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Vishay General Semiconductor - Diodes Division TPC6.8AHM3/86A
- Part No.:
- TPC6.8AHM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC6.8AHM3/86A.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,497
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Product details
Overview
TPC6.8AHM3/86A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for clamping inductive-switching transients on power rails and signal lines. It features a 6.8 V breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 10.5 V clamping voltage (VC) at 143 A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the TPC6.8AHM3/86A datasheet, TPC6.8AHM3/86A pinout, TPC6.8AHM3/86A application, or TPC6.8AHM3/86A equivalent, key selection criteria include unidirectional clamping capability, 185 °C junction temperature rating, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement in high-reliability power rail protection designs.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable breakdown behavior and low incremental surge resistance under 10/1000 µs transients. Its unidirectional architecture enables forward-biased conduction during overvoltage events while maintaining low leakage (<1500 µA at VWM) at 25 °C and <10,000 µA at 150 °C.
The device operates across –65 °C to +185 °C junction temperature range and meets JESD201 Class 2 whisker resistance requirements. Its SMPC (TO-277A) package supports high thermal dissipation and is optimized for PCB layouts requiring minimal footprint and height clearance in space-constrained automotive and industrial modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 6.45 / 6.80 / 7.14 V - ensures reliable turn-on before downstream IC damage threshold |
| VWM | 5.8 V - maximum continuous reverse voltage without significant leakage |
| VC @ IPPM | 10.5 V at 143 A - clamps transient energy to safe level for 5 V logic and power stages |
| PPPM | 1500 W - handles high-energy inductive kickback per JEDEC 10/1000 µs waveform |
| TJ max | +185 °C - supports under-hood automotive environments and high-power density PCBs |
| Package | SMPC (TO-277A) - 3-pin surface-mount with cathode band marking and 1.1 mm profile |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
TPC6.8AHM3/86A is housed in the SMPC (TO-277A) package: a 3-terminal, single-anode/two-cathode configuration with cathode band marking on terminal 1 and 2, and anode on terminal 3. The package measures 4.80 × 3.70 × 1.10 mm (L × W × H) and features matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased cathode connection | Connected to protected line; forms clamping path with terminal 3 during overvoltage |
| 2 (Cathode) | Parallel cathode connection | Internally tied to terminal 1 - enables dual-cathode layout flexibility and current sharing |
| 3 (Anode) | Common anode reference | Typically grounded or connected to low-impedance return path for transient current sink |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Stable VBR drift < ±5 % over lifetime and temperature, critical for long-term automotive ECU protection |
| Low profile (1.1 mm height) | Enables placement beneath connectors or near tall components in compact ADAS modules |
| MSL Level 1 | Zero floor life limitation - can be stored indefinitely before reflow without baking |
| Halogen-free & RoHS | Complies with automotive material compliance requirements (Vishay Doc. 99912) |
| Fast response time | Sub-nanosecond turn-on ensures clamping before sensitive MOSFET gate oxide breakdown |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load-dump and jump-start transients in body control modules. IC Role / Device Role: Primary unidirectional clamping element placed between fuse and LDO input. Use Value: Limits voltage to ≤10.5 V during 143 A surges, preventing brownout or latch-up in 5 V supply domains. | Use Scenario: Shielding analog output lines of pressure sensors from ESD and relay-coil flyback in factory automation PLC I/O cards. IC Role / Device Role: Point-of-entry TVS on 0–5 V sensor output traces before ADC front-end. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <12 V peak, preserving signal integrity and ADC accuracy. |
| Consumer Power Adapter Surge Suppression | Telecom DC Power Input Protection |
Use Scenario: Safeguarding USB-C PD controller VBUS monitoring circuitry against AC/DC adapter output overshoot and hot-plug spikes. IC Role / Device Role: Secondary clamping stage after primary MOV, targeting fast-rising transients missed by bulk suppression. Use Value: Responds in <1 ns to clamp 100 V transients to ≤10.5 V, protecting 3.3 V logic-level sense resistors and comparators. | Use Scenario: Securing -48 V telecom power feed inputs against lightning-induced surges in remote radio units. IC Role / Device Role: Unidirectional TVS on negative rail, referenced to chassis ground with low-inductance layout. Use Value: Handles 1500 W pulses without degradation, maintaining clamping performance after repeated 10/1000 µs stress events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.0A | Lower PPPM (400 W), SMA package (2.5 mm height), VC = 10.5 V @ 38.2 A | Not rated for automotive AEC-Q101; limited to consumer/industrial non-critical rails | Choose when cost-sensitive, lower-energy transients, and board height >2.5 mm are acceptable |
| TPC6.8AHM3_A | Same die and electrical specs; differs only in tape-and-reel packaging (H vs. 86A suffix denotes reel size and orientation) | No functional difference - identical performance and mounting | Select for standard 7" reel logistics; TPC6.8AHM3/86A is optimized for 13" reels and high-volume SMT lines |
Compared with SMAJ6.0A, TPC6.8AHM3/86A delivers 3.75× higher surge power handling and automotive qualification, while TPC6.8AHM3_A shares identical clamping behavior but differs only in packaging logistics - making TPC6.8AHM3/86A the preferred choice for AEC-Q101-compliant, high-energy automotive power rail protection.
