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Vishay General Semiconductor - Diodes Division TPC24AHM3/87A
- Part No.:
- TPC24AHM3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC24AHM3/87A.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,579
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Product details
Overview
TPC24AHM3/87A from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in SMPC (TO-277A) package, designed for high-reliability automotive and industrial circuit protection. It features a breakdown voltage of 22.8–25.2 V at 1.0 mA, 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 TPC24AHM3/87A datasheet, TPC24AHM3/87A pinout, TPC24AHM3/87A application, or TPC24AHM3/87A equivalent, key selection criteria include unidirectional clamping performance, AEC-Q101 qualification, low-profile 1.1 mm height, and compatibility with automated SMT placement on power rails and sensor signal lines.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 µs transients. Its junction temperature rating of 185 °C enables operation in under-hood automotive environments and high-power industrial controls without thermal derating penalties.
The device exhibits fast response time (<1 ns), meets MSL Level 1 per J-STD-020, and maintains clamping integrity across -65 °C to +185 °C operating range. Its unidirectional polarity supports DC-biased rail protection where reverse conduction must be blocked.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V at 1.0 mA - defines precise overvoltage triggering threshold for reliable system-level surge immunity |
| VWM | 20.5 V - maximum continuous working voltage before leakage exceeds 1.0 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 33.2 V at 45.2 A - clamping voltage limits downstream IC stress during 1500 W transient events |
| PPPM | 1500 W - peak pulse power handling capability per 10/1000 µs waveform, suitable for load-dump and inductive switching suppression |
| TJ max. | +185 °C - enables use in high-temperature automotive engine control units and industrial motor drives without external heatsinking |
| Package | SMPC (TO-277A) - surface-mount, 3-terminal, low-profile (1.1 mm typical height) package optimized for automated placement and high-density PCB layouts |
Pinout & Package
Package: SMPC (TO-277A), 3-terminal surface-mount case with cathode band marking. Dimensions conform to JEDEC TO-277A standard: 4.80 × 4.40 × 1.10 mm (L × W × H), matte tin-plated leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Cathode | Connected to protected line (e.g., 24 V rail); conducts during overvoltage to shunt surge energy to ground |
| Terminal 2 | Cathode | Parallel cathode connection - electrically tied to Terminal 1 internally; enables dual-cathode layout flexibility |
| Terminal 3 | Anode | Connected to system ground; completes low-impedance path for transient current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Junction passivation | Stabilizes VBR over lifetime and prevents parameter drift under high-temperature/humidity stress |
| Low profile (1.1 mm height) | Enables use in space-constrained modules such as ADAS camera ECUs and compact motor controllers |
| MSL Level 1 | Zero floor life limitation - can be stored indefinitely at ambient conditions prior to reflow soldering |
| Very fast response time | <1 ns turn-on ensures protection of sensitive MOSFET gates and microcontroller I/O pins before damage occurs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppresses 12 V/24 V load-dump transients and alternator ripple in engine control units and body electronics modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and downstream DC-DC converter input. Use Value: Clamps 33.2 V at 45.2 A to protect 36 V-rated regulators and microcontrollers without derating margin loss. | Use Scenario: Shields analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events in factory automation sensors. IC Role / Device Role / Timing Role: TVS connected between signal line and ground, upstream of op-amp input stage. Use Value: Limits induced voltage to ≤33.2 V during 1500 W surges, preserving ADC accuracy and preventing latch-up in precision front-ends. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Guards PoE-powered equipment inputs against lightning-induced surges on 48 V DC supply lines. IC Role / Device Role / Timing Role: Primary TVS on DC input before isolation transformer or buck controller. Use Value: Handles 1500 W peak power with 185 °C TJ rating, enabling robust operation in sealed telecom enclosures without airflow. | Use Scenario: Protects gate drivers and half-bridge MOSFETs from inductive kickback in washing machine and HVAC blower inverters. IC Role / Device Role / Timing Role: TVS placed across DC bus or motor phase outputs to clamp switching spikes. Use Value: Low incremental surge resistance minimizes clamping overshoot, reducing risk of MOSFET avalanche failure during repeated commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Lower PPPM (400 W), SMA package (higher thermal resistance), VC = 38.9 V at 10.3 A | Not rated for automotive use; lacks AEC-Q101 qualification and 185 °C TJ rating | Acceptable for cost-sensitive consumer applications with lower surge exposure |
| TPC24AHM3/87B | Same electrical specs and package; revision B replaces A per Vishay document 89056, with updated process control | No functional difference; identical footprint, ratings, and qualification status | Drop-in replacement with enhanced manufacturing consistency; check latest Vishay bulletin for change notice |
Compared with SMAJ24A, TPC24AHM3/87A delivers 3.75× higher surge power handling and automotive-grade reliability; compared with TPC24AHM3/87B, it shares identical performance but reflects earlier production revision with full backward compatibility.
