My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TA6F51AHM3/6B
- Part No.:
- TA6F51AHM3/6B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TA6F51AHM3/6B.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO221AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,890
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TA6F51AHM3/6B from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge clamping in automotive and industrial power rails. It features a 48.5 V to 53.6 V breakdown voltage (VBR), 43.6 V maximum working voltage (VWM), 70.1 V clamping voltage at 8.6 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification - deployed to protect MOSFETs and ICs against inductive switching transients in engine control units.
For engineers reviewing the TA6F51AHM3/6B datasheet, TA6F51AHM3/6B pinout, TA6F51AHM3/6B application, or TA6F51AHM3/6B equivalent, key selection criteria include its DO-221AC (SlimSMA) package, 185 °C junction temperature rating, uni-directional polarity, IEC 61000-4-2 Level 4 ESD immunity (15 kV air / 8 kV contact), and MSL Level 1 moisture sensitivity.
Technical Context
This TVS diode operates as a clamping device in series with power or signal lines, conducting only when reverse voltage exceeds VBR to divert surge energy away from downstream components. Its passivated anisotropic rectifier structure enables stable clamping performance across -65 °C to +185 °C ambient range and supports automated SMT placement on FR-4 PCBs with minimum recommended pad layout.
The device delivers 600 W peak pulse power under 10/1000 μs waveform while maintaining low thermal resistance (RθJA = 145 °C/W, RθJM = 20 °C/W), enabling reliable operation in thermally constrained automotive modules where sustained power dissipation must remain below 6 W at TM = 65 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V - defines precise clamping onset threshold for overvoltage events |
| VWM | 43.6 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 70.1 V at 8.6 A - clamped voltage during 600 W surge, limiting stress on protected ICs |
| Peak Pulse Power | 600 W (10/1000 μs) - energy-handling capacity for automotive load-dump and ISO 7637-2 pulses |
| Junction Temp (TJ) | –65 °C to +185 °C - enables deployment in under-hood ECUs without derating |
| ESD Rating | IEC 61000-4-2 Level 4: 15 kV air / 8 kV contact - protects sensor interfaces from human-body discharge |
| Moisture Sensitivity | MSL Level 1 (J-STD-020) - allows unlimited floor life and reflow up to 260 °C peak |
Pinout & Package
DO-221AC (SlimSMA) package: ultra-low-profile surface-mount case with 0.95 mm typical height, matte tin-plated terminals, cathode indicated by color band, and UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential rail in uni-directional clamp configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 12 V supply); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Uni-directional clamping architecture | Enables integration into DC power rails without blocking normal forward bias operation |
| AEC-Q101 qualification | Validates reliability for automotive under-hood applications including engine control and body electronics |
| 185 °C junction capability | Supports operation in high-temperature environments without thermal shutdown or parameter drift |
| Low-profile SlimSMA package | Reduces board space and improves thermal coupling to copper pads for enhanced surge dissipation |
| Passivated anisotropic rectifier design | Ensures stable VBR and low leakage (<1 μA at VWM) across full temperature range |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller I/O and power supply inputs from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Uni-directional TVS placed between 12 V rail and ground to clamp surges above 43.6 V. Use Value: Limits clamped voltage to 70.1 V during 600 W pulses, preventing latch-up or gate oxide damage in protected MCU and driver ICs. |
Use Scenario: Shields 24 V digital input circuitry from inductive kickback when solenoids or relays de-energize. IC Role / Device Role / Timing Role: Clamping device on field-side input line, referenced to system ground. Use Value: Withstands repetitive 10/1000 μs surges up to 8.6 A while maintaining <1 μA leakage at 24 V nominal operation. |
| Telecom Base Station Power Supply | Consumer Appliance Motor Drive Board |
Use Scenario: Guards DC-DC converter inputs against lightning-induced surges on outdoor power feeds. IC Role / Device Role / Timing Role: Primary surge suppression stage ahead of upstream buck controller and gate drivers. Use Value: 600 W peak power rating and 145 °C/W thermal resistance enable robust protection without heatsink in compact enclosures. |
Use Scenario: Safeguards H-bridge gate drivers from back-EMF spikes generated by brushed DC motors. IC Role / Device Role / Timing Role: Localized clamping on half-bridge high-side and low-side supply rails. Use Value: SlimSMA footprint allows placement adjacent to motor driver ICs, minimizing parasitic inductance in the clamping path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ51A-E3/5AT | Same DO-214AC package, but lower 51 V VBR (48.5–53.6 V vs. 48.5–53.6 V), identical 600 W rating, no AEC-Q101 qualification | Lacks automotive qualification; suitable for industrial/commercial use only | Select SMAJ51A-E3/5AT if AEC-Q101 is not required and cost optimization is prioritized |
| 1.5SMC51A | DO-214AB package (larger), same VBR range, 600 W rating, AEC-Q101 qualified, but 1.5 mm height vs. 0.95 mm | Higher profile limits use in ultra-thin modules; higher RθJA (160 °C/W) reduces thermal margin | Choose 1.5SMC51A only when SlimSMA footprint is incompatible with existing assembly process |
Compared with SMAJ51A-E3/5AT and 1.5SMC51A, TA6F51AHM3/6B uniquely combines AEC-Q101 qualification, DO-221AC ultra-low profile, and 185 °C junction rating - making it the only option qualified for space-constrained, high-temperature automotive power rail protection.
