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Vishay General Semiconductor - Diodes Division TPC24CAHM3/I
- Part No.:
- TPC24CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC24CAHM3/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:9,634
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Product details
Overview
TPC24CAHM3/I from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in the SMPC (TO-277A) surface-mount package, designed for high-reliability automotive and industrial electronics protection. It features a breakdown voltage of 22.8–25.2 V at 1 mA, clamping voltage of 33.2 V at 45.2 A, 185 °C maximum junction temperature, and AEC-Q101 qualification.
For engineers reviewing the TPC24CAHM3/I datasheet, TPC24CAHM3/I pinout, TPC24CAHM3/I application, or TPC24CAHM3/I equivalent, key selection criteria include its 20.5 V standoff voltage, low-profile 1.1 mm height, bidirectional surge suppression capability, and halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance.
Technical Context
The TPC24CAHM3/I implements a junction-passivated PAR® design optimized for fast response to transient overvoltages, with clamping performance defined under standardized 10/1000 μs waveform conditions. Its bidirectional architecture enables symmetric protection on signal or power lines without polarity constraints.
Rated for operation from –65 °C to +185 °C, it supports automotive-grade thermal cycling and meets MSL Level 1 per J-STD-020 with 260 °C peak reflow tolerance. The device delivers 1500 W peak pulse power dissipation while maintaining ≤1.0 μA reverse leakage at 20.5 V standoff.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous reverse working voltage before significant leakage begins |
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - Confirmed breakdown threshold range for reliable triggering |
| VC @ IPPM | 33.2 V at 45.2 A - Clamped voltage during 1500 W transient event, limiting downstream stress |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform, enabling robust surge immunity |
| TJ max | +185 °C - Enables use in under-hood automotive environments and high-power industrial enclosures |
| Leakage ID | ≤1.0 μA at VWM - Minimizes standby power loss and avoids false triggering in low-current circuits |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, 2-terminal, bidirectional configuration with no polarity marking. Dimensions conform to JEDEC TO-277A standard; typical height is 1.1 mm, footprint is 3.70 mm × 2.20 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as input/output path; symmetrical conduction eliminates orientation dependency during PCB layout |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired with Terminal 1 to form a single transient shunt path across protected line; no internal polarity distinction |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation PAR® design | Reduces parameter drift and improves long-term stability under repeated surge stress |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without dry-pack or baking requirements |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates for automotive and industrial OEM supply chains |
| 1.1 mm profile | Supports ultra-thin PCB designs and space-constrained modules such as camera ECUs and battery management units |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN/LIN bus power inputs against load dump and jump-start transients in body control modules. IC Role / Device Role / Timing Role: Primary shunt TVS placed directly at connector entry point to clamp surges before reaching LDOs and microcontrollers. Use Value: Withstands 1500 W pulses and operates up to +185 °C, ensuring reliability in under-hood environments where ambient exceeds 125 °C. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential or single-ended analog signal pairs to prevent ADC saturation or op-amp damage. Use Value: Low 1.0 μA leakage at 20.5 V avoids loading precision sensor bridges; 33.2 V clamping preserves signal integrity within ±10% error margin. |
| Consumer USB-C Port ESD/Surge Protection | Telecom Base Station DC Power Input |
Use Scenario: Secondary-level surge suppression on VBUS lines of USB-C receptacles in portable docking stations subjected to hot-plug and cable-induced spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary ESD array to absorb higher-energy events beyond IEC 61000-4-2 limits. Use Value: 20.5 V VWM allows compatibility with 20 V PD3.0 operation; 1.1 mm height fits tight board-to-connector spacing. | Use Scenario: Front-end protection of 48 V DC input in remote radio units (RRUs) against lightning-induced surges on outdoor power feeds. IC Role / Device Role / Timing Role: First-stage crowbar device in multi-tiered protection scheme, diverting bulk energy before downstream MOVs and GDTs. Use Value: 1500 W PPPM rating handles 10/1000 μs lightning surges per IEC 61000-4-5; AEC-Q101 qualification ensures process consistency for telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/57T | Unidirectional; 24 V VWM; 38.9 V VC @ 38.8 A; SMA package (higher profile, lower PPPM = 400 W) | Requires correct polarity orientation; unsuitable for AC-coupled or bidirectional signal lines | Select when unidirectional protection suffices and board height budget allows ≥2.2 mm profile |
| TPC24CAHM3/H | Identical electrical specs; same SMPC package; differs only in tape/reel size (1500 pcs vs. 6500 pcs) and delivery mode (7″ vs. 13″ reel) | No functional or application difference; purely logistics variant | Choose based on production volume and SMT line feeder compatibility |
Compared with SMAJ24A-E3/57T, TPC24CAHM3/I offers bidirectional operation, 3.75× higher peak power, and 55% lower clamping voltage-critical for protecting sensitive 24 V logic. Versus TPC24CAHM3/H, only packaging and quantity differ; both share identical surge performance, thermal rating, and AEC-Q101 qualification.
