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Vishay General Semiconductor - Diodes Division TPSMA9.1HE3_A/I
- Part No.:
- TPSMA9.1HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA9.1HE3_A/I.pdf
- Description:
- TVS DIODE 7.37VWM 13.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,678
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Product details
Overview
TPSMA9.1HE3_A/I 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 a 9.1 V nominal breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 29.9 V maximum 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_A/I datasheet, TPSMA9.1HE3_A/I pinout, TPSMA9.1HE3_A/I application, or TPSMA9.1HE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1.0 μA max reverse leakage at VWM, MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly using matte tin-plated leads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction design enables reliable operation under repetitive 10/1000 μs transients up to 400 W while maintaining tight VBR tolerance (±5%) and low clamping ratio (VC/VBR ≈ 3.29).
The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 3.5 V max forward voltage at 25 A, and supports operating junction temperatures from –65 °C to +185 °C - meeting automotive-grade reliability requirements per AEC-Q101 when ordered with HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V - ensures precise overvoltage triggering within ±5% of nominal rating at 1.0 mA test current |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 29.9 V at 50 A - clamps induced surges to safe levels for downstream ICs like microcontrollers or CAN transceivers |
| PPPM | 400 W (10/1000 μs) - handles typical lightning-induced or inductive-switching transients without failure |
| TJ max | +185 °C - supports under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; compatible with standard reflow profiles up to 260 °C peak |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with 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 during forward conduction or transient clamping | Connected to protected line (e.g., 12 V rail or sensor output); must be routed with low-inductance trace |
| Cathode | Current exit during clamping; reference node for breakdown threshold | Connected to ground or lower-potential return path; polarity marking critical for correct installation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure improves long-term reliability under thermal cycling and humidity exposure |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Low clamping ratio | VC/VBR = 3.29 enables tighter system-level overvoltage margin vs. legacy TVS devices |
| High surge current capability | 50 A peak pulse current (IPPM) supports IEC 61000-4-5 Level 4 compliance with proper PCB layout |
| Halogen-free option | HM3 suffix variant available; HE3 variant is RoHS-compliant and AEC-Q101 qualified |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between sensor signal line and chassis ground to clamp spikes below IC damage threshold. Use Value: Enables robust operation at TJ = 150 °C ambient with <1.0 μA leakage at 7.78 V, preserving sensor accuracy. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subjected to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS shunting fast-rising transients (<1 ns rise time) before they reach input buffer ICs. Use Value: 29.9 V clamping voltage ensures input stage remains below absolute maximum ratings of 30 V tolerant receivers. |
| Telecom Power Rail Protection | Consumer USB Port Surge Suppression |
Use Scenario: Guarding 48 V DC power inputs of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping device on secondary-side DC bus, coordinated with upstream MOVs and fuses. Use Value: 400 W peak pulse rating sustains multiple 10/1000 μs events per IEC 61000-4-5 without degradation. | Use Scenario: Adding secondary-level surge immunity to USB 2.0 data lines (D+/D−) in portable media players connected to wall adapters. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. 100 pF at 0 V) limiting ESD strikes to <15 kV contact discharge per IEC 61000-4-2. Use Value: Fast response time (<1 ns) prevents latch-up in USB transceivers while maintaining signal integrity up to 480 Mbps. |
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 | 9.0 V nominal VBR, same SMA package, 400 W PPPM, but not AEC-Q101 qualified | Limited to commercial/industrial use; lacks automotive qualification and high-TJ validation | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| 1.5SMC9.0A | Same VBR and PPPM, but larger SMC (DO-214AB) package with higher thermal mass and 1.5 kW rating | Used where board space allows larger footprint and higher single-pulse energy handling is needed | Choose for higher surge endurance in non-SMT-constrained designs or legacy SMC-compatible layouts |
Compared with SMAJ9.0A and 1.5SMC9.0A, the TPSMA9.1HE3_A/I provides AEC-Q101 qualification and +185 °C operation in the compact SMA footprint - making it optimal for space-constrained automotive and high-reliability industrial applications where qualification and thermal margin are mandatory.
