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Vishay General Semiconductor - Diodes Division TPC33AHM3_A/H
- Part No.:
- TPC33AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC33AHM3_A/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:8,152
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Product details
Overview
TPC33AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for high-reliability automotive and industrial electronics protection. It features a standoff voltage of 28.2 V, breakdown voltage range of 31.4–34.7 V at 1 mA, clamping voltage of 45.7 V at 32.8 A peak pulse current, and junction temperature rating up to +185 °C.
For engineers reviewing the TPC33AHM3_A/H datasheet, TPC33AHM3_A/H pinout, TPC33AHM3_A/H application, or TPC33AHM3_A/H equivalent, this device serves as a robust overvoltage protection solution for MOSFET gate drivers, sensor signal lines, and power supply rails where fast response (<1 ns), low profile (1.1 mm height), and AEC-Q101 qualification are critical selection criteria.
Technical Context
The TPC33AHM3_A/H employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and excellent clamping performance under 10/1000 µs transients. Its unidirectional architecture provides forward conduction capability with VF = 3.5 V at 100 A, enabling use in DC-biased protection paths.
Rated for TJ = –65 °C to +185 °C operation and qualified to AEC-Q101, it supports automotive-grade reliability requirements. The TO-277A (SMPC) package meets JESD201 Class 2 whisker testing and MSL Level 1 per J-STD-020, ensuring compatibility with standard SMT reflow processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum continuous reverse operating voltage before clamping begins; sets safe DC bias margin for protected circuitry. |
| VBR min/max | 31.4 V / 34.7 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during transients without premature conduction. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; defines maximum energy absorption capability. |
| VC @ IPPM | 45.7 V at 32.8 A - Clamping voltage under rated surge; determines maximum stress imposed on downstream components. |
| TJ max | +185 °C - Enables operation in under-hood automotive environments and high-power industrial enclosures without thermal derating. |
| Package | TO-277A (SMPC) - Surface-mount, 3-terminal, low-profile (1.1 mm typical height) package compatible with automated placement and reflow. |
Pinout & Package
TO-277A (SMPC) is a 3-terminal surface-mount package with cathode-anode-cathode configuration. Terminals are matte tin-plated and solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage events to shunt current to ground or rail. |
| 2 (Anode) | Forward reference node | Typically tied to system ground or lower-potential rail; establishes DC bias path for unidirectional clamping. |
| 3 (Cathode) | Reverse-biased terminal | Electrically identical to Pin 1; dual-cathode layout improves current sharing and thermal distribution in high-surge applications. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR over lifetime and temperature, reducing drift in automotive applications. |
| Low profile height | 1.1 mm typical - enables use in space-constrained modules such as ADAS ECUs and compact motor controllers. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| MSL Level 1 | No floor life limitation - eliminates baking requirements and simplifies manufacturing logistics for high-volume SMT assembly. |
| Fast response time | <1 ns - limits voltage overshoot during ESD and load-switching transients, protecting sensitive gate oxides and analog front-ends. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed power distribution modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rails to clamp transients up to ISO 7637-2 Pulse 5a. Use Value: Withstands 1500 W surges and operates up to +185 °C, eliminating need for derating in engine compartment installations. |
Use Scenario: Safeguarding IGBT gate driver inputs from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Low-capacitance, fast-clamping TVS connected between gate and emitter to suppress dv/dt-induced false triggering. Use Value: 45.7 V clamping at 32.8 A ensures gate oxide remains below 20 V stress during 10/1000 µs transients. |
| Automotive Sensor Interface | Telecom Power Supply Input |
|
Use Scenario: Shielding LIN/CAN transceiver signal lines from ESD and inductive coupling in body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS on bidirectional data lines referenced to local ground, leveraging dual-cathode symmetry. Use Value: Dual-cathode TO-277A layout minimizes parasitic inductance and improves common-mode surge rejection. |
Use Scenario: Front-end protection of 48 V telecom rectifier outputs exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary clamping device in series with upstream fuse and parallel to bulk capacitor. Use Value: 1500 W PPPM rating and 32.8 A IPPM support compliance with Level 4 (4 kV) surge immunity requirements. |
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) | Lower PPPM (400 W), SMA package (higher thermal resistance), VWM = 33 V, VC = 53.3 V at 7.5 A | Not suitable for 1500 W load-dump events; limited to low-energy ESD and signal-line protection | Select only when surge energy is ≤400 W and board space allows larger SMA footprint |
| TPC33AHE3_A/H (Vishay) | Same electrical specs but HM3_A/H vs. HE3_A/H packaging: HM3 uses halogen-free molding compound; HE3 does not specify halogen status | Both meet AEC-Q101 and TO-277A mechanicals; HE3 variant lacks explicit halogen-free certification | Choose TPC33AHM3_A/H when RoHS-compliant, halogen-free construction is required per IPC-1752A reporting |
Compared with SMAJ33A-E3/5A and TPC33AHE3_A/H, the TPC33AHM3_A/H uniquely delivers 1500 W surge capacity in a low-profile, halogen-free, AEC-Q101-qualified TO-277A package-enabling single-device compliance with automotive load-dump and industrial surge immunity standards without layout or thermal redesign.
