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Vishay General Semiconductor - Diodes Division TPC12CAHM3/I
- Part No.:
- TPC12CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC12CAHM3/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:6,765
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Product details
Overview
TPC12CAHM3/I from Vishay General Semiconductor is a bidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for clamping voltage transients on signal and power lines. It features a standoff voltage of 10.2 V, breakdown voltage range of 11.4–12.6 V at 1 mA, maximum clamping voltage of 16.7 V at 89.8 A, and operates from –65 °C to +185 °C. It is AEC-Q101 qualified and used for automotive sensor line protection.
For engineers reviewing the TPC12CAHM3/I datasheet, TPC12CAHM3/I pinout, TPC12CAHM3/I application, or TPC12CAHM3/I equivalent, key selection criteria include its 1500 W peak pulse power rating, bidirectional polarity, low-profile 1.1 mm height, halogen-free RoHS-compliant construction, and JESD201 Class 2 whisker resistance - all critical for high-reliability automotive and industrial PCB designs.
Technical Context
The TPC12CAHM3/I implements a junction-passivated PAR® structure optimized for fast response to ESD and surge events, with clamping action triggered within nanoseconds of overvoltage onset. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Rated for 10/1000 μs waveform surges, it delivers 89.8 A peak pulse current while maintaining ≤16.7 V clamping voltage, enabling robust protection of downstream MOSFETs and ICs. The device's TJ = 185 °C rating supports operation in under-hood automotive environments and high-power industrial enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10.2 V - Maximum continuous reverse working voltage before leakage exceeds 2 μA; sets upper limit for normal operating bias. |
| VBR (min/max) | 11.4 V / 12.6 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on during transients ≥11.4 V. |
| VC @ IPPM | 16.7 V at 89.8 A - Clamped voltage during 1500 W surge; defines worst-case stress on protected circuitry. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 μs waveform; determines survivability against ISO 7637-2 Pulse 1/2a/5a events. |
| TJ max | +185 °C - Maximum junction temperature; enables use in high-ambient automotive engine control units. |
| Package | SMPC (TO-277A) - Surface-mount, 2-terminal, no-marking bidirectional case; compatible with automated SMT placement and reflow up to 260 °C. |
Pinout & Package
TPC12CAHM3/I uses a 2-terminal SMPC (TO-277A) package with no polarity marking. Both terminals are electrically identical and interchangeable due to bidirectional design. The package has a low profile (1.1 mm typical height), matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal may connect to protected line or ground; symmetric conduction eliminates orientation dependency during layout. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired with Terminal 1 to form clamping path; no internal asymmetry - both pins function identically in surge conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation PAR® design | Reduces leakage drift and improves long-term stability under thermal cycling, critical for 15+ year automotive service life. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing - required for ECUs and ADAS modules. |
| MSL Level 1 rating | Enables direct placement into standard SMT reflow profiles without dry-pack or baking, reducing manufacturing overhead. |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates (e.g., EU RoHS, China RoHS, JEITA EG02) for export and OEM acceptance. |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal/humidity stress, eliminating latent short-circuit risk in sealed connectors or enclosures. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed directly at connector interface to shunt transients before reaching signal conditioning ICs. Use Value: Limits voltage to ≤16.7 V during 89.8 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V automotive microcontrollers and ADC front-ends. | Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced surges from solenoid valves and motor contactors. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC I/O terminals, mounted adjacent to connector to minimize inductance. Use Value: Withstands repeated 1500 W transients per IEC 61000-4-5 Level 3 (2 kV/12 Ω), ensuring uptime in factory automation environments. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side transient suppression on USB-C PD and AC/DC adapter outputs exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-clamping TVS across VBUS/GND to clamp ESD and overshoot during plug insertion or fault recovery. Use Value: Sub-10 ns response time and 2 μA leakage at 10.2 V preserve efficiency and prevent false triggering in always-on power delivery circuits. | Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from lightning-induced surges entering via RJ-45 jacks in residential gateways and base stations. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line pair) placed before magnetics to absorb common-mode energy before transformer saturation. Use Value: 185 °C junction rating allows operation inside thermally constrained telecom chassis without derating, supporting extended MTBF targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/57T | Unidirectional; 12 V VWM; 1500 W PPPM; DO-214AC package; higher VC = 19.9 V at same IPPM | Requires correct polarity orientation; less suitable for AC or differential lines without external diode pairing. | Select when unidirectional clamping suffices and board space permits larger DO-214AC footprint. |
| TPC12CAHM3/H | Identical electrical specs; differs only in packaging - 7" tape/reel (1500 pcs) vs. 13" tape/reel (6500 pcs) for TPC12CAHM3/I | No functional difference; choice driven by production volume and SMT feeder compatibility. | Choose TPC12CAHM3/H for prototyping or low-volume builds; TPC12CAHM3/I for high-volume automated assembly. |
Compared with SMAJ12A-E3/57T and TPC12CAHM3/H, the TPC12CAHM3/I offers bidirectional symmetry in a lower-profile SMPC package with tighter clamping (16.7 V vs. 19.9 V), making it preferable for space-constrained automotive and industrial signal-line protection where polarity-agnostic layout is required.
