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Vishay General Semiconductor - Diodes Division 5KASMC26AHM3_A/I
- Part No.:
- 5KASMC26AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC26AHM3_A/I.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,224
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Product details
Overview
5KASMC26AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 26 V stand-off voltage, 30.4 V nominal breakdown voltage at 1 mA, 5000 W peak pulse power (10/1000 μs), 118.8 V clamping voltage at 42.1 A surge current, and 185 °C maximum junction temperature - deployed for automotive power line and sensor signal line protection.
For engineers reviewing the 5KASMC26AHM3_A/I datasheet, 5KASMC26AHM3_A/I pinout, 5KASMC26AHM3_A/I application, or 5KASMC26AHM3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, TJ = 185 °C capability, and 5000 W surge robustness under standardized 10/1000 μs transients.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range. Its low incremental surge resistance and fast response time enable effective suppression of inductive switching transients and ESD events on sensitive nodes.
The device operates exclusively in unidirectional configuration with cathode band marking, meets JESD201 Class 2 whisker resistance, and is halogen-free, RoHS-compliant, and qualified per AEC-Q101 - confirming suitability for automotive-grade PCB layouts requiring high-reliability transient immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse working voltage before clamping initiates |
| VBR (min/typ/max) | 28.9 / 30.4 / 31.9 V at 1 mA - Ensures reliable turn-on above system operating voltage with margin |
| VC @ IPPM | 118.8 V at 42.1 A - Clamping voltage limits downstream IC stress during 5000 W transient events |
| PPPM | 5000 W (10/1000 μs) - Withstands high-energy surges common in automotive load-dump and inductive kick scenarios |
| TJ max | +185 °C - Enables operation in under-hood environments without derating penalties |
| Package | SMC (DO-214AB) - Standardized surface-mount footprint compatible with automated assembly and thermal pad layout |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMC (DO-214AB), molded case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards; cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; defines conduction direction in unidirectional mode |
| Cathode | High-side transient clamp node | Connected to protected line (e.g., 12 V rail or sensor output); absorbs surge energy into ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable leakage and breakdown characteristics over lifetime and temperature cycling |
| MSL Level 1, LF peak 260 °C | Supports lead-free reflow without popcorn effect or delamination risk |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time) |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates for automotive and industrial end equipment |
| 100 °C/W RθJA (typ.) | Allows thermal estimation on standard PCB land patterns without forced cooling |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against ISO 7637-2 pulse 5a load dump transients up to 60 V/100 ms. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power rail and chassis ground. Use Value: Limits rail voltage to ≤118.8 V during 42.1 A surge, preventing damage to downstream DC-DC controllers and microcontrollers. | Use Scenario: Shielding analog outputs of pressure or temperature sensors in factory automation systems from cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance transient clamp on signal line referenced to local ground. Use Value: Maintains signal integrity with <2.0 μA leakage at 26 V while suppressing >5 kV EFT bursts per IEC 61000-4-4. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side input rectifiers from lightning-induced surges on mains-connected devices. IC Role / Device Role / Timing Role: Secondary-side TVS on DC bus prior to buck converter input. Use Value: Absorbs 5000 W pulses without degradation, enabling compact design versus multi-stage MOV+TVS solutions. | Use Scenario: Protecting PoE-powered network switches from induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Unidirectional clamp on powered pair relative to return path. Use Value: Withstands repeated 10/1000 μs transients up to 42.1 A while maintaining <20 μA leakage at 26 V operating point. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-E3/5A (Vishay) | Same VWM/VBR ratings but lower PPPM (400 W), SMA package (smaller thermal mass) | Limited to low-energy transients; unsuitable for automotive load dump | Select only for space-constrained consumer applications with <500 W surge exposure |
| 1.5KE27A (ON Semiconductor) | Through-hole DO-201 package, 27 V VWM, 5000 W rating, but not AEC-Q101 qualified | Requires manual insertion; lacks automotive reliability validation and MSL Level 1 reflow support | Acceptable for industrial non-automotive use where board-level reliability testing replaces AEC-Q101 |
Compared with SMAJ26A-E3/5A and 1.5KE27A, the 5KASMC26AHM3_A/I delivers automotive-grade reliability in surface-mount format with full AEC-Q101 validation, higher thermal endurance (185 °C), and compatibility with high-volume SMT assembly - making it the preferred choice for mission-critical automotive and industrial designs.
Availability
5KASMC26AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feeders requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for 5KASMC26AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-qualified solutions.
The 5KASMCxxA series is part of Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the maximum clamping voltage of the 5KASMC26AHM3_A/I under a 10/1000 μs surge?
The 5KASMC26AHM3_A/I has a maximum clamping voltage (VC) of 118.8 V when subjected to its peak pulse current (IPPM) of 42.1 A under the standardized 10/1000 μs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number: 89432), ensuring predictable overvoltage limiting for protected circuits. The 5KASMC26AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the 5KASMC26AHM3_A/I qualified for automotive applications?
Yes, the 5KASMC26AHM3_A/I is fully AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). It also meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C. These qualifications confirm the 5KASMC26AHM3_A/I for use in automotive powertrain, body electronics, and ADAS modules.
What does the "HM3_A/I" suffix indicate in 5KASMC26AHM3_A/I?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified SMC package variant; "A" is the revision code; "I" specifies packaging in 13-inch diameter plastic tape and reel with 3500 units per reel. This distinguishes it from the "H" variant (7-inch reel, 850 units). The 5KASMC26AHM3_A/I thus ensures both regulatory compliance and logistics readiness for high-volume SMT production.
Can the 5KASMC26AHM3_A/I be used in bidirectional configurations?
No, the 5KASMC26AHM3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet. It features a single cathode band and is designed to clamp positive transients relative to ground. For bidirectional protection, two 5KASMC26AHM3_A/I devices must be connected in series opposition - but this is not recommended due to mismatched parameters. Use dedicated bidirectional TVS parts like SMBJ26CA instead.
What is the thermal resistance from junction to ambient for the 5KASMC26AHM3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for the 5KASMC26AHM3_A/I is 100 °C/W when mounted on the minimum recommended pad layout, per Vishay's datasheet (Document Number: 89432). This value enables thermal modeling for PCB layout verification. For improved heat dissipation, mounting on an infinite heatsink reduces RθJM to 20.8 °C/W - a critical consideration when designing for sustained surge duty cycles. The 5KASMC26AHM3_A/I leverages this thermal performance to sustain operation up to 185 °C junction temperature.
5KASMC26AHM3_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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 118.8A
- 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)
5KASMC26AHM3_A/I FAQ
1.How can I place an order for 5KASMC26AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC26AHM3_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 5KASMC26AHM3_A/I reliable?
The price and inventory of 5KASMC26AHM3_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 5KASMC26AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 5KASMC26AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC26AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC26AHM3_A/I?
5KASMC26AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC26AHM3_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 5KASMC26AHM3_A/I?
For technical support, including 5KASMC26AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC26AHM3_A/I requirements.
6.How does Aetrix verify that 5KASMC26AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 5KASMC26AHM3_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 5KASMC26AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 5KASMC26AHM3_A/I?
All 5KASMC26AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC26AHM3_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 5KASMC26AHM3_A/I part is unused and in its original packaging.
Return procedure for 5KASMC26AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC26AHM3_A/I Tags
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