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Vishay General Semiconductor - Diodes Division TPC9.1AHM3_A/H
- Part No.:
- TPC9.1AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC9.1AHM3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:8,766
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Product details
Overview
TPC9.1AHM3_A/H from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, featuring 8.65 V to 9.55 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), and 13.4 V clamping voltage (VC) at 112 A peak pulse current - designed for robust overvoltage protection of MOSFETs and ICs in automotive power circuits.
For engineers reviewing the TPC9.1AHM3_A/H datasheet, TPC9.1AHM3_A/H pinout, TPC9.1AHM3_A/H application, or TPC9.1AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and uni-directional clamping behavior in high-reliability automotive and industrial systems.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation, enabling stable clamping under repetitive surge stress while maintaining low incremental surge resistance (Rdyn) and sub-nanosecond response time. Its unidirectional architecture supports DC-biased signal and power line protection without reverse conduction during normal operation.
The device operates across -65 °C to +185 °C junction temperature range and is rated for 200 A non-repetitive forward surge current (IFSM) with 3.5 V maximum forward voltage at 100 A. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements for automotive-grade PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V - ensures reliable triggering above circuit operating voltage while avoiding false clamping during transients |
| VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 50 μA, compatible with 5 V–7.5 V logic and sensor supply rails |
| VC @ IPPM | 13.4 V at 112 A - limits voltage seen by protected downstream components during 10/1000 μs surge events |
| PPPM | 1500 W - peak pulse power handling capability per 10/1000 μs waveform, sufficient for ISO 7637-2 Pulse 1 & 2b suppression |
| TJ max | +185 °C - enables use in under-hood automotive environments and high-power industrial motor drives without thermal derating |
| Package | TO-277A (SMPC) - surface-mount, 3-terminal, low-profile (1.1 mm height) package with matte tin-plated leads compliant to J-STD-002 |
Pinout & Package
TPC9.1AHM3_A/H is housed in a TO-277A (SMPC) package with three terminals: two cathodes (pins 1 and 2) and one anode (pin A). The dual-cathode configuration allows parallel connection of internal junctions to achieve higher surge current handling while maintaining compact footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode) | Primary cathode terminal | Connected internally to one PN junction; used for standard unidirectional clamping path from anode to cathode |
| Pin 2 (Cathode) | Secondary cathode terminal | Connected to second parallel PN junction; enables current sharing and reduces dynamic impedance during high-current surges |
| Pin A (Anode) | Anode terminal | Common anode node; connects to protected line (e.g., 12 V rail or gate drive trace); reverse-biased during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring long-term reliability under thermal cycling and vibration |
| MSL Level 1 (per J-STD-020) | Zero floor life limitation - can be stored indefinitely at ≤30 °C/60 % RH and mounted without baking prior to reflow |
| Dual-cathode TO-277A structure | Reduces effective dynamic impedance by ~30 % vs. single-junction equivalents, improving clamping consistency at >100 A surge levels |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance mandates (e.g., ELV, IMDS) and supports lead-free reflow profiles up to 260 °C |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Gate Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients on 12 V battery-fed ECUs in passenger vehicles per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp spikes up to 35 V within 1 ns. Use Value: Prevents damage to upstream DC-DC controllers and downstream microcontrollers by limiting voltage to ≤13.4 V during 1500 W surges. |
Use Scenario: Protecting high-side N-channel MOSFET gates from Miller-induced voltage overshoot during fast switching in servo drives. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp dv/dt-induced ringing exceeding VGS rating. Use Value: Maintains gate integrity at 100 kHz PWM frequencies by clamping transients to 13.4 V with <1 ns response, avoiding unintended turn-on. |
| Telecom DC Power Input Protection | Automotive Sensor Signal Line Protection |
|
Use Scenario: Safeguarding 48 V telecom power supplies against lightning-induced surges on outdoor cabinet inputs. IC Role / Device Role / Timing Role: Primary TVS stage before DC-DC converter input, absorbing 10/1000 μs surges per IEC 61000-4-5. Use Value: Delivers 1500 W peak power dissipation with 13.4 V clamping to preserve upstream rectifier bridge and bulk capacitor lifetime. |
Use Scenario: Shielding LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from ESD and inductive coupling in chassis modules. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface to shunt ESD pulses before entering IC pins. Use Value: Provides 15 kV contact / 20 kV air ESD immunity (IEC 61000-4-2) with minimal signal distortion due to TO-277A's low parasitic inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Lower PPPM (400 W), SMA package (higher thermal resistance), VC = 14.4 V @ 28.5 A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current motor drive protection | Select when cost-sensitive consumer designs require basic ESD/surge protection below 500 W |
| TPC9.1AHM3_A/I | Identical electrical specs; differs only in packaging - 13" tape-and-reel (6500 pcs) vs. 7" reel (1500 pcs) for TPC9.1AHM3_A/H | No functional or application difference; same PCB layout, thermal performance, and reliability | Choose based on production volume and SMT line feeder compatibility - no design change required |
Compared with SMAJ9.0A, TPC9.1AHM3_A/H delivers 275 % higher surge power handling and automotive-grade thermal robustness; versus TPC9.1AHM3_A/I, it offers identical protection performance with optimized reel size for mid-volume builds.
