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Vishay General Semiconductor - Diodes Division 3KASMC13AHM3_A/H
- Part No.:
- 3KASMC13AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC13AHM3_A/H.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,196
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Product details
Overview
3KASMC13AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 13 V stand-off voltage (VWM), 14.4–15.9 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 21.5 V clamping voltage at 140 A IPPM, and qualified to AEC-Q101 for automotive electronics protection.
For engineers reviewing the 3KASMC13AHM3_A/H datasheet, 3KASMC13AHM3_A/H pinout, 3KASMC13AHM3_A/H application, or 3KASMC13AHM3_A/H equivalent, this page delivers verified electrical specs, thermal resistance (RθJA = 77.5 °C/W), junction temperature capability up to +185 °C, RoHS-compliant matte tin terminals, and MSL Level 1 reflow compatibility - all critical for high-reliability transient suppression design.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to voltage transients. Its unidirectional polarity and low incremental surge resistance enable precise clamping during inductive load switching events without forward conduction interference.
Designed for automotive-grade reliability, it operates across -65 °C to +185 °C junction temperature range and meets JESD201 Class 2 whisker resistance. The device is characterized with 1.0 mA test current for VBR and exhibits 2.0 μA max reverse leakage at VWM (TA = 25 °C) and 20 μA at TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 14.4 V / 15.9 V at 1.0 mA - ensures reliable breakdown onset within tight tolerance band |
| VC @ IPPM | 21.5 V at 140 A - clamping voltage under 10/1000 μs surge defines protected circuit's peak stress level |
| PPPM | 3000 W - peak pulse power handling capacity determines survivability against lightning or ESD-like transients |
| TJ max. | +185 °C - enables operation in under-hood automotive environments without derating penalties |
| RθJA | 77.5 °C/W - thermal resistance from junction to ambient informs heatsinking requirements on standard PCB pads |
| AEC-Q101 | Qualified - confirms robustness for automotive electronic control units per stress-test standard |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by color band; RoHS-compliant matte tin plated leads; MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; must be routed with low-inductance path to ground reference |
| Cathode | Current exit terminal during forward conduction; clamping node during reverse transient | Connected to protected signal/power line; absorbs surge energy into ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure improves long-term reliability under thermal cycling and humidity |
| High-temperature operation | TJ max. = +185 °C supports placement near power MOSFETs or in engine-control modules without thermal derating |
| Clamping performance | Low VC/VBR ratio (≈1.5) ensures minimal overvoltage exposure to downstream ICs during surge events |
| Surge current handling | IPPM = 140 A (10/1000 μs) provides margin against ISO 7637-2 Pulse 1/2a/5a transients in 12 V systems |
| Manufacturing compliance | Meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability for safety-critical assemblies |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails in body control modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse transients above VWM while blocking normal DC operation. Use Value: Withstands 3000 W surges and operates up to +185 °C, enabling direct placement on battery-fed PCB traces without external heatsinking. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O cards. IC Role / Device Role / Timing Role: Fast-response transient suppressor shunts ESD and cable discharge events before reaching precision ADC inputs. Use Value: 21.5 V clamping voltage limits sensor output excursion, preserving signal integrity and preventing latch-up in downstream op-amps. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Guarding PoE-powered Ethernet switch ports against induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs common-mode transients on 48 V DC input lines without leakage-induced bias shift. Use Value: 2.0 μA max IR at VWM prevents standby current drift in always-on network interfaces. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Unidirectional clamp diverts inductive kickback energy away from H-bridge MOSFETs during PWM commutation. Use Value: 200 A IFSM rating accommodates repeated motor startup surges without degradation over 10+ year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A | Same DO-214AC (SMA) package; lower PPPM (400 W); VBR = 14.4–16.0 V; RθJA ≈ 110 °C/W | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 | Select only for cost-sensitive consumer applications with <500 W surge requirement and no AEC-Q101 mandate |
| SMCJ13A | Same DO-214AB (SMC) package; identical PPPM (3000 W); VBR = 14.4–16.0 V; AEC-Q101 qualified; RθJA = 77.5 °C/W | Functionally equivalent but uses legacy base P/N suffix (no "_A/H" tape/reel coding) | Valid alternative if reel packaging format (7" tape, 850 pcs) is not required; verify reel code compatibility with SMT line feeders |
Compared with SMAJ13A and SMCJ13A, the 3KASMC13AHM3_A/H offers identical surge robustness and thermal performance but adds traceable RoHS-compliant manufacturing with HM3 suffix and JESD201 Class 2 whisker resistance - critical for Tier-1 automotive BOMs requiring full material compliance documentation.
