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Vishay General Semiconductor - Diodes Division TPSMC9.1AHE3_A/H
- Part No.:
- TPSMC9.1AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC9.1AHE3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,835
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Product details
Overview
TPSMC9.1AHE3_A/H 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 a 9.1 V nominal breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 13.4 V maximum clamping voltage at 112 A peak current, and operates up to +185 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive power systems.
For engineers reviewing the TPSMC9.1AHE3_A/H datasheet, TPSMC9.1AHE3_A/H pinout, TPSMC9.1AHE3_A/H application, or TPSMC9.1AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 13.4 V clamping performance at rated surge current, MSL Level 1 moisture sensitivity, and compatibility with high-reliability automotive PCB layouts requiring TJ = 185 °C operation.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional structure provides precise reverse-biased clamping during overvoltage events, with fast response time and excellent clamping ratio (VC/VBR ≈ 1.48).
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supports 10 µA max reverse leakage at VWM, and exhibits a +0.060 %/°C temperature coefficient of VBR, enabling predictable voltage shift across its -65 °C to +185 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V - ensures reliable turn-on above system nominal voltage while avoiding false triggering |
| VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 50 µA, compatible with 5–7 V supply rails |
| VC @ IPPM | 13.4 V - clamps transients to safe levels for 3.3 V/5 V logic and automotive microcontrollers |
| PPPM | 1500 W - handles high-energy inductive switching surges (e.g., solenoid drivers, motor controllers) |
| IPPM | 112 A - peak surge current capability with 10/1000 µs waveform, validated on 8 mm × 8 mm copper pads |
| TJ max | +185 °C - enables under-hood automotive placement without derating in high-ambient environments |
| αT | +0.060 %/°C - allows accurate VBR prediction across temperature for robust design margining |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, cathode indicated by molded band. Dimensions: 6.22 mm × 5.59 mm × 2.46 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; must be routed with minimal inductance for effective clamping |
| Cathode | Clamped output / protected line connection | Connected directly to the line being protected (e.g., battery rail, sensor VCC); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, mechanical shock, and humidity testing |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling |
| 1500 W peak pulse power | Provides robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events |
| Low VC/VBR ratio (1.48) | Minimizes overvoltage stress on downstream components during clamping, improving system immunity margin |
| Junction temp. rating: –65 to +185 °C | Supports operation in engine control units, transmission modules, and other high-thermal-load automotive zones |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and input filter capacitor. Use Value: Limits transient voltage to ≤13.4 V, preventing damage to 16 V-rated DC-DC converters and microcontrollers. | Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on 0–5 V or 4–20 mA signal paths. Use Value: Clamps ESD and inductive kickback without distorting low-bandwidth sensor signals due to fast response and stable VBR. |
| Automotive Lighting Driver Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding LED driver ICs in headlamp modules subjected to PWM switching noise and relay bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on high-side switch node and supply input. Use Value: Withstands 200 A surge current and maintains clamping below 14 V, preserving MOSFET gate oxide integrity. | Use Scenario: Secondary-side transient suppression in USB-C PD adapters after rectification. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5–20 V output rails to absorb coupling noise from primary-side switching. Use Value: RoHS-compliant HE3 suffix and 7.78 V VWM ensure compatibility with regulated output tolerances and safety certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Lower PPPM (400 W), same SMC package, VBR = 9.0 V min, VC = 14.4 V @ 27.8 A | Rated for lower-energy transients; not AEC-Q101 qualified | Select when cost-sensitive industrial designs require basic surge protection without automotive qualification |
| TPSMC9.0AHE3_A/H | Identical construction and qualification; VBR min = 8.55 V (vs. 8.65 V), VC = 13.4 V unchanged | No functional difference; minor VBR tolerance variation within same family spec | Acceptable drop-in alternative where ±0.1 V VBR shift is acceptable in system-level margining |
Compared with SMAJ9.0A, TPSMC9.1AHE3_A/H delivers 3.8× higher surge power handling and automotive qualification; compared with TPSMC9.0AHE3_A/H, it offers tighter VBR distribution and identical clamping, making it preferable for designs requiring strict overvoltage threshold control.
