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Vishay General Semiconductor - Diodes Division TPSMP12HE3/85A
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- Part No.:
- TPSMP12HE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP12HE3/85A.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,070
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Product details
Overview
TPSMP12HE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) in DO-220AA (SMP) package, with 10.8 V minimum breakdown voltage, 13.2 V maximum breakdown voltage, 17.3 A peak pulse current (10/1000 µs), 17.3 V clamping voltage at IPPM, and AEC-Q101 qualification for engine control units and sensor protection.
For engineers reviewing the TPSMP12HE3/85A datasheet, TPSMP12HE3/85A pinout, TPSMP12HE3/85A application, or TPSMP12HE3/85A equivalent, this page delivers verified electrical parameters, mechanical dimensions, automotive reliability data, and direct alternative part comparisons for robust overvoltage protection design in harsh environments.
Technical Context
The TPSMP12HE3/85A uses patented PAR oxide-passivated chip construction to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and load-dump transients per ISO 7637-2 and IEC 61000-4-2 standards. Its unidirectional configuration supports DC-biased signal and power line protection.
Designed for surface-mount automation, it features matte tin-plated leads compliant with J-STD-002 and JESD22-B102, meets MSL Level 1 (260 °C reflow), and operates across -65 °C to +185 °C junction temperature range with 2.5 W steady-state power dissipation on infinite heatsink at 75 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 10.8 V min / 13.2 V max at 1 mA - defines precise conduction onset for accurate overvoltage thresholding |
| Clamping Voltage (VC) | 17.3 V at 17.3 A (10/1000 µs) - limits downstream voltage stress during surge events |
| Peak Pulse Power (PPPM) | 300 W (10/1000 µs) - sustains high-energy transients without failure in automotive load-dump scenarios |
| Standoff Voltage (VWM) | 10.0 V - ensures no conduction during normal operation up to rated system voltage |
| Reverse Leakage (IR) | 1.0 µA max at 10.0 V - minimizes standby power loss in battery-sensitive applications |
| Junction Temperature Range | -65 °C to +185 °C - enables deployment in under-hood automotive locations with extreme thermal cycling |
Pinout & Package
DO-220AA (SMP) package: ultra-low profile (1.0 mm typical height), cathode indicated by color band, matte tin-plated leads, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected circuit ground or low-side return path |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 12 V rail, sensor output) - color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide-passivated chip | Enables stable breakdown characteristics and low dynamic impedance under repeated surge stress |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per JESD22 |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow without popcorn cracking or delamination |
| Low profile (1.0 mm height) | Reduces board stack height and improves airflow in dense engine-control modules |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in long-life automotive deployments (>15 years) |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of engine control units against ISO 7637-2 Pulse 5a (load dump) transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamps overvoltage before it reaches MCU power regulators and CAN transceivers. Use Value: Maintains system uptime by preventing latch-up or burnout of 5 V/3.3 V LDOs during cold-cranking and alternator regulation faults. |
Use Scenario: Shields analog outputs of pressure, temperature, and position sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response TVS placed at connector interface to shunt transients before reaching op-amp input stages. Use Value: Preserves sensor accuracy and prevents false fault codes by limiting voltage excursion to ≤17.3 V during ±8 kV contact ESD (IEC 61000-4-2). |
| Body Control Module (BCM) LIN Bus Protection | Automotive Infotainment Power Rail Protection |
Use Scenario: Guards LIN bus transceiver I/O pins against induced transients from nearby solenoid switching in door modules. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed between LIN driver output and connector pin. Use Value: Ensures bit-error-free communication at 19.2 kbps by clamping spikes without distorting signal edges. |
Use Scenario: Protects 5 V/12 V rails feeding display controllers and audio amplifiers in head units exposed to battery disconnect transients. IC Role / Device Role / Timing Role: High-power TVS absorbing >300 W pulses on main power input before DC-DC converters. Use Value: Prevents brownout resets and flash memory corruption during vehicle jump-start events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5AT | Higher clamping voltage (20.1 V), lower PPPM (400 W), SMA package (2.5 mm height) | Less suitable for space-constrained under-hood modules due to taller profile and reduced surge margin at 12 V rail | Select when cost sensitivity outweighs height constraints and higher clamping is acceptable |
| TPSMP12AHE3/85A | Narrower VBR range (11.4–12.6 V), tighter tolerance, same DO-220AA package and clamping (16.7 V) | Better suited for systems requiring tighter voltage threshold control, e.g., precision regulator enable inputs | Choose for improved VBR consistency where ±5 % variation is critical versus ±10 % for TPSMP12HE3/85A |
Compared with SMAJ12A-E3/5AT and TPSMP12AHE3/85A, the TPSMP12HE3/85A offers optimal balance of low profile (1.0 mm), AEC-Q101 compliance, and 17.3 V clamping-making it preferred for compact, high-reliability automotive power rail protection where board height and thermal robustness are prioritized.
