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Vishay General Semiconductor - Diodes Division TPC33CAHM3/H
- Part No.:
- TPC33CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC33CAHM3/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,700
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Product details
Overview
TPC33CAHM3/H from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for high-reliability automotive and industrial circuit protection. It features a breakdown voltage of 31.4–34.7 V at 1 mA, clamping voltage of 45.7 V at 32.8 A, stand-off voltage of 28.2 V, and operates up to 185 °C junction temperature.
For engineers reviewing the TPC33CAHM3/H datasheet, TPC33CAHM3/H pinout, TPC33CAHM3/H application, or TPC33CAHM3/H equivalent, key selection criteria include bidirectional surge handling per 10/1000 μs waveform, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction for automotive sensor line and MOSFET gate protection.
Technical Context
This TVS diode uses junction-passivated PAR® technology to deliver stable clamping under repetitive transients while maintaining low leakage (<1 μA at VWM) and fast response time. Its bidirectional architecture enables symmetric clamping on both polarities without external polarity management.
The SMPC (TO-277A) package supports automated placement with 1.1 mm typical height and meets UL 94 V-0 flammability rating. Terminal design complies with J-STD-002 and JESD 22-B102 solderability standards, and HM3 suffix confirms JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at 1 mA - defines reliable conduction onset under reverse/forward surge conditions |
| VWM | 28.2 V - maximum continuous working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 45.7 V at 32.8 A - peak clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability per single non-repetitive event |
| TJ max | 185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| MSL Level | Level 1 per J-STD-020 - no floor life limitation; safe for standard reflow up to 260 °C peak |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, 2-terminal, bidirectional, unmarked polarity, 1.1 mm typical height, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity assignment |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical conduction path for ± surges |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation (PAR®) | Reduces parameter drift over temperature and lifetime, ensuring stable VBR and leakage across 185 °C operation |
| Low profile (1.1 mm) | Enables compact PCB layout in space-constrained modules such as ADAS sensor housings and motor control inverters |
| Matte tin-plated terminals | Guarantees solder joint integrity per J-STD-002 and JESD 22-B102, supporting lead-free reflow profiles |
| Halogen-free & RoHS | Meets automotive environmental compliance requirements (e.g., ELV, IMDS) without compromising electrical performance |
| JESD 201 Class 2 | Validated resistance to tin whisker growth, critical for long-life automotive ECUs operating >15 years |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus transceivers and Hall-effect sensors from load-dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping device placed across signal/power pins to limit voltage excursions below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to sensor ICs by clamping transients to ≤45.7 V while drawing <1 μA at 28.2 V standby. |
Use Scenario: Safeguarding high-side/low-side MOSFET gates in BLDC motor drivers against Miller-induced voltage spikes during PWM switching. IC Role / Device Role / Timing Role: Transient shunt across gate-source terminals to clamp dv/dt-induced overshoot before it triggers unintended turn-on. Use Value: Maintains gate integrity with 1500 W surge capacity and 32.8 A peak current handling without derating at 125 °C ambient. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to divert common-mode transients before reaching isolation transformers. Use Value: Delivers 45.7 V clamping at full 32.8 A surge current, compatible with IEEE 802.3af/bt surge immunity test levels. |
Use Scenario: Suppressing line-to-line and line-to-ground transients entering AC-DC adapters in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Secondary-side TVS across DC output rails to protect downstream DC-DC converters and USB controllers. Use Value: Enables compact design via 1.1 mm height and eliminates need for external polarity marking due to inherent bidirectionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5AT | Unidirectional; 33 V VWM; 500 W PPPM; DO-214AC package; higher VC (53.3 V) | Requires polarity-aware layout; lower surge rating limits use in high-energy automotive transients | Select when cost sensitivity outweighs AEC-Q101 requirement and surge energy is ≤500 W |
| TPC36CAHM3/H | Bidirectional; 30.8 V VWM; same SMPC package; 1500 W PPPM; VC = 49.9 V at 30.1 A | Higher clamping voltage but broader VBR range (34.2–37.8 V); suitable where system margin allows +4.2 V higher clamp | Choose for designs needing extended voltage headroom above 33 V nominal rails, e.g., 36 V battery systems |
Compared with SMAJ33A-E3/5AT and TPC36CAHM3/H, the TPC33CAHM3/H offers optimal balance of 28.2 V stand-off, 45.7 V clamping, and AEC-Q101 qualification-making it preferred for 24 V automotive sensor nodes where precise voltage margin and automotive reliability are jointly required.
