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Vishay General Semiconductor - Diodes Division TPC33CAHM3/I
- Part No.:
- TPC33CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC33CAHM3/I.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,704
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Product details
Overview
TPC33CAHM3/I from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in the SMPC (TO-277A) surface-mount package, designed for high-reliability automotive and industrial electronics protection. It features a breakdown voltage of 31.4–34.7 V at 1 mA, clamps to ≤45.7 V at 32.8 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC33CAHM3/I datasheet, TPC33CAHM3/I pinout, TPC33CAHM3/I application, or TPC33CAHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, bidirectional polarity, low-profile 1.1 mm height, MSL Level 1 rating, and halogen-free RoHS-compliant construction - all critical for automotive sensor line and MOSFET gate protection in harsh environments.
Technical Context
The TPC33CAHM3/I implements Vishay's PAR® (Protected Avalanche Rectifier) technology with junction passivation optimized for stable avalanche behavior under repetitive transients. Its bidirectional structure enables symmetrical clamping on both polarities without external polarity management.
Rated for 10/1000 μs surge waveforms per ANSI/IEEE C62.35, it delivers 1500 W peak pulse power with ≤1.0 μA reverse leakage at 28.2 V standoff voltage and maintains full performance across -65 °C to +185 °C operating junction temperature range - validated per AEC-Q101 stress testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at IT = 1 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 28.2 V - maximum continuous working voltage before leakage exceeds 1.0 μA, ensuring signal integrity in 24 V automotive systems |
| VC @ IPPM | ≤45.7 V at 32.8 A - clamping voltage limits downstream IC/MOSFET stress during ISO 7637-2 pulse 5a/b surges |
| PPPM | 1500 W - peak pulse power handling capability for short-duration inductive switching transients |
| TJ max | +185 °C - enables operation in engine bay or powertrain modules without thermal derating penalties |
| Package | SMPC (TO-277A) - ultra-low profile (1.1 mm typical height), J-STD-020 MSL Level 1, 260 °C reflow compatible |
| Qualification | AEC-Q101 qualified - certified for automotive-grade reliability including HTGB, HTRB, and temperature cycling |
Pinout & Package
TPC33CAHM3/I uses a 2-terminal SMPC (TO-277A) package with no polarity marking due to bidirectional symmetry. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as input/output path - no orientation required during placement; symmetric clamping in both directions |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired with Terminal 1 to form a single bidirectional TVS junction; connects across protected line and ground or differential pair |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation PAR® design | Ensures stable, repeatable avalanche characteristics over lifetime and temperature - critical for automotive field reliability |
| 185 °C junction rating | Eliminates thermal derating in under-hood applications up to ambient +125 °C with sufficient PCB copper |
| 1.1 mm typical height | Enables use in space-constrained modules (e.g., ADAS ECUs, battery management sensors) without mechanical interference |
| AEC-Q101 qualification | Validates robustness against humidity, temperature cycling, and high-temperature reverse bias - required for Tier 1 automotive supply |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without baking or special handling - reduces manufacturing cost and risk |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protecting LIN/CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in vehicle body control modules. IC Role / Device Role: Bidirectional clamping device placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤45.7 V while maintaining <1.0 μA leakage at 28.2 V - preserving signal fidelity and preventing false triggers in 12 V/24 V systems. |
Use Scenario: Safeguarding microcontroller GPIOs and optocoupler inputs connected to relay coils or solenoid drivers in PLC I/O modules. IC Role / Device Role: Primary surge suppression element across DC control lines subject to 10/1000 μs inductive spikes. Use Value: Absorbs 1500 W peak pulses without degradation, enabling >100,000 surge cycles per AEC-Q101 life testing - reducing field failure rates. |
| Consumer Power Adapter Outputs | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side overvoltage protection on 5–24 V DC outputs of wall adapters and USB-PD power bricks exposed to ESD and lightning-induced surges. IC Role / Device Role: Final-stage clamp before connector or downstream DC-DC converter. Use Value: Halogen-free, RoHS-compliant construction meets global regulatory requirements; 1.1 mm height allows integration into slim adapter housings. |
Use Scenario: Protecting Ethernet PHY interfaces and PoE-powered devices from fast-rising transients on data pairs and power rails. IC Role / Device Role: Low-capacitance bidirectional TVS placed across differential pairs or between power/ground rails. Use Value: Clamps within nanoseconds to limit voltage overshoot below IC absolute maximum ratings - verified by 10/1000 μs waveform compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5A (Vishay) | Unidirectional; SMA package; 600 W PPPM; VC = 53.3 V @ 11.9 A | Requires polarity-aware layout; lower power rating limits use in high-energy automotive transients | Select when unidirectional protection suffices and board space allows larger SMA footprint |
| TPC33CAHM3/H (Vishay) | Same electrical specs; identical SMPC package; differs only in tape/reel size (1500 vs. 6500 units) and delivery mode (7″ vs. 13″ reel) | No functional or application difference - purely packaging and logistics variant | Choose TPC33CAHM3/H for prototyping or low-volume builds requiring smaller reels |
Compared with SMAJ33A-E3/5A, TPC33CAHM3/I offers 2.5× higher surge power and bidirectional operation in a lower-profile package, making it superior for automotive front-end protection; versus TPC33CAHM3/H, it provides identical performance with optimized logistics for high-volume production runs.