Availability
TPSMP12HE3/85A is available at Aetrix Electronics and suitable for engine control units, automotive sensor interfaces, body control modules, and infotainment power systems requiring stable component supply with full automotive qualification traceability.
Supply support for TPSMP12HE3/85A 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 reliability, power handling, and automotive qualification.
The TPSMP series is engineered specifically for high-density, high-surge automotive electronics, delivering AEC-Q101-compliant transient protection in ultra-low-profile surface-mount packages for under-hood and chassis-mounted ECUs.
FAQ
What is the clamping voltage of the TPSMP12HE3/85A at its rated peak pulse current?
The TPSMP12HE3/85A has a maximum clamping voltage (VC) of 17.3 V at 17.3 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage during standardized surge events. The TPSMP12HE3/85A maintains this clamping performance across its full operating temperature range.
Is the TPSMP12HE3/85A qualified for automotive applications?
Yes, the TPSMP12HE3/85A is AEC-Q101 qualified and designated as high-reliability automotive grade (HE3 suffix). It undergoes rigorous testing for temperature cycling, humidity bias, mechanical shock, and solderability per JESD22 and J-STD-020. The TPSMP12HE3/85A is approved for use in engine control units, sensor modules, and other safety-critical automotive subsystems.
What does the 'HE3' and '/85A' suffix mean in TPSMP12HE3/85A?
The 'HE3' suffix indicates RoHS-compliant, high-reliability automotive grade with JESD201 Class 2 whisker resistance and AEC-Q101 qualification. The '/85A' denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 10,000 units. The TPSMP12HE3/85A is supplied in DO-220AA (SMP) package with matte tin-plated leads.
How does the TPSMP12HE3/85A differ from the TPSMP12AHE3/85A?
The TPSMP12HE3/85A has a broader breakdown voltage range (10.8–13.2 V), while the TPSMP12AHE3/85A specifies a tighter range (11.4–12.6 V). Both share identical package, clamping voltage (17.3 V vs. 16.7 V), and AEC-Q101 qualification. The TPSMP12HE3/85A offers greater manufacturing tolerance; the TPSMP12AHE3/85A suits designs needing stricter VBR control. Both are valid TPSMP12HE3/85A alternatives depending on threshold precision requirements.
What is the maximum operating junction temperature for the TPSMP12HE3/85A?
The TPSMP12HE3/85A has a maximum operating junction temperature (TJ max.) of +185 °C and a storage temperature range of -65 °C to +185 °C. This rating enables reliable operation in under-hood environments such as near exhaust manifolds or turbochargers. Derating curves in the datasheet (Fig. 2) define safe power limits above 25 °C ambient, supporting thermal design validation for the TPSMP12HE3/85A.
TPSMP12HE3/85A 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):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 17.3A
- 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)
TPSMP12HE3/85A FAQ
1.How can I place an order for TPSMP12HE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP12HE3/85A 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 TPSMP12HE3/85A reliable?
The price and inventory of TPSMP12HE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP12HE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP12HE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP12HE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP12HE3/85A?
TPSMP12HE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP12HE3/85A 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 TPSMP12HE3/85A?
For technical support, including TPSMP12HE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP12HE3/85A requirements.
6.How does Aetrix verify that TPSMP12HE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP12HE3/85A 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 TPSMP12HE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP12HE3/85A?
All TPSMP12HE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP12HE3/85A, 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 TPSMP12HE3/85A part is unused and in its original packaging.
Return procedure for TPSMP12HE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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