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Vishay General Semiconductor - Diodes Division TPC22AHM3_A/H
- Part No.:
- TPC22AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC22AHM3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,530
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Product details
Overview
TPC22AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, featuring breakdown voltage of 20.9–23.1 V at 1 mA, clamping voltage of 30.6 V at 49.0 A peak pulse current, and 185 °C maximum junction temperature. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in automotive and industrial power electronics.
For engineers reviewing the TPC22AHM3_A/H datasheet, TPC22AHM3_A/H pinout, TPC22AHM3_A/H application, or TPC22AHM3_A/H equivalent, key selection criteria include unidirectional polarity, 185 °C TJ rating, AEC-Q101 qualification, low-profile 1.1 mm height, and MSL Level 1 moisture sensitivity - all critical for under-hood automotive modules and high-reliability industrial controllers.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective clamping of 10/1000 µs transients before downstream components are damaged. Its unidirectional architecture supports DC-biased protection paths with forward conduction capability up to 200 A IFSM.
The device operates across -65 °C to +185 °C junction temperature range and meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements. Its TO-277A (SMPC) package features matte tin-plated terminals solderable per J-STD-002 and JESD22-B102, optimized for automated placement on dense PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise voltage threshold where avalanche conduction begins, ensuring reliable turn-on before system overvoltage damage |
| VWM | 18.8 V - maximum continuous reverse working voltage; must exceed normal operating rail to prevent leakage during steady-state |
| VC @ IPPM | 30.6 V at 49.0 A - clamped voltage during 10/1000 µs surge; determines worst-case stress seen by protected IC or MOSFET |
| PPPM | 1500 W - peak pulse power handling capacity; enables robust protection against high-energy transients like ISO 7637-2 Pulse 5a |
| TJ max. | +185 °C - allows operation in under-hood automotive environments without thermal derating penalties |
| Polarity | Unidirectional - suitable only for DC-biased lines; blocks reverse current but conducts forward surges like load dump events |
| MSL Level | Level 1 (per J-STD-020) - no floor life limitation; can be stored indefinitely before reflow without baking |
Pinout & Package
TPC22AHM3_A/H is housed in a TO-277A (SMPC) surface-mount package measuring 4.80 × 3.70 × 1.10 mm (L × W × H), with cathode-anode-cathode terminal arrangement and 1.24 mm lead pitch. The package is halogen-free, RoHS-compliant, and AEC-Q101 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Anode-side cathode connection | Forms one end of the unidirectional avalanche junction; connects to protected line side in series or shunt configuration |
| Pin 2 (Anode) | Avalanche diode anode | Connects to ground or low-impedance return path; carries full surge current during clamping |
| Pin 3 (Cathode) | Second cathode terminal | Provides mechanical stability and thermal path; electrically tied to Pin 1 internally - not isolated |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Low profile height | 1.1 mm typical - enables use in space-constrained modules such as automotive body control units and motor drivers |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge lifetime testing |
| Low incremental surge resistance | Minimizes VC rise under high-current pulses, reducing voltage overshoot on protected nodes |
| Fast response time | <1 ns - initiates clamping before transient energy couples into sensitive circuitry |
Applications
| Automotive Body Control Module (BCM) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump and inductive kickback in door module PCBs. IC Role / Device Role: Shunt-type transient suppressor placed between LIN line and chassis ground. Use Value: Clamps 30.6 V at 49 A while maintaining 18.8 V stand-off, preventing latch-up or ESD damage to 5 V logic interfaces. | Use Scenario: Safeguarding gate drivers and current-sense amplifiers from flyback spikes generated by IGBT/MOSFET switching in 3-phase inverters. IC Role / Device Role: Unidirectional TVS connected across DC-link capacitor rails and gate drive return paths. Use Value: Withstands 1500 W peak pulse and 185 °C junction temperature, enabling operation near heatsinks without thermal shutdown. |
| Telecom Power Supply Input | Consumer Appliance Mainboard |
Use Scenario: Suppressing AC-line coupled surges and lightning-induced transients entering telecom rectifier inputs. IC Role / Device Role: Primary-level unidirectional clamp on secondary-side DC output rails feeding PoE controllers. Use Value: Meets IEC 61000-4-5 Level 3 (1 kV/2 Ω) immunity with 30.6 V clamping, preserving 12 V/48 V PoE compliance margins. | Use Scenario: Shielding MCU reset lines and communication buses (I²C, UART) from ESD and relay contact bounce in washing machine control boards. IC Role / Device Role: Point-of-use TVS on 3.3 V supply and signal traces adjacent to electromechanical actuators. Use Value: Low-leakage IR ≤1 μA at 18.8 V ensures no impact on battery-backed real-time clocks or low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W and TO-277A footprint not identical - requires layout revision | Rated for general-purpose consumer electronics; lacks AEC-Q101 qualification and 185 °C TJ rating | Select when cost sensitivity outweighs automotive qualification and high-energy surge immunity |
