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Vishay General Semiconductor - Diodes Division TA6F27AHM3_A/I
- Part No.:
- TA6F27AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F27AHM3_A/I.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,444
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Product details
Overview
TA6F27AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SlimSMA (DO-221AC) package, with 27.0 V nominal breakdown voltage (VBR), 23.1 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the TA6F27AHM3_A/I datasheet, TA6F27AHM3_A/I pinout, TA6F27AHM3_A/I application, or TA6F27AHM3_A/I equivalent, this device is selected for high-temperature ESD and surge protection on signal lines and power rails in automotive sensor units, where TJ = 185 °C operation, 30 kV IEC 61000-4-2 ESD immunity, and low-profile mounting are critical design requirements.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive transients while maintaining low leakage (<1.0 μA at VWM) and tight VBR tolerance (±5% at 1.0 mA test current). Its unidirectional configuration enables asymmetric clamping suitable for DC-biased signal paths.
The SlimSMA package delivers thermal resistance RθJA ≤ 150 °C/W and RθJM ≤ 15 °C/W, supporting 8 W power dissipation at TM = 65 °C and enabling reliable operation in compact automotive ECUs without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V at 1.0 mA - defines precise clamping onset threshold for overvoltage events |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| IPPM (10/1000 μs) | 37.5 A - peak surge current capability determines survivability against ISO 7637-2 Pulse 1/2a/5a |
| VC @ IPPM | 16.0 V - clamped voltage during full-rated surge, limiting stress on downstream ICs |
| TJ max | 185 °C - enables placement near hot components (e.g., power MOSFETs, motor drivers) in engine bay modules |
| ESD Rating | 30 kV contact/air per IEC 61000-4-2 - eliminates need for additional ESD protection on exposed connectors |
| Package | SlimSMA (DO-221AC), 0.95 mm height - fits under 1.0 mm board-to-board connectors and in tight sensor housings |
Pinout & Package
SlimSMA (DO-221AC) surface-mount package with cathode indicated by color band; terminals are matte tin-plated for J-STD-002 solderability and JESD22-B102 whisker resistance (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; establishes unidirectional conduction path from cathode to anode during surge |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., CAN_H, LIN, sensor supply); clamps voltage to ≤16.0 V when VPK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5% over 1000 hrs at 150 °C, critical for long-life automotive modules |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, HTRB, and mechanical shock per AEC standard |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning or dry-pack requirements |
| UL 94 V-0 molding compound | Meets flammability safety requirements for under-hood and cabin electronics enclosures |
| Halogen-free & RoHS-compliant | Complies with EU Directive 2011/65/EU and automotive material declaration standards |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load dump and inductive switching noise. IC Role / Device Role: Unidirectional TVS placed between sensor output and microcontroller ADC input. Use Value: Clamps transients to ≤16.0 V while maintaining <1.0 μA leakage at 23.1 V, preserving signal integrity and measurement accuracy. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in body control modules against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump). IC Role / Device Role: Discrete TVS on each differential line, leveraging 30 kV ESD rating and 600 W surge capacity. Use Value: Limits clamped voltage to 16.0 V at 37.5 A, preventing CAN transceiver latch-up and ensuring bus recovery after surge events. |
| Power Rail Clamping | Infotainment Interface Protection |
|
Use Scenario: Suppressing voltage spikes on 24 V supply rails feeding ADAS camera modules and radar processors. IC Role / Device Role: Primary surge clamp on main power input, upstream of DC-DC converters. Use Value: Withstands 600 W (10/1000 μs) surges and operates up to 185 °C junction temperature, enabling direct placement near power stages. |
Use Scenario: Shielding USB, LVDS, or FPD-Link III interfaces in head units and digital instrument clusters from ESD and cable discharge events. IC Role / Device Role: Low-capacitance TVS on high-speed data lines, exploiting SlimSMA's minimal parasitic footprint. Use Value: 0.95 mm profile avoids interference with fine-pitch connectors; 30 kV IEC 61000-4-2 rating meets OEM ESD test requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/57T | Higher VWM (20.5 V), lower VBR (22.2–24.6 V), same SlimSMA package but only MSL Level 2 (220 °C peak) | Limited to ambient-temperature environments; not AEC-Q101 qualified | Select SMAJ24A-E3/57T only for non-automotive industrial applications requiring lower clamping voltage and no high-temp validation |
| TPSMF24A | Same VWM/VBR range, 600 W rating, but SOD-123FL package (1.3 mm height) and no AEC-Q101 certification | Higher profile limits use in ultra-thin modules; lacks automotive qualification documentation | Choose TPSMF24A only when board space permits taller profile and automotive compliance is not required |
Compared with SMAJ24A-E3/57T and TPSMF24A, the TA6F27AHM3_A/I provides verified AEC-Q101 qualification, 185 °C junction rating, and MSL Level 1 compatibility-making it the sole option among the three for under-hood automotive deployment with zero derating at 125 °C ambient.
