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Vishay General Semiconductor - Diodes Division 5KASMC17AHM3_A/I
- Part No.:
- 5KASMC17AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC17AHM3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,738
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Product details
Overview
5KASMC17AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 17 V stand-off voltage, 19.9 V nominal breakdown voltage at 1 mA, 27.6 V maximum clamping voltage at 181.2 A peak pulse current, and 5000 W peak pulse power with 10/1000 μs waveform. It operates up to 185 °C junction temperature and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the 5KASMC17AHM3_A/I datasheet, 5KASMC17AHM3_A/I pinout, 5KASMC17AHM3_A/I application, or 5KASMC17AHM3_A/I equivalent, key selection criteria include clamping performance under 181.2 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity, MSL Level 1 rating, and halogen-free RoHS-compliant construction per HM3 suffix.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and fast transient response. Its junction design enables reliable operation at TJ = 185 °C and meets AEC-Q101 stress test requirements for automotive-grade reliability.
The device delivers 5000 W peak pulse power handling with low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.38). It exhibits 0.082 %/°C typical temperature coefficient of VBR, enabling predictable voltage behavior across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/typ/max) | 18.9 / 19.9 / 20.9 V at 1 mA - Ensures precise breakdown initiation under ESD/surge events |
| VC @ IPPM | 27.6 V at 181.2 A - Limits downstream voltage stress during 10/1000 μs transients |
| PPPM | 5000 W - Supports robust protection against high-energy load-switching spikes |
| TJ max | +185 °C - Enables deployment in under-hood automotive environments without derating |
| Package | SMC (DO-214AB) - Industry-standard surface-mount outline with 0.320" x 0.246" footprint and cathode band marking |
| Qualification | AEC-Q101 qualified - Validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMC (DO-214AB), molded case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected circuit ground or low-side reference; defines unidirectional conduction path |
| Cathode | Current exit terminal during clamping | Connected to protected line (e.g., CAN_H, LIN, sensor supply); marked by visible band on package body |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable leakage (<2 μA at VWM) and long-term reliability at 185 °C |
| Clamping performance | 27.6 V clamping at 181.2 A enables effective protection of 24 V automotive ICs and MOSFETs |
| Thermal capability | RθJA = 100 °C/W allows operation on standard PCB pads without heatsinking in most automotive modules |
| Manufacturing compliance | HM3 suffix confirms halogen-free, RoHS-compliant, and JESD 201 Class 2 whisker-tested construction |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs, lighting modules, and body control units from load-dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 17 V while remaining non-conductive during normal operation. Use Value: Withstands 5000 W pulses and maintains clamping below 27.6 V, preventing damage to downstream regulators and microcontrollers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation equipment exposed to motor noise and relay switching. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal lines or single-ended output to suppress EFT and surge coupling. Use Value: 0.082 %/°C VBR tempco ensures stable protection threshold across -40 to +125 °C ambient, critical for precision sensing. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing 24–48 V DC inputs of base station power supplies and PoE injectors against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on input stage, coordinated with upstream fuses and secondary-stage TVS arrays. Use Value: MSL Level 1 rating and 260 °C reflow compatibility enable direct placement in high-volume telecom assembly lines. | Use Scenario: Shielding BLDC motor driver ICs and gate drivers in smart home appliances from back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Fast-response TVS mounted adjacent to motor terminals to limit voltage overshoot during MOSFET turn-off. Use Value: 181.2 A peak surge current rating handles repetitive 10/1000 μs transients common in brushed and brushless motor applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17A | Lower PPPM (600 W), smaller SMB package, VC = 27.6 V at 21.5 A | Not suitable for 5000 W surge events; limited to lower-energy consumer interfaces | Select only when system-level surge testing validates ≤600 W requirement and space constraints favor SMB |
| 5.0SMDJ17A | Same VWM/VBR, higher PPPM (5000 W), larger SMC-compatible package but different thermal resistance (RθJA = 120 °C/W) | Requires larger pad layout; less efficient heat dissipation than 5KASMC17AHM3_A/I | Use where legacy 5.0SMDJ footprint exists, but verify thermal margin given higher RθJA |
Compared with SMBJ17A and 5.0SMDJ17A, the 5KASMC17AHM3_A/I provides identical clamping voltage at significantly higher surge current (181.2 A vs. 21.5 A or 172 A), superior thermal resistance (100 °C/W), and AEC-Q101 qualification-making it the preferred choice for automotive and industrial 24 V systems requiring validated high-reliability surge immunity.
