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Vishay General Semiconductor - Diodes Division TA6L6.8AHM3/H
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- Part No.:
- TA6L6.8AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6L6.8AHM3/H.pdf
- Description:
- 600W,6.8V 5%, SLIMSMAW PAR
- Quantity:
- Payment:
- Shipping:
Inventory:6,982
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Product details
Overview
TA6L6.8AHM3/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 6.8 V breakdown voltage (VBR), 5.8 V working peak reverse voltage (VWM), 600 W peak pulse power (10/1000 µs), 185 °C maximum junction temperature, and AEC-Q101 qualification - used to protect MOSFETs, sensor signal lines, and ICs against inductive switching transients.
For engineers reviewing the TA6L6.8AHM3/H datasheet, TA6L6.8AHM3/H pinout, TA6L6.8AHM3/H application, or TA6L6.8AHM3/H equivalent, key selection criteria include clamping voltage (10.5 V at 57.1 A), low leakage (<500 µA at VWM), MSL Level 1 moisture sensitivity, and halogen-free, RoHS-compliant construction with matte tin-plated leads.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and reliability under automotive thermal stress. Its unidirectional configuration provides precise reverse-biased clamping with tight VBR tolerance (±5% typical) and low dynamic impedance, enabling fast response to ESD and surge events.
The device operates across -65 °C to +185 °C junction temperature range and delivers consistent clamping performance up to 150 °C ambient, supported by a temperature coefficient of VBR of 0.047 %/°C - critical for engine bay and ADAS sensor interface protection where thermal derating must be accurately modeled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V at 10 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| VWM | 5.80 V - maximum continuous reverse voltage before leakage exceeds 500 µA, ensuring stable standby operation |
| IPPM | 57.1 A (10/1000 µs) - peak surge current handling capacity directly determines robustness against ISO 7637-2 Pulse 1/2a/5a transients |
| VC at IPPM | 10.5 V - clamping voltage during full-rated surge, limiting protected circuit voltage stress to safe levels |
| TJ max | +185 °C - enables use in high-temperature automotive environments without derating penalties beyond 150 °C ambient |
| Package | SlimSMAW (DO-221AD) - low-profile, MSL Level 1 compatible surface-mount outline with 2.70 mm width and 5.00 mm length |
| AEC-Q101 | Qualified - validated for automotive electronics per JESD22-A108 and JESD22-A114, including whisker testing (JESD201 Class 2) |
Pinout & Package
SlimSMAW (DO-221AD) is a two-terminal surface-mount package with cathode indicated by a color band. The device has no internal connections beyond anode and cathode; polarity is critical for unidirectional clamping function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side reference | Provides return path for surge current during clamping; must be routed with low-inductance connection to minimize VL overshoot |
| Cathode | Current exit terminal in forward bias; marked by color band, connected to line being protected | Defines clamping node - voltage at this terminal is limited to ≤10.5 V during 57.1 A surge, protecting downstream components |
Key Features
| Feature | Design Value |
|---|---|
| 185 °C junction rating | Enables direct placement near high-heat sources (e.g., powertrain ECUs) without thermal derating below 150 °C ambient |
| 600 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a (load dump) energy requirements for 12 V automotive systems with margin |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Halogen-free, RoHS-compliant, AEC-Q101 qualified | Fulfills automotive OEM material compliance mandates and long-term reliability validation for safety-critical modules |
| Low leakage: ≤500 µA at VWM | Minimizes standby power loss in always-on sensor interfaces and battery-backed circuits |
Applications
| Automotive Engine Control Unit (ECU) Protection | ADAS Camera Signal Line Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver pins from load dump and inductive kickback in 12 V powertrain systems. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and ground, clamping transients within 1 ns response time. Use Value: Limits voltage excursion to ≤10.5 V during 57.1 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Shields high-speed LVDS or MIPI CSI-2 data lines in front-facing cameras from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (typ. 200 pF at 0 V) clamping device mounted adjacent to connector, referenced to local ground plane. Use Value: Maintains signal integrity with <11 V clamping at 10 A, avoiding distortion or bit errors in 1–2 Gbps video streams. |
| Electric Power Steering (EPS) Motor Driver Protection | Body Control Module (BCM) Sensor Interface Protection |
Use Scenario: Guards half-bridge gate drivers and current sense amplifiers against back-EMF spikes during motor commutation. IC Role / Device Role / Timing Role: Placed across motor phase outputs and ground, absorbing repetitive 600 W pulses without degradation. Use Value: Sustains 185 °C junction temperature capability under continuous PWM switching, eliminating thermal runaway risk. |
Use Scenario: Protects analog inputs (e.g., temperature, humidity, door switch) from battery disconnect transients and jump-start surges. IC Role / Device Role / Timing Role: Single-element unidirectional suppressor on each sensor line, sized for 5.8 V nominal system voltage. Use Value: Delivers <500 µA leakage at 5.8 V, preserving accuracy of µA-level sensor bias currents and ADC reference stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-E3/5AT | Same VBR (6.45–7.14 V), but lower PPPM (400 W), higher VC (11.5 V), and only rated to 150 °C TJ | Not AEC-Q101 qualified; lacks JESD201 Class 2 whisker test; unsuitable for under-hood automotive deployment | Select when cost sensitivity outweighs automotive qualification and thermal margin requirements |
| 1.5SMC6.8A | Higher VC (11.2 V), larger SMC (DO-214AB) package, 150 °C TJ max, no AEC-Q101 or MSL Level 1 rating | Requires PCB area increase (~50% larger footprint); incompatible with automated high-volume SMT lines requiring MSL-1 compliance | Choose only for legacy industrial designs where board space and reflow profile flexibility permit larger package |
Compared with SMAJ6.8A-E3/5AT and 1.5SMC6.8A, TA6L6.8AHM3/H offers superior thermal endurance (+185 °C vs. +150 °C), tighter clamping (10.5 V vs. ≥11.2 V), and full automotive qualification - making it the sole option for new AEC-Q101–compliant designs requiring high-reliability surge immunity in compact layouts.