Availability
TA6F51AHM3/6B is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and telecom base station power supplies requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TA6F51AHM3/6B 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 TA6F series belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for high-temperature, high-surge automotive and industrial applications where AEC-Q101 compliance and thermal stability are mandatory.
FAQ
What is the clamping voltage of the TA6F51AHM3/6B at its rated peak pulse current?
The TA6F51AHM3/6B has a maximum clamping voltage (VC) of 70.1 V when subjected to its rated peak pulse current of 8.6 A under a 10/1000 μs waveform. This value is measured per the standard test condition defined in the Vishay datasheet Document Number 89939 and ensures predictable overvoltage limiting for downstream ICs. The TA6F51AHM3/6B maintains this clamping performance across its full operating temperature range.
Is the TA6F51AHM3/6B suitable for automotive under-hood applications?
Yes, the TA6F51AHM3/6B is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control units and transmission control modules. Its DO-221AC package supports automated placement and withstands reflow profiles up to 260 °C. The TA6F51AHM3/6B meets all thermal, surge, and reliability requirements specified in AEC-Q101 Rev D.
What does the "HM3/6B" suffix indicate in TA6F51AHM3/6B?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. The "6B" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 14,000 units. This differs from "6A" (7-inch reel, 3,500 units) and confirms the TA6F51AHM3/6B is optimized for high-volume SMT production lines requiring extended reel lengths.
How does the TA6F51AHM3/6B compare to standard SMAJ-series TVS diodes?
The TA6F51AHM3/6B shares the same 51 V nominal breakdown and 600 W peak power rating as SMAJ51A, but uses the smaller DO-221AC (SlimSMA) package instead of DO-214AC, achieving 0.95 mm height versus 2.3 mm. It also adds AEC-Q101 qualification and 185 °C junction rating - features absent in standard SMAJ devices. The TA6F51AHM3/6B thus provides superior thermal and automotive compliance in a more compact form factor.
What is the maximum reverse leakage current of the TA6F51AHM3/6B at its working voltage?
At its maximum stand-off voltage (VWM) of 43.6 V and ambient temperature of 25 °C, the TA6F51AHM3/6B exhibits a maximum reverse leakage current (IR) of 1.0 μA. At elevated temperature (TJ = 150 °C), leakage remains ≤ 5.0 μA - confirming stable blocking behavior across automotive operating conditions. This low leakage preserves efficiency in always-on power domains where the TA6F51AHM3/6B is deployed.
TA6F51AHM3/6B 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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)
TA6F51AHM3/6B FAQ
1.How can I place an order for TA6F51AHM3/6B through Aetrix?
Please submit a Request for Quotation (RFQ) for TA6F51AHM3/6B 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 TA6F51AHM3/6B reliable?
The price and inventory of TA6F51AHM3/6B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TA6F51AHM3/6B is usually 5 days.
3.What payment methods are accepted for TA6F51AHM3/6B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TA6F51AHM3/6B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TA6F51AHM3/6B?
TA6F51AHM3/6B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TA6F51AHM3/6B 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 TA6F51AHM3/6B?
For technical support, including TA6F51AHM3/6B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TA6F51AHM3/6B requirements.
6.How does Aetrix verify that TA6F51AHM3/6B is sourced from the original manufacturer or authorized distributors?
All TA6F51AHM3/6B 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 TA6F51AHM3/6B meets industry standards.
7.What is the process for return or replacement of TA6F51AHM3/6B?
All TA6F51AHM3/6B units undergo pre-shipment inspection (PSI). If there is an issue with TA6F51AHM3/6B, 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 TA6F51AHM3/6B part is unused and in its original packaging.
Return procedure for TA6F51AHM3/6B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TA6F51AHM3/6B Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
