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Vishay General Semiconductor - Diodes Division TPSMP9.1HE3/85A
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- Part No.:
- TPSMP9.1HE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP9.1HE3/85A.pdf
- Description:
- TVS DIODE 7.37VWM 13.8VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,039
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Product details
Overview
TPSMP9.1HE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) in DO-220AA (SMP) package, with 8.19 V min / 10.0 V max breakdown voltage, 7.37 V standoff voltage, 21.7 V clamping voltage at 50 A peak pulse current, and AEC-Q101 qualification for engine control units and sensor protection.
For engineers reviewing the TPSMP9.1HE3/85A datasheet, TPSMP9.1HE3/85A pinout, TPSMP9.1HE3/85A application, or TPSMP9.1HE3/85A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, low-profile 1.0 mm height for space-constrained PCBs, RoHS-compliant matte tin terminations, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode uses Vishay's patented PAR oxide-passivated chip construction to achieve low incremental surge resistance and excellent clamping capability. It operates as a unidirectional avalanche device with fast response time and is rated for junction temperatures from –65 °C to +185 °C.
Designed for automotive electronics, the TPSMP9.1HE3/85A delivers 300 W peak pulse power (10/1000 µs), supports 40 A non-repetitive forward surge current, and maintains stable breakdown voltage with a temperature coefficient of 0.068 %/°C - critical for thermal stability in under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.19 V / 10.0 V - defines reliable avalanche initiation range under test current of 1 mA |
| VWM | 7.37 V - maximum continuous reverse working voltage before leakage exceeds 10 µA |
| VC @ IPPM | 21.7 V at 50 A - clamping voltage limits downstream IC stress during transients |
| PPPM | 300 W - peak pulse power handling per 10/1000 µs waveform on FR-4 PCB with 5.0 × 5.0 mm copper pads |
| IFSM | 40 A - withstands single half-sine surge without degradation |
| TJ max | +185 °C - enables operation in high-temperature automotive zones like powertrain modules |
Pinout & Package
DO-220AA (SMP) surface-mount package with 1.0 mm typical height, cathode indicated by color band, matte tin-plated leads solderable per J-STD-002 and JESD22-B102, and qualified to MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or lower-potential node in unidirectional clamp configuration |
| Cathode | Avalanche breakdown terminal | Marked with color band; connected to protected line (e.g., CAN_H, LIN, sensor supply) |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable avalanche behavior and low leakage (<10 µA at VWM) across temperature |
| Low profile (1.0 mm height) | Reduces board stack height and improves mechanical robustness in vibration-prone automotive assemblies |
| AEC-Q101 qualification | Validates reliability for automotive applications including powertrain, body control, and ADAS sensor interfaces |
| MSL Level 1 rating | Supports standard SMT reflow without preconditioning or dry-pack requirements |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rail in engine control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamps overvoltage spikes to safe levels before they reach MCU power pins. Use Value: Clamps to 21.7 V at 50 A, limiting stress on 3.3 V/5 V regulators and ensuring ECU functional safety compliance. | Use Scenario: Shields analog output lines of pressure, temperature, and position sensors from ESD and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Fast-response TVS absorbs sub-100 ns ESD events while maintaining signal integrity on low-voltage sensor outputs. Use Value: 7.37 V standoff allows uninterrupted operation during normal 5 V sensor bias; 21.7 V clamping prevents ADC input saturation. |
| Body Control Module (BCM) LIN Bus Protection | Infotainment System USB/UART Interface Protection |
Use Scenario: Safeguards LIN transceiver I/O pins against battery reversal and inductive switching noise in door modules. IC Role / Device Role / Timing Role: Unidirectional suppression on LIN bus line referenced to vehicle ground. Use Value: Low 1.0 mm profile fits tight BCM layouts; 0.068 %/°C VBR drift ensures consistent protection across –40 °C to +125 °C ambient. | Use Scenario: Guards UART or USB debug interfaces in head units against hot-plug transients and system-level ESD. IC Role / Device Role / Timing Role: Standoff voltage matches 3.3 V logic rails; clamps surges before reaching level-shifter or transceiver ICs. Use Value: 10 µA max leakage at 7.37 V avoids signal distortion; RoHS-compliant matte tin terminations ensure long-term solder joint reliability. |
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 | Higher VBR (9.0 V min), same DO-214AC package but 2.2 mm height - 120 % taller than TPSMP9.1HE3/85A | Not AEC-Q101 qualified; intended for industrial/commercial use only | Select when AEC-Q101 is not required and board height budget allows ≥2.2 mm |
| TPSMA9.0HE3/85A | Same manufacturer, same AEC-Q101 qualification, but DO-214AC (SMA) package - larger footprint and higher thermal mass | Lower power density: 200 W PPPM vs. 300 W for TPSMP9.1HE3/85A under identical test conditions | Choose if existing SMA footprint reuse is prioritized over space savings and surge margin |
Compared with SMAJ9.0A and TPSMA9.0HE3/85A, the TPSMP9.1HE3/85A offers superior power density (300 W in 1.0 mm height), automotive qualification, and tighter VBR tolerance - making it optimal for next-gen compact ECUs and sensor nodes where height and reliability are constrained.