Availability
TPC9.1AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive gate protection, telecom DC input protection, and automotive sensor signal line protection requiring stable component supply and AEC-Q101 compliance.
Supply support for TPC9.1AHM3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
TPC9.1AHM3_A/H belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for high-energy transient suppression in space-constrained, thermally demanding automotive and industrial power systems.
FAQ
What is the clamping voltage of TPC9.1AHM3_A/H at its rated peak pulse current?
The TPC9.1AHM3_A/H has a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current of 112 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage during surge events. The TPC9.1AHM3_A/H maintains this clamping performance across its full operating temperature range from -65 °C to +185 °C.
Is TPC9.1AHM3_A/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, TPC9.1AHM3_A/H is explicitly AEC-Q101 qualified and listed in Vishay's automotive-grade product portfolio. It meets all stress test requirements including temperature cycling, highly accelerated life testing (HALT), and mechanical shock - making it suitable for under-hood ECUs, body control modules, and ADAS power supplies. The TPC9.1AHM3_A/H also complies with JESD201 Class 2 whisker resistance and MSL Level 1 handling standards.
How does the dual-cathode configuration of TPC9.1AHM3_A/H improve surge performance?
The dual-cathode structure in TPC9.1AHM3_A/H integrates two parallel silicon junctions within a single TO-277A package, reducing effective dynamic impedance by distributing surge current across both paths. This lowers VC variation under high di/dt conditions and improves clamping consistency at currents above 100 A. Unlike single-junction TVS devices, the TPC9.1AHM3_A/H sustains 1500 W peak power without thermal runaway due to balanced current sharing.
What is the maximum operating junction temperature for TPC9.1AHM3_A/H?
The TPC9.1AHM3_A/H is rated for a maximum junction temperature (TJ) of +185 °C, verified per JEDEC JESD22-A103 and supported by its passivated anisotropic rectifier die construction. This rating enables reliable operation in high-ambient environments such as engine compartments or enclosed industrial enclosures without external heatsinking. The TPC9.1AHM3_A/H maintains full electrical specifications up to this limit.
Does TPC9.1AHM3_A/H meet RoHS and halogen-free requirements?
Yes, TPC9.1AHM3_A/H carries the HM3 suffix, indicating full compliance with RoHS Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The molding compound is UL 94 V-0 rated, and terminals feature matte tin plating qualified to J-STD-002 and JESD22-B102. These attributes make the TPC9.1AHM3_A/H acceptable for automotive OEMs requiring strict material declarations (IMDS, ELV).
TPC9.1AHM3_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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 112A
- 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)
TPC9.1AHM3_A/H FAQ
1.How can I place an order for TPC9.1AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC9.1AHM3_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 TPC9.1AHM3_A/H reliable?
The price and inventory of TPC9.1AHM3_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 TPC9.1AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPC9.1AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC9.1AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC9.1AHM3_A/H?
TPC9.1AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC9.1AHM3_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 TPC9.1AHM3_A/H?
For technical support, including TPC9.1AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC9.1AHM3_A/H requirements.
6.How does Aetrix verify that TPC9.1AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPC9.1AHM3_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 TPC9.1AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPC9.1AHM3_A/H?
All TPC9.1AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPC9.1AHM3_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 TPC9.1AHM3_A/H part is unused and in its original packaging.
Return procedure for TPC9.1AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC9.1AHM3_A/H Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
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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