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Vishay General Semiconductor - Diodes Division TPSMC9.1AHE3_A/I
- Part No.:
- TPSMC9.1AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC9.1AHE3_A/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,900
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Product details
Overview
TPSMC9.1AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping inductive switching transients and lightning-induced surges on power and signal lines. It features a 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 13.4 V clamping voltage at 112 A peak current, and operates up to +185 °C junction temperature - deployed in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMC9.1AHE3_A/I datasheet, TPSMC9.1AHE3_A/I pinout, TPSMC9.1AHE3_A/I application, or TPSMC9.1AHE3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal derating behavior, SMC package mechanical dimensions, and direct alternatives with documented clamping and leakage differences.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and sub-nanosecond response time under transient stress. Its unidirectional polarity enables forward-biased operation during overvoltage events while maintaining <50 µA reverse leakage at 7.78 V and 25 °C.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supports MSL Level 1 reflow (260 °C peak), and exhibits +0.060 %/°C temperature coefficient of VBR, enabling predictable clamping shift across -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 triggering above system nominal voltage while avoiding false trips during ripple or tolerance drift |
| VWM | 7.78 V - maximum continuous reverse voltage before significant leakage; compatible with 5 V–8 V logic and sensor supply rails |
| IPPM | 112 A - peak surge current capability at 10/1000 µs waveform, sufficient for ISO 7637-2 Pulse 1 & 2 and IEC 61000-4-5 Level 3 |
| VC @ IPPM | 13.4 V - clamping voltage limits downstream IC stress to safe levels during worst-case transients |
| PPPM | 1500 W - peak pulse power rating defines energy-handling capacity for short-duration surges without thermal runaway |
| TJ max | +185 °C - enables use in under-hood automotive environments and high-temperature industrial enclosures without derating |
| Leakage @ VWM | 50 µA at 25 °C - low standby current preserves battery life in always-on systems and avoids loading sensitive analog inputs |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to ground or low-impedance reference; carries full surge current during clamping |
| Cathode | Transient voltage sensing node | Connected to protected line (e.g., 12 V rail or CAN H); initiates conduction when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage after 1000+ surge cycles under automotive thermal cycling conditions |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against load dump and inductive kickback in 12 V/24 V vehicle subsystems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD per JESD22-A114 |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without pre-baking or special handling |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIO and LIN bus transceivers from load-dump spikes and relay coil flyback in door module PCBs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between protected signal line and chassis ground, responding within <1 ns to limit voltage to ≤13.4 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic interfaces while meeting ISO 16750-2 load dump test requirements. |
Use Scenario: Safeguarding 24 V DC digital input channels of programmable logic controllers against field-wiring induced surges and electrostatic discharge. IC Role / Device Role / Timing Role: Standoff voltage (7.78 V) blocks normal operation leakage; clamps transients >9.1 V to protect optocoupler input stage. Use Value: Enables >100,000 surge cycles without degradation, reducing field failure rates in factory automation equipment. |
| Automotive Camera Power Rail | Telecom Base Station Sensor Interface |
Use Scenario: Shielding 12 V camera module power input from alternator ripple and ignition noise in ADAS front-facing cameras. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, placed upstream of DC/DC converter input capacitor. Use Value: Maintains <50 µA leakage at 7.78 V to avoid degrading quiescent current budget in always-on vision systems. |
Use Scenario: Protecting RS-485 transceiver bias resistors and termination networks from lightning-induced common-mode surges on outdoor telecom sensor links. IC Role / Device Role / Timing Role: Unidirectional TVS connected between data line and local ground plane, suppressing differential-mode transients up to 1500 W. Use Value: Delivers 13.4 V clamping at 112 A, ensuring transceiver ICs remain within absolute maximum ratings during IEC 61000-4-5 testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Lower PPPM (600 W), higher VC (14.5 V @ 43.3 A), SMB package (smaller footprint, lower thermal mass) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump simulation | Select only for space-constrained consumer electronics where 1500 W surge capacity is not required. |
| TPSMC9.0AHE3_A/I | Identical package and qualification; VBR = 8.55–8.95 V (min/typ/max), VWM = 7.7 V, VC = 13.3 V @ 113 A | Nearly identical performance; minor VBR binning difference allows tighter voltage margin control in precision rail protection | Preferred when matching legacy designs using 9.0 V nominal clamping or requiring tighter VBR tolerance. |
Compared with TPSMC9.1AHE3_A/I, SMBJ9.0A offers smaller size but sacrifices 60% peak power handling and clamping precision, while TPSMC9.0AHE3_A/I provides functionally identical protection with marginally lower standoff and breakdown voltages - both require review of system-level surge test compliance before substitution.
