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Vishay General Semiconductor - Diodes Division TA6L20AHM3/H
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- Part No.:
- TA6L20AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6L20AHM3/H.pdf
- Description:
- 600W,20V 5%, SLIMSMAW PAR
- Quantity:
- Payment:
- Shipping:
Inventory:6,948
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Product details
Overview
TA6L20AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SlimSMAW (DO-221AD) package, designed for automotive-grade overvoltage protection. It features 20 V breakdown voltage (VBR = 19.0–21.0 V at 1.0 mA), 17.1 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - enabling robust clamping in engine control units and sensor signal lines.
For engineers reviewing the TA6L20AHM3/H datasheet, TA6L20AHM3/H pinout, TA6L20AHM3/H application, or TA6L20AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, SlimSMAW mechanical dimensions, and direct alternatives for automotive ESD/surge protection design-in.
Technical Context
This TVS operates as a single-element, unidirectional clamping device with passivated anisotropic rectifier technology optimized for high-reliability junction stability. Its 185 °C TJ rating and JESD22-B102-compliant matte tin terminals support under-hood automotive environments where thermal cycling and solder-reflow integrity are critical.
The device uses a 10/1000 μs double-exponential surge waveform standard per ANSI/IEEE C62.35, delivering 21.7 A peak pulse current (IPPM) at 27.7 V clamping voltage (VC). Its low 0.082 %/°C VBR temperature coefficient ensures predictable breakdown drift across operating temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V at 1.0 mA - defines precise clamping onset threshold for circuit-level overvoltage detection |
| VWM | 17.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 27.7 V - clamped voltage during 600 W surge, limiting downstream IC stress to safe levels |
| IPPM | 21.7 A - peak surge current capability under standardized 10/1000 μs waveform |
| TJ max | +185 °C - enables operation in high-temperature automotive zones without derating loss |
| Package | SlimSMAW (DO-221AD) - low-profile, MSL Level 1, 260 °C reflow compatible surface-mount outline |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress-test requirements |
Pinout & Package
SlimSMAW (DO-221AD) is a two-terminal, single-diode surface-mount package with cathode indicated by a color band. The device has no internal connections beyond anode and cathode; polarity must be observed during PCB layout to ensure correct transient clamping direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to protected line | Reference node for unidirectional clamping - ties to signal/power rail requiring surge suppression |
| Cathode | Current exit point during forward conduction; marked with color band | Connected to ground or lower-potential reference to enable avalanche breakdown during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature junction capability | TJ = 185 °C enables placement near heat sources (e.g., powertrain ECUs) without thermal shutdown risk |
| AEC-Q101 qualification + JESD201 Class 2 whisker test | Validated reliability for automotive safety-critical modules including ADAS and body control units |
| Low-profile SlimSMAW package | Height ≤ 0.90 mm allows dense routing in space-constrained modules like radar sensors and infotainment head units |
| Optimized junction passivation | Reduces long-term parameter drift and leakage growth under thermal/humidity stress in automotive life cycles |
| 600 W peak pulse power (10/1000 μs) | Handles ISO 7637-2 Pulse 1, 2a, 3a/b transients without failure in 12 V vehicle networks |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 5 V or 12 V supply rails in engine control modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients above VWM to limit voltage seen by MCU, CAN transceivers, and analog front-ends. Use Value: Prevents latch-up or permanent damage to microcontrollers during cranking or alternator regulation faults. | Use Scenario: Shields LIN or analog sensor outputs (e.g., oxygen, pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response clamping element placed directly at connector interface to shunt surge energy before reaching ASIC input pins. Use Value: Maintains signal integrity and prevents false triggering or calibration drift in emission-critical sensor subsystems. |
| Body Control Module (BCM) Switching Node Protection | Infotainment Head Unit USB/Display Interface Protection |
Use Scenario: Guards MOSFET gate drivers and relay coils in BCMs against back-EMF during actuator de-energization. IC Role / Device Role / Timing Role: Positioned across inductive loads to absorb stored magnetic energy and suppress voltage overshoot. Use Value: Extends MOSFET lifetime and eliminates need for snubber RC networks in compact PCB layouts. | Use Scenario: Installed on USB 2.0 data lines and display LVDS pairs in head units exposed to user-accessible ports. IC Role / Device Role / Timing Role: Low-capacitance (< 100 pF typical) unidirectional suppressor preserving signal rise/fall times while meeting IEC 61000-4-2 Level 4. Use Value: Enables compliance with OEM ESD immunity requirements without compromising high-speed interface performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Same VBR range (19.0–21.0 V), but SMB (DO-214AA) package - 1.7 mm taller, higher RθJA (140 °C/W vs. 120 °C/W) | Less suitable for ultra-low-height modules; requires larger pad area and less thermal efficiency in high-power density designs | Select TA6L20AHM3/H when board height < 1.0 mm or junction temperature margin is critical |
| TPSMA6L20A | Identical electrical specs and SlimSMAW package, but TI part lacks AEC-Q101 certification and JESD201 Class 2 whisker test validation | Not approved for automotive safety-related systems; limited to industrial or consumer-grade implementations | Choose TA6L20AHM3/H for production automotive programs requiring full qualification documentation |
Compared with SMBJ20A and TPSMA6L20A, TA6L20AHM3/H delivers superior thermal performance in constrained spaces and full automotive qualification - making it the preferred choice for Tier 1 ECU and sensor module designs where reliability and footprint are co-prioritized.
