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Vishay General Semiconductor - Diodes Division TPC24CAHM3/H
- Part No.:
- TPC24CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC24CAHM3/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:8,150
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Product details
Overview
TPC24CAHM3/H from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in the SMPC (TO-277A) package, designed for high-reliability automotive and industrial electronics protection. It features a breakdown voltage of 22.8 V to 25.2 V, clamping voltage of 33.2 V at 45.2 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC24CAHM3/H datasheet, TPC24CAHM3/H pinout, TPC24CAHM3/H application, or TPC24CAHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, 1.1 mm profile for space-constrained PCBs, low leakage (<1 μA at 20.5 V), and suitability for protecting sensor signal lines, MOSFET gates, and microcontroller I/O against inductive switching transients.
Technical Context
The TPC24CAHM3/H implements a junction-passivated PAR® structure optimized for fast response to 10/1000 μs surge waveforms while maintaining stable clamping performance across -65 °C to +185 °C operating range. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Designed for automated SMT placement, the device meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow compatibility with 260 °C peak temperature. The SMPC package provides robust thermal dissipation and mechanical reliability under automotive vibration and thermal cycling stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V - Ensures reliable conduction onset above system nominal voltage while avoiding false triggering during normal operation |
| VWM | 20.5 V - Maximum continuous reverse working voltage compatible with 24 V automotive supply rails |
| IPPM | 45.2 A - Peak surge current handling capability under standardized 10/1000 μs waveform |
| VC | 33.2 V - Clamped voltage during full-rated surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak pulse power rating defining transient energy absorption capacity |
| TJ max | +185 °C - Enables use in under-hood automotive environments without derating |
| ID @ VWM | <1 μA - Minimal leakage preserves signal integrity and battery life in always-on circuits |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H), with matte tin-plated terminals solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Identical terminal behavior - no polarity marking required; interchangeable in circuit layout |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically symmetric to Terminal 1; forms low-inductance clamp path across protected line |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation PAR® design | Enables stable VBR and low leakage over lifetime, even under high-temperature bias stress |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| 1.1 mm typical height | Reduces board profile for compact ECUs and ADAS modules where Z-axis space is constrained |
| MSL Level 1 rating | Allows single-reflow assembly without dry-pack or baking, simplifying manufacturing flow |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage exposure to protected devices compared to higher-ratio TVS diodes |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt transients before reaching MCU ADC or UART pins. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs by limiting transient voltage to ≤33.2 V during 45.2 A surges. | Use Scenario: Safeguarding digital input/output lines of PLC modules connected to solenoids, relays, and contactors. IC Role / Device Role / Timing Role: Standoff protection element mounted adjacent to optocoupler or level-shifter inputs to absorb switching-induced spikes. Use Value: Maintains functional safety integrity by ensuring logic-level signals remain within valid thresholds despite 1500 W transient events. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Shielding USB-C PD controller communication lines and VBUS monitoring circuits from ESD and hot-swap transients. IC Role / Device Role / Timing Role: Low-capacitance TVS placed inline with CC1/CC2 and VCONN traces to suppress sub-100 ns ESD pulses. Use Value: Preserves signal fidelity with <1 μA leakage at 20.5 V, enabling accurate voltage sensing without measurement drift. | Use Scenario: Front-end protection for Ethernet PHY interfaces and analog front ends in base station remote radio units. IC Role / Device Role / Timing Role: Primary surge arrestor on differential pair lines, coordinated with secondary GDT or MOV stages. Use Value: Delivers repeatable 33.2 V clamping performance across 1000+ surge cycles, meeting ITU-T K.21 basic protection requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-HF | Unidirectional; 24 V VWM; 38.9 V VC at 38.6 A; SMA package (higher profile, lower PPPM) | Requires external polarity management; unsuitable for AC or differential lines without additional components | Select when unidirectional protection suffices and board height >2.0 mm is acceptable |
| TPC22CAHM3/H | Lower VBR (20.9–23.1 V); 30.6 V VC at 49.0 A; identical SMPC package and AEC-Q101 qualification | Better suited for 12 V systems or tighter clamping margin requirements | Choose for 12 V automotive subsystems where lower clamping voltage improves system robustness |
Compared with SMAJ24A-HF and TPC22CAHM3/H, the TPC24CAHM3/H offers optimal balance of 24 V system compatibility, bidirectional flexibility, and ultra-low profile-making it preferred for next-generation compact automotive ECUs requiring zero-polarity-layout design freedom.
Availability
TPC24CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial motor controllers, and telecom line cards requiring stable component supply with AEC-Q101 assurance and long-term production continuity.
Supply support for TPC24CAHM3/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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The TPCxxCA series belongs to Vishay's PAR® TVS platform, engineered specifically for high-energy transient suppression in space-constrained, thermally aggressive environments such as automotive powertrain and ADAS systems.
FAQ
What is the maximum operating temperature for TPC24CAHM3/H?
The TPC24CAHM3/H has a maximum junction temperature of +185 °C, validated per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive locations and high-ambient industrial enclosures without thermal derating up to that limit. The device maintains specified VBR, VC, and leakage performance across its full -65 °C to +185 °C operating range.
Is TPC24CAHM3/H compatible with lead-free reflow processes?
Yes, TPC24CAHM3/H is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated terminals comply with J-STD-002 solderability standards, and the halogen-free molding compound ensures compatibility with standard lead-free solder pastes and profiles used in automotive and industrial SMT lines.
Does TPC24CAHM3/H require polarity-aware PCB layout?
No - TPC24CAHM3/H is a fully bidirectional TVS diode with symmetrical terminal behavior. There is no anode/cathode marking on the SMPC package, and either terminal may be connected to the line or ground side of the protected circuit. This eliminates orientation errors during automated placement and simplifies layout for differential or AC-coupled signal paths.
How does TPC24CAHM3/H compare to standard SMAJ-series TVS diodes?
TPC24CAHM3/H delivers 1500 W peak power in a 4.8 × 3.7 mm SMPC package with 1.1 mm height, versus SMAJ24A's 5.3 × 4.1 mm SMA package and 2.3 mm height. It also features lower clamping voltage (33.2 V vs. 38.9 V), AEC-Q101 qualification, and bidirectional operation - making TPC24CAHM3/H superior for space-limited, automotive-grade designs where reliability and layout simplicity are critical.
What is the meaning of the "HM3" suffix in TPC24CAHM3/H?
The "HM3" suffix in TPC24CAHM3/H indicates halogen-free construction, RoHS compliance, AEC-Q101 qualification, and JESD201 Class 2 whisker resistance. The "/H" denotes packaging in 7-inch plastic tape and reel (1500 units per reel), optimized for high-speed pick-and-place assembly. This suffix confirms full automotive-grade material and process compliance for TPC24CAHM3/H.
TPC24CAHM3/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:
- -
- 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/H FAQ
1.How can I place an order for TPC24CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC24CAHM3/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 TPC24CAHM3/H reliable?
The price and inventory of TPC24CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC24CAHM3/H is usually 5 days.
3.What payment methods are accepted for TPC24CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC24CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC24CAHM3/H?
TPC24CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC24CAHM3/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 TPC24CAHM3/H?
For technical support, including TPC24CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC24CAHM3/H requirements.
6.How does Aetrix verify that TPC24CAHM3/H is sourced from the original manufacturer or authorized distributors?
All TPC24CAHM3/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 TPC24CAHM3/H meets industry standards.
7.What is the process for return or replacement of TPC24CAHM3/H?
All TPC24CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC24CAHM3/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 TPC24CAHM3/H part is unused and in its original packaging.
Return procedure for TPC24CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC24CAHM3/H Tags
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