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Vishay General Semiconductor - Diodes Division TPC24AHM3_A/H
- Part No.:
- TPC24AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC24AHM3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,818
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Product details
Overview
TPC24AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for high-reliability overvoltage protection of sensitive electronics. It features a breakdown voltage of 22.8–25.2 V at 1 mA, clamping voltage of 33.2 V at 45.2 A peak pulse current, and operates up to +185 °C junction temperature. It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive powertrain control units.
For engineers reviewing the TPC24AHM3_A/H datasheet, TPC24AHM3_A/H pinout, TPC24AHM3_A/H application, or TPC24AHM3_A/H equivalent, key selection criteria include its 20.5 V stand-off voltage, 1.1 mm profile for space-constrained PCB layouts, low incremental surge resistance, fast response time, and MSL Level 1 moisture sensitivity rating.
Technical Context
The TPC24AHM3_A/H employs passivated anisotropic rectifier technology optimized for robust transient suppression in automotive-grade environments. Its unidirectional architecture enables integration into DC-biased signal or power rails where reverse conduction must be blocked.
It delivers 1500 W peak pulse power under 10/1000 µs waveform conditions with clamping performance validated at 45.2 A IPPM. Thermal design is supported by a maximum junction temperature of +185 °C and transient thermal impedance curves referenced to JEDEC-standard mounting on 2 oz copper PCBs.
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 switching events |
| Breakdown Voltage (VBR) | 22.8–25.2 V at 1 mA - defines precise turn-on threshold for reliable overvoltage triggering |
| Stand-off Voltage (VWM) | 20.5 V - ensures no leakage conduction during normal 12 V/24 V system operation |
| Clamping Voltage (VC) | 33.2 V at 45.2 A - limits downstream voltage stress to safe levels for protected ICs and MOSFETs |
| Junction Temperature Range | −65 °C to +185 °C - supports under-hood deployment in engine control modules and battery management systems |
| Package | TO-277A (SMPC) - ultra-low-profile surface-mount package (1.1 mm height) compatible with automated SMT assembly |
| AEC-Q101 Qualified | Yes - certified for automotive electronic components per stress test requirements including HTGB, HTRB, and temperature cycling |
Pinout & Package
TPC24AHM3_A/H uses the TO-277A (SMPC) package: a 3-terminal, single-anode/two-cathode configuration with cathode terminals electrically tied internally. The package measures 4.80 × 3.70 × 1.10 mm and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | DC input reference node | Connected to protected line's positive rail; determines unidirectional conduction direction |
| Cathode (Pin 2) | Common cathode connection | Internally bonded to Pin 3; forms low-inductance path to ground or return plane during clamping |
| Cathode (Pin 3) | Common cathode connection | Electrically identical to Pin 2; dual-cathode layout improves current sharing and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR over lifetime and temperature, critical for automotive field reliability |
| Low profile height | 1.1 mm typical - enables placement beneath connectors or in tight engine-control module housings |
| MSL Level 1 rating | No floor life limitation - eliminates bake requirements prior to reflow, reducing manufacturing cost and risk |
| Halogen-free & RoHS-compliant | HM3 suffix denotes compliance with environmental regulations and JESD201 Class 2 whisker resistance |
| Fast response time | <1 ns - clamps transients before sensitive downstream circuitry experiences damaging overvoltage |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Gate Driver Protection |
|---|---|
Use Scenario: Protecting microcontroller I/O and CAN transceiver power rails from load-dump spikes and alternator ripple in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply and local LDO input to clamp surges above 20.5 V. Use Value: Prevents latch-up or permanent damage to 3.3 V logic ICs during ISO 7637-2 Pulse 5a events with peak energy up to 1500 W. |
Use Scenario: Shielding high-side and low-side gate drivers from inductive kickback when driving BLDC motors in factory automation inverters. IC Role / Device Role / Timing Role: Mounted across driver supply pins to clamp voltage overshoot during MOSFET turn-off transitions. Use Value: Limits gate-source voltage excursion to ≤33.2 V, preserving driver IC integrity and preventing unintended FET turn-on. |
| Telecom Base Station Power Supply | Automotive Battery Management System (BMS) |
Use Scenario: Safeguarding PMICs and ADC front-ends in 48 V telecom rectifier modules exposed to lightning-induced surges on AC input lines. IC Role / Device Role / Timing Role: Secondary-level TVS on DC output bus after primary MOV/clamp stage to handle residual fast-rising transients. Use Value: Provides sub-1 ns response and 33.2 V clamping to protect precision voltage references and isolated feedback circuits. |
