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Vishay General Semiconductor - Diodes Division TPSMP20AHM3_A/H
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- Part No.:
- TPSMP20AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP20AHM3_A/H.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,689
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Product details
Overview
TPSMP20AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the eSMP® Series, designed for high-reliability automotive and industrial overvoltage protection. It features a 19.0–21.0 V breakdown voltage (VBR), 17.1 V stand-off voltage (VWM), 27.7 V clamping voltage (VC) at 14.4 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the TPSMP20AHM3_A/H datasheet, TPSMP20AHM3_A/H pinout, TPSMP20AHM3_A/H application, or TPSMP20AHM3_A/H equivalent, this page delivers verified electrical specs, SMP (DO-220AA) package details, automotive-grade thermal performance (TJ = –65 °C to +185 °C), and real-world protection use cases for sensor interfaces, power rails, and signal lines.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with junction passivation optimized for low incremental surge resistance and fast response time (<1 ns). Its unidirectional configuration provides robust clamping during positive transients while maintaining low leakage (≤1 µA at VWM) and stable temperature coefficient (0.090 %/°C).
Rated for 185 °C maximum junction temperature and MSL Level 1 (260 °C reflow), the device supports automated SMT placement on FR-4 PCBs with 5.0 mm × 5.0 mm copper pads per terminal. It meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - ensures reliable triggering above system operating voltage with tight tolerance |
| VWM | 17.1 V - defines maximum continuous reverse voltage before leakage exceeds 1 µA |
| VC @ IPPM | 27.7 V @ 14.4 A - limits protected circuit voltage during 10/1000 µs surge events |
| PPPM | 400 W - sustains high-energy transients common in automotive load-dump and ISO 7637-2 pulses |
| TJ max. | +185 °C - enables operation in under-hood environments without derating |
| Package | SMP (DO-220AA) - ultra-low profile (1.0 mm height), halogen-free, RoHS-compliant, AEC-Q101 qualified |
| Polarity | Unidirectional - cathode marked by band; suitable for DC rail and single-polarity signal line protection |
Pinout & Package
The TPSMP20AHM3_A/H is housed in the SMP (DO-220AA) surface-mount package: a compact, low-profile case with matte tin-plated leads, UL 94 V-0 molding compound, and cathode indicated by a color band. Dimensions: 3.61 mm × 2.18 mm × 1.0 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential node in unidirectional clamp configuration |
| Cathode | Current exit point during forward conduction; marked by band | Connected to protected line (e.g., 12 V rail or sensor output) to shunt surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Reduces surface leakage and improves long-term reliability in humid/high-bias automotive environments |
| MSL Level 1 rating | Enables single-reflow assembly at 260 °C peak without moisture-induced damage |
| AEC-Q101 qualification | Validates performance across temperature cycling, HTRB, and ESD stress for automotive ECUs and sensors |
| Low profile (1.0 mm height) | Minimizes board space and enables placement near connectors or ICs requiring localized protection |
| Very fast response time | Clamps transients within sub-nanosecond, protecting sensitive CMOS inputs and microcontrollers |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting analog outputs of pressure, temperature, or position sensors in engine control modules exposed to ISO 7637-2 pulse 1 and pulse 2b. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor VOUT and ground to clamp negative-going transients and limit positive overshoot to ≤27.7 V. Use Value: Prevents latch-up or gate oxide damage in downstream ADCs or op-amps by limiting voltage excursion below absolute maximum ratings. | Use Scenario: Safeguarding 12 V or 24 V supply rails in programmable logic controllers (PLCs) subject to inductive switching surges and lightning-induced coupling. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing up to 400 W of transient energy to maintain rail stability during relay coil de-energization. Use Value: Eliminates need for bulkier MOV-based solutions while meeting IEC 61000-4-5 Level 3 (1 kV/2 Ω) immunity requirements. |
| Consumer USB Port Protection | Automotive Infotainment Data Lines |
Use Scenario: Guarding VBUS and D+/D− lines in automotive-grade USB 2.0 ports against ESD and hot-swap transients. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed inline with data lines to suppress ±15 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with minimal rise-time degradation due to controlled clamping and low dynamic impedance. | Use Scenario: Protecting LVDS or CAN FD signal pairs in head unit displays and digital instrument clusters from battery dump and alternator ripple. IC Role / Device Role / Timing Role: Dual-channel layout using two TPSMP20AHM3_A/H devices-one per differential line-referenced to chassis ground. Use Value: Ensures uninterrupted video transmission and protocol compliance by holding differential swing within receiver common-mode range during transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Higher VC (32.4 V @ 12.3 A), lower PPPM (400 W same but lower IPPM), SMA package (2.5 mm height) | Less suitable for space-constrained automotive modules; higher clamping increases risk to 24 V logic interfaces | Select only if board height > 2.0 mm and thermal margin allows larger footprint |
| TPSMA6.8A | Same family but lower VBR (6.45–7.14 V); incompatible for 12 V+ systems requiring ≥19 V standoff | Designed for 5 V logic rails-not applicable for TPSMP20AHM3_A/H's 17.1 V VWM use case | Not interchangeable; verify VWM and VBR match system operating voltage before substitution |
Compared with SMAJ20A and TPSMA6.8A, the TPSMP20AHM3_A/H offers superior height efficiency (1.0 mm vs. 2.5 mm), tighter VBR tolerance (±5.3 %), and guaranteed AEC-Q101 qualification-making it the preferred choice for next-generation automotive electronics where board space, thermal resilience, and qualification rigor are critical.