Availability
TA6F27AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus transient suppression, and power rail clamping requiring stable component supply across extended temperature ranges and high-reliability production programs.
Supply support for TA6F27AHM3_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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with focus on high-reliability, high-temperature, and automotive-qualified components.
The TA6F27AHM3_A/I belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for robust transient suppression in automotive electronics where AEC-Q101 compliance, 185 °C operation, and low-profile packaging are mandatory.
FAQ
What is the clamping voltage of the TA6F27AHM3_A/I at its rated peak pulse current?
The TA6F27AHM3_A/I exhibits a maximum clamping voltage (VC) of 16.0 V when subjected to its rated peak pulse current (IPPM) of 37.5 A under the standard 10/1000 μs waveform. This value is measured per the conditions specified in the Vishay datasheet Document Number 89939 and ensures downstream ICs remain within safe operating voltage limits during surge events. The TA6F27AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the TA6F27AHM3_A/I qualified for automotive applications?
Yes, the TA6F27AHM3_A/I is AEC-Q101 qualified, having passed all stress tests required for discrete semiconductor components in automotive applications-including high-temperature reverse bias, temperature cycling, and mechanical shock. Its 185 °C maximum junction temperature and MSL Level 1 rating further validate its suitability for under-hood and powertrain systems. The TA6F27AHM3_A/I carries the "HM3_A/I" suffix denoting halogen-free, RoHS-compliant, and AEC-Q101-qualified construction.
What does the "HM3_A/I" suffix indicate in TA6F27AHM3_A/I?
The "HM3_A/I" suffix in TA6F27AHM3_A/I identifies the packaging and compliance configuration: "HM3" denotes the SlimSMA (DO-221AC) package with halogen-free molding compound; "A" is the revision code; and "I" specifies the 13-inch tape-and-reel delivery format with 14,000 units per reel. This suffix confirms RoHS compliance, AEC-Q101 qualification, and JESD201 Class 2 whisker resistance-all documented in Vishay's datasheet 89939 for the TA6F27AHM3_A/I.
Can the TA6F27AHM3_A/I be used in bidirectional configurations?
No, the TA6F27AHM3_A/I is a unidirectional TVS diode, designed for DC-biased circuits where transient energy flows in one direction-such as positive-rail protection or signal-line clamping referenced to ground. It does not provide symmetrical clamping like a bidirectional device. For AC or floating-line applications requiring dual-polarity suppression, a separate bidirectional TVS (e.g., TA6F27CA variant) must be selected. The TA6F27AHM3_A/I polarity is marked by a cathode band on the SlimSMA package body.
What is the thermal resistance of the TA6F27AHM3_A/I when mounted on a standard FR-4 PCB?
When mounted on a standard FR-4 PCB with the minimum recommended pad layout per JEDEC 51-2A, the TA6F27AHM3_A/I has a maximum junction-to-ambient thermal resistance (RθJA) of 150 °C/W. Its junction-to-mount thermal resistance (RθJM) is ≤15 °C/W per JEDEC 51-14, enabling effective heat transfer to the PCB copper. These values support 8 W power dissipation at TM = 65 °C and ensure stable operation without external heatsinking in typical automotive PCB layouts. The TA6F27AHM3_A/I leverages these thermal characteristics for sustained reliability in high-temperature environments.
TA6F27AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- PAR®
- 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:
- DO-221AC (SlimSMA)
TA6F27AHM3_A/I FAQ
1.How can I place an order for TA6F27AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F27AHM3_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 TA6F27AHM3_A/I reliable?
The price and inventory of TA6F27AHM3_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 TA6F27AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TA6F27AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F27AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F27AHM3_A/I?
TA6F27AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F27AHM3_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 TA6F27AHM3_A/I?
For technical support, including TA6F27AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F27AHM3_A/I requirements.
6.How does Aetrix verify that TA6F27AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TA6F27AHM3_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 TA6F27AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TA6F27AHM3_A/I?
All TA6F27AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TA6F27AHM3_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 TA6F27AHM3_A/I part is unused and in its original packaging.
Return procedure for TA6F27AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F27AHM3_A/I Tags
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