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Vishay General Semiconductor - Diodes Division TPC9.1AHM3/87A
- Part No.:
- TPC9.1AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC9.1AHM3/87A.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:3,946
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Product details
Overview
TPC9.1AHM3/87A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for clamping inductive switching transients on signal lines and power rails. It features a breakdown voltage of 8.65–9.55 V at 1.0 mA, clamps to ≤13.4 V at 112 A peak pulse current, and operates from −65 °C to +185 °C with AEC-Q101 qualification for automotive use.
For engineers reviewing the TPC9.1AHM3/87A datasheet, TPC9.1AHM3/87A pinout, TPC9.1AHM3/87A application, or TPC9.1AHM3/87A equivalent, key selection criteria include its 7.78 V standoff voltage, 112 A peak pulse current rating, low-profile 1.1 mm height, unidirectional polarity, and MSL Level 1 moisture sensitivity compliance.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver fast response time and low incremental surge resistance. Its junction temperature rating of 185 °C enables deployment in under-hood automotive environments and high-reliability industrial control systems where thermal derating is critical.
The device is optimized for 10/1000 μs waveform surge protection per ANSI/IEEE C62.35, with clamping voltage tightly specified at 13.4 V under 112 A peak current. Its SMPC (TO-277A) package supports automated placement and meets UL 94 V-0 flammability requirements.
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 kick scenarios |
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA - ensures reliable triggering above normal operating voltage while avoiding false clamping |
| Standoff Voltage VWM | 7.78 V - compatible with 5 V or 8 V logic/sensor supply rails without leakage-induced power loss |
| Clamping Voltage VC | ≤13.4 V at 112 A - protects downstream ICs (e.g., MCU I/O, CAN transceivers) by limiting voltage stress during surge events |
| Operating Temperature Range | −65 °C to +185 °C - qualified for engine bay, transmission control, and industrial motor drive applications |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Moisture Sensitivity Level | MSL Level 1 - no bake requirement before reflow, enabling direct SMT assembly without handling constraints |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, 3-terminal configuration with cathode band marking. Dimensions: 4.80 × 4.40 × 1.10 mm (L × W × H), matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 3) | Current entry point during reverse-biased clamping | Connected to protected line (e.g., sensor output); conducts surge current into ground path when VPP exceeds VBR |
| Cathode 1 (Terminal 1) | Primary cathode connection | Common cathode node tied to system ground or low-impedance return path; shares internal die connection with Cathode 2 |
| Cathode 2 (Terminal 2) | Secondary cathode connection | Redundant cathode terminal enhancing current sharing and thermal dissipation; improves robustness under high IPPM conditions |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure reduces leakage drift over temperature and lifetime, maintaining VWM stability |
| Low profile (1.1 mm height) | Enables PCB space savings in compact modules such as ADAS camera ECUs and battery management sensors |
| Very fast response time | Sub-nanosecond turn-on limits voltage overshoot during ESD or lightning-induced transients on data lines |
| Halogen-free & RoHS-compliant | Meets global environmental regulations without compromising surge performance or thermal robustness |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, ensuring long-term reliability in automotive under-hood applications |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches precision ADC inputs or op-amp buffers. Use Value: Prevents sensor signal corruption and ADC saturation during 12 V/24 V system surges, maintaining closed-loop control integrity. |
Use Scenario: Safeguarding digital I/O and encoder feedback lines in variable-frequency drives subjected to back-EMF spikes from inductive motor windings. IC Role / Device Role / Timing Role: Fast-clamping TVS placed at connector interface to shunt inductive kick energy away from FPGA or microcontroller GPIOs. Use Value: Eliminates need for external RC snubbers on encoder channels, reducing BOM count and board area while meeting IEC 61800-3 EMC immunity. |
| Automotive Body Control Module | Telecom Power Interface |
Use Scenario: Shielding LIN bus transceiver pins and LED driver outputs in door module ECUs against ESD and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing ±8 kV contact ESD per IEC 61000-4-2 without latch-up or parametric shift. Use Value: Maintains LIN communication continuity after repeated ESD strikes, avoiding intermittent bus faults in production vehicles. |
Use Scenario: Protecting 48 V DC power input of PoE-powered telecom equipment from induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC-DC converter, clamping transients before bulk capacitance. Use Value: Enables single-stage protection design with 1500 W capability, reducing component count versus multi-stage TVS+MOV solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Lower PPPM (400 W), SMA package (higher thermal resistance), VBR = 10.0–11.1 V, VC = 15.4 V at 25.9 A | Not AEC-Q101 qualified; limited to consumer/industrial use; insufficient for automotive load-dump duty cycles | Select only for cost-sensitive non-automotive designs with lower surge exposure and relaxed thermal constraints. |
| TPC9.1AHM3_A | Same electrical specs and SMPC package; differs only in tape-and-reel packaging code (A vs. 87A) and revision marking | No functional difference; identical performance, qualification, and mounting footprint | Preferred for new designs requiring latest revision traceability; both share full interchangeability in circuit and layout. |
Compared with SMAJ9.0A, TPC9.1AHM3/87A delivers 275 % higher surge power handling and automotive qualification, while TPC9.1AHM3_A offers identical protection with updated manufacturing traceability-making the /87A variant optimal for legacy BOM continuity and dual-sourcing flexibility.