Availability
TPC12CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line drivers requiring stable component supply, AEC-Q101 compliance, and high-temperature operational resilience.
Supply support for TPC12CAHM3/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 TPC12CAHM3/I belongs to Vishay's eSMP® PAR® TVS family, engineered specifically for high-power, high-temperature transient suppression in automotive and industrial systems where AEC-Q101 qualification and compact surface-mount form factor are mandatory.
FAQ
What is the maximum clamping voltage of the TPC12CAHM3/I under rated surge conditions?
The TPC12CAHM3/I clamps to a maximum of 16.7 V when subjected to its rated 89.8 A peak pulse current (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The low clamping ratio (VC/VBR ≈ 1.4) reflects efficient energy diversion without overstressing downstream components like microcontrollers or transceivers.
Is the TPC12CAHM3/I suitable for automotive applications?
Yes, the TPC12CAHM3/I is AEC-Q101 qualified and rated for operation from –65 °C to +185 °C, making it suitable for under-hood and body-control module applications. Its halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance further align with automotive OEM requirements. The TPC12CAHM3/I is explicitly designated for automotive use via the HM3 suffix in its ordering code.
Does the TPC12CAHM3/I require specific PCB layout considerations?
Yes - to preserve its 1500 W surge capability, the TPC12CAHM3/I must be placed as close as possible to the protected interface (e.g., connector or IC pin), with short, wide traces to minimize inductance. The recommended mounting pad layout per JEDEC TO-277A should be followed precisely; thermal relief on pads is discouraged to maintain surge current path integrity and heat dissipation during repetitive events.
What does the "HM3" suffix in TPC12CAHM3/I signify?
The "HM3" suffix in TPC12CAHM3/I indicates halogen-free, RoHS-compliant construction, AEC-Q101 qualification, and compliance with JESD201 Class 2 whisker testing. The "I" denotes 13-inch tape-and-reel packaging (6500 units per reel), distinguishing it from the "H" variant (7-inch reel, 1500 units). All TPCxxCAHM3 variants share identical electrical and thermal specifications.
How does the bidirectional nature of the TPC12CAHM3/I affect circuit design?
The bidirectional nature of the TPC12CAHM3/I eliminates polarity sensitivity, allowing either terminal to connect to signal or ground without risk of reverse-bias failure. This simplifies layout for AC-coupled lines (e.g., CAN, LIN, RS-485) and reduces BOM count versus using two unidirectional devices. No orientation marking is present on the SMPC package, confirming symmetrical internal structure - verified in Vishay Document 87649.
TPC12CAHM3/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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- 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)
TPC12CAHM3/I FAQ
1.How can I place an order for TPC12CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC12CAHM3/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 TPC12CAHM3/I reliable?
The price and inventory of TPC12CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC12CAHM3/I is usually 5 days.
3.What payment methods are accepted for TPC12CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC12CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC12CAHM3/I?
TPC12CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC12CAHM3/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 TPC12CAHM3/I?
For technical support, including TPC12CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC12CAHM3/I requirements.
6.How does Aetrix verify that TPC12CAHM3/I is sourced from the original manufacturer or authorized distributors?
All TPC12CAHM3/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 TPC12CAHM3/I meets industry standards.
7.What is the process for return or replacement of TPC12CAHM3/I?
All TPC12CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC12CAHM3/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 TPC12CAHM3/I part is unused and in its original packaging.
Return procedure for TPC12CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC12CAHM3/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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