My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPC18HM3/86A
- Part No.:
- TPC18HM3/86A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC18HM3/86A.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,405
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPC18HM3/86A 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 surge protection. It features a standoff voltage of 15.3 V, breakdown voltage of 17.1–18.9 V at 1 mA, clamping voltage of 25.2 V at 59.5 A peak pulse current, and operates up to +185 °C junction temperature.
For engineers reviewing the TPC18HM3/86A datasheet, TPC18HM3/86A pinout, TPC18HM3/86A application, or TPC18HM3/86A equivalent, key selection criteria include its AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 rating, unidirectional polarity, and suitability for protecting MOSFETs, sensor signal lines, and IC power rails against inductive switching transients.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under repetitive surge stress. Its 1500 W peak pulse power rating (10/1000 µs waveform) and low incremental surge resistance enable robust suppression of fast-rising transients induced by load switching.
The device exhibits a typical temperature coefficient of VBR of +0.080 %/°C and maintains clamping performance across -65 °C to +185 °C operating junction range. Its TO-277A package supports automated placement and meets UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.3 V - Maximum continuous reverse working voltage before leakage exceeds 1 µA; defines safe operating margin below breakdown. |
| VBR (min/typ/max) | 17.1 / 18.0 / 18.9 V at 1 mA - Confirmed breakdown threshold ensuring predictable turn-on during overvoltage events. |
| VC @ IPPM | 25.2 V at 59.5 A - Clamping voltage under full 1500 W surge; determines maximum stress imposed on protected circuitry. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; enables protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| TJ max | +185 °C - Junction temperature limit supporting under-hood automotive use and high ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and HTRB testing per JESD47. |
| MSL Level | Level 1 (per J-STD-020) - No floor life limitation; suitable for standard SMT reflow without dry pack or baking. |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, 3-terminal configuration with cathode band marking. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H), low-profile design compatible with space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 3) | Current entry point during forward conduction | Connected to system ground or low-side reference; forms return path during clamping. |
| Cathode 1 (Terminal 1) | Primary cathode connection | Connected to protected line (e.g., 12 V rail or sensor output); carries surge current into device. |
| Cathode 2 (Terminal 2) | Secondary cathode connection | Parallel cathode terminal enabling higher surge current sharing and lower effective dynamic impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Protects only against positive transients on DC-biased lines-ideal for 12 V/24 V automotive power rails where reverse polarity is not expected. |
| 1.1 mm typical height | Enables placement beneath connectors or in tight board-to-board spacing without mechanical interference. |
| Halogen-free, RoHS-compliant construction | Meets environmental compliance requirements for automotive and industrial end equipment without compromising surge performance. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt conditions, improving protection margin for fast-edge transients (e.g., relay coil flyback). |
| Junction passivation optimized design | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure per AEC-Q101 stress tests. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs, body control modules, and lighting drivers from load dump and inductive switching spikes per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp transients before they reach downstream regulators and microcontrollers. Use Value: Withstands 1500 W surges and operates up to +185 °C, meeting under-hood thermal and surge requirements without derating. |
Use Scenario: Shielding analog outputs of pressure, temperature, or position sensors in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential or single-ended signal pairs to suppress sub-100 ns transients without distorting signal integrity. Use Value: 25.2 V clamping voltage ensures sensor ICs with 3.3 V or 5 V I/O remain within absolute maximum ratings during 8/20 µs surges. |
| Motor Drive Gate Protection | Telecom DC Power Interface |
|
Use Scenario: Safeguarding high-side and low-side MOSFET gate drivers in BLDC motor inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: TVS placed between gate and source terminals to clamp dv/dt-induced overshoot and prevent unintended turn-on or oxide damage. Use Value: Fast response time and low VC limit gate-source voltage excursion to <25.2 V, preserving driver IC reliability across 100 kcycles+ lifetime. |
Use Scenario: Protecting PoE-powered network switches and base station RF modules from lightning-induced surges entering via 48 V DC input ports. IC Role / Device Role / Timing Role: Primary front-end TVS on DC input stage, coordinated with upstream fuses and secondary filtering to meet IEC 61000-4-5 Level 4. Use Value: 1500 W rating and AEC-Q101 qualification provide proven field reliability in outdoor telecom enclosures with wide thermal swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | Lower PPPM (400 W), SMA package (higher thermal resistance), VC = 29.2 V at 13.7 A | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when cost sensitivity outweighs automotive qualification and surge energy requirements. |
| TPC18AHE3_A/H | Same electrical specs and TO-277A package; differs only in tape-and-reel packaging (H vs. 86A reel code) and revision suffix (E vs. 86A) | No functional difference; identical performance and footprint | Preferred for new designs requiring latest Vishay revision and standard 7" reel logistics. |
Compared with SMAJ18A and TPC18AHE3_A/H, the TPC18HM3/86A delivers higher surge robustness (1500 W vs. 400 W), automotive qualification, and lower clamping voltage-making it optimal for safety-critical 12 V systems where layout space allows TO-277A mounting.
