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Vishay General Semiconductor - Diodes Division TPSMA9.1HE3/61T
- Part No.:
- TPSMA9.1HE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA9.1HE3/61T.pdf
- Description:
- TVS DIODE 7.37VWM 13.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,031
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Product details
Overview
TPSMA9.1HE3/61T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 29.9 V clamping voltage (VC) at 50 A peak pulse current, 400 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the TPSMA9.1HE3/61T datasheet, TPSMA9.1HE3/61T pinout, TPSMA9.1HE3/61T application, or TPSMA9.1HE3/61T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 10 µA max reverse leakage at VWM, low clamping ratio (VC/VBR ≈ 3.29), and compatibility with reflow soldering per J-STD-020 MSL level 1.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to ESD and lightning-induced transients. Its 185 °C maximum junction temperature rating supports under-hood automotive use, and its 10/1000 µs waveform capability enables robust protection against inductive switching surges in DC power rails.
The device exhibits low incremental surge resistance and excellent clamping linearity across its rated pulse current range. Its cathode-band polarity marking and matte tin-plated terminals ensure reliable PCB assembly and long-term interconnect integrity under thermal cycling and humidity stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V - ensures precise breakdown onset within ±5.5% tolerance at 1 mA test current |
| VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 10 µA, defining safe operating margin |
| VC @ IPPM | 29.9 V at 50 A - clamps transient energy to protect downstream ICs such as microcontrollers or CAN transceivers |
| PPPM | 400 W (10/1000 µs) - sustains high-energy surges without failure in automotive load-dump scenarios |
| TJ max. | +185 °C - enables operation in engine control units and industrial motor drives without derating |
| Polarity | Unidirectional - protects only against positive-going transients on anode-to-cathode bias configuration |
| MSL Level | Level 1 (260 °C peak) - supports standard lead-free reflow without moisture-induced damage |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with UL 94 V-0 flammability rating; cathode indicated by color band; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point during positive surge | Connected to protected line (e.g., 12 V rail); conducts when voltage exceeds VWM |
| Cathode | Transient current return path to ground reference | Connected to system ground; defines unidirectional clamping direction and polarity marking |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| 185 °C junction rating | Enables placement near heat sources (e.g., power MOSFETs) without thermal derating in engine control modules |
| Low clamping ratio (VC/VBR = 3.29) | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices |
| 10 µA max IR @ VWM | Reduces standby power loss in always-on circuits like automotive body controllers |
| MSL Level 1 compliance | Eliminates bake-out requirement prior to SMT assembly, reducing manufacturing cost and cycle time |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., oxygen, pressure, temperature sensors) from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor signal line and chassis ground to shunt transient energy before it reaches ADC input. Use Value: Prevents sensor signal corruption and microcontroller reset events caused by 100 V/10 ms load dump pulses. | Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs exposed to motor drive noise and relay switching spikes. IC Role / Device Role / Timing Role: Standoff protection element on differential bus lines, absorbing common-mode surges up to 400 W without affecting signal integrity. Use Value: Maintains communication uptime by limiting line voltage to ≤29.9 V during 50 A transients, preserving transceiver functional safety. |
| Consumer Power Adapter Input | Telecom DC Power Rail |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home hubs, guarding against transformer flyback spikes. IC Role / Device Role / Timing Role: Fast-response clamping diode across regulated 5 V or 12 V output, activated within <1 ns of overvoltage event. Use Value: Extends lifespan of USB-PD controllers and PMICs by limiting output overshoot to safe levels during no-load regulation faults. | Use Scenario: Surge protection on -48 V DC telecom power distribution boards feeding base station radios and remote radio heads. IC Role / Device Role / Timing Role: High-reliability unidirectional TVS on primary power feed, mounted directly at board edge connector entry point. Use Value: Withstands repeated lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) due to 400 W pulse rating and low thermal resistance. |
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 | Higher VBR (8.55–9.45 V), same 400 W rating, SMB (DO-214AA) package - 2.5 mm wider body than SMA | Requires larger PCB pad layout; slightly lower clamping voltage (28.7 V @ 50 A) but less thermal mass | Select when board space allows SMB footprint and tighter VBR tolerance is needed |
| 1.5SMC9.0A | Same VBR range, 1500 W rating, SMC (DO-214AB) package - 3× larger footprint and higher surge capacity | Overqualified for 400 W needs; suited for primary-side AC input protection where higher energy handling is mandatory | Choose only if system-level surge testing requires >1000 W capability or legacy SMC layout reuse is prioritized |
Compared with SMBJ9.0A and 1.5SMC9.0A, the TPSMA9.1HE3/61T offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 9.1 V breakdown for secondary-side automotive and industrial signal-line protection - without overdesigning package size or pulse rating.
