My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMP20AHM3_A/I
~~2.jpg)
- Part No.:
- TPSMP20AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP20AHM3_A/I.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,322
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMP20AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the PAR® family, designed for high-reliability automotive and industrial overvoltage protection. It features a 19.0 V to 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/I datasheet, TPSMP20AHM3_A/I pinout, TPSMP20AHM3_A/I application, or TPSMP20AHM3_A/I equivalent, this page delivers verified electrical specs, SMP (DO-220AA) package dimensions, automotive-grade thermal performance (TJ = 185 °C), and real-world protection use cases - all confirmed from Vishay's official 88471 document.
Technical Context
The TPSMP20AHM3_A/I employs passivated anisotropic rectifier technology with junction passivation optimized for low leakage and stable VBR drift. Its unidirectional architecture provides fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD and lightning-induced transients.
Rated for 185 °C maximum junction temperature and MSL Level 1 (260 °C reflow), it supports automated SMT placement on FR-4 PCBs with 5.0 mm × 5.0 mm copper pads per terminal. The device operates within -65 °C to +185 °C storage and junction range, meeting stringent automotive reliability 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 while avoiding false trips during normal operation. |
| VWM | 17.1 V - Maximum continuous reverse voltage before leakage exceeds 1 μA; matches 12 V automotive supply rails with margin. |
| VC @ IPPM | 27.7 V - Clamped voltage during 14.4 A 10/1000 µs surge; protects downstream ICs rated ≤30 V absolute maximum. |
| PPPM | 400 W - Peak pulse power handling for TPSMP20A variant; enables robust protection against ISO 7637-2 Pulse 1/2a/5a events. |
| IFSM | 40 A - Non-repetitive forward surge rating; withstands inrush currents during hot-swap or load-dump conditions. |
| TJ max | 185 °C - Enables operation in engine control units, ADAS modules, and other high-temperature automotive zones. |
| Package | SMP (DO-220AA) - Ultra-low profile (1.0 mm typical height); compatible with space-constrained layouts and high-density PCBs. |
Pinout & Package
TPSMP20AHM3_A/I uses the SMP (DO-220AA) surface-mount package: cathode-indicating color band, matte tin-plated terminals, UL 94 V-0 molding compound, and JESD 201 Class 2 whisker resistance. 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 protected line (e.g., CAN_H, LIN, sensor output); forms low-impedance path to ground during overvoltage. |
| Cathode | Current exit point during forward conduction | Connected to system ground; polarity band identifies this terminal; critical for correct orientation in unidirectional TVS layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain, body electronics, and ADAS; supports PPAP documentation. |
| Junction passivation | Reduces long-term parameter drift and leakage increase under thermal stress, improving field reliability over 15+ year lifetimes. |
| MSL Level 1 (260 °C) | Enables single-pass lead-free reflow without moisture-related popcorning; eliminates pre-bake requirement in production. |
| Low profile (1.0 mm height) | Minimizes board-level Z-height impact in stacked modules (e.g., radar sensors, camera ECUs) and thin-profile connectors. |
| Unidirectional configuration | Provides asymmetric clamping ideal for DC-biased signal lines (e.g., LIN bus, analog sensor outputs) without affecting normal bias. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting analog output pins of pressure, temperature, or position sensors in engine compartments exposed to load dump and ISO 7637-2 transients. IC Role / Device Role: Unidirectional TVS placed between sensor output and MCU ADC input, referenced to chassis ground. Use Value: Clamps transients to ≤27.7 V while maintaining <1 μA leakage at 17.1 V, preserving sensor accuracy and preventing ADC saturation. |
Use Scenario: Safeguarding CAN_H/CAN_L lines in industrial PLC I/O modules subject to EFT bursts and cable discharge events. IC Role / Device Role: Paired unidirectional TVS devices (one per line) mounted at connector entry point with short trace routing. Use Value: 400 W pulse rating and 14.4 A IPPM capability suppress 4 kV ESD (IEC 61000-4-2) without degradation across >100,000 cycles. |
| Consumer Power Adapter Input | Medical Equipment Signal Conditioning |
|
Use Scenario: Secondary-side overvoltage protection in 12 V wall adapters used in smart home hubs and IoT gateways. IC Role / Device Role: Standoff-rated TVS across regulated 12 V output rail to absorb switching spikes from internal DC/DC converters. Use Value: 17.1 V VWM ensures no conduction during nominal operation; 27.7 V VC prevents damage to connected USB-PD controllers or PMICs. |
Use Scenario: Shielding precision analog front-ends (e.g., ECG, EEG amplifiers) from ESD coupling via patient cables or touch interfaces. IC Role / Device Role: Low-capacitance TVS on differential sensor inputs prior to instrumentation amplifier stage. Use Value: Sub-100 pF junction capacitance (per Vishay curve Fig. 4) avoids signal integrity loss at ≤10 kHz biopotential bandwidths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Lower PPPM (400 W → 400 W same), but higher VC (32.4 V vs. 27.7 V); SMA package (2.5 mm height) vs. SMP (1.0 mm). | Less suitable for ultra-thin automotive modules; acceptable for industrial PCBs with ≥2.5 mm clearance. | Select SMAJ20A only when board height allows and clamping voltage margin permits higher VC. |
| TPSMA6.8A | Same SMP package, but lower VBR (6.45–7.14 V); PPPM = 250 W; not AEC-Q101 qualified. | Intended for consumer/industrial 5 V systems; lacks automotive qualification and thermal derating headroom. | Choose TPSMA6.8A only for non-automotive 5 V logic protection where AEC-Q101 and 185 °C operation are unnecessary. |
Compared with SMAJ20A and TPSMA6.8A, the TPSMP20AHM3_A/I delivers superior automotive readiness (AEC-Q101 + 185 °C), tighter clamping (27.7 V), and space savings (1.0 mm height), making it the optimal choice for next-generation vehicle ECUs and compact medical sensors requiring certified reliability.