Availability
TPC24AHM3/87A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface design, and telecom DC input hardening requiring stable component supply and long-term lifecycle support.
Supply support for TPC24AHM3/87A 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The TPC24AHM3/87A belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for AEC-Q101-compliant automotive and harsh-environment industrial surge protection.
FAQ
What is the clamping voltage of the TPC24AHM3/87A under maximum surge conditions?
The TPC24AHM3/87A has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current of 45.2 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream components see limited overvoltage stress during transient events. The TPC24AHM3/87A maintains this clamping performance across its full operating temperature range.
Is the TPC24AHM3/87A qualified for automotive applications?
Yes, the TPC24AHM3/87A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. It meets MSL Level 1 per J-STD-020 and is constructed with halogen-free, RoHS-compliant materials. The TPC24AHM3/87A is explicitly listed in Vishay's automotive-grade product documentation (Document Number 89056).
What does the HM3/87A suffix indicate in TPC24AHM3/87A?
The HM3/87A suffix denotes the packaging and revision: HM3 specifies the halogen-free, RoHS-compliant SMPC (TO-277A) package with matte tin-plated leads; "87A" identifies the specific reel configuration (7-inch tape and reel, 1500 units per reel) and revision level A per Vishay's internal part numbering system. The TPC24AHM3/87A is fully compatible with standard SMT pick-and-place equipment.
Can the TPC24AHM3/87A be used in bidirectional configurations?
No, the TPC24AHM3/87A is strictly unidirectional and must be installed with correct polarity-cathode toward the protected line, anode to ground. It does not provide reverse-voltage clamping. For bidirectional protection, a separate device such as the SMBJ24CA or a dual-diode array would be required. The TPC24AHM3/87A datasheet explicitly states "Unidirection only" as a core feature.
What is the maximum leakage current of the TPC24AHM3/87A at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 20.5 V and ambient temperature of 25 °C, the TPC24AHM3/87A exhibits a maximum reverse leakage current (IR) of 1.0 µA. At elevated temperature (TJ = 150 °C), leakage increases to 10 µA-still well within safe margins for most 24 V systems. This low leakage ensures minimal power loss and avoids false triggering in always-on circuits using the TPC24AHM3/87A.
TPC24AHM3/87A 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):
- 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 ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
TPC24AHM3/87A FAQ
1.How can I place an order for TPC24AHM3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC24AHM3/87A 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 TPC24AHM3/87A reliable?
The price and inventory of TPC24AHM3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC24AHM3/87A is usually 5 days.
3.What payment methods are accepted for TPC24AHM3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC24AHM3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC24AHM3/87A?
TPC24AHM3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC24AHM3/87A 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 TPC24AHM3/87A?
For technical support, including TPC24AHM3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC24AHM3/87A requirements.
6.How does Aetrix verify that TPC24AHM3/87A is sourced from the original manufacturer or authorized distributors?
All TPC24AHM3/87A 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 TPC24AHM3/87A meets industry standards.
7.What is the process for return or replacement of TPC24AHM3/87A?
All TPC24AHM3/87A units undergo pre-shipment inspection (PSI). If there is an issue with TPC24AHM3/87A, 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 TPC24AHM3/87A part is unused and in its original packaging.
Return procedure for TPC24AHM3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC24AHM3/87A Tags
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