Availability
TPSMA9.1HE3/61T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom DC power rail applications requiring stable component supply, AEC-Q101 compliance, and high-temperature reliability.
Supply support for TPSMA9.1HE3/61T 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 high-reliability, high-temperature, and automotive-qualified components.
The TPSMA9.1HE3/61T belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh environments - including under-hood automotive, industrial motor controls, and outdoor telecom infrastructure.
FAQ
What is the exact breakdown voltage specification for TPSMA9.1HE3/61T?
The TPSMA9.1HE3/61T has a guaranteed breakdown voltage (VBR) range of 8.65 V (minimum) to 9.55 V (maximum) at 1.0 mA test current, with a typical value of 9.10 V. This specification is measured per ANSI/IEEE C62.35 and confirmed in Vishay's official datasheet revision 23-Jan-2024 (Document Number: 88405). The TPSMA9.1HE3/61T maintains this tolerance across its full operating temperature range.
Is TPSMA9.1HE3/61T AEC-Q101 qualified?
Yes, the TPSMA9.1HE3/61T is AEC-Q101 qualified. As stated in the Vishay datasheet, devices with the HE3 suffix (including TPSMA9.1HE3/61T) meet AEC-Q101 stress test requirements for automotive applications. This qualification covers high-temperature operating life, temperature cycling, and ESD robustness - making the TPSMA9.1HE3/61T suitable for use in engine control units, ADAS sensors, and body electronics.
What does the "/61T" suffix mean in TPSMA9.1HE3/61T?
The "/61T" suffix in TPSMA9.1HE3/61T is a Vishay internal tape-and-reel packaging code indicating 7-inch diameter plastic tape and reel, 1800 units per reel, with standard orientation and carrier specifications. It does not affect electrical performance or qualification status - the core device remains identical to other TPSMA9.1HE3 variants. The TPSMA9.1HE3/61T shares all electrical, thermal, and reliability characteristics defined for the TPSMA9.1A family.
Can TPSMA9.1HE3/61T be used in bidirectional protection circuits?
No, the TPSMA9.1HE3/61T is unidirectional only, as explicitly stated in the Vishay datasheet. It provides clamping only for positive transients applied anode-to-cathode. For bidirectional protection (e.g., AC lines or differential buses), a separate bidirectional TVS such as SMBJ9.0CA or a back-to-back diode configuration would be required - the TPSMA9.1HE3/61T cannot substitute in those roles without circuit redesign.
What is the maximum clamping voltage of TPSMA9.1HE3/61T at its rated peak pulse current?
The maximum clamping voltage (VC) of the TPSMA9.1HE3/61T is 29.9 V at 50 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is guaranteed per the datasheet's Electrical Characteristics table and reflects worst-case clamping performance across production lots and temperature extremes - critical for ensuring protected ICs remain within absolute maximum voltage ratings during surge events.
TPSMA9.1HE3/61T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.37V
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 13.8V
- Current - Peak Pulse (10/1000µs):
- 29A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA9.1HE3/61T FAQ
1.How can I place an order for TPSMA9.1HE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA9.1HE3/61T 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 TPSMA9.1HE3/61T reliable?
The price and inventory of TPSMA9.1HE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA9.1HE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA9.1HE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA9.1HE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA9.1HE3/61T?
TPSMA9.1HE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA9.1HE3/61T 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 TPSMA9.1HE3/61T?
For technical support, including TPSMA9.1HE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA9.1HE3/61T requirements.
6.How does Aetrix verify that TPSMA9.1HE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA9.1HE3/61T 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 TPSMA9.1HE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA9.1HE3/61T?
All TPSMA9.1HE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA9.1HE3/61T, 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 TPSMA9.1HE3/61T part is unused and in its original packaging.
Return procedure for TPSMA9.1HE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA9.1HE3/61T Tags
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