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Vishay General Semiconductor - Diodes Division TPSMP24AHM3_A/I
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- Part No.:
- TPSMP24AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP24AHM3_A/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
TPSMP24AHM3_A/I 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 breakdown voltage of 22.8–25.2 V, 400 W peak pulse power (10/1000 µs), 12.0 A peak pulse current, 20.5 V stand-off voltage, and operates up to +185 °C junction temperature - deployed on signal lines and power rails of engine control units and ADAS sensors.
For engineers reviewing the TPSMP24AHM3_A/I datasheet, TPSMP24AHM3_A/I pinout, TPSMP24AHM3_A/I application, or TPSMP24AHM3_A/I equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, SMP (DO-220AA) package dimensions, clamping behavior at 12.0 A, and direct alternatives for board-level ESD/surge protection design.
Technical Context
The TPSMP24AHM3_A/I uses 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 clamping during 10/1000 µs transients without thermal runaway.
Rated for TJ = –65 °C to +185 °C and qualified to AEC-Q101, it supports automotive under-hood applications where thermal cycling and high ambient temperatures demand robust surge immunity. The device is mounted on FR-4 PCBs using 5.0 mm × 5.0 mm copper pads per terminal per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V - defines precise breakdown threshold at 1 mA test current; ensures reliable triggering before downstream IC damage. |
| VWM | 20.5 V - maximum continuous reverse operating voltage; sets safe margin below VBR for nominal system rail operation. |
| PPPM | 400 W - peak pulse power handling (10/1000 µs waveform); sustains high-energy surges common in automotive load-dump events. |
| IPPM | 12.0 A - peak pulse current at clamping; determines minimum trace width and PCB layout for transient current path. |
| VC @ IPPM | 33.2 V - clamping voltage at 12.0 A; limits voltage seen by protected IC to safe level during surge. |
| TJ max. | +185 °C - enables placement near heat sources (e.g., power modules) without derating concerns in engine bay designs. |
| Package | SMP (DO-220AA) - ultra-low profile (1.0 mm height), halogen-free, RoHS-compliant, MSL Level 1, JESD201 Class 2 whisker tested. |
Pinout & Package
TPSMP24AHM3_A/I is a two-terminal unidirectional TVS diode in the SMP (DO-220AA) surface-mount package. Cathode is marked by a color band; anode is unmarked. The device has no internal circuitry requiring multi-pin routing - terminals serve solely as surge-current input (cathode) and return (anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts transient energy to ground when VBR exceeded - polarity must match system grounding scheme. |
| Anode | Reference/return node | Typically tied to system ground or low-impedance return path; forms clamping loop with cathode - requires low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for ECU, infotainment, and ADAS deployment. |
| Junction passivation | Reduces surface leakage and improves long-term stability of VBR under high-humidity or contaminated environments. |
| Low profile (1.0 mm height) | Enables use in space-constrained modules such as radar front-ends and camera control units where Z-height is tightly budgeted. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning - eliminates moisture-related popcorning risk during SMT assembly. |
| Unidirectional configuration | Provides lower clamping voltage than bidirectional equivalents at same VWM, ideal for DC-biased signal/power lines with defined polarity. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIOs and CAN transceiver pins from load dump and ISO 7637-2 pulses on 12 V battery-supplied circuits. IC Role / Device Role: Primary transient clamp on power and signal inputs upstream of LDOs and interface ICs. Use Value: Clamps to 33.2 V at 12.0 A while maintaining 20.5 V stand-off - prevents latch-up and gate oxide damage in 3.3 V/5 V logic. |
Use Scenario: Shields 24 V digital input optocouplers from field-wiring induced surges and inductive kickback in factory automation systems. IC Role / Device Role: Front-end surge suppression on dry-contact inputs before signal conditioning and isolation stages. Use Value: Withstands 400 W pulses and operates up to +185 °C - survives repeated switching of solenoid loads in hot control cabinets. |
| ADAS Camera Power Rail | Consumer IoT Gateway Ethernet Port |
Use Scenario: Guards 5 V or 12 V power supply to image sensor and ISP in automotive surround-view cameras exposed to ESD and conducted noise. IC Role / Device Role: Secondary overvoltage protection after primary fuse and LC filter - handles fast transients missed by bulk filtering. Use Value: 1.0 mm height allows integration directly on compact camera PCBs; AEC-Q101 ensures compliance with OEM qualification requirements. |