Use Scenario: Protecting cell monitor ICs and isolation amplifiers in high-voltage BMS stacks against coupling noise from contactor switching and pack-level fault currents. IC Role / Device Role / Timing Role: Installed on analog sensor supply lines (e.g., thermistor, voltage sense) to suppress common-mode transients. Use Value: Maintains measurement accuracy by limiting transient-induced offset errors and preventing ADC saturation or reset events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Lower PPPM (400 W), higher VC (35.5 V at 11.3 A), SMA package (2.5 mm height) | Suitable for consumer-grade 12 V systems but not automotive under-hood due to lower power rating and non-AEC-Q101 qualification | Select when cost-sensitive designs require basic surge immunity without automotive qualification or high-energy handling |
| TPC22AHM3_A/H | Lower VBR range (20.9–23.1 V), VWM = 18.8 V, VC = 30.6 V at 49.0 A - tighter voltage margin for 12 V nominal rails | Better matched to 12 V systems with tighter supply tolerances; same footprint and AEC-Q101 qualification | Prefer for new 12 V ECU designs requiring lower clamping voltage while retaining mechanical and thermal compatibility |
Compared with SMAJ22A and TPC22AHM3_A/H, the TPC24AHM3_A/H offers higher energy handling (1500 W vs. 400 W or 1500 W), a 20.5 V stand-off better aligned with 24 V systems, and identical AEC-Q101 qualification-making it optimal for 24 V commercial vehicle ECUs and high-power industrial drives.
Availability
TPC24AHM3_A/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, telecom power supplies, and battery management systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for TPC24AHM3_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 harsh automotive and industrial environments, combining AEC-Q101 qualification, high-temperature capability, and ultra-low-profile packaging for next-generation power electronics.
FAQ
What is the maximum clamping voltage of the TPC24AHM3_A/H under standard test conditions?
The TPC24AHM3_A/H has a maximum clamping voltage (VC) of 33.2 V when subjected to a 10/1000 µs waveform at 45.2 A peak pulse current. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream 3.3 V or 5 V ICs in automotive and industrial applications. The TPC24AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the TPC24AHM3_A/H suitable for use in automotive under-hood applications?
Yes, the TPC24AHM3_A/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications such as engine control units and transmission control modules. Its TO-277A package, halogen-free construction, and MSL Level 1 rating further support reliability in high-temperature, high-vibration environments. The TPC24AHM3_A/H meets all required stress tests including HTGB and temperature cycling.
What does the "HM3_A/H" suffix indicate in TPC24AHM3_A/H?
The "HM3" suffix denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified TO-277A package variant, with "A" indicating the revision code and "H" specifying the preferred packaging format: 7-inch plastic tape and reel with 1500 units per reel. This suffix confirms compliance with JESD201 Class 2 whisker resistance and J-STD-002 solderability standards. The TPC24AHM3_A/H is fully traceable and intended for high-reliability production use.
How does the TPC24AHM3_A/H compare to bidirectional TVS diodes in terms of circuit protection?
The TPC24AHM3_A/H is unidirectional and designed for DC-biased applications where reverse conduction must be blocked-such as 12 V or 24 V power rails. Unlike bidirectional TVS devices, it avoids leakage during normal negative excursions and provides lower clamping voltage in the forward direction. This makes the TPC24AHM3_A/H preferable for protecting MOSFET gates, LDO inputs, and sensor power supplies where polarity is fixed and surge direction is known.
Can the TPC24AHM3_A/H be used in parallel to increase surge current handling?
No, the TPC24AHM3_A/H is not recommended for parallel operation due to inherent VBR tolerance (±5 %) and thermal coupling limitations in the TO-277A package. Uneven current sharing may cause premature failure of one device. For higher surge ratings, select a higher-power TVS like TPC30AHM3_A/H or implement staged protection with upstream fusing. The TPC24AHM3_A/H is engineered for standalone 1500 W transient suppression per device.
TPC24AHM3_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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- 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)
TPC24AHM3_A/H FAQ
1.How can I place an order for TPC24AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC24AHM3_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 TPC24AHM3_A/H reliable?
The price and inventory of TPC24AHM3_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 TPC24AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPC24AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC24AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC24AHM3_A/H?
TPC24AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC24AHM3_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 TPC24AHM3_A/H?
For technical support, including TPC24AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC24AHM3_A/H requirements.
6.How does Aetrix verify that TPC24AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC24AHM3_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 TPC24AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPC24AHM3_A/H?
All TPC24AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC24AHM3_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 TPC24AHM3_A/H part is unused and in its original packaging.
Return procedure for TPC24AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC24AHM3_A/H Tags
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