Availability
TPC9.1AHM3/87A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive I/O safeguarding, and telecom power interface surge suppression requiring stable component supply across extended product lifecycles.
Supply support for TPC9.1AHM3/87A 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, and protection devices for demanding environments.
The TPC9.1AHM3/87A belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for automotive-grade transient suppression in harsh thermal and electrical conditions.
FAQ
What is the standoff voltage of the TPC9.1AHM3/87A?
The TPC9.1AHM3/87A has a maximum standoff voltage (VWM) of 7.78 V at 25 °C. This value ensures compatibility with 5 V and 8 V nominal supply rails while preventing conduction during normal operation. The device remains in high-impedance state until transient voltage exceeds its breakdown threshold of 8.65–9.55 V, making TPC9.1AHM3/87A suitable for precise overvoltage protection in sensitive analog and digital circuits.
Is the TPC9.1AHM3/87A AEC-Q101 qualified?
Yes, the TPC9.1AHM3/87A is fully AEC-Q101 qualified. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias (HTRB), and ESD-to meet automotive reliability standards. This qualification confirms its suitability for under-hood and chassis-mounted applications where long-term stability and failure-free operation are mandatory, distinguishing TPC9.1AHM3/87A from industrial-grade alternatives.
What package type does the TPC9.1AHM3/87A use?
The TPC9.1AHM3/87A uses the SMPC (TO-277A) surface-mount package, measuring 4.80 × 4.40 × 1.10 mm with three terminals: Anode (Terminal 3) and dual Cathodes (Terminals 1 and 2). Its low profile and matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance, making TPC9.1AHM3/87A ideal for automated assembly in high-volume automotive production.
How does the clamping voltage of the TPC9.1AHM3/87A compare to similar TVS diodes?
The TPC9.1AHM3/87A clamps to a maximum of 13.4 V at 112 A peak pulse current (10/1000 μs waveform), significantly lower than many 9 V-class TVS devices. For example, SMAJ9.0A clamps at 15.4 V under only 25.9 A. This tighter clamping margin ensures downstream components like CAN transceivers or MCU I/O pins remain within absolute maximum ratings during surge events, directly enhancing system-level robustness of TPC9.1AHM3/87A-based designs.
Can the TPC9.1AHM3/87A replace older TPC9.1A variants in existing designs?
Yes, the TPC9.1AHM3/87A is a direct replacement for earlier TPC9.1A variants using HM3 packaging, including TPC9.1AHM3_A. Electrical specifications, thermal performance, and mechanical footprint are identical; only the revision marking and tape-and-reel packaging code differ. No PCB layout or schematic changes are required when migrating to TPC9.1AHM3/87A, preserving design integrity while ensuring access to current manufacturing lots and lifecycle support.
TPC9.1AHM3/87A 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:
- Obsolete
- 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)
TPC9.1AHM3/87A FAQ
1.How can I place an order for TPC9.1AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC9.1AHM3/87A 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 TPC9.1AHM3/87A reliable?
The price and inventory of TPC9.1AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC9.1AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC9.1AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC9.1AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC9.1AHM3/87A?
TPC9.1AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC9.1AHM3/87A 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 TPC9.1AHM3/87A?
For technical support, including TPC9.1AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC9.1AHM3/87A requirements.
6.How does Aetrix verify that TPC9.1AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC9.1AHM3/87A 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 TPC9.1AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC9.1AHM3/87A?
All TPC9.1AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC9.1AHM3/87A, 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 TPC9.1AHM3/87A part is unused and in its original packaging.
Return procedure for TPC9.1AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC9.1AHM3/87A Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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