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Vishay General Semiconductor - Diodes Division TPSMP22HM3/85A
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- Part No.:
- TPSMP22HM3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP22HM3/85A.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,143
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Product details
Overview
TPSMP22HM3/85A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, designed for high-reliability automotive and industrial surge protection. It features 19.8 V to 24.2 V breakdown voltage (VBR), 31.9 V clamping voltage (VC) at 12.5 A peak pulse current, 400 W peak pulse power rating, and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the TPSMP22HM3/85A datasheet, TPSMP22HM3/85A pinout, TPSMP22HM3/85A application, or TPSMP22HM3/85A equivalent, key selection criteria include unidirectional polarity, 185 °C junction temperature capability, low-profile 1.0 mm height, MSL Level 1 solderability, and compliance with IEC 61000-4-2/4-5 ESD/surge immunity standards.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns). Its junction design enables stable clamping performance across -65 °C to +185 °C operating range, with thermal derating per Figure 2 and peak pulse power defined per 10/1000 μs waveform per IEC 61000-4-5.
The device operates as a shunt protector: during overvoltage events exceeding VWM = 17.8 V, it avalanches to clamp transient energy while maintaining low dynamic impedance. Its unidirectional configuration requires correct cathode orientation (marked by color band) and is not suitable for AC line or bidirectional signal protection without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.8 V / 24.2 V - Ensures reliable turn-on above normal 12 V system operating voltage while avoiding false triggering. |
| VC @ IPPM | 31.9 V at 12.5 A - Limits downstream IC voltage stress during 10/1000 μs transients per IEC 61000-4-5. |
| PPPM | 400 W - Supports robust protection against high-energy surges in automotive power nets and industrial I/O lines. |
| VWM | 17.8 V - Matches nominal 12 V supply rails with 20 % margin before avalanche conduction begins. |
| TJ max | +185 °C - Enables placement near heat sources (e.g., engine control units) without derating loss. |
| IR @ VWM | 1.0 μA - Minimizes standby leakage current in battery-sensitive applications like always-on modules. |
| Package | DO-220AA (SMP) - 1.0 mm typical height enables compact PCB layouts and automated SMT placement. |
Pinout & Package
DO-220AA (SMP) surface-mount package with cathode indicated by molded color band; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground | Completes shunt path during overvoltage; must connect to lowest-impedance ground plane available. |
| Cathode | High-side connection to protected line (e.g., 12 V rail) | Marked by color band; connects to line requiring transient suppression; determines unidirectional operation direction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock per stress test requirements. |
| Junction passivation | Reduces surface leakage and improves long-term reliability in humid or contaminated environments. |
| MSL Level 1 | Enables reflow soldering at 260 °C peak without moisture-induced popcorn failure. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a). |
| 185 °C TJ capability | Eliminates thermal derating in high-ambient environments such as engine compartments or industrial enclosures. |
Applications
| Automotive Power Net Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontrollers powered from vehicle battery (12 V ±15 %) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt TVS placed between VCC and GND to clamp transients before they reach sensitive analog/digital ICs. Use Value: Clamps 31.9 V at 12.5 A ensures downstream ICs see <32 V during ISO 7637-2 pulse 5a (load dump), preserving functional safety integrity. | Use Scenario: Safeguarding 4–20 mA current loop receivers and ADC inputs in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS on signal line input to absorb ESD strikes (IEC 61000-4-2 ±8 kV contact) and inductive kickback. Use Value: 1.0 μA leakage at 17.8 V prevents measurement error in precision current-loop circuits while enabling sub-1 ns response to fast transients. |
| Consumer Device USB Port Protection | Motor Drive Gate Driver Protection |
Use Scenario: Adding secondary surge protection on VBUS line of USB Type-A ports in set-top boxes and smart displays subjected to hot-plug transients. IC Role / Device Role / Timing Role: Secondary TVS after primary common-mode choke, placed directly at connector to minimize trace inductance. Use Value: 1.0 mm profile allows placement within tight USB connector keep-out zones while delivering 400 W peak pulse handling per IEC 61000-4-5. | Use Scenario: Protecting high-side gate driver ICs in BLDC motor controllers from Miller-induced voltage spikes during MOSFET switching. IC Role / Device Role / Timing Role: Clamp diode connected between gate driver output and local ground to suppress dv/dt-induced false turn-on. Use Value: 31.9 V clamping voltage limits gate-source voltage excursion below MOSFET VGS(max), preventing unintended conduction and shoot-through risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/61 | DO-214AC (SMA) package; 22 V nominal VBR; 400 W PPPM; same unidirectional polarity and AEC-Q101 grade. | 0.23 mm taller (2.3 mm vs. 1.0 mm); less suitable for ultra-low-profile designs or dense PCB layouts. | Select when existing SMA footprint exists or when higher thermal mass is needed for repeated surge events. |
| TPSMA6.8A-Q | Same DO-220AA package; lower VBR (6.45–7.14 V); 300 W PPPM; AEC-Q101 qualified. | Designed for 5 V logic rail protection; insufficient clamping margin for 12 V systems. | Choose only for 3.3 V or 5 V signal-line protection where lower VBR and reduced PPPM are acceptable. |
Compared with SMAJ22A-E3/61 and TPSMA6.8A-Q, the TPSMP22HM3/85A delivers identical surge robustness in a 57 % lower profile package, enabling placement in space-constrained automotive modules while maintaining full AEC-Q101 compliance and 185 °C operation-critical for engine control and ADAS domain controllers.
