My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPC6.8AHM3_A/I
- Part No.:
- TPC6.8AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC6.8AHM3_A/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,367
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPC6.8AHM3_A/I from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, featuring 6.45 V minimum breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), and 10.5 V maximum clamping voltage (VC) at 143 A peak pulse current. It delivers AEC-Q101 qualification, 185 °C junction temperature rating, and low-profile 1.1 mm height for automotive-grade circuit protection on power rails and signal lines.
For engineers reviewing the TPC6.8AHM3_A/I datasheet, TPC6.8AHM3_A/I pinout, TPC6.8AHM3_A/I application, or TPC6.8AHM3_A/I equivalent, this device serves as a high-reliability, surface-mount TVS diode optimized for inductive switching surge suppression in automotive ECUs, industrial sensor interfaces, and MOSFET gate protection where fast response (<1 ns), low incremental surge resistance, and MSL Level 1 handling are required.
Technical Context
This TVS diode operates as a unidirectional clamping device with avalanche breakdown behavior, designed to shunt transient energy away from sensitive downstream components during voltage spikes induced by inductive load switching or lightning surges. Its passivated anisotropic rectifier structure ensures stable VBR tolerance (±5 %) and low leakage (<1500 μA at VWM).
The device uses a TO-277A (SMPC) three-terminal configuration - two cathodes and one anode - enabling dual-cathode parallel connection for enhanced current sharing and thermal distribution. It meets JESD201 Class 2 whisker resistance and supports automated SMT placement with matte tin-plated leads compliant to J-STD-002 and JESD22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 1500 μA |
| VC @ IPPM | 10.5 V at 143 A (10/1000 μs) - limits protected node voltage during worst-case surge |
| PPPM | 1500 W - peak pulse power handling capacity under standardized 10/1000 μs waveform |
| TJ max. | 185 °C - enables operation in under-hood automotive environments without derating |
| Package | TO-277A (SMPC) - surface-mount, low-profile (1.1 mm height), dual-cathode three-terminal layout |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress test requirements |
Pinout & Package
TO-277A (SMPC) is a three-terminal surface-mount package with dual cathodes and single anode. Dimensions conform to JEDEC TO-277A standard: 4.80 mm × 3.70 mm footprint, 1.1 mm typical height, and recommended 6.80 mm × 4.72 mm copper pad layout for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current entry point during forward conduction or transient clamping | Serves as common reference for bidirectional surge path when paired with either cathode |
| Cathode 1 (Pin 2) | Primary avalanche terminal for reverse-biased clamping | Connected to protected line; forms main current path during overvoltage events |
| Cathode 2 (Pin 3) | Secondary cathode for parallel current sharing | Enables lower effective dynamic impedance and improved thermal distribution under high IPPM |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Ensures tight VBR tolerance (±5 %), stable leakage performance, and long-term reliability under thermal cycling |
| 185 °C junction temperature rating | Supports uninterrupted operation in engine control units and transmission modules without thermal shutdown |
| 1.1 mm profile height | Reduces board-level mechanical interference and improves airflow in densely packed automotive PCBs |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility without dry-pack or baking preconditioning |
| Dual-cathode TO-277A configuration | Provides symmetrical current division and lower effective clamping impedance versus single-cathode equivalents |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protects microcontroller I/O and CAN transceiver pins from load-dump and alternator ripple transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed directly at connector interface or IC input pin. Use Value: Limits voltage to ≤10.5 V during 143 A surge, preventing latch-up or oxide damage to 5 V logic inputs while maintaining AEC-Q101 compliance. |
Use Scenario: Shields analog output lines of pressure/temperature sensors from ESD and inductive kickback in factory automation PLCs. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between signal line and ground, with VWM = 5.8 V matching sensor supply range. Use Value: Clamps transients within 1 ns while adding <1 pF junction capacitance, preserving signal integrity up to 10 MHz bandwidth. |
| MOSFET Gate Driver Protection | Telecom Power Supply Input Stage |
|
Use Scenario: Placed across high-side N-channel MOSFET gate-source terminals to suppress Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp limiting VGS excursion beyond ±10.5 V during dV/dt events. Use Value: Prevents gate oxide breakdown with 10.5 V clamping ceiling and sub-1 ns response, compatible with 100 kHz–1 MHz PWM frequencies. |
Use Scenario: Installed at AC-DC converter input to absorb line surges and lightning-induced transients before primary-side regulation. IC Role / Device Role / Timing Role: Primary-stage surge diverter rated for 1500 W peak power and 143 A pulse current. Use Value: Withstands repeated 10/1000 μs surges up to 1500 W without parameter shift, supporting EN 61000-4-5 Level 4 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A | Lower PPPM (400 W), higher VC (10.5 V @ 38.2 A), SMA package (larger footprint, 2.3 mm height) | Not AEC-Q101 qualified; suitable for commercial-grade consumer electronics only | Select when cost sensitivity outweighs automotive qualification and surge margin requirements |
| TPC6.8AHM3_A/H | Identical electrical specs; differs only in tape-and-reel packaging (7" vs. 13" reel, 1500 vs. 6500 units) | No functional or application difference; same PCB layout and thermal design | Choose based on production volume and SMT line feeder compatibility |
Compared with SMAJ6.0A, TPC6.8AHM3_A/I provides 275 % higher surge power margin and automotive qualification; compared with TPC6.8AHM3_A/H, it offers identical protection performance but enables higher-volume automated assembly via 13" reel delivery.