Availability
TPSMC9.1AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, lighting driver modules, and consumer power adapter designs requiring stable component supply and long-term lifecycle support.
Supply support for TPSMC9.1AHE3_A/H 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 TPSMC series belongs to Vishay's high-power PAR® TVS platform, engineered specifically for harsh-environment transient suppression in automotive power systems and industrial controls where 1500 W surge capability and +185 °C operation are mandatory.
FAQ
What is the clamping voltage of the TPSMC9.1AHE3_A/H at its rated peak pulse current?
The TPSMC9.1AHE3_A/H has a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current (IPPM) of 112 A using a 10/1000 µs waveform. This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and confirms the device's ability to limit transient overvoltage to a safe level for downstream 12 V automotive electronics. The TPSMC9.1AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is the TPSMC9.1AHE3_A/H qualified for automotive applications?
Yes, the TPSMC9.1AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3", which denotes RoHS-compliance and automotive qualification. It meets rigorous stress tests including temperature cycling, mechanical shock, and high-temperature reverse bias life testing. The TPSMC9.1AHE3_A/H is intended for use in engine control units, body electronics, and ADAS modules where automotive-grade reliability is required.
What does the "HE3" suffix mean in TPSMC9.1AHE3_A/H?
The "HE3" suffix in TPSMC9.1AHE3_A/H indicates that the device is RoHS-compliant, halogen-free, and AEC-Q101 qualified. It also specifies compliance with JESD 201 class 2 whisker resistance and MSL Level 1 moisture sensitivity (peak reflow temperature 260 °C). The "A/H" denotes revision code "A" and packaging in 7-inch tape-and-reel format with 850 units per reel. The TPSMC9.1AHE3_A/H is fully traceable and manufactured under Vishay's automotive quality system.
How does the TPSMC9.1AHE3_A/H compare to bidirectional TVS diodes in circuit protection?
The TPSMC9.1AHE3_A/H is unidirectional only, meaning it functions as a reverse-biased zener-like clamp and conducts only during negative transients relative to its cathode. Unlike bidirectional variants, it does not protect against positive-going surges on grounded lines. Its advantage lies in lower leakage and sharper knee characteristics for DC-biased rails like automotive battery inputs. The TPSMC9.1AHE3_A/H is selected when the protected line has defined polarity and requires optimal clamping precision rather than symmetrical surge handling.
What is the maximum reverse leakage current of the TPSMC9.1AHE3_A/H at its stand-off voltage?
The TPSMC9.1AHE3_A/H exhibits a maximum reverse leakage current (IR) of 50 µA at its stand-off voltage (VWM) of 7.78 V and ambient temperature of 25 °C. At elevated junction temperature (TJ = 150 °C), leakage increases to 500 µA - still within specification and compatible with low-power sensor and microcontroller inputs. This low leakage ensures minimal impact on quiescent current budgets in always-on automotive modules. The TPSMC9.1AHE3_A/H maintains these values across its full rated temperature range.
TPSMC9.1AHE3_A/H 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_A/H FAQ
1.How can I place an order for TPSMC9.1AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC9.1AHE3_A/H 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_A/H reliable?
The price and inventory of TPSMC9.1AHE3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for TPSMC9.1AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC9.1AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC9.1AHE3_A/H?
TPSMC9.1AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC9.1AHE3_A/H 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_A/H?
For technical support, including TPSMC9.1AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC9.1AHE3_A/H requirements.
6.How does Aetrix verify that TPSMC9.1AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMC9.1AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of TPSMC9.1AHE3_A/H?
All TPSMC9.1AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC9.1AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for TPSMC9.1AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC9.1AHE3_A/H Tags
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