Availability
TPC24CAHM3/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC input protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPC24CAHM3/I 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The TPC24CAHM3/I belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for automotive-grade transient suppression in harsh thermal and electrical environments.
FAQ
What is the maximum clamping voltage of the TPC24CAHM3/I under rated surge conditions?
The TPC24CAHM3/I has a maximum clamping voltage (VC) of 33.2 V when subjected to its peak pulse current (IPPM) of 45.2 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable voltage limiting during transient events. The TPC24CAHM3/I maintains this clamping performance across its full operating temperature range, making it suitable for demanding automotive and industrial applications.
Is the TPC24CAHM3/I suitable for automotive applications?
Yes, the TPC24CAHM3/I is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, meeting critical requirements for under-hood and chassis-mounted automotive electronics. Its halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance further support compliance with automotive manufacturing standards. The TPC24CAHM3/I is explicitly designated for automotive use via its HM3 suffix and base P/N structure.
What does the "HM3" suffix indicate in TPC24CAHM3/I?
The "HM3" suffix in TPC24CAHM3/I denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified variant in the SMPC (TO-277A) package. It also indicates compliance with JESD201 Class 2 whisker testing and MSL Level 1 moisture sensitivity. The "I" denotes 13-inch tape-and-reel packaging with 6500 units per reel-distinct from "H" (7-inch reel, 1500 units). The TPC24CAHM3/I shares identical electrical and thermal specifications with other HM3 variants.
How does the TPC24CAHM3/I compare to unidirectional TVS diodes like SMAJ24A?
The TPC24CAHM3/I is bidirectional with symmetrical clamping behavior, whereas SMAJ24A is unidirectional and requires correct polarity installation. The TPC24CAHM3/I delivers 1500 W peak pulse power versus 400 W for SMAJ24A, and clamps at 33.2 V versus 38.9 V-providing tighter voltage control. Its SMPC package is also significantly lower profile (1.1 mm vs. ≥2.2 mm), enabling denser layouts. These differences make the TPC24CAHM3/I preferable for AC-coupled, differential, or polarity-agnostic protection schemes.
What is the standoff voltage (VWM) of the TPC24CAHM3/I, and why is it important?
The TPC24CAHM3/I has a maximum standoff voltage (VWM) of 20.5 V, meaning it remains in high-impedance state below this voltage and draws less than 1.0 μA leakage current. This parameter ensures minimal interference with normal circuit operation while providing a clear margin below the 22.8–25.2 V breakdown threshold. For 24 V systems, VWM = 20.5 V allows safe operation during nominal conditions and transient headroom before clamping engages-critical for protecting downstream regulators and microcontrollers in the TPC24CAHM3/I's target applications.
TPC24CAHM3/I 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):
- 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 ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC24CAHM3/I FAQ
1.How can I place an order for TPC24CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC24CAHM3/I 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 TPC24CAHM3/I reliable?
The price and inventory of TPC24CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC24CAHM3/I is usually 5 days.
3.What payment methods are accepted for TPC24CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC24CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC24CAHM3/I?
TPC24CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC24CAHM3/I 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 TPC24CAHM3/I?
For technical support, including TPC24CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC24CAHM3/I requirements.
6.How does Aetrix verify that TPC24CAHM3/I is sourced from the original manufacturer or authorized distributors?
All TPC24CAHM3/I 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 TPC24CAHM3/I meets industry standards.
7.What is the process for return or replacement of TPC24CAHM3/I?
All TPC24CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC24CAHM3/I, 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 TPC24CAHM3/I part is unused and in its original packaging.
Return procedure for TPC24CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC24CAHM3/I Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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