Availability
TA6L6.8AHM3/H is available at Aetrix Electronics and suitable for automotive ECU protection, ADAS camera interfaces, and electric power steering systems requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for TA6L6.8AHM3/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
TA6L6.8AHM3/H belongs to Vishay's PAR® series of transient voltage suppressors, engineered specifically for automotive-grade surge immunity with enhanced thermal stability and AEC-Q101 validation.
FAQ
What is the clamping voltage of TA6L6.8AHM3/H at its rated peak pulse current?
The TA6L6.8AHM3/H exhibits a maximum clamping voltage (VC) of 10.5 V when subjected to its rated peak pulse current (IPPM) of 57.1 A under the standardized 10/1000 µs waveform. This value is measured per Figure 5 in the official Vishay datasheet (Document Number: 87415) and ensures protected circuit nodes remain below critical voltage thresholds during surge events. The TA6L6.8AHM3/H maintains this clamping performance across its full operating temperature range.
Is TA6L6.8AHM3/H suitable for 24 V automotive systems?
No - TA6L6.8AHM3/H is specified for 12 V nominal systems, with a 5.8 V working peak reverse voltage (VWM) and 6.8 V breakdown voltage. For 24 V applications, Vishay recommends higher-voltage variants such as TA6L24AHM3/H (VWM = 20.5 V, VBR = 22.8–25.2 V). Using TA6L6.8AHM3/H in a 24 V system would cause continuous reverse conduction and catastrophic failure. Always match VWM to the system's maximum steady-state voltage.
Does TA6L6.8AHM3/H have a bidirectional configuration option?
No - TA6L6.8AHM3/H is unidirectional only, as explicitly stated in the Vishay datasheet under FEATURES and PRIMARY CHARACTERISTICS. Bidirectional variants (e.g., TA6L6.8CA) exist in the same family but carry different part number suffixes and are not interchangeable. Substituting a unidirectional device like TA6L6.8AHM3/H for bidirectional protection will leave positive-going transients unclamped and may damage downstream circuitry.
What is the moisture sensitivity level (MSL) rating for TA6L6.8AHM3/H?
TA6L6.8AHM3/H meets MSL Level 1 per J-STD-020, with a maximum lead-free reflow peak temperature of 260 °C. This allows indefinite floor life at ≤30 °C/60% RH without dry-packaging or baking prior to assembly. The MSL Level 1 rating is confirmed in the "FEATURES" section of the Vishay datasheet (Revision: 17-Sep-2021) and applies specifically to the HM3 suffix variant, which includes the /H tape-and-reel packaging.
How does the temperature coefficient of VBR affect TA6L6.8AHM3/H performance in engine bay applications?
The TA6L6.8AHM3/H has a VBR temperature coefficient (αT) of +0.047 %/°C, meaning its breakdown voltage increases linearly with junction temperature. At 150 °C junction temperature, VBR rises by ~5.9%, shifting from 6.80 V to ~7.2 V. This predictable drift enables accurate clamping window design in high-temperature environments - critical for engine control units where thermal derating must preserve margin between VWM and actual VBR.
TA6L6.8AHM3/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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- 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)
TA6L6.8AHM3/H FAQ
1.How can I place an order for TA6L6.8AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6L6.8AHM3/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 TA6L6.8AHM3/H reliable?
The price and inventory of TA6L6.8AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6L6.8AHM3/H is usually 5 days.
3.What payment methods are accepted for TA6L6.8AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6L6.8AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6L6.8AHM3/H?
TA6L6.8AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6L6.8AHM3/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 TA6L6.8AHM3/H?
For technical support, including TA6L6.8AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6L6.8AHM3/H requirements.
6.How does Aetrix verify that TA6L6.8AHM3/H is sourced from the original manufacturer or authorized distributors?
All TA6L6.8AHM3/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 TA6L6.8AHM3/H meets industry standards.
7.What is the process for return or replacement of TA6L6.8AHM3/H?
All TA6L6.8AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6L6.8AHM3/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 TA6L6.8AHM3/H part is unused and in its original packaging.
Return procedure for TA6L6.8AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6L6.8AHM3/H Tags
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