Availability
TPSMP20AHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and medical signal conditioning requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMP20AHM3_A/I 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, optoelectronics, and passive components for automotive, industrial, and computing markets.
The TPSMP series belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh-environment automotive electronics.
FAQ
What is the clamping voltage of the TPSMP20AHM3_A/I at its rated peak pulse current?
The TPSMP20AHM3_A/I 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 Figure 1 and Table on page 2 of Vishay document 88471 and ensures downstream 30 V-rated ICs remain within safe operating limits during surge events. The TPSMP20AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is the TPSMP20AHM3_A/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the TPSMP20AHM3_A/I is explicitly AEC-Q101 qualified, as confirmed in the "FEATURES" section of Vishay document 88471. It is rated for junction temperatures up to 185 °C and meets MSL Level 1 reflow requirements - both essential for under-hood and ADAS applications. The "HM3" suffix denotes halogen-free, RoHS-compliant construction validated to automotive reliability standards, making the TPSMP20AHM3_A/I appropriate for safety-critical vehicle subsystems.
What package type does the TPSMP20AHM3_A/I use, and what are its key mechanical attributes?
The TPSMP20AHM3_A/I uses the SMP (DO-220AA) package: a surface-mount, ultra-low-profile case measuring 3.61 mm × 2.18 mm × 1.0 mm (L × W × H). It features matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102, a cathode-indicating color band, UL 94 V-0 flammability rating, and JESD 201 Class 2 whisker resistance. Its 1.0 mm typical height enables use in space-constrained automotive modules where Z-axis clearance is limited.
How does the TPSMP20AHM3_A/I compare to the TPSMP20A without the HM3 suffix?
The TPSMP20AHM3_A/I differs from base TPSMP20A by its HM3 suffix, which specifies halogen-free, RoHS-compliant, AEC-Q101-qualified construction with JESD 201 Class 2 whisker resistance and matte tin plating. The "A/I" denotes 13-inch tape-and-reel packaging (10,000 units). Electrically and thermally, the TPSMP20AHM3_A/I matches the TPSMP20A specification sheet - all VBR, VC, PPPM, and TJ values are identical - but adds automotive-grade material and process controls required for Tier 1 supply chains.
What is the maximum reverse leakage current of the TPSMP20AHM3_A/I at its stand-off voltage?
At its 17.1 V stand-off voltage (VWM) and ambient temperature of 25 °C, the TPSMP20AHM3_A/I exhibits a maximum reverse leakage current (IR) of 1.0 μA, as specified in Table "ELECTRICAL CHARACTERISTICS" on page 2 of Vishay document 88471. At elevated junction temperature (150 °C), leakage increases to ≤5.0 μA - a controlled, predictable behavior critical for maintaining signal integrity in always-on automotive modules powered from battery rails.
TPSMP20AHM3_A/I 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/I FAQ
1.How can I place an order for TPSMP20AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP20AHM3_A/I 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/I reliable?
The price and inventory of TPSMP20AHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for TPSMP20AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP20AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP20AHM3_A/I?
TPSMP20AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP20AHM3_A/I 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/I?
For technical support, including TPSMP20AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP20AHM3_A/I requirements.
6.How does Aetrix verify that TPSMP20AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMP20AHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of TPSMP20AHM3_A/I?
All TPSMP20AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP20AHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for TPSMP20AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP20AHM3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