Availability
TPC33CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive gate circuits, telecom line interface hardening, and consumer power adapter input stages requiring stable component supply and long-term lifecycle support.
Supply support for TPC33CAHM3/H 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, rectifiers, and protection devices for automotive, industrial, and computing markets.
The TPC33CAHM3/H belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment electronics where thermal stability and surge robustness are critical.
FAQ
What is the maximum clamping voltage of the TPC33CAHM3/H under rated surge conditions?
The TPC33CAHM3/H has a maximum clamping voltage (VC) of 45.7 V when subjected to its rated peak pulse current of 32.8 A using a 10/1000 μs waveform. This value is measured at TA = 25 °C and ensures downstream components remain within safe operating voltage limits during transient events. The TPC33CAHM3/H maintains this clamping performance across its full operating temperature range.
Is the TPC33CAHM3/H suitable for automotive applications?
Yes, the TPC33CAHM3/H is AEC-Q101 qualified and rated for junction temperatures up to 185 °C, making it suitable for under-hood and body-control module applications. Its halogen-free, RoHS-compliant construction and JESD 201 Class 2 whisker resistance further validate its suitability for automotive production. The TPC33CAHM3/H is explicitly designated for automotive use via the HM3 suffix in its ordering code.
What does the "HM3" suffix indicate in TPC33CAHM3/H?
The "HM3" suffix in TPC33CAHM3/H denotes Vishay's automotive-qualified variant: halogen-free, RoHS-compliant, AEC-Q101 qualified, and passing JESD 201 Class 2 whisker testing. The "/H" indicates packaging in 7-inch tape-and-reel format with 1500 units per reel. This suffix distinguishes it from commercial-grade versions and confirms compliance with automotive supply chain requirements.
How does the bidirectional nature of the TPC33CAHM3/H affect PCB layout?
The TPC33CAHM3/H has no polarity marking and functions identically regardless of orientation, simplifying PCB layout and eliminating risk of reverse installation. Engineers can place the TPC33CAHM3/H across any two nodes requiring symmetrical overvoltage protection-such as differential signal lines or power/ground rails-without verifying terminal assignment. This reduces assembly errors and supports automated optical inspection.
What is the moisture sensitivity level (MSL) rating for the TPC33CAHM3/H?
The TPC33CAHM3/H is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard lead-free reflow profiles with peak temperatures up to 260 °C without baking. This eliminates moisture-related popcorning risks and simplifies manufacturing logistics for high-volume SMT lines handling the TPC33CAHM3/H.
TPC33CAHM3/H 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/H FAQ
1.How can I place an order for TPC33CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC33CAHM3/H 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/H reliable?
The price and inventory of TPC33CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC33CAHM3/H is usually 5 days.
3.What payment methods are accepted for TPC33CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC33CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC33CAHM3/H?
TPC33CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC33CAHM3/H 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/H?
For technical support, including TPC33CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC33CAHM3/H requirements.
6.How does Aetrix verify that TPC33CAHM3/H is sourced from the original manufacturer or authorized distributors?
All TPC33CAHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of TPC33CAHM3/H?
All TPC33CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC33CAHM3/H, 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/H part is unused and in its original packaging.
Return procedure for TPC33CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC33CAHM3/H Tags
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