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Vishay General Semiconductor - Diodes Division TPC33AHM3/86A
- Part No.:
- TPC33AHM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC33AHM3/86A.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,591
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Product details
Overview
TPC33AHM3/86A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for high-reliability automotive and industrial surge protection. It features a standoff voltage of 28.2 V, breakdown voltage of 31.4–34.7 V at 1 mA, clamping voltage of 45.7 V at 32.8 A, and junction temperature rating up to +185 °C.
For engineers reviewing the TPC33AHM3/86A datasheet, TPC33AHM3/86A pinout, TPC33AHM3/86A application, or TPC33AHM3/86A equivalent, key selection criteria include its AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and suitability for protecting MOSFETs, sensor signal lines, and ICs against inductive switching transients.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time. Its unidirectional architecture provides precise overvoltage clamping on positive-going transients while maintaining low leakage (<1 μA at 28.2 V, <10 μA at TJ = 150 °C).
The device operates across -65 °C to +185 °C junction temperature range and is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine). Its thermal design supports high-power pulse dissipation without derating until ambient exceeds 25 °C, per standardized derating curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients without failure in automotive load-dump or inductive kick scenarios |
| Standoff Voltage (VWM) | 28.2 V - maximum continuous reverse voltage before significant leakage begins; sets system operating margin |
| Breakdown Voltage (VBR) | 31.4–34.7 V at 1 mA - defines onset of avalanche conduction; tight 10% tolerance ensures predictable clamping threshold |
| Clamping Voltage (VC) | 45.7 V at 32.8 A - limits peak voltage seen by protected circuit during worst-case surge event |
| Junction Temperature Range | -65 °C to +185 °C - enables use in under-hood automotive, industrial motor drives, and harsh-environment power supplies |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
| Package | SMPC (TO-277A) - surface-mount, low-profile (1.1 mm typical height), halogen-free, RoHS-compliant, J-STD-002 solderable |
Pinout & Package
SMPC (TO-277A) is a 3-terminal surface-mount package with cathode band marking on terminal 1. The package features matte tin-plated leads, meets UL 94 V-0 flammability rating, and complies with JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Anode-side reference node for unidirectional clamping | Connected to protected line; conducts when transient exceeds VBR, shunting current to ground via terminal 3 |
| 2 (Cathode) | Redundant cathode connection | Parallel cathode path improves current sharing and reduces effective dynamic impedance during high-current surges |
| 3 (Anode) | Common return path to ground or low-impedance reference | Provides low-inductance surge return path; must be routed with minimal trace length to maintain clamping performance |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR over lifetime and temperature, critical for long-term automotive module reliability |
| TJ = 185 °C capability | Supports operation in engine control units, battery management systems, and other high-temperature zones without derating |
| Very low profile (1.1 mm typical height) | Facilitates compact PCB layout in space-constrained modules such as ADAS sensors and infotainment head units |
| Meets MSL Level 1 (J-STD-020) | Allows unlimited floor life and reflow compatibility without dry-pack or baking requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a), improving protection margin |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protecting microcontroller I/O and CAN transceiver power rails from load-dump and inductive switching spikes in 12 V vehicle electrical systems. IC Role / Device Role: Unidirectional TVS clamp placed between supply rail and ground to limit transient overvoltage to safe levels. Use Value: Withstands 1500 W pulses and maintains clamping at ≤45.7 V, ensuring downstream logic remains within absolute maximum ratings during ISO 16750-2 tests. | Use Scenario: Safeguarding gate drivers and position feedback circuits in variable-frequency drives exposed to back-EMF and relay coil energy release. IC Role / Device Role: Transient suppression on encoder signal lines and isolated DC-DC bias rails. Use Value: Low 1.1 mm profile allows placement adjacent to connectors; AEC-Q101 qualification ensures robustness in factory automation environments with wide thermal cycling. |
| Automotive Sensor Signal Protection | Telecom Power Supply Input Stage |
Use Scenario: Shielding analog outputs of pressure, temperature, and current sensors from ESD and cable discharge events in ADAS camera modules. IC Role / Device Role: Point-of-use TVS on differential or single-ended sensor output traces. Use Value: Fast response time and low capacitance preserve signal integrity up to 1 MHz; 100% tested for whisker resistance prevents field failures in vibration-prone mounting locations. | Use Scenario: Front-end surge protection for AC/DC and DC/DC converters powering base station radios and optical line terminals. IC Role / Device Role: Primary-level clamping device on 24–48 V input bus prior to upstream filtering. Use Value: 200 A IFSM rating handles repetitive surges from lightning-induced coupling; halogen-free, RoHS-compliant construction meets telecom environmental compliance mandates. |
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-E3/57T (Vishay) | Same VWM (28.2 V), but lower PPPM (400 W); DO-214AC package; higher profile (2.3 mm) | Not AEC-Q101 qualified; limited to commercial/industrial use; unsuitable for under-hood automotive | Select only if power handling <400 W suffices and board height >2.3 mm is acceptable |
| TPC33AHM3_A (Vishay) | Identical electrical specs and SMPC package; differs only in packaging code ("A" vs "86A") and reel size (1500 vs 6500 pcs/reel) | No functional or application difference; both meet same AEC-Q101, MSL Level 1, and thermal specs | Choose based on volume procurement needs and logistics preference-not electrical or mechanical differentiation |
Compared with SMAJ33A-E3/57T, TPC33AHM3/86A delivers 3.75× higher surge power handling and automotive qualification in a 52% lower profile package; versus TPC33AHM3_A, it offers identical protection performance with alternate tape-and-reel configuration for high-volume production planning.