Availability
TPC33AHM3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drives, automotive sensor interfaces, and telecom power supply input circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified TVS protection.
Supply support for TPC33AHM3_A/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The TPC series was developed specifically for high-energy transient suppression in automotive and industrial environments, targeting applications demanding AEC-Q101 qualification, 1500 W surge capability, and compact surface-mount packaging.
FAQ
What is the clamping voltage of TPC33AHM3_A/H under maximum rated surge current?
The TPC33AHM3_A/H has a maximum clamping voltage (VC) of 45.7 V when subjected to its rated peak pulse current (IPPM) of 32.8 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components remain within safe voltage limits during standardized surge events. The TPC33AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is TPC33AHM3_A/H suitable for automotive under-hood applications?
Yes, the TPC33AHM3_A/H is explicitly qualified to AEC-Q101 and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control units and battery management systems. Its TO-277A package passes JESD201 Class 2 whisker testing and MSL Level 1, supporting reliable reflow assembly and long-term thermal cycling stability in harsh environments. The TPC33AHM3_A/H meets these requirements without derating.
What does the "HM3_A/H" suffix indicate in TPC33AHM3_A/H?
The "HM3_A/H" suffix denotes a halogen-free, RoHS-compliant, AEC-Q101-qualified version of the TPC33A in TO-277A (SMPC) package, with "A" indicating revision level and "H" specifying 7-inch tape-and-reel packaging (1500 units per reel). The HM3 prefix confirms compliance with Vishay's material categorization per doc#99912 and satisfies automotive OEM chemical content reporting requirements. The TPC33AHM3_A/H is traceable to this specification.
How does the dual-cathode configuration of TPC33AHM3_A/H improve protection performance?
The dual-cathode (Pin 1 and Pin 3) configuration in the TO-277A package of TPC33AHM3_A/H reduces effective series inductance and improves current sharing during high-di/dt transients, resulting in more consistent clamping behavior and lower voltage overshoot. This layout also enhances thermal dissipation by distributing surge current across two parallel paths. The TPC33AHM3_A/H leverages this structure to maintain 45.7 V clamping even under repetitive 1500 W pulses.
Can TPC33AHM3_A/H replace SMAJ33A in existing designs?
No, TPC33AHM3_A/H is not a drop-in replacement for SMAJ33A due to differences in package (TO-277A vs. SMA), power rating (1500 W vs. 400 W), and pinout (3-terminal dual-cathode vs. 2-terminal). While both have similar VWM (~28–33 V), the TPC33AHM3_A/H requires PCB layout changes and thermal validation. Redesign is necessary to exploit its higher surge capability. The TPC33AHM3_A/H must be integrated as a new protection node-not substituted directly.
TPC33AHM3_A/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:
- 1
- Bidirectional Channels:
- -
- 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 ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC33AHM3_A/H FAQ
1.How can I place an order for TPC33AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC33AHM3_A/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 TPC33AHM3_A/H reliable?
The price and inventory of TPC33AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC33AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPC33AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC33AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC33AHM3_A/H?
TPC33AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC33AHM3_A/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 TPC33AHM3_A/H?
For technical support, including TPC33AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC33AHM3_A/H requirements.
6.How does Aetrix verify that TPC33AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC33AHM3_A/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 TPC33AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPC33AHM3_A/H?
All TPC33AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC33AHM3_A/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 TPC33AHM3_A/H part is unused and in its original packaging.
Return procedure for TPC33AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC33AHM3_A/H Tags
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