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Vishay General Semiconductor - Diodes Division TA6L27AHM3/H
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- Part No.:
- TA6L27AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6L27AHM3/H.pdf
- Description:
- 600W,27V 5%, SLIMSMAW PAR
- Quantity:
- Payment:
- Shipping:
Inventory:6,875
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Product details
Overview
TA6L27AHM3/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 a 27.0 V nominal breakdown voltage (VBR), 23.1 V stand-off voltage (VWM), 37.5 V maximum clamping voltage at 16.0 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature.
For engineers reviewing the TA6L27AHM3/H datasheet, TA6L27AHM3/H pinout, TA6L27AHM3/H application, or TA6L27AHM3/H equivalent, this device is selected for high-reliability automotive sensor line protection, MOSFET gate protection in engine control units, and ESD/surge suppression in ADAS camera modules where AEC-Q101 qualification and MSL Level 1 solderability are mandatory.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable performance under high-temperature stress. Its unidirectional configuration provides low-leakage reverse blocking (1.0 µA at VWM) and precise clamping response during fast transients induced by inductive load switching.
The SlimSMAW (DO-221AD) package delivers low thermal resistance (RθJM = 12–15 °C/W) and supports high-power dissipation without derating below 125 °C ambient. The HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD 201 Class 2 whisker test compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 27.0 V - Ensures reliable triggering above system operating voltage while avoiding false clamping during normal operation. |
| VWM | 23.1 V - Maximum continuous reverse working voltage compatible with 24 V automotive supply rails. |
| VC @ IPPM | 37.5 V - Clamps surge events to safe levels for downstream 3.3 V/5 V logic and analog ICs. |
| IPPM | 16.0 A - Sustains 10/1000 µs surge pulses common in ISO 7637-2 Pulse 1/2a/5a automotive tests. |
| PPPM | 600 W - Delivers robust energy absorption without thermal runaway in compact PCB layouts. |
| TJ max | +185 °C - Enables placement near heat sources (e.g., power converters) in engine bay applications. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components per JESD22-A108. |
Pinout & Package
Package: SlimSMAW (DO-221AD), low-profile surface-mount case with cathode band marking on top surface. Matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to protected signal line or power rail; forms forward path during transient conduction. |
| Cathode | Current exit terminal during clamping | Connected to ground or low-impedance return path; polarity marked by color band per DO-221AD standard. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping | Enables precise overvoltage protection on DC-biased lines without affecting normal forward bias operation. |
| Junction passivation design | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without preconditioning-critical for high-volume automotive assembly. |
| 185 °C junction capability | Supports placement in under-hood ECUs without thermal derating penalties or external heatsinking. |
| AEC-Q101 + JESD 201 Class 2 | Validates reliability for automotive safety-critical subsystems including braking, steering, and ADAS sensors. |
Applications
| Automotive Engine Control Unit (ECU) | ADAS Camera Power Line Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver pins from load dump and inductive kickback in 12 V/24 V power domains. IC Role / Device Role: Unidirectional TVS placed between protected signal line and chassis ground to clamp transients before reaching sensitive inputs. Use Value: Maintains system uptime during ISO 7637-2 Pulse 5a (load dump) events up to 60 V, with <1.0 µA leakage preserving battery drain budgets. | Use Scenario: Shields 12 V camera module power input against surges from nearby motor actuation and ESD events during vehicle assembly. IC Role / Device Role: Primary front-end surge suppressor mounted directly at connector entry point before DC-DC converter input. Use Value: Limits clamped voltage to 37.5 V, ensuring downstream buck regulator remains within absolute maximum ratings during 10/1000 µs transients. |
| Electric Power Steering (EPS) Sensor Interface | Body Control Module (BCM) LIN Bus Protection |
Use Scenario: Guards Hall-effect position sensor outputs against ESD and switching noise from adjacent motor drivers in EPS assemblies. IC Role / Device Role: Signal-line TVS on differential analog outputs, referenced to local sensor ground. Use Value: Provides 37.5 V clamping with 16.0 A peak current capacity, preventing latch-up or parametric shift in precision analog circuits. | Use Scenario: Protects LIN transceiver PHY layer from cable discharge events and bus contention spikes in multi-node body networks. IC Role / Device Role: Unidirectional TVS connected between LIN bus line and ground, leveraging low VWM (23.1 V) to avoid interfering with 12 V bus signaling. Use Value: Achieves <1.0 µA reverse leakage at 12 V, eliminating signal distortion while maintaining fast transient response (<1 ns). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-H | Higher VWM (24.0 V), lower VC (38.9 V), same PPPM (600 W), SMB package (DO-214AA) | Larger footprint (4.58 × 3.94 mm vs. SlimSMAW's 4.0 × 2.7 mm); less suitable for ultra-dense ADAS modules | Select when board space allows larger package and tighter clamping voltage tolerance is prioritized over thermal resistance. |
| TPSMF24A | Same VWM/VC specs, but rated for 1500 W PPPM, SOD-123FL package, no AEC-Q101 qualification | Not qualified for automotive use; intended for industrial/commercial systems with lower reliability requirements | Choose only for non-automotive applications requiring higher surge margin and cost-sensitive designs without qualification mandates. |
Compared with SMBJ24A-H and TPSMF24A, TA6L27AHM3/H uniquely combines AEC-Q101 qualification, SlimSMAW's superior thermal resistance (RθJM ≤ 15 °C/W), and precise 23.1 V VWM alignment with 24 V automotive systems-making it optimal for space-constrained, thermally demanding automotive electronics.