Availability
TPSMA9.1HE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power supply protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMA9.1HE3_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 optoelectronics with emphasis on reliability and application-specific performance.
The TPSMA9.1HE3_A/I belongs to Vishay's PAR® series of high-temperature, high-reliability TVS diodes - engineered specifically for automotive, industrial, and telecom systems demanding AEC-Q101 compliance and extended junction temperature operation.
FAQ
What is the exact breakdown voltage tolerance for TPSMA9.1HE3_A/I?
The TPSMA9.1HE3_A/I has a specified breakdown voltage (VBR) range of 8.65 V to 9.55 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 9.1 V rating. This tight tolerance is confirmed in the Electrical Characteristics table of Vishay document 88405 and ensures consistent clamping behavior across production lots. The TPSMA9.1HE3_A/I maintains this specification under standard test conditions (TA = 25 °C) and is validated per JEDEC standards.
Is TPSMA9.1HE3_A/I qualified to AEC-Q101?
Yes, the TPSMA9.1HE3_A/I is AEC-Q101 qualified, as explicitly stated in the "FEATURES" section and "ORDERING INFORMATION" of Vishay document 88405. The HE3 suffix denotes RoHS-compliance and AEC-Q101 qualification, and the device is tested for high-temperature operation up to +185 °C junction temperature - a core requirement of the AEC-Q101 stress test profile. This makes the TPSMA9.1HE3_A/I suitable for automotive powertrain and body electronics applications.
What is the maximum clamping voltage of TPSMA9.1HE3_A/I and at what current is it measured?
The maximum clamping voltage (VC) of the TPSMA9.1HE3_A/I is 29.9 V, measured at a peak pulse current (IPPM) of 50 A using the standard 10/1000 μs waveform. This value is guaranteed across the operating temperature range and reflects worst-case clamping performance under surge conditions. The TPSMA9.1HE3_A/I achieves this with low dynamic impedance, enabling effective protection of downstream components such as microcontrollers or communication ICs rated for ≤30 V absolute maximum.
Does TPSMA9.1HE3_A/I have moisture sensitivity level (MSL) rating?
Yes, the TPSMA9.1HE3_A/I meets MSL Level 1 per J-STD-020, with a maximum lead-free reflow peak temperature of 260 °C. This means the device has no floor life limitation and can be stored indefinitely at ambient conditions without baking prior to assembly. The MSL Level 1 rating is confirmed in the "MECHANICAL DATA" section of Vishay document 88405 and applies to both HE3 and HM3 variants of the TPSMA family.
What is the reverse leakage current of TPSMA9.1HE3_A/I at its stand-off voltage?
The TPSMA9.1HE3_A/I exhibits a maximum reverse leakage current (IR) of 1.0 μA at its stand-off voltage (VWM) of 7.78 V and ambient temperature of 25 °C. At elevated temperature (TJ = 150 °C), leakage increases to ≤10 μA - still well within acceptable limits for low-power sensor and interface circuits. This low leakage preserves system efficiency and avoids false triggering in precision analog applications using the TPSMA9.1HE3_A/I.
TPSMA9.1HE3_A/I 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_A/I FAQ
1.How can I place an order for TPSMA9.1HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA9.1HE3_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 TPSMA9.1HE3_A/I reliable?
The price and inventory of TPSMA9.1HE3_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 TPSMA9.1HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA9.1HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA9.1HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA9.1HE3_A/I?
TPSMA9.1HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA9.1HE3_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 TPSMA9.1HE3_A/I?
For technical support, including TPSMA9.1HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA9.1HE3_A/I requirements.
6.How does Aetrix verify that TPSMA9.1HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA9.1HE3_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 TPSMA9.1HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA9.1HE3_A/I?
All TPSMA9.1HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA9.1HE3_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 TPSMA9.1HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA9.1HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA9.1HE3_A/I Tags
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