Availability
TPC33CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive inputs, and telecom line interface protection requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle support.
Supply support for TPC33CAHM3/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, TVS devices, and MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The TPC33CAHM3/I belongs to Vishay's PAR® TVS family, engineered specifically for high-energy transient suppression in automotive and industrial environments where thermal stability, AEC-Q101 compliance, and ultra-low profile are mandatory.
FAQ
What is the clamping voltage of the TPC33CAHM3/I under maximum rated surge current?
The TPC33CAHM3/I clamps to a maximum of 45.7 V when subjected to its rated peak pulse current of 32.8 A using the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components remain within safe operating voltage limits during surge events. The clamping performance is guaranteed across the full -65 °C to +185 °C junction temperature range specified for the TPC33CAHM3/I.
Is the TPC33CAHM3/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the TPC33CAHM3/I is explicitly AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 87649, Revision: 17-Sep-2021). It undergoes rigorous stress testing including high-temperature reverse bias, temperature cycling, and humidity bias life - meeting automotive-grade reliability requirements for use in engine control units, ADAS sensors, and body electronics. The HM3 suffix denotes this qualification for the TPC33CAHM3/I.
What does the "HM3" suffix mean in TPC33CAHM3/I?
The "HM3" suffix in TPC33CAHM3/I indicates halogen-free, RoHS-compliant construction, AEC-Q101 qualification, and compliance with JESD 201 Class 2 whisker resistance testing. It also specifies the SMPC (TO-277A) package and matte tin-plated terminals solderable per J-STD-002. The "I" denotes 13-inch tape-and-reel packaging with 6500 units per reel - a logistics identifier distinct from the electrical and reliability attributes of the TPC33CAHM3/I.
Can the TPC33CAHM3/I be used in bidirectional signal line protection?
Yes, the TPC33CAHM3/I is inherently bidirectional and requires no polarity marking or orientation during placement. Its symmetrical avalanche structure provides identical clamping behavior for positive and negative transients, making it ideal for protecting differential buses (e.g., CAN, LIN), AC-coupled analog signals, or any line where voltage polarity reversal may occur. This bidirectional capability is a core design feature of the TPC33CAHM3/I.
What is the maximum operating temperature for the TPC33CAHM3/I junction?
The TPC33CAHM3/I has a maximum junction temperature (TJ) rating of +185 °C, validated per AEC-Q101 test conditions. This enables reliable operation in high-ambient environments such as engine compartments or industrial enclosures without thermal derating. The device maintains full electrical specifications across its full -65 °C to +185 °C operating junction and storage temperature range, a key differentiator of the TPC33CAHM3/I.
TPC33CAHM3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 32.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC33CAHM3/I FAQ
1.How can I place an order for TPC33CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC33CAHM3/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 TPC33CAHM3/I reliable?
The price and inventory of TPC33CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC33CAHM3/I is usually 5 days.
3.What payment methods are accepted for TPC33CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC33CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC33CAHM3/I?
TPC33CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC33CAHM3/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 TPC33CAHM3/I?
For technical support, including TPC33CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC33CAHM3/I requirements.
6.How does Aetrix verify that TPC33CAHM3/I is sourced from the original manufacturer or authorized distributors?
All TPC33CAHM3/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 TPC33CAHM3/I meets industry standards.
7.What is the process for return or replacement of TPC33CAHM3/I?
All TPC33CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC33CAHM3/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 TPC33CAHM3/I part is unused and in its original packaging.
Return procedure for TPC33CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC33CAHM3/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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