Availability
TA6L27AHM3/H is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and electric power steering systems requiring stable component supply across extended production lifecycles.
Supply support for TA6L27AHM3/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 optoelectronics for automotive, industrial, and computing markets.
The TA6L series belongs to Vishay's PAR® family of high-temperature TVS diodes, engineered specifically for AEC-Q101-compliant automotive electronics where sustained operation at +185 °C and immunity to harsh environmental stress are mandatory.
FAQ
What is the breakdown voltage tolerance for TA6L27AHM3/H?
The TA6L27AHM3/H has a breakdown voltage (VBR) range of 25.7 V (min) to 28.4 V (max) at 1.0 mA test current, with 27.0 V nominal. This ±5% tolerance ensures consistent clamping behavior across production lots while accommodating thermal drift via its 0.087 %/°C temperature coefficient-critical for stable protection in under-hood environments where ambient temperatures exceed 105 °C.
Is TA6L27AHM3/H suitable for bidirectional transient suppression?
No, TA6L27AHM3/H is strictly unidirectional and must be used with correct polarity-cathode connected to ground or low-impedance return path. It does not provide symmetrical clamping for AC signals or bipolar transients. For bidirectional protection, Vishay offers complementary devices such as the TA6L27CA series; using TA6L27AHM3/H in reverse-biased configurations risks permanent damage due to lack of reverse breakdown specification.
Does TA6L27AHM3/H require derating at elevated ambient temperatures?
Yes, TA6L27AHM3/H must be derated per Figure 2 in the datasheet: peak pulse power decreases linearly above 25 °C ambient, reaching ~50% of 600 W at 125 °C. However, its 185 °C maximum junction temperature and low RθJM (12–15 °C/W) allow full-rated surge handling in most automotive placements when PCB copper area and thermal vias are properly implemented per JEDEC 51-14 guidelines.
What does the "HM3" suffix indicate in TA6L27AHM3/H?
The "HM3" suffix in TA6L27AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. The "/H" indicates packaging in 7-inch plastic tape and reel (3500 units per reel). This suffix combination certifies the device for automotive production use where material compliance, long-term reliability, and assembly process compatibility are enforced.
How does TA6L27AHM3/H compare to standard SMA-package TVS diodes in thermal performance?
TA6L27AHM3/H in SlimSMAW (DO-221AD) achieves RθJM of 12–15 °C/W-up to 40% lower than typical SMA (DO-214AC) packages (~25 °C/W). This enables faster heat transfer to the PCB mount pad, allowing higher surge repetition rates and longer duty cycles in thermally constrained layouts like ADAS camera modules, where standard SMA devices would exceed junction limits under repeated ISO 7637-2 testing.
TA6L27AHM3/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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
TA6L27AHM3/H FAQ
1.How can I place an order for TA6L27AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6L27AHM3/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 TA6L27AHM3/H reliable?
The price and inventory of TA6L27AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6L27AHM3/H is usually 5 days.
3.What payment methods are accepted for TA6L27AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6L27AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6L27AHM3/H?
TA6L27AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6L27AHM3/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 TA6L27AHM3/H?
For technical support, including TA6L27AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6L27AHM3/H requirements.
6.How does Aetrix verify that TA6L27AHM3/H is sourced from the original manufacturer or authorized distributors?
All TA6L27AHM3/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 TA6L27AHM3/H meets industry standards.
7.What is the process for return or replacement of TA6L27AHM3/H?
All TA6L27AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TA6L27AHM3/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 TA6L27AHM3/H part is unused and in its original packaging.
Return procedure for TA6L27AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6L27AHM3/H Tags
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