Availability
TPSMP20AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC power rails, consumer USB port protection, and infotainment data line clamping requiring stable component supply, AEC-Q101 traceability, and consistent DO-220AA packaging.
Supply support for TPSMP20AHM3_A/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and automotive-grade qualification.
The eSMP® Series-including TPSMP20AHM3_A/H-is engineered specifically for high-power-density transient suppression in space-constrained, thermally demanding environments such as automotive engine control units, ADAS modules, and industrial motor drives.
FAQ
What is the clamping voltage of the TPSMP20AHM3_A/H at its rated peak pulse current?
The TPSMP20AHM3_A/H has a maximum clamping voltage (VC) of 27.7 V when subjected to its specified peak pulse current (IPPM) of 14.4 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuits remain within safe operating limits during surge events. The TPSMP20AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the TPSMP20AHM3_A/H suitable for automotive applications?
Yes, the TPSMP20AHM3_A/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and body-control module applications. Its SMP (DO-220AA) package meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow requirements. The TPSMP20AHM3_A/H is explicitly listed in Vishay's automotive-grade product portfolio for ISO 7637-2 and IEC 61000-4-5 compliant designs.
What does the "HM3_A/H" suffix indicate in TPSMP20AHM3_A/H?
The "HM3" denotes the halogen-free, RoHS-compliant, AEC-Q101 qualified SMP package variant; "A" is the revision code; "H" specifies the preferred packaging format: 7-inch plastic tape and reel with 3000 units per reel. This ordering code ensures traceable, automotive-grade material flow and matches Vishay's documented preferred part number structure for the TPSMP20AHM3_A/H.
How does the TPSMP20AHM3_A/H compare to standard SMA-package TVS diodes in terms of board space?
The TPSMP20AHM3_A/H uses the SMP (DO-220AA) package, which measures 3.61 mm × 2.18 mm × 1.0 mm-approximately 50 % lower in height than standard SMA packages (typically 2.3–2.5 mm tall). This reduction enables placement directly adjacent to connectors or ICs without interference, and supports denser layouts in automotive ECUs where Z-axis clearance is constrained. The TPSMP20AHM3_A/H achieves this without sacrificing power handling (400 W PPPM).
Does the TPSMP20AHM3_A/H have bidirectional capability?
No, the TPSMP20AHM3_A/H is a unidirectional TVS diode, as confirmed in the Vishay datasheet's FEATURES section ("Unidirection only") and ELECTRICAL CHARACTERISTICS table (no reverse breakdown specification). It must be oriented with the cathode band toward the protected line to function correctly. For bidirectional protection, a separate device such as the TPSMP20CA would be required-but that is a distinct part number not equivalent to the TPSMP20AHM3_A/H.
TPSMP20AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- 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)
TPSMP20AHM3_A/H FAQ
1.How can I place an order for TPSMP20AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP20AHM3_A/H 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 TPSMP20AHM3_A/H reliable?
The price and inventory of TPSMP20AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP20AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMP20AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP20AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP20AHM3_A/H?
TPSMP20AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP20AHM3_A/H 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 TPSMP20AHM3_A/H?
For technical support, including TPSMP20AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP20AHM3_A/H requirements.
6.How does Aetrix verify that TPSMP20AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMP20AHM3_A/H 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 TPSMP20AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMP20AHM3_A/H?
All TPSMP20AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP20AHM3_A/H, 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 TPSMP20AHM3_A/H part is unused and in its original packaging.
Return procedure for TPSMP20AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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