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Vishay General Semiconductor - Diodes Division TPSMC24AHE3_B/I
- Part No.:
- TPSMC24AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC24AHE3_B/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,367
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Product details
Overview
TPSMC24AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 24 V nominal breakdown voltage (VBR = 22.8–25.2 V), 1500 W peak pulse power (10/1000 μs), 33.2 V maximum clamping voltage at 45.2 A, and operates up to +185 °C junction temperature - ideal for automotive power rail and sensor interface protection.
For engineers reviewing the TPSMC24AHE3_B/I datasheet, TPSMC24AHE3_B/I pinout, TPSMC24AHE3_B/I application, or TPSMC24AHE3_B/I equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification, TJ = 185 °C rating, and clamping performance under IEC 61000-4-5 surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping with low incremental surge resistance and sub-nanosecond response time. Its junction passivation enables reliable operation at TJ = 185 °C, meeting automotive-grade thermal stress requirements without derating below 150 °C.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 1.0 μA max reverse leakage at 20.5 V stand-off voltage (VWM) and 25 °C - ensuring minimal standby power loss in always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 / 24.0 / 25.2 V - ensures precise overvoltage triggering above 20.5 V system operating rail |
| VWM | 20.5 V - compatible with 24 V nominal automotive power systems with margin for ripple and transients |
| VC @ IPPM | 33.2 V - clamps surges to safe levels for downstream 36 V-rated MOSFETs and controllers |
| PPPM | 1500 W (10/1000 μs) - handles ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A (8.3 ms half-sine) - withstands load-dump events in 12 V/24 V vehicle electrical systems |
| TJ max. | +185 °C - supports under-hood placement without thermal derating in engine control units |
| Polarity | Unidirectional - protects DC power rails where reverse voltage is not expected |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow), RoHS-compliant and AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for protected line | Connected to power rail or signal line requiring surge suppression; conducts during forward surge |
| Cathode | Output terminal to ground or return path | Connected to system ground; defines clamping reference and polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables robust protection against severe transients like ISO 7637-2 Pulse 5 without cascaded devices |
| TJ = 185 °C capability | Eliminates thermal derating in high-ambient environments such as powertrain and ADAS modules |
| AEC-Q101 qualified (HE3 suffix) | Validated reliability for automotive production use, including temperature cycling and HTRB |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on protected ICs while maintaining fast response and low capacitance |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and input filter capacitor. Use Value: Clamps 120 V/100 ms load dump to ≤33.2 V, preventing damage to upstream DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Point-of-entry surge suppressor on 4–20 mA or 0–10 V signal lines exposed to ESD and inductive switching noise. Use Value: Limits transient-induced offset errors and latch-up risk with <1 nS response and <1.0 μA leakage at 20.5 V. |
| Telecom DC Power Input | Computer Peripheral Port Protection |
Use Scenario: Securing 48 V DC input of PoE-powered network switches and base station radios. IC Role / Device Role / Timing Role: Primary overvoltage clamp before DC-DC regulation stage. Use Value: Absorbs 1500 W surges per IEC 61000-4-5 while maintaining VWM margin above 48 V nominal with 20.5 V rating. |
Use Scenario: Protecting USB-C and HDMI hot-swap ports in docking stations and monitors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Board-level TVS on VBUS and CC lines, leveraging low capacitance and fast response. Use Value: Provides <1.0 μA leakage at 20.5 V and 33.2 V clamping to preserve signal integrity and meet USB-IF ESD compliance. |
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 | Lower PPPM (400 W), same VBR range, SMA package (smaller footprint, lower thermal mass) | Not AEC-Q101 qualified; limited to commercial/industrial use; insufficient for automotive load dump | Select only for space-constrained, non-automotive designs with lower surge energy requirements. |
| TPSMC24AHM3_B/I | Identical electrical specs; halogen-free molding compound; same AEC-Q101 qualification | No functional difference; used where halogen-free compliance is mandated (e.g., EU automotive Tier 1) | Direct material substitution when halogen-free requirement applies; no design or layout change needed. |
Compared with TPSMC24AHE3_B/I, SMAJ24A offers reduced surge handling and no automotive qualification, while TPSMC24AHM3_B/I provides identical protection performance with halogen-free construction - making it a drop-in material alternative rather than a functional upgrade.
Availability
TPSMC24AHE3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom DC power inputs, and computer peripheral port protection requiring stable component supply across long production lifecycles.
Supply support for TPSMC24AHE3_B/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 TPSMC24AHE3_B/I belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for AEC-Q101-compliant surge protection in harsh-temperature automotive and industrial environments.
FAQ
What is the clamping voltage of the TPSMC24AHE3_B/I at its rated peak pulse current?
The TPSMC24AHE3_B/I has a maximum clamping voltage (VC) of 33.2 V at its peak pulse current (IPPM) of 45.2 A, measured using a 10/1000 μs waveform. This value ensures protected downstream components - such as 36 V-rated gate drivers or analog front-ends - remain within safe operating limits during surge events. The clamping performance is guaranteed across the full operating temperature range up to +185 °C.
Is the TPSMC24AHE3_B/I qualified for automotive applications?
Yes, the TPSMC24AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". It meets rigorous stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST). This qualification validates its use in automotive powertrain, body control, and ADAS modules where reliability under thermal and electrical stress is critical.
What does the "HE3" suffix indicate in TPSMC24AHE3_B/I?
The "HE3" suffix in TPSMC24AHE3_B/I denotes RoHS-compliant construction and AEC-Q101 qualification. It distinguishes this variant from non-automotive versions (e.g., standard "A" suffix) and confirms compliance with JESD201 Class 2 whisker resistance, MSL Level 1 reflow capability (260 °C peak), and high-temperature junction operation up to +185 °C - all essential for automotive production use.
How does the TPSMC24AHE3_B/I compare to bidirectional TVS diodes in circuit design?
The TPSMC24AHE3_B/I is unidirectional, meaning it protects only against positive-going transients on DC lines referenced to ground. Unlike bidirectional variants, it cannot suppress negative surges - so it must be used on properly polarized rails. Its advantage lies in lower leakage (<1.0 μA at 20.5 V) and tighter VBR tolerance versus bidirectional equivalents, making it preferred for 24 V automotive power inputs where reverse voltage is not expected.
What is the recommended PCB pad layout for the TPSMC24AHE3_B/I in high-surge applications?
Vishay specifies mounting the TPSMC24AHE3_B/I on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal to achieve full 1500 W pulse power rating. Smaller pads reduce thermal dissipation and derate peak power. The SMC (DO-214AB) outline requires 0.126" minimum cathode/anode pad width and 0.185" maximum center-to-center spacing - details are provided in the official package drawing (Document Number 88407, page 4).
TPSMC24AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- 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):
- 45.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
TPSMC24AHE3_B/I FAQ
1.How can I place an order for TPSMC24AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC24AHE3_B/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 TPSMC24AHE3_B/I reliable?
The price and inventory of TPSMC24AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC24AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC24AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC24AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC24AHE3_B/I?
TPSMC24AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC24AHE3_B/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 TPSMC24AHE3_B/I?
For technical support, including TPSMC24AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC24AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC24AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC24AHE3_B/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 TPSMC24AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC24AHE3_B/I?
All TPSMC24AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC24AHE3_B/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 TPSMC24AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC24AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC24AHE3_B/I Tags
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