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Vishay General Semiconductor - Diodes Division TPSMC9.1AHE3/9AT
- Part No.:
- TPSMC9.1AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC9.1AHE3/9AT.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,406
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Product details
Overview
TPSMC9.1AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 9.1 V nominal breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 13.4 V maximum clamping voltage (VC) at 112 A peak pulse current, 1500 W peak pulse power (10/1000 μs), and operates up to +185 °C junction temperature - deployed in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the TPSMC9.1AHE3/9AT datasheet, TPSMC9.1AHE3/9AT pinout, TPSMC9.1AHE3/9AT application, or TPSMC9.1AHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 13.4 V clamping performance under 112 A surge, thermal stability at TJ = 185 °C, and compatibility with automated SMT assembly using matte tin-plated leads per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver low incremental surge resistance and excellent clamping capability during fast-rising transients. Its junction passivation enables stable operation under high-temperature stress (TJ = 185 °C), meeting automotive reliability requirements without derating in harsh environments.
The device responds within picoseconds to ESD and switching-induced surges, with clamping behavior defined by its 10/1000 μs waveform rating and validated 13.4 V VC at IPPM = 112 A. It is rated for non-repetitive surge currents up to 200 A (8.3 ms half-sine) and exhibits <50 μA reverse leakage at VWM = 7.78 V and 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65 V (min) to 9.55 V (max) at 1 mA test current - defines precise overvoltage triggering threshold for reliable system-level protection. |
| Stand-off Voltage VWM | 7.78 V - maximum continuous working voltage before leakage exceeds 50 μA; ensures no false triggering in nominal 7.5–8 V supply rails. |
| Clamping Voltage VC | 13.4 V at 112 A peak pulse - limits downstream IC voltage stress during 1500 W transient events, protecting 12 V automotive electronics. |
| Peak Pulse Power | 1500 W (10/1000 μs waveform) - sustains high-energy surges common in inductive load switching and load-dump scenarios. |
| Junction Temperature Range | -65 °C to +185 °C - supports under-hood automotive placement and industrial environments without thermal derating penalties. |
| Polarity & Package | Unidirectional; SMC (DO-214AB) - standard surface-mount footprint with cathode band marking, compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line's lower-potential side (e.g., ground or return path) in unidirectional clamp configuration. |
| Cathode | Current exit terminal during forward conduction; clamping node | Connected to protected line's higher-potential side (e.g., 12 V rail); absorbs surge energy when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, body electronics, and ADAS modules. |
| Junction passivation | Optimized anisotropic rectifier structure reduces parameter drift over time and temperature, ensuring long-term clamping consistency in industrial deployments. |
| MSL Level 1 rating | Rated for reflow at peak 260 °C without moisture-induced damage - eliminates pre-bake requirement for high-volume SMT manufacturing. |
| Low clamping ratio (VC/VBR) | 1.47 (13.4 V / 9.1 V) - minimizes overvoltage margin while maintaining robust surge handling, critical for 12 V system compliance with ISO 7637-2. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground, absorbing >100 A surge currents within nanoseconds. Use Value: Limits rail voltage to ≤13.4 V during 1500 W transients, preventing latch-up or permanent damage to MCU, CAN transceivers, and power management ICs. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Signal-line TVS mounted at connector entry point, shunting ESD and inductive kickback from solenoid actuation. Use Value: Clamps transients to 13.4 V with <50 μA leakage at 7.78 V, preserving signal integrity and ADC accuracy without loading the 0–10 V sensor output. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Protection |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters subjected to capacitor discharge and hot-plug events. IC Role / Device Role / Timing Role: Standoff-rated TVS across +VOUT and GND, activated only during fault conditions exceeding 7.78 V. Use Value: Prevents catastrophic failure of synchronous rectifiers and secondary-side controllers by clamping to 13.4 V before MOSFET avalanche occurs. |
Use Scenario: Protecting PoE-powered devices (e.g., IP cameras, wireless APs) from DC feed surges and lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Per-port unidirectional TVS on DC input lines, coordinated with upstream Ethernet surge protectors. Use Value: Withstands repeated 1500 W pulses while maintaining <1.0 μA leakage at 7.78 V, ensuring uninterrupted data link operation during transient events. |
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 peak pulse power (400 W), SMA package (smaller thermal mass), VC = 14.4 V at 27.5 A | Not AEC-Q101 qualified; limited to consumer/industrial use below 150 °C ambient | Select when cost sensitivity outweighs automotive qualification and surge energy requirements. |
| TPSMC9.0AHE3 | Identical SMC package and AEC-Q101 qualification; VBR = 8.55–8.95 V (min/max), VC = 13.4 V at 112 A - functionally aligned but not identical marking code | Same automotive and industrial deployment scope; minor VBR tolerance shift affects trigger precision in tight-margin designs | Preferred for drop-in replacement where 9.0 V nominal breakdown is acceptable and HE3 suffix matches sourcing requirements. |
Compared with SMAJ9.0A and TPSMC9.0AHE3, the TPSMC9.1AHE3/9AT delivers higher surge robustness (1500 W vs. 400 W) and guaranteed AEC-Q101 qualification, making it uniquely suitable for automotive power domains where thermal stability up to 185 °C and repeatable clamping under load-dump conditions are mandatory.