Availability
TPSMC9.1AHE3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input modules, and telecom sensor interface circuits requiring stable component supply with AEC-Q101 qualification and high-temperature reliability.
Supply support for TPSMC9.1AHE3_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, TVS devices, and MOSFETs with emphasis on high-reliability, high-power, and automotive-grade solutions.
The TPSMC series was engineered specifically for demanding transient suppression in automotive and industrial environments, combining high-temperature operation (TJ = 185 °C), AEC-Q101 qualification, and robust 1500 W surge capability in the rugged SMC package.
FAQ
What is the clamping voltage of TPSMC9.1AHE3_A/I at its rated peak pulse current?
The TPSMC9.1AHE3_A/I has a maximum clamping voltage (VC) of 13.4 V when subjected to its rated peak pulse current (IPPM) of 112 A under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and guarantees that downstream circuitry remains below critical voltage thresholds during surge events. The TPSMC9.1AHE3_A/I maintains this clamping performance across its full operating temperature range, with minimal variation due to its +0.060 %/°C VBR temperature coefficient.
Is TPSMC9.1AHE3_A/I qualified for automotive applications?
Yes, TPSMC9.1AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's documentation and the HE3 suffix designation. It meets stress test requirements including high-temperature operating life (HTOL), temperature cycling, and electrostatic discharge (HBM and CDM), making it suitable for under-hood and cabin-mounted automotive electronics. The TPSMC9.1AHE3_A/I also supports MSL Level 1 reflow and operates up to +185 °C junction temperature - key criteria for automotive-grade TVS diodes.
What does the "HE3" suffix mean in TPSMC9.1AHE3_A/I?
The "HE3" suffix in TPSMC9.1AHE3_A/I indicates RoHS-compliant construction and AEC-Q101 qualification. It denotes that the device uses matte tin-plated leads, passes JESD201 Class 2 whisker testing, and conforms to MSL Level 1 moisture sensitivity standards (peak reflow at 260 °C). The "A/I" portion specifies packaging: 13-inch tape-and-reel with 3500 units per reel. The TPSMC9.1AHE3_A/I is distinct from HM3-suffix variants, which add halogen-free molding compound.
How does TPSMC9.1AHE3_A/I compare to bidirectional TVS diodes in surge protection?
TPSMC9.1AHE3_A/I is unidirectional and optimized for DC power rail and single-polarity signal line protection, offering lower leakage (<50 µA at 7.78 V) and tighter VBR tolerance than comparable bidirectional parts. Unlike bidirectional TVS diodes, the TPSMC9.1AHE3_A/I cannot suppress AC or bipolar transients - it must be oriented with cathode toward the protected line. Its design prioritizes clamping efficiency and thermal robustness in automotive 12 V systems, where unidirectional surges dominate.
What is the maximum reverse leakage current of TPSMC9.1AHE3_A/I at 7.78 V and 150 °C?
The TPSMC9.1AHE3_A/I exhibits a maximum reverse leakage current (ID) of 500 µA at VWM = 7.78 V and TJ = 150 °C, as specified in the Vishay datasheet. This elevated leakage - 10× higher than its 25 °C value of 50 µA - reflects expected semiconductor behavior at high temperature but remains within safe limits for most automotive and industrial applications. System designers using TPSMC9.1AHE3_A/I should verify that this leakage does not affect upstream regulator stability or sensor reference integrity.
TPSMC9.1AHE3_A/I 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/I FAQ
1.How can I place an order for TPSMC9.1AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC9.1AHE3_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 TPSMC9.1AHE3_A/I reliable?
The price and inventory of TPSMC9.1AHE3_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 TPSMC9.1AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC9.1AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC9.1AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC9.1AHE3_A/I?
TPSMC9.1AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC9.1AHE3_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 TPSMC9.1AHE3_A/I?
For technical support, including TPSMC9.1AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC9.1AHE3_A/I requirements.
6.How does Aetrix verify that TPSMC9.1AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC9.1AHE3_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 TPSMC9.1AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC9.1AHE3_A/I?
All TPSMC9.1AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC9.1AHE3_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 TPSMC9.1AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMC9.1AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC9.1AHE3_A/I Tags
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