Availability
3KASMC13AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and appliance motor controllers requiring stable component supply with full AEC-Q101 qualification and RoHS compliance.
Supply support for 3KASMC13AHM3_A/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, emphasizing high-reliability performance and automotive qualification.
The 3KASMC series was developed specifically for high-temperature, high-surge automotive and industrial power-line protection, leveraging passivated anisotropic rectifier technology to meet AEC-Q101 and extended junction temperature demands.
FAQ
What is the clamping voltage of the 3KASMC13AHM3_A/H under a 10/1000 μs surge?
The 3KASMC13AHM3_A/H has a maximum clamping voltage (VC) of 21.5 V at 140 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during transient events. It directly impacts system-level immunity margins and must be validated against the absolute maximum ratings of downstream components.
Is the 3KASMC13AHM3_A/H suitable for automotive applications?
Yes, the 3KASMC13AHM3_A/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. Its 3000 W peak pulse power rating and low clamping voltage support compliance with ISO 7637-2 Pulse 1, 2a, and 5a test profiles. The HM3 suffix also confirms JESD201 Class 2 whisker resistance and RoHS compliance required by major automotive OEMs.
What does the "_A/H" suffix mean in 3KASMC13AHM3_A/H?
The "_A/H" suffix in 3KASMC13AHM3_A/H indicates a specific tape-and-reel packaging configuration: "H" denotes 7-inch diameter plastic tape with 850 units per reel. The "A" denotes revision level A of the HM3 base part. This ordering code ensures compatibility with automated SMT placement equipment calibrated for standard 7" reels and guarantees traceable manufacturing lot data per Vishay's quality documentation standards.
How does the thermal resistance of the 3KASMC13AHM3_A/H affect PCB layout?
The 3KASMC13AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 77.5 °C/W when mounted on the minimum recommended pad layout per Vishay's DO-214AB footprint. To maintain safe junction temperatures under sustained 6.0 W power dissipation, designers must use adequate copper area (≥ 100 mm² per pad) and avoid thermal isolation. Thermal vias to inner ground planes further reduce effective RθJA in high-power transient scenarios.
Does the 3KASMC13AHM3_A/H have bidirectional capability?
No, the 3KASMC13AHM3_A/H is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in forward bias like a standard diode and clamps reverse transients above its breakdown voltage. For bidirectional protection (e.g., AC lines or differential signals), two unidirectional devices in series-opposed configuration or a dedicated bidirectional TVS such as 3KASMC13CA would be required - the latter is not interchangeable with 3KASMC13AHM3_A/H due to different polarity and marking.
3KASMC13AHM3_A/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:
- Obsolete
- 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 (SMCJ)
3KASMC13AHM3_A/H FAQ
1.How can I place an order for 3KASMC13AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC13AHM3_A/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_A/H reliable?
The price and inventory of 3KASMC13AHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC13AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC13AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC13AHM3_A/H?
3KASMC13AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC13AHM3_A/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_A/H?
For technical support, including 3KASMC13AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC13AHM3_A/H requirements.
6.How does Aetrix verify that 3KASMC13AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC13AHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC13AHM3_A/H?
All 3KASMC13AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC13AHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for 3KASMC13AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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