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Vishay General Semiconductor - Diodes Division 5KASMC22AHM3_A/I
- Part No.:
- 5KASMC22AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC22AHM3_A/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,293
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Product details
Overview
5KASMC22AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 22 V stand-off voltage (VWM), 25.7 V nominal breakdown (VBR), 5000 W peak pulse power (10/1000 μs), 140.8 V clamping voltage at 35.5 A surge current, and operation up to +185 °C junction temperature - deployed for automotive sensor line protection and MOSFET gate clamp circuits.
For engineers reviewing the 5KASMC22AHM3_A/I datasheet, 5KASMC22AHM3_A/I pinout, 5KASMC22AHM3_A/I application, or 5KASMC22AHM3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 100 °C/W junction-to-ambient thermal resistance, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. It delivers fast response time and excellent clamping performance under repetitive transient stress, with thermal derating defined per Figure 2 and peak power capability validated per IEC 61000-4-5 waveform standards.
Designed for automotive-grade reliability, the 5KASMC22AHM3_A/I operates across -65 °C to +185 °C junction range and meets AEC-Q101 stress testing requirements including HTGB, HTRB, and TCT. Its 20.8 °C/W junction-to-mount thermal resistance supports robust thermal management on PCBs with minimum recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/typ/max) | 24.4 / 25.7 / 26.9 V at 1 mA - precise breakdown threshold enabling accurate overvoltage detection |
| VC @ IPPM | 140.8 V at 35.5 A - clamping voltage limits downstream component stress during ESD or load dump events |
| PPPM (10/1000 μs) | 5000 W - high-energy surge handling capability for automotive 12 V system transients |
| TJ max. | +185 °C - enables use in under-hood environments without thermal derating penalties |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| MSL Level | Level 1 (260 °C peak reflow) - supports standard lead-free SMT assembly without moisture sensitivity concerns |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping |
| Cathode | Protected line connection | Connected to signal/power line being protected; voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR over lifetime and temperature cycling |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Low RSURGE | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive ICs |
| Halogen-free & RoHS | Complies with global environmental regulations and supports lead-free reflow soldering (J-STD-020) |
| MSL Level 1 | Eliminates pre-bake requirement, reducing manufacturing cost and process complexity |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Clamp |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp positive surges above 22 V. Use Value: Limits clamped voltage to 140.8 V at 35.5 A, preserving signal integrity and preventing latch-up in connected microcontrollers. | Use Scenario: Clamping gate-source voltage spikes on N-channel MOSFETs in industrial BLDC motor drives subjected to PWM-induced ringing. IC Role / Device Role / Timing Role: Fast-response TVS connected between gate and source to suppress >100 ns transients. Use Value: 25.7 V nominal breakdown ensures reliable turn-on before MOSFET gate oxide damage threshold (~20 V), while 185 °C rating supports high-ambient motor control enclosures. |
| Telecom Power Input Protection | Consumer Power Adapter Surge Suppression |
Use Scenario: Safeguarding DC input stages of PoE-powered network switches and base station RF modules against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input rail, upstream of DC/DC converters. Use Value: 5000 W peak pulse power handles IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) surges without degradation. | Use Scenario: Secondary-side transient suppression on 5–24 V outputs of wall-mounted AC/DC adapters used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Unidirectional clamp on regulated output to prevent overvoltage damage to USB-C PD controllers or MCU regulators. Use Value: 22 V VWM aligns with common 24 V adapter nominal outputs, while 140.8 V VC prevents downstream regulator overvoltage failure during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Lower PPPM (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA = 140 °C/W) | Suitable for lower-energy consumer electronics; not rated for automotive under-hood temperatures | Select when space-constrained and surge energy ≤600 W; verify thermal margin at 185 °C ambient |
| SMCJ22A | Same SMC package, identical VWM/VBR/VC specs, but rated for 3000 W PPPM (not 5000 W) and non-AEC-Q101 | Acceptable for industrial control where AEC-Q101 is not mandated; lacks automotive qualification documentation | Choose for cost-sensitive industrial designs requiring same footprint but no automotive compliance |
Compared with SMBJ22A and SMCJ22A, the 5KASMC22AHM3_A/I provides 83 % higher peak pulse power and certified AEC-Q101 reliability - critical for automotive sensor nodes and high-reliability industrial gate drivers where sustained surge immunity and long-term parametric stability are mandatory.