Availability
TA6L20AHM3/H is available at Aetrix Electronics and suitable for automotive engine control units, sensor interface protection, and body electronics requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for TA6L20AHM3/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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade performance.
The TA6LxxA series belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for automotive-grade surge and ESD protection in harsh-temperature environments up to +185 °C junction temperature.
FAQ
What is the clamping voltage of the TA6L20AHM3/H under a 600 W surge?
The TA6L20AHM3/H clamps to 27.7 V at its rated peak pulse current of 21.7 A, corresponding to the standardized 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the maximum voltage imposed on protected circuitry during transient events. The TA6L20AHM3/H maintains consistent clamping performance across its qualified temperature range due to its low 0.082 %/°C VBR temperature coefficient.
Is the TA6L20AHM3/H qualified for automotive applications?
Yes, the TA6L20AHM3/H carries full AEC-Q101 qualification and meets JESD201 Class 2 whisker test requirements. Its SlimSMAW package, 185 °C maximum junction temperature, and halogen-free, RoHS-compliant construction make it suitable for deployment in engine compartments, transmission control modules, and other automotive systems requiring long-term reliability under thermal and mechanical stress.
What does the "HM3" suffix indicate in TA6L20AHM3/H?
The "HM3" suffix in TA6L20AHM3/H denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified version in SlimSMAW (DO-221AD) packaging. The "/H" indicates tape-and-reel packaging with 3500 units per 7-inch reel. This suffix combination confirms compliance with automotive material standards and ensures compatibility with automated SMT assembly processes.
How does the TA6L20AHM3/H compare to standard SMAJ20A TVS diodes?
The TA6L20AHM3/H offers identical electrical ratings to SMAJ20A but uses the SlimSMAW (DO-221AD) package - 0.4 mm lower profile and improved thermal resistance (RθJA = 120 °C/W vs. ~140 °C/W). Unlike SMAJ20A, TA6L20AHM3/H is AEC-Q101 qualified and optimized for high-temperature stability, making it preferable for next-generation automotive modules where height and thermal margin are constrained.
Can the TA6L20AHM3/H be used in bidirectional configurations?
No, the TA6L20AHM3/H is strictly unidirectional, as confirmed in the Vishay datasheet under "Polarity: Unidirectional only." It must be oriented with cathode toward ground to function correctly. For bidirectional protection, a separate device such as TA6L20CA (center-tapped or complementary pair) would be required - the TA6L20AHM3/H itself does not support symmetrical clamping.
TA6L20AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- Power - Peak Pulse:
- 600W
- 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:
- SlimSMAW (DO-221AD)
TA6L20AHM3/H FAQ
1.How can I place an order for TA6L20AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6L20AHM3/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 TA6L20AHM3/H reliable?
The price and inventory of TA6L20AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6L20AHM3/H is usually 5 days.
3.What payment methods are accepted for TA6L20AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6L20AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6L20AHM3/H?
TA6L20AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6L20AHM3/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 TA6L20AHM3/H?
For technical support, including TA6L20AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6L20AHM3/H requirements.
6.How does Aetrix verify that TA6L20AHM3/H is sourced from the original manufacturer or authorized distributors?
All TA6L20AHM3/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 TA6L20AHM3/H meets industry standards.
7.What is the process for return or replacement of TA6L20AHM3/H?
All TA6L20AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6L20AHM3/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 TA6L20AHM3/H part is unused and in its original packaging.
Return procedure for TA6L20AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6L20AHM3/H Tags
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