Availability
TPC33AHM3/86A is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive interface protection, and telecom power supply input staging requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge immunity.
Supply support for TPC33AHM3/86A 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The TPC33AHM3/86A belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for automotive-grade transient suppression where high junction temperature capability, low profile, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the TPC33AHM3/86A at its rated peak pulse current?
The TPC33AHM3/86A has a maximum clamping voltage (VC) of 45.7 V at 32.8 A peak pulse current (IPPM), measured under 10/1000 µs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is confirmed in the Electrical Characteristics table of Vishay document 89056. The TPC33AHM3/86A maintains this clamping performance across its full operating temperature range.
Is the TPC33AHM3/86A qualified for automotive applications?
Yes, the TPC33AHM3/86A is AEC-Q101 qualified and explicitly designated as automotive grade in Vishay documentation. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge per JESD22 standards. The TPC33AHM3/86A also supports junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications where thermal robustness is critical.
What does the "HM3/86A" suffix indicate in TPC33AHM3/86A?
The "HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified SMPC (TO-277A) package with matte tin plating and JESD201 Class 2 whisker resistance. The "86A" is the revision code indicating manufacturing lot and process version per Vishay's internal tracking; it does not alter electrical or mechanical specifications of the TPC33AHM3/86A device.
Can the TPC33AHM3/86A replace older TO-220 or DO-214AB TVS diodes in existing designs?
No direct drop-in replacement is guaranteed: the TPC33AHM3/86A uses SMPC (TO-277A), a 3-terminal surface-mount package with different footprint and thermal characteristics than through-hole TO-220 or 2-terminal DO-214AB. While electrical parameters may align, PCB layout, thermal relief, and mounting must be revalidated. The TPC33AHM3/86A requires dedicated land pattern per Vishay's recommended pad layout in document 89056.
What is the maximum reverse leakage current of the TPC33AHM3/86A at elevated temperature?
At TJ = 150 °C and VWM = 28.2 V, the TPC33AHM3/86A exhibits a maximum reverse leakage current (ID) of 10 μA, as specified in the Electrical Characteristics table. This value is significantly higher than the 1.0 μA maximum at 25 °C, reflecting thermally activated carrier generation. Designers must verify that this leakage level remains compatible with upstream bias networks or monitoring circuits in high-temperature operation.
TPC33AHM3/86A 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):
- 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)
TPC33AHM3/86A FAQ
1.How can I place an order for TPC33AHM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC33AHM3/86A 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 TPC33AHM3/86A reliable?
The price and inventory of TPC33AHM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC33AHM3/86A is usually 5 days.
3.What payment methods are accepted for TPC33AHM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC33AHM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC33AHM3/86A?
TPC33AHM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC33AHM3/86A 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 TPC33AHM3/86A?
For technical support, including TPC33AHM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC33AHM3/86A requirements.
6.How does Aetrix verify that TPC33AHM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC33AHM3/86A 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 TPC33AHM3/86A meets industry standards.
7.What is the process for return or replacement of TPC33AHM3/86A?
All TPC33AHM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC33AHM3/86A, 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 TPC33AHM3/86A part is unused and in its original packaging.
Return procedure for TPC33AHM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC33AHM3/86A Tags
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