q101 qualified. The HM3 suffix explicitly denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, validated across stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT).
What does the "HM3" suffix indicate in 3KASMC14AHM3_B/H?
The "HM3" suffix in 3KASMC14AHM3_B/H identifies the part as halogen-free, RoHS-compliant, and AEC-Q101 qualified. It distinguishes this variant from HE3 (RoHS/AEC-Q101 but not halogen-free) and confirms compliance with automotive OEM material standards such as GMW3172 and Ford WSS-M99P9999-A1.
What is the thermal resistance junction-to-ambient (RθJA) for the 3KASMC14AHM3_B/H?
The 3KASMC14AHM3_B/H has a typical thermal resistance junction-to-ambient (RθJA) of 77.5 °C/W when mounted on the minimum recommended pad layout per Vishay's datasheet. This value guides PCB copper area design to maintain safe junction temperatures under 6.0 W steady-state power dissipation.
Can the 3KASMC14AHM3_B/H be used in bidirectional configurations?
No, the 3KASMC14AHM3_B/H is unidirectional only, as confirmed in the Vishay datasheet. Its internal structure and polarity marking (cathode band) support clamping only in the reverse direction; bidirectional protection requires pairing two devices or selecting a dedicated bidirectional TVS like the SMBJ14CA.
3KASMC14AHM3_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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 129A
- 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 (SMCJ)
3KASMC14AHM3_B/H FAQ
1.How can I place an order for 3KASMC14AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC14AHM3_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 3KASMC14AHM3_B/H reliable?
The price and inventory of 3KASMC14AHM3_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 3KASMC14AHM3_B/H is usually 5 days.
3.What payment methods are accepted for 3KASMC14AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC14AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC14AHM3_B/H?
3KASMC14AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC14AHM3_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 3KASMC14AHM3_B/H?
For technical support, including 3KASMC14AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC14AHM3_B/H requirements.
6.How does Aetrix verify that 3KASMC14AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC14AHM3_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 3KASMC14AHM3_B/H meets industry standards.
7.What is the process for return or replacement of 3KASMC14AHM3_B/H?
All 3KASMC14AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC14AHM3_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 3KASMC14AHM3_B/H part is unused and in its original packaging.
Return procedure for 3KASMC14AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC14AHM3_B/H Tags
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