Availability
TPSMC9.1AHE3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power feeding systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMC9.1AHE3/9AT 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, thermal performance, and automotive qualification.
The TPSMC9.1AHE3/9AT belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for automotive and industrial applications demanding AEC-Q101 compliance, 185 °C operation, and consistent clamping under repetitive surge stress.
FAQ
What is the exact breakdown voltage range for TPSMC9.1AHE3/9AT?
The TPSMC9.1AHE3/9AT has a guaranteed breakdown voltage (VBR) range of 8.65 V (minimum) to 9.55 V (maximum) at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This specification is confirmed in the official Vishay datasheet document 88407, revision 19-Jan-2024, and applies directly to the TPSMC9.1AHE3/9AT variant with HE3 suffix and 9AT marking code.
Is TPSMC9.1AHE3/9AT AEC-Q101 qualified?
Yes, TPSMC9.1AHE3/9AT is AEC-Q101 qualified. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, as stated in the Vishay datasheet section "MECHANICAL DATA" and confirmed in the ordering information table. This qualification covers temperature cycling, high-temperature reverse bias, and surge testing per automotive reliability standards.
What is the clamping voltage of TPSMC9.1AHE3/9AT at its rated peak pulse current?
The TPSMC9.1AHE3/9AT clamps to a maximum of 13.4 V at its rated peak pulse current of 112 A (10/1000 μs waveform), as specified in the "ELECTRICAL CHARACTERISTICS" table of Vishay document 88407. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during transient events.
Does TPSMC9.1AHE3/9AT have unidirectional or bidirectional polarity?
TPSMC9.1AHE3/9AT is unidirectional only, as clearly stated in the "FEATURES" section of the Vishay datasheet. Its polarity is marked by a cathode band on the SMC (DO-214AB) package body, and it conducts only when the cathode is at higher potential than the anode - essential for DC rail protection where reverse conduction must be avoided.
What is the maximum operating junction temperature for TPSMC9.1AHE3/9AT?
The TPSMC9.1AHE3/9AT has a maximum operating junction temperature (TJ) of +185 °C, verified per the "MAXIMUM RATINGS" table in Vishay document 88407. This rating enables deployment in under-hood automotive locations and high-ambient industrial enclosures without thermal derating, distinguishing it from standard TVS diodes rated only to +150 °C.
TPSMC9.1AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- 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:
- DO-214AB (SMCJ)
TPSMC9.1AHE3/9AT FAQ
1.How can I place an order for TPSMC9.1AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC9.1AHE3/9AT 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 TPSMC9.1AHE3/9AT reliable?
The price and inventory of TPSMC9.1AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC9.1AHE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC9.1AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC9.1AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC9.1AHE3/9AT?
TPSMC9.1AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC9.1AHE3/9AT 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 TPSMC9.1AHE3/9AT?
For technical support, including TPSMC9.1AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC9.1AHE3/9AT requirements.
6.How does Aetrix verify that TPSMC9.1AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC9.1AHE3/9AT 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 TPSMC9.1AHE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC9.1AHE3/9AT?
All TPSMC9.1AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC9.1AHE3/9AT, 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 TPSMC9.1AHE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC9.1AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC9.1AHE3/9AT Tags
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