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Vishay General Semiconductor - Diodes Division TPSMP22HE3/85A
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- Part No.:
- TPSMP22HE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP22HE3/85A.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,891
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Product details
Overview
TPSMP22HE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, with 19.8 V to 24.2 V breakdown voltage (VBR), 31.9 V clamping voltage (VC) at 12.5 A peak pulse current, and 400 W peak pulse power rating for VBR ≥ 13 V. It protects sensor signal lines and drive transistors in automotive ECUs.
For engineers reviewing the TPSMP22HE3/85A datasheet, TPSMP22HE3/85A pinout, TPSMP22HE3/85A application, or TPSMP22HE3/85A equivalent, key selection criteria include AEC-Q101 qualification, 1.0 mm profile for space-constrained PCBs, low incremental surge resistance, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode uses patented PAR oxide-passivated chip construction to achieve excellent clamping capability and very fast response time (<1 ns). Its unidirectional configuration provides robust protection against positive-going transients on DC-biased lines.
Designed for automotive environments, TPSMP22HE3/85A operates across -65 °C to +185 °C junction temperature range and delivers stable performance under high-temperature derating per Fig. 2. The device meets RoHS 2002/95/EC and WEEE 2002/96/EC directives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.8 V / 24.2 V - Ensures reliable triggering above system operating voltage while avoiding false trips during normal operation. |
| VC @ IPPM | 31.9 V at 12.5 A - Limits downstream voltage stress during 10/1000 µs surge events to protect sensitive ICs. |
| PPPM | 400 W - Sustains high-energy transients common in automotive load-dump and ISO 7637-2 pulse 5a scenarios. |
| IFSM | 40 A - Withstands repetitive 10 ms half-sine surges without degradation, supporting motor driver and relay coil snubbing. |
| TJ max. | +185 °C - Enables placement near heat sources (e.g., power stages) in engine bay modules without thermal derating loss. |
| Package | DO-220AA (SMP) - 1.0 mm height enables ultra-low-profile layout; matte tin leads ensure J-STD-002 solderability. |
| AEC-Q101 | Qualified - Certified for automotive electronics per stress test requirements including HTRB, HTGB, and temperature cycling. |
Pinout & Package
TPSMP22HE3/85A is housed in a unipolar DO-220AA (SMP) surface-mount package with cathode indicated by a color band. The two-terminal device has no internal polarity reversal; anode and cathode are fixed per marking orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lower-potential rail; forms current path during reverse-biased transient clamping. |
| Cathode | Protected line input | Connected to signal/power line being protected; color band identifies this terminal for correct PCB placement. |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable VBR tolerance and long-term reliability under high-humidity and thermal cycling conditions. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning, eliminating moisture-related popcorning risk. |
| 0.024 g unit weight | Minimizes mechanical stress on fine-pitch PCB traces during vibration and thermal expansion cycles. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed automotive enclosures during fault conditions. |
| JESD201 Class 2 whisker resistance | Eliminates tin whisker growth risk over lifetime, critical for safety-critical ADAS and powertrain modules. |
Applications
| Automotive Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) Camera Interface |
|---|---|
|
Use Scenario: Protects LIN bus communication lines and injector driver outputs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between protected line and chassis ground to clamp transients before reaching MCU GPIO or driver IC inputs. Use Value: Maintains <1 µs response time and 31.9 V clamping to prevent latch-up or permanent damage to 3.3 V/5 V interface circuitry. |
Use Scenario: Shields FPD-Link III differential video signals from ESD events during camera module mating/unmating. IC Role / Device Role / Timing Role: Low-capacitance TVS on each signal line (CLK+/CLK-, DATA+/DATA-) referenced to common ground plane. Use Value: Delivers 400 W surge handling without degrading 3 Gbps signal integrity due to minimal parasitic capacitance (<100 pF). |
| Electric Power Steering (EPS) Motor Driver | Body Control Module (BCM) Sensor Inputs |
|
Use Scenario: Suppresses inductive kickback from H-bridge MOSFET switching during torque assist transitions. IC Role / Device Role / Timing Role: Placed across motor phase terminals to absorb energy from flyback currents during PWM dead-time. Use Value: Withstands 40 A IFSM and 185 °C TJ max, enabling direct integration into compact motor control PCBs near gate drivers. |
Use Scenario: Guards analog inputs from ambient light sensors, rain sensors, and door position switches against cable discharge events. IC Role / Device Role / Timing Role: Single-device protection on each sensor line, connected between signal trace and ground plane with short return path. Use Value: 1.0 mm profile allows placement directly at connector entry point without compromising board stacking height in slim BCM housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/5AT | DO-214AC (SMA) package; 22 V nominal VBR; 400 W PPPM; 1.9 mm height; not AEC-Q101 qualified. | Lacks automotive qualification and fails MSL Level 1 reflow compliance; suitable only for industrial/commercial designs. | Select when cost sensitivity outweighs automotive compliance and board height constraints allow SMA footprint. |
| TPSMP22AHE3/85A | Narrower VBR tolerance (20.9–23.1 V vs. 19.8–24.2 V); same DO-220AA package, PPPM, and AEC-Q101 status. | Better precision for systems requiring tighter clamping threshold control, e.g., 24 V CAN FD transceivers with narrow VIO margin. | Choose when design requires reduced VBR spread to avoid marginal triggering near steady-state operating voltage. |
Compared with SMAJ22A-E3/5AT and TPSMP22AHE3/85A, the TPSMP22HE3/85A offers broader VBR tolerance for relaxed system-level margining, full automotive qualification, and lowest profile-making it optimal for next-gen compact ECU and ADAS modules where height and reliability are non-negotiable.