Availability
TPC18HM3/86A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and motor drive gate safeguarding requiring stable component supply across multi-year production cycles.
Supply support for TPC18HM3/86A 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 passive components for automotive, industrial, and computing markets.
The TPC18HM3/86A belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment vehicle electronics and ruggedized industrial controls.
FAQ
What is the clamping voltage of the TPC18HM3/86A under maximum surge conditions?
The TPC18HM3/86A has a maximum clamping voltage (VC) of 25.2 V at 59.5 A peak pulse current (IPPM), measured using a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 1500 W transient event and is confirmed in the Vishay datasheet Document Number 89056, page 2.
Is the TPC18HM3/86A suitable for automotive applications?
Yes, the TPC18HM3/86A is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for under-hood and chassis-mounted automotive electronics. Its TO-277A package, halogen-free construction, and MSL Level 1 rating further support automotive manufacturing requirements.
What does the "86A" suffix indicate in TPC18HM3/86A?
The "86A" suffix denotes the tape-and-reel packaging option: 7-inch diameter reel with 1500 units per reel, per Vishay's ordering nomenclature in Document Number 89056. It reflects the preferred package code and delivery mode, not a functional or electrical variant of the TPC18HM3 device itself.
How does the dual-cathode configuration of the TPC18HM3/86A improve performance?
The TPC18HM3/86A's dual-cathode (Terminals 1 and 2) structure lowers effective dynamic impedance during surge events, reducing clamping voltage rise under high di/dt conditions. This configuration enhances energy handling and improves protection margin compared to single-cathode TVS devices of similar rating.
Can the TPC18HM3/86A replace the SMAJ18A in an existing design?
No direct replacement: while both are unidirectional 18 V-class TVS diodes, the TPC18HM3/86A uses TO-277A (SMPC) packaging versus SMAJ18A's DO-214AC, requiring PCB layout changes. Additionally, TPC18HM3/86A offers higher surge rating (1500 W vs. 400 W) and AEC-Q101 qualification-benefits that necessitate validation of thermal and mechanical integration.
TPC18HM3/86A 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):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 56.6A
- 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)
TPC18HM3/86A FAQ
1.How can I place an order for TPC18HM3/86A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC18HM3/86A 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 TPC18HM3/86A reliable?
The price and inventory of TPC18HM3/86A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPC18HM3/86A is usually 5 days.
3.What payment methods are accepted for TPC18HM3/86A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC18HM3/86A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC18HM3/86A?
TPC18HM3/86A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC18HM3/86A 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 TPC18HM3/86A?
For technical support, including TPC18HM3/86A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC18HM3/86A requirements.
6.How does Aetrix verify that TPC18HM3/86A is sourced from the original manufacturer or authorized distributors?
All TPC18HM3/86A 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 TPC18HM3/86A meets industry standards.
7.What is the process for return or replacement of TPC18HM3/86A?
All TPC18HM3/86A units undergo pre-shipment inspection (PSI). If there is an issue with TPC18HM3/86A, 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 TPC18HM3/86A part is unused and in its original packaging.
Return procedure for TPC18HM3/86A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC18HM3/86A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