Availability
5KASMC17AHM3_A/I is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface protection, telecom DC input protection, and consumer appliance motor drive protection requiring stable component supply and full traceability.
Supply support for 5KASMC17AHM3_A/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade components.
The 5KASMC series is part of Vishay's PAR® (Protection Against Reality) TVS platform, engineered specifically for harsh-environment transient suppression in automotive, industrial, and telecom infrastructure where sustained 185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of the 5KASMC17AHM3_A/I under a 10/1000 μs surge?
The 5KASMC17AHM3_A/I has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current of 181.2 A with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 89432 and ensures downstream components remain within safe voltage limits during high-energy transients. The 5KASMC17AHM3_A/I achieves this with low incremental surge resistance and stable junction characteristics.
Is the 5KASMC17AHM3_A/I suitable for automotive applications?
Yes, the 5KASMC17AHM3_A/I is AEC-Q101 qualified and rated for TJ = 185 °C, making it suitable for under-hood and chassis-mounted automotive modules. Its unidirectional configuration, 17 V stand-off voltage, and 27.6 V clamping align with ISO 7637-2 and ISO 16750-2 surge test requirements. The HM3 suffix confirms halogen-free, RoHS-compliant, and whisker-tested construction required for modern automotive BOMs.
What does the "HM3_A/I" suffix indicate in 5KASMC17AHM3_A/I?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified molding compound and plating process; "A" is the revision code; "I" specifies packaging in 13-inch tape-and-reel format with 3500 units per reel. This distinguishes it from the "H" variant (7-inch reel, 850 units) and confirms compliance with JESD 201 Class 2 whisker testing and J-STD-020 MSL Level 1 reflow profile.
How does the thermal resistance of the 5KASMC17AHM3_A/I affect PCB layout?
The 5KASMC17AHM3_A/I has a typical RθJA of 100 °C/W when mounted on the minimum recommended pad layout. To maintain TJ ≤ 185 °C under 6.5 W steady-state dissipation, designers must ensure adequate copper area (≥ 100 mm² per side) and avoid thermal bottlenecks. The 5KASMC17AHM3_A/I's low RθJM (20.8 °C/W) also supports use with internal ground planes for enhanced heat spreading in compact automotive modules.
Does the 5KASMC17AHM3_A/I have polarity markings, and how is it oriented on the PCB?
Yes, the 5KASMC17AHM3_A/I features a visible cathode band on the SMC (DO-214AB) package body. During PCB layout, the banded end must connect to the protected line (e.g., 24 V rail or signal line), while the unmarked end connects to ground. This orientation ensures unidirectional clamping action-conduction only occurs when the cathode is at higher potential than the anode, protecting against positive-going transients.
5KASMC17AHM3_A/I 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 181.2A
- Power - Peak Pulse:
- 5000W (5kW)
- 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)
5KASMC17AHM3_A/I FAQ
1.How can I place an order for 5KASMC17AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC17AHM3_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 5KASMC17AHM3_A/I reliable?
The price and inventory of 5KASMC17AHM3_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 5KASMC17AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 5KASMC17AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC17AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC17AHM3_A/I?
5KASMC17AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC17AHM3_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 5KASMC17AHM3_A/I?
For technical support, including 5KASMC17AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC17AHM3_A/I requirements.
6.How does Aetrix verify that 5KASMC17AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 5KASMC17AHM3_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 5KASMC17AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 5KASMC17AHM3_A/I?
All 5KASMC17AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC17AHM3_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 5KASMC17AHM3_A/I part is unused and in its original packaging.
Return procedure for 5KASMC17AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC17AHM3_A/I Tags
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