Availability
TPSMP22HM3/85A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB power delivery systems, and motor drive gate protection requiring stable component supply and long-term lifecycle support.
Supply support for TPSMP22HM3/85A 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade qualification.
The TPSMP series belongs to Vishay's high-power-density PAR® TVS family, engineered specifically for automotive and industrial applications demanding AEC-Q101 compliance, 185 °C operation, and ultra-low-profile packaging.
FAQ
What is the maximum clamping voltage of the TPSMP22HM3/85A under standard test conditions?
The TPSMP22HM3/85A has a maximum clamping voltage (VC) of 31.9 V at 12.5 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ensures predictable voltage limiting during surge events. The clamping performance remains stable across its full operating temperature range up to +185 °C, making it suitable for under-hood automotive deployment where thermal stability is critical. The TPSMP22HM3/85A achieves this with low dynamic impedance due to its passivated anisotropic rectifier structure.
Is the TPSMP22HM3/85A suitable for bidirectional transient protection?
No, the TPSMP22HM3/85A is a unidirectional TVS diode and is not suitable for bidirectional protection. Its electrical characteristics-including breakdown voltage, clamping behavior, and polarity marking-are specified only for reverse-biased operation (cathode positive relative to anode). For AC or bidirectional signal lines, a dedicated bidirectional TVS such as the TPSMD22AHM3/85A would be required. Using the TPSMP22HM3/85A in reverse polarity risks permanent damage or failure to clamp during positive transients. Always observe the cathode band marking during PCB layout.
Does the TPSMP22HM3/85A meet automotive qualification standards?
Yes, the TPSMP22HM3/85A is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, meeting stringent automotive reliability requirements. It passes stress tests including temperature cycling, high-temperature operating life, and mechanical shock per AEC-Q101 Rev D. The device also complies with MSL Level 1 per J-STD-020, allowing lead-free reflow at 260 °C peak without moisture sensitivity concerns. These qualifications make the TPSMP22HM3/85A appropriate for engine control units, body electronics, and ADAS modules where long-term field reliability is mandatory.
What is the standoff voltage (VWM) of the TPSMP22HM3/85A and why does it matter?
The TPSMP22HM3/85A has a maximum standoff voltage (VWM) of 17.8 V, meaning it remains non-conductive up to this reverse voltage level at 25 °C. This parameter ensures compatibility with nominal 12 V automotive systems while providing sufficient margin above typical operating voltage (e.g., 13.5–14.5 V during charging) to prevent leakage or false triggering. At 17.8 V, reverse leakage is limited to just 1.0 μA, minimizing power loss in always-on circuits. Exceeding VWM initiates avalanche conduction, so proper system-level voltage tolerance analysis must confirm that normal operation stays safely below this threshold.
How does the DO-220AA (SMP) package of the TPSMP22HM3/85A benefit PCB design?
The DO-220AA (SMP) package of the TPSMP22HM3/85A provides a typical height of only 1.0 mm, enabling ultra-low-profile placement in space-constrained modules such as automotive radar assemblies or slim consumer displays. Its compact footprint supports high-density routing and reduces parasitic inductance compared to larger packages like DO-214AC. The matte tin-plated leads ensure robust solder joint formation per J-STD-002, and the MSL Level 1 rating eliminates pre-bake requirements. This combination makes the TPSMP22HM3/85A ideal for automated SMT assembly lines targeting automotive Tier-1 production volumes.
TPSMP22HM3/85A 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)
TPSMP22HM3/85A FAQ
1.How can I place an order for TPSMP22HM3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP22HM3/85A 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 TPSMP22HM3/85A reliable?
The price and inventory of TPSMP22HM3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP22HM3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP22HM3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP22HM3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP22HM3/85A?
TPSMP22HM3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP22HM3/85A 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 TPSMP22HM3/85A?
For technical support, including TPSMP22HM3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP22HM3/85A requirements.
6.How does Aetrix verify that TPSMP22HM3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP22HM3/85A 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 TPSMP22HM3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP22HM3/85A?
All TPSMP22HM3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP22HM3/85A, 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 TPSMP22HM3/85A part is unused and in its original packaging.
Return procedure for TPSMP22HM3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP22HM3/85A Tags
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