Availability
TPC6.8AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interface circuits, and telecom power supply input stages requiring stable component supply, AEC-Q101 compliance, and consistent 1500 W surge capability.
Supply support for TPC6.8AHM3_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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and high-power density.
The TPC6.8AHM3_A/I belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for robust transient suppression in harsh automotive and industrial environments where thermal stability and surge repeatability are critical.
FAQ
What is the clamping voltage of TPC6.8AHM3_A/I at its rated peak pulse current?
The TPC6.8AHM3_A/I has a maximum clamping voltage (VC) of 10.5 V when subjected to its rated 143 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components see no more than 10.5 V during worst-case surge events, making TPC6.8AHM3_A/I suitable for protecting 5 V logic interfaces without additional series impedance.
Is TPC6.8AHM3_A/I qualified for automotive applications?
Yes, TPC6.8AHM3_A/I is AEC-Q101 qualified and rated for operation up to 185 °C junction temperature. It meets JESD201 Class 2 whisker resistance, MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance - all verified per Vishay's qualification report for the HM3 suffix family. These attributes make TPC6.8AHM3_A/I appropriate for engine control, body electronics, and ADAS subsystems.
How does the dual-cathode configuration of TPC6.8AHM3_A/I improve performance?
The dual-cathode layout in TPC6.8AHM3_A/I's TO-277A package allows parallel current sharing between Cathode 1 and Cathode 2 during transient events, reducing effective dynamic impedance and improving thermal distribution across the die. This results in lower clamping voltage variance under high-current pulses and enhanced reliability versus single-cathode TVS diodes with comparable ratings.
What is the standoff voltage (VWM) of TPC6.8AHM3_A/I and why does it matter?
The standoff voltage (VWM) of TPC6.8AHM3_A/I is 5.8 V - the maximum DC or RMS voltage the device can withstand continuously without exceeding 1500 μA leakage current. This parameter ensures reliable operation on 5 V supply rails or signal lines, preventing false triggering during normal operation while still allowing rapid avalanche conduction when transients exceed 6.45 V (VBR min).
Can TPC6.8AHM3_A/I replace SMAJ6.0A in existing designs?
TPC6.8AHM3_A/I is not a direct drop-in replacement for SMAJ6.0A due to different package (TO-277A vs. SMA), pinout (3-terminal vs. 2-terminal), and surge rating (1500 W vs. 400 W). While both are unidirectional TVS diodes, substituting TPC6.8AHM3_A/I requires PCB layout revision and validation of thermal performance. It is recommended only when upgrading for higher surge immunity or automotive qualification.
TPC6.8AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- PAR®, eSMP®
- 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):
- 143A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- TO-277A (SMPC)
TPC6.8AHM3_A/I FAQ
1.How can I place an order for TPC6.8AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC6.8AHM3_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 TPC6.8AHM3_A/I reliable?
The price and inventory of TPC6.8AHM3_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 TPC6.8AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPC6.8AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC6.8AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC6.8AHM3_A/I?
TPC6.8AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC6.8AHM3_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 TPC6.8AHM3_A/I?
For technical support, including TPC6.8AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC6.8AHM3_A/I requirements.
6.How does Aetrix verify that TPC6.8AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPC6.8AHM3_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 TPC6.8AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPC6.8AHM3_A/I?
All TPC6.8AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC6.8AHM3_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 TPC6.8AHM3_A/I part is unused and in its original packaging.
Return procedure for TPC6.8AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC6.8AHM3_A/I 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 …