Availability
5KASMC22AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive gate clamping, and telecom power input protection requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 5KASMC22AHM3_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, MOSFETs, and TVS devices with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The 5KASMCxxA family was designed specifically for high-energy transient suppression in harsh automotive and industrial environments, targeting applications demanding AEC-Q101 qualification, 185 °C operation, and 5 kW surge capability in compact SMC packaging.
FAQ
What is the clamping voltage of the 5KASMC22AHM3_A/I at its rated peak pulse current?
The 5KASMC22AHM3_A/I has a maximum clamping voltage (VC) of 140.8 V at its peak pulse current (IPPM) of 35.5 A, measured using a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table and defines the upper voltage limit imposed on protected circuitry during a full-rated transient event. The 5KASMC22AHM3_A/I maintains this clamping performance across its operational temperature range and after repeated surge exposures per AEC-Q101 test conditions.
Is the 5KASMC22AHM3_A/I qualified for automotive applications?
Yes, the 5KASMC22AHM3_A/I is AEC-Q101 qualified and explicitly listed as such in the Vishay datasheet (Document Number: 89432). It undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) to validate reliability in automotive under-hood and powertrain environments. Its 185 °C maximum junction temperature rating further supports deployment in demanding automotive subsystems.
What does the "HM3_A/I" suffix indicate in 5KASMC22AHM3_A/I?
The "HM3_A/I" suffix in 5KASMC22AHM3_A/I denotes the packaging and revision: "HM3" indicates halogen-free, RoHS-compliant, AEC-Q101-qualified construction per JESD201 Class 2 whisker test; "A" is the revision code; and "I" specifies 13-inch diameter plastic tape and reel packaging with 3500 units per reel. This differs from "H" packaging (7-inch reel, 850 units), both meeting the same electrical and reliability specifications.
Can the 5KASMC22AHM3_A/I be used in bidirectional configurations?
No, the 5KASMC22AHM3_A/I is unidirectional only, as confirmed in the Features section of the datasheet. It conducts and clamps only positive transients relative to its cathode terminal. For bidirectional protection, two 5KASMC22AHM3_A/I devices must be connected in series opposing configuration, or a dedicated bidirectional TVS (e.g., 5KASMC22CA) should be selected - which is a separate part number with different marking and electrical characteristics.
What is the thermal resistance from junction to ambient for the 5KASMC22AHM3_A/I?
Per the Thermal Characteristics table, the typical junction-to-ambient thermal resistance (RθJA) of the 5KASMC22AHM3_A/I is 100 °C/W when mounted on the minimum recommended pad layout. This value assumes standard FR-4 PCB with specified copper area and is critical for calculating safe power dissipation limits at elevated ambient temperatures. For improved thermal performance, mounting on an infinite heatsink reduces RθJM to 20.8 °C/W.
5KASMC22AHM3_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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 140.8A
- 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)
5KASMC22AHM3_A/I FAQ
1.How can I place an order for 5KASMC22AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC22AHM3_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 5KASMC22AHM3_A/I reliable?
The price and inventory of 5KASMC22AHM3_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 5KASMC22AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 5KASMC22AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC22AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC22AHM3_A/I?
5KASMC22AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC22AHM3_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 5KASMC22AHM3_A/I?
For technical support, including 5KASMC22AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC22AHM3_A/I requirements.
6.How does Aetrix verify that 5KASMC22AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 5KASMC22AHM3_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 5KASMC22AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 5KASMC22AHM3_A/I?
All 5KASMC22AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC22AHM3_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 5KASMC22AHM3_A/I part is unused and in its original packaging.
Return procedure for 5KASMC22AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC22AHM3_A/I Tags
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