| TPC22AHE3_A/H | Identical electrical specs and TO-277A package, but HM3 suffix denotes halogen-free, RoHS-compliant version with same AEC-Q101 status | No functional difference; differs only in material compliance documentation and traceability packaging | Choose for projects requiring full halogen-free declaration and extended supply chain traceability |
Compared with SMAJ22A and TPC22AHE3_A/H, the TPC22AHM3_A/H delivers higher surge robustness (1500 W vs. 400 W) and automotive-grade thermal margin (+185 °C), while sharing identical clamping performance and footprint with TPC22AHE3_A/H - making it optimal for safety-critical vehicle subsystems where both reliability and compliance are mandatory.
Availability
TPC22AHM3_A/H is available at Aetrix Electronics and suitable for automotive body control modules, industrial motor drives, telecom power supplies, and consumer appliance mainboards requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for TPC22AHM3_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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The TPC series is part of Vishay's PAR® (Protection and Rectification) family, engineered specifically for high-energy transient suppression in harsh-environment applications such as automotive power distribution and industrial automation systems.
FAQ
What is the maximum clamping voltage of the TPC22AHM3_A/H under a 10/1000 µs surge?
The TPC22AHM3_A/H has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 49.0 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and represents the worst-case voltage imposed on protected circuitry during surge events - critical for verifying compatibility with downstream IC absolute maximum ratings.
Is the TPC22AHM3_A/H qualified for automotive applications?
Yes, the TPC22AHM3_A/H is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature. It undergoes rigorous stress testing including temperature cycling, humidity bias, and surge lifetime validation per automotive standards - making it suitable for under-hood and chassis-mounted modules where reliability under thermal and electrical stress is mandatory.
What does the "HM3" suffix indicate in TPC22AHM3_A/H?
The "HM3" suffix in TPC22AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. The "A" indicates revision level, and "/H" specifies packaging in 7-inch plastic tape and reel with 1500 units per reel - essential for SMT line compatibility and environmental compliance tracking.
Can the TPC22AHM3_A/H replace bidirectional TVS diodes in existing designs?
No, the TPC22AHM3_A/H is unidirectional only and cannot replace bidirectional TVS diodes without circuit redesign. It conducts forward current above VBR but blocks reverse voltage beyond VWM; using it in AC-coupled or bipolar signal lines may cause failure. For bidirectional protection, select a matched pair or dedicated bidirectional variant like TPC22CAHM3_A/H.
What is the standoff voltage rating of the TPC22AHM3_A/H?
The TPC22AHM3_A/H has a maximum reverse standoff voltage (VWM) of 18.8 V at 25 °C. This is the highest DC or continuous AC peak voltage the device can block without significant leakage - it must be selected ≥10–20 % above the nominal operating voltage of the protected line to ensure stable operation during normal conditions.
TPC22AHM3_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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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)
TPC22AHM3_A/H FAQ
1.How can I place an order for TPC22AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC22AHM3_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 TPC22AHM3_A/H reliable?
The price and inventory of TPC22AHM3_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 TPC22AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPC22AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC22AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC22AHM3_A/H?
TPC22AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC22AHM3_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 TPC22AHM3_A/H?
For technical support, including TPC22AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC22AHM3_A/H requirements.
6.How does Aetrix verify that TPC22AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC22AHM3_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 TPC22AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPC22AHM3_A/H?
All TPC22AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC22AHM3_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 TPC22AHM3_A/H part is unused and in its original packaging.
Return procedure for TPC22AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC22AHM3_A/H Tags
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