My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPC9.1AHM3_A/I
- Part No.:
- TPC9.1AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
TPC9.1AHM3_A/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:2,872
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPC9.1AHM3_A/I from Vishay General Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) in TO-277A (SMPC) package, designed for clamping inductive switching transients and lightning-induced surges on signal lines. It features a 8.65–9.55 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 13.4 V maximum clamping voltage (VC) at 112 A peak pulse current, and AEC-Q101 qualification for automotive use.
For engineers reviewing the TPC9.1AHM3_A/I datasheet, TPC9.1AHM3_A/I pinout, TPC9.1AHM3_A/I application, or TPC9.1AHM3_A/I equivalent, key selection criteria include unidirectional clamping capability, 185 °C junction temperature rating, low-profile 1.1 mm height, MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction with matte tin-plated leads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve stable breakdown behavior and low incremental surge resistance. Its unidirectional architecture enables integration into DC power rails and signal paths where reverse conduction must be blocked during normal operation.
The device operates across –65 °C to +185 °C junction temperature range and meets JESD201 Class 2 whisker test requirements. Its TO-277A (SMPC) package supports automated placement and provides thermal performance validated per JEDEC standards with 2 oz. copper PCB mounting recommendations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V - defines reliable turn-on threshold under 1.0 mA test current, ensuring predictable clamping onset |
| VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 50 μA, suitable for 5 V–7 V rail protection |
| VC @ IPPM | 13.4 V at 112 A - clamping voltage under 10/1000 μs surge, limiting downstream IC stress during ESD or load dump |
| PPPM | 1500 W - peak pulse power handling capacity, enabling robust protection against high-energy transients |
| TJ max. | +185 °C - extended junction temperature rating supports under-hood automotive and industrial environments |
| Package | TO-277A (SMPC) - surface-mount, 3-terminal, low-profile (1.1 mm typical height) package with optimized thermal pad layout |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
TO-277A (SMPC) is a 3-terminal surface-mount package with cathode-anode-cathode configuration. The package measures 4.80 mm × 3.70 mm × 1.1 mm (L × W × H) and features a thermally enhanced exposed pad design per JEDEC outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to protected line; conducts only during overvoltage events above VBR |
| 2 (Anode) | Reference/ground node | Typically tied to system ground or low-impedance return path for effective clamping |
| 3 (Cathode) | Reverse-biased terminal | Electrically identical to Pin 1; dual-cathode layout improves current sharing and thermal distribution |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR tolerance and long-term leakage stability |
| Low profile height | 1.1 mm typical - enables use in space-constrained modules such as ADAS sensors and infotainment ECUs |
| MSL Level 1 rating | No floor life limitation - eliminates bake requirements prior to reflow, simplifying SMT assembly |
| Halogen-free & RoHS | HM3 suffix confirms compliance with environmental regulations and automotive material categorization (Doc. 99912) |
| Automated placement compatibility | Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 mechanical strength specs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting LIN bus or 12 V supply inputs in body control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 7.78 V while blocking reverse current. Use Value: Limits voltage excursion to ≤13.4 V during 112 A transients, preventing damage to MCU I/O and CAN/LIN transceivers. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to absorb ESD and switching noise induced by nearby solenoids. Use Value: Sub-10 ns response time and 13.4 V clamping protect 12-bit ADC front-ends from offset drift and latch-up. |
| Consumer Device USB Port Protection | Telecom Base Station DC Feed Protection |
Use Scenario: Adding secondary surge immunity to USB VBUS lines in portable docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS placed upstream of USB power switch to limit inrush-induced overshoot and hot-swap spikes. Use Value: Withstands 1500 W pulses without degradation, maintaining 7.78 V stand-off for normal 5 V operation. | Use Scenario: Protecting remote radio head (RRH) DC feed lines from lightning-induced surges on tower-mounted equipment. IC Role / Device Role / Timing Role: TVS installed at DC input connector to shunt common-mode transients before entering DC-DC converters. Use Value: 185 °C TJ rating ensures reliability in sealed outdoor enclosures with limited airflow and high ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS 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 | Suitable for lower-energy consumer applications; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and surge energy demands |
| TPC9.1AHM3_A/H | Same die and electrical specs; differs only in tape-and-reel packaging (7″ vs. 13″ reel, 1500 vs. 6500 units) | Identical functional performance; choice depends on production volume and SMT line feeder compatibility | Choose TPC9.1AHM3_A/H for pilot runs or smaller batch builds requiring 7″ reels |
Compared with SMAJ9.0A and TPC9.1AHM3_A/H, the TPC9.1AHM3_A/I delivers higher surge robustness (1500 W vs. 400 W) and automotive qualification, while differing from its sibling only in reel size-making it optimal for high-volume automated assembly with 13″ feeders.