Availability
TPSMP9.1HE3/85A is available at Aetrix Electronics and suitable for automotive powertrain control, sensor interface protection, and infotainment system ESD hardening requiring stable component supply and full traceability.
Supply support for TPSMP9.1HE3/85A 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 designs and manufactures discrete semiconductors, including diodes, MOSFETs, and TVS devices, with emphasis on high-reliability, automotive-qualified components.
The TPSMP series belongs to Vishay's eSMP™ family - engineered specifically for high-power-density, low-profile transient suppression in automotive electronics subject to ISO 7637-2 and ISO 10605 stress testing.
FAQ
What is the breakdown voltage range of the TPSMP9.1HE3/85A?
The TPSMP9.1HE3/85A has a specified breakdown voltage (VBR) range of 8.19 V minimum to 10.0 V maximum at 1 mA test current. This range ensures reliable avalanche initiation across process and temperature variations, and is measured per ANSI/IEEE C62.35 standards. The TPSMP9.1HE3/85A maintains this specification under automotive operating conditions from –65 °C to +185 °C junction temperature.
Is the TPSMP9.1HE3/85A suitable for automotive applications?
Yes, the TPSMP9.1HE3/85A is AEC-Q101 qualified and explicitly designed for automotive use. Its construction meets stringent reliability requirements for engine control units, body electronics, and ADAS sensors. The device is rated for operation from –65 °C to +185 °C, supports MSL Level 1 reflow, and features matte tin terminations compliant with J-STD-002 - all confirmed in Vishay document 88471 for the TPSMP9.1HE3/85A.
What is the clamping voltage of the TPSMP9.1HE3/85A at its rated peak pulse current?
The TPSMP9.1HE3/85A clamps to a maximum of 21.7 V at 50 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on a FR-4 PCB using 5.0 × 5.0 mm copper pads per terminal, as defined in the Vishay datasheet for TPSMP9.1HE3/85A. It directly limits voltage stress on downstream ICs during surge events.
Does the TPSMP9.1HE3/85A have a unidirectional or bidirectional configuration?
The TPSMP9.1HE3/85A is a unidirectional TVS diode, as clearly stated in the "FEATURES" section of the Vishay datasheet (document 88471). It functions as an avalanche diode with cathode marked by a color band and must be oriented with cathode toward the protected line and anode toward ground or lower potential - unlike bidirectional devices that protect both polarities.
What package type does the TPSMP9.1HE3/85A use, and what are its key mechanical attributes?
The TPSMP9.1HE3/85A uses the DO-220AA (SMP) surface-mount package, measuring 3.61 mm × 2.18 mm with a typical height of 1.0 mm. It features matte tin-plated leads, UL 94 V-0 molding compound, and a cathode identification band. These attributes are documented in the "MECHANICAL DATA" section of the Vishay TPSMP9.1HE3/85A datasheet revision 21-Oct-08.
TPSMP9.1HE3/85A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- 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):
- 21.7A
- Power - Peak Pulse:
- 300W
- 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-220AA (SMP)
TPSMP9.1HE3/85A FAQ
1.How can I place an order for TPSMP9.1HE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP9.1HE3/85A 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 TPSMP9.1HE3/85A reliable?
The price and inventory of TPSMP9.1HE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP9.1HE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP9.1HE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP9.1HE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP9.1HE3/85A?
TPSMP9.1HE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP9.1HE3/85A 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 TPSMP9.1HE3/85A?
For technical support, including TPSMP9.1HE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP9.1HE3/85A requirements.
6.How does Aetrix verify that TPSMP9.1HE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP9.1HE3/85A 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 TPSMP9.1HE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP9.1HE3/85A?
All TPSMP9.1HE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP9.1HE3/85A, 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 TPSMP9.1HE3/85A part is unused and in its original packaging.
Return procedure for TPSMP9.1HE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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