Use Scenario: Provides secondary surge protection on PoE-powered Ethernet PHY power rails (3.3 V/5 V) in smart home hubs and edge gateways. IC Role / Device Role: Low-capacitance TVS placed between DC-DC output and PHY VDD pins to suppress EFT and lightning-induced spikes. Use Value: Unidirectional structure avoids forward conduction during normal operation; 20.5 V VWM accommodates 5 V rail tolerances with safety margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/57T (Vishay) | Same VBR range (22.8–25.2 V), but SMA (DO-214AC) package - 2.3 mm height, 50 % larger footprint, 200 W PPPM. | Lower power rating and taller profile limit use in space-constrained automotive modules; better suited for industrial PCBs with less density pressure. | Select SMAJ24A-E3/57T only if legacy SMA footprint exists or thermal mass requirements exceed SMP capability. |
| TPSMA6.8A (ON Semiconductor) | Lower VBR (6.45–7.14 V), 600 W PPPM, SMA package - not voltage-compatible; requires redesign of protection threshold. | Intended for 5 V rail protection, not 24 V systems - mismatched VWM (5.8 V) risks false triggering on 24 V lines. | Not interchangeable; consider only for new 5 V designs where higher PPPM justifies larger package and different voltage grading. |
Compared with SMAJ24A-E3/57T and TPSMA6.8A, the TPSMP24AHM3_A/I uniquely combines 400 W surge capacity, AEC-Q101 qualification, and sub-1 mm height in DO-220AA - making it the only option meeting both automotive under-hood space and reliability constraints without sacrificing clamping performance.
Availability
TPSMP24AHM3_A/I is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC input modules, and ADAS camera power rails requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for TPSMP24AHM3_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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The TPSMP series belongs to Vishay's eSMP® high-power-density TVS family, engineered specifically for AEC-Q101-compliant automotive and harsh-environment industrial surge protection where low profile, high temperature operation, and repeatable clamping are critical.
FAQ
What is the clamping voltage of the TPSMP24AHM3_A/I at its rated peak pulse current?
The TPSMP24AHM3_A/I clamps to a maximum of 33.2 V when subjected to its rated 12.0 A peak pulse current (10/1000 µs waveform). This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures downstream ICs see voltage limited well below destructive thresholds - critical for protecting 24 V system interfaces like CAN transceivers and sensor drivers.
Is the TPSMP24AHM3_A/I suitable for automotive under-hood applications?
Yes, the TPSMP24AHM3_A/I is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it explicitly suitable for under-hood automotive applications such as engine control units and transmission control modules. Its passivated junction and DO-220AA package withstand thermal cycling, humidity, and mechanical stress per automotive reliability standards.
Does the TPSMP24AHM3_A/I have a bidirectional or unidirectional configuration?
The TPSMP24AHM3_A/I is a unidirectional TVS diode, meaning it conducts only when reverse-biased beyond its breakdown voltage. This configuration provides lower clamping voltage than bidirectional devices at the same stand-off voltage and is intended for DC-biased lines such as 24 V power rails and CAN_H/CAN_L signals with defined reference polarity.
What is the mounting pad layout recommendation for the TPSMP24AHM3_A/I?
Vishay specifies a 5.0 mm × 5.0 mm copper pad for each terminal of the TPSMP24AHM3_A/I to ensure proper thermal dissipation and surge current handling. The pad layout must follow the DO-220AA outline drawing - including 0.100" (2.54 mm) center-to-center spacing - and avoid solder mask dams between pads to prevent tombstoning during reflow.
How does the TPSMP24AHM3_A/I compare to standard SMA-package TVS diodes in terms of board space?
The TPSMP24AHM3_A/I in the SMP (DO-220AA) package occupies approximately 40 % less board area and is 57 % lower in height (1.0 mm vs. 2.3 mm) than comparable SMA (DO-214AC) TVS diodes like SMAJ24A. This reduction enables denser layouts in compact modules such as ADAS cameras and telematics control units without compromising surge rating.
TPSMP24AHM3_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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
TPSMP24AHM3_A/I FAQ
1.How can I place an order for TPSMP24AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP24AHM3_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 TPSMP24AHM3_A/I reliable?
The price and inventory of TPSMP24AHM3_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 TPSMP24AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMP24AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP24AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP24AHM3_A/I?
TPSMP24AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP24AHM3_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 TPSMP24AHM3_A/I?
For technical support, including TPSMP24AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP24AHM3_A/I requirements.
6.How does Aetrix verify that TPSMP24AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMP24AHM3_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 TPSMP24AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMP24AHM3_A/I?
All TPSMP24AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP24AHM3_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 TPSMP24AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMP24AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP24AHM3_A/I Tags
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