Availability
TPC9.1AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom infrastructure requiring stable component supply, AEC-Q101 compliance, and high-energy transient suppression.
Supply support for TPC9.1AHM3_A/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 and application-specific optimization.
The TPC series belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for automotive and industrial environments demanding AEC-Q101 qualification, high-temperature operation, and consistent clamping performance under repetitive surge stress.
FAQ
What is the clamping voltage of TPC9.1AHM3_A/I under maximum surge conditions?
The TPC9.1AHM3_A/I has a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current of 112 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains within safe operating limits during transient events. The TPC9.1AHM3_A/I maintains this clamping performance across its full operating temperature range up to +185 °C junction temperature.
Is TPC9.1AHM3_A/I suitable for automotive applications?
Yes, the TPC9.1AHM3_A/I is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and chassis-mounted automotive systems. Its TO-277A package meets JESD201 Class 2 whisker resistance, and the HM3 suffix confirms halogen-free, RoHS-compliant, and automotive-grade material categorization per Vishay Doc. 99912. The TPC9.1AHM3_A/I is widely used in body control modules, ADAS sensors, and infotainment power supplies.
How does the dual-cathode configuration of TPC9.1AHM3_A/I improve performance?
The TPC9.1AHM3_A/I uses a three-terminal TO-277A (SMPC) package with Pins 1 and 3 both designated as cathodes and Pin 2 as the anode. This symmetric dual-cathode layout improves current sharing during high-amplitude transients and enhances thermal dissipation across the package's exposed copper area. It also allows flexible PCB layout-such as placing the anode trace centrally-to reduce parasitic inductance and improve clamping speed. The TPC9.1AHM3_A/I benefits from this structure without requiring external balancing components.
What is the meaning of the "HM3_A/I" suffix in TPC9.1AHM3_A/I?
The "HM3" suffix indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. The "A" denotes revision level, and "I" specifies packaging: 13″ diameter plastic tape-and-reel with 6500 units per reel. This distinguishes TPC9.1AHM3_A/I from the "H" variant (7″ reel, 1500 units). All electrical and thermal specifications remain identical across HM3_A/I and HM3_A/H variants of the TPC9.1AHM3_A/I.
Does TPC9.1AHM3_A/I require derating at elevated ambient temperatures?
Yes, the TPC9.1AHM3_A/I must be derated according to Figure 2 in Vishay Document 89056: peak pulse power decreases linearly above TA = 25 °C, reaching ~50 % of 1500 W at +100 °C ambient. Derating is based on junction-to-ambient thermal resistance and PCB copper area. For designs operating above 85 °C ambient, thermal simulation or empirical testing with the recommended 2 oz. copper mounting pad is required to confirm safe operation. The TPC9.1AHM3_A/I retains full functionality up to +185 °C junction temperature, but power handling is thermally constrained.
TPC9.1AHM3_A/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:
- 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/I FAQ
1.How can I place an order for TPC9.1AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPC9.1AHM3_A/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 TPC9.1AHM3_A/I reliable?
The price and inventory of TPC9.1AHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for TPC9.1AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPC9.1AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPC9.1AHM3_A/I?
TPC9.1AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPC9.1AHM3_A/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 TPC9.1AHM3_A/I?
For technical support, including TPC9.1AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPC9.1AHM3_A/I requirements.
6.How does Aetrix verify that TPC9.1AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPC9.1AHM3_A/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 TPC9.1AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPC9.1AHM3_A/I?
All TPC9.1AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPC9.1AHM3_A/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 TPC9.1AHM3_A/I part is unused and in its original packaging.
Return procedure for TPC9.1AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPC9.1AHM3_A/I 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 …