Availability
TPC6.8AHM3/86A is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and telecom power input circuits requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for TPC6.8AHM3/86A 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, thermal performance, and automotive qualification.
The TPC6.8AHM3/86A belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for robust transient suppression in harsh automotive and industrial environments where 185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of TPC6.8AHM3/86A and how is it measured?
The clamping voltage (VC) of TPC6.8AHM3/86A is 10.5 V, measured at 143 A peak pulse current using a 10/1000 µs waveform per Fig. 3 in Vishay Document 89056. This value represents the maximum voltage seen across the device during standardized surge testing and defines the upper limit imposed on protected circuitry during transient events.
Is TPC6.8AHM3/86A suitable for bidirectional transient protection?
No, TPC6.8AHM3/86A is unidirectional only. Its internal structure supports clamping only in reverse bias - forward conduction occurs above ~3.5 V, but it is not characterized or rated for bidirectional surge suppression. For bidirectional applications, Vishay's TCP6.8CA or similar symmetric TVS devices must be selected instead of TPC6.8AHM3/86A.
Does TPC6.8AHM3/86A require derating at elevated ambient temperatures?
Yes, TPC6.8AHM3/86A must be derated above 25 °C ambient per Fig. 2 in its datasheet. At 85 °C ambient, its peak pulse power drops to approximately 75 % of 1500 W (≈1125 W), and at 125 °C, it falls to ~50 %. Designers must apply this derating curve when sizing TPC6.8AHM3/86A for under-hood or enclosed industrial environments.
What does the "86A" suffix indicate in TPC6.8AHM3/86A?
The "86A" suffix in TPC6.8AHM3/86A specifies the packaging configuration: 13-inch diameter plastic tape-and-reel with 6500 units per reel and orientation code "A". It is functionally identical to TPC6.8AHM3_A (7-inch reel, 1500 units), differing only in logistics - not electrical performance, reliability, or footprint. Both share the same HM3 halogen-free, AEC-Q101-qualified die.
Can TPC6.8AHM3/86A be used in parallel to increase surge current handling?
Parallel use of TPC6.8AHM3/86A devices is not recommended without external balancing. Due to VBR tolerance (±5 %), mismatched turn-on timing may cause current hogging and premature failure. If higher IPPM is required, select a higher-rated part such as TPC7.5AHM3/86A or consult Vishay's application note AN86 for verified multi-device layout techniques applicable to TPC6.8AHM3/86A.
TPC6.8AHM3/86A 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:
- Obsolete
- 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)
TPC6.8AHM3/86A FAQ
1.How can I place an order for TPC6.8AHM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC6.8AHM3/86A 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 TPC6.8AHM3/86A reliable?
The price and inventory of TPC6.8AHM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC6.8AHM3/86A is usually 5 days.
3.What payment methods are accepted for TPC6.8AHM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC6.8AHM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC6.8AHM3/86A?
TPC6.8AHM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC6.8AHM3/86A 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 TPC6.8AHM3/86A?
For technical support, including TPC6.8AHM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC6.8AHM3/86A requirements.
6.How does Aetrix verify that TPC6.8AHM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC6.8AHM3/86A 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 TPC6.8AHM3/86A meets industry standards.
7.What is the process for return or replacement of TPC6.8AHM3/86A?
All TPC6.8AHM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC6.8AHM3/86A, 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 TPC6.8AHM3/86A part is unused and in its original packaging.
Return procedure for TPC6.8AHM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC6.8AHM3/86A Tags
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