Availability
TPSMP22HE3/85A is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera interfaces, and electric power steering systems requiring stable component supply with guaranteed AEC-Q101 conformance and long-term lifecycle support.
Supply support for TPSMP22HE3/85A 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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The TPSMP22HE3/85A belongs to Vishay's eSMP™ Series of high-power-density TVS diodes, engineered specifically for space-constrained automotive electronics needing AEC-Q101-compliant transient protection with minimal PCB footprint and height.
FAQ
What is the maximum clamping voltage of the TPSMP22HE3/85A under a 10/1000 µs surge?
The TPSMP22HE3/85A has a maximum clamping voltage (VC) of 31.9 V at 12.5 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value ensures downstream 24 V-rated ICs remain within safe operating limits during ISO 7637-2 pulse 5a load-dump events. The TPSMP22HE3/85A maintains this clamping performance across its full operating temperature range.
Is the TPSMP22HE3/85A qualified for automotive use?
Yes, the TPSMP22HE3/85A is AEC-Q101 qualified and rated for automotive applications. It undergoes rigorous stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling. The TPSMP22HE3/85A also meets RoHS 2002/95/EC and WEEE 2002/96/EC directives, confirming its suitability for modern vehicle platforms.
What does the "HE3/85A" suffix indicate in TPSMP22HE3/85A?
The "HE3" suffix denotes RoHS-compliant, high-reliability, automotive-grade construction with matte tin-plated leads meeting J-STD-002 solderability standards and JESD201 Class 2 whisker resistance. The "85A" indicates packaging in 13-inch plastic tape and reel with a base quantity of 10,000 units-optimized for high-volume SMT assembly lines.
How does the DO-220AA package of the TPSMP22HE3/85A compare to SMA (DO-214AC)?
The DO-220AA (SMP) package of the TPSMP22HE3/85A measures just 1.0 mm in height-less than half the 1.9 mm height of the SMA (DO-214AC) package. This enables significantly lower profile layouts in tight spaces like ADAS camera modules. Both packages offer comparable thermal dissipation on FR-4 PCBs, but DO-220AA achieves higher power density per unit volume.
What is the junction temperature limit for continuous operation of the TPSMP22HE3/85A?
The TPSMP22HE3/85A supports continuous operation from -65 °C to +185 °C junction temperature (TJ). Its steady-state power dissipation is rated at 2.5 W on an infinite heatsink at TA = 75 °C, with derating per Figure 6. This wide TJ range allows direct placement near power stages in engine compartment modules without external thermal management.
TPSMP22HE3/85A 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):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 12.5A
- 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-220AA (SMP)
TPSMP22HE3/85A FAQ
1.How can I place an order for TPSMP22HE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP22HE3/85A 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 TPSMP22HE3/85A reliable?
The price and inventory of TPSMP22HE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP22HE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP22HE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP22HE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP22HE3/85A?
TPSMP22HE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP22HE3/85A 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 TPSMP22HE3/85A?
For technical support, including TPSMP22HE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP22HE3/85A requirements.
6.How does Aetrix verify that TPSMP22HE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP22HE3/85A 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 TPSMP22HE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP22HE3/85A?
All TPSMP22HE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP22HE3/85A, 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 TPSMP22HE3/85A part is unused and in its original packaging.
Return procedure for TPSMP22HE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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