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Vishay General Semiconductor - Diodes Division TPSMB24AHE3_A/I
- Part No.:
- TPSMB24AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB24AHE3_A/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,200
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Product details
Overview
TPSMB24AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 24 V nominal breakdown voltage (VBR), 20.5 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 18.1 A peak pulse current (IPPM), and 33.2 V maximum clamping voltage (VC) - deployed in automotive ECUs, industrial sensor interfaces, and telecom power supplies.
For engineers reviewing the TPSMB24AHE3_A/I datasheet, TPSMB24AHE3_A/I pinout, TPSMB24AHE3_A/I application, or TPSMB24AHE3_A/I equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package details, AEC-Q101 qualification status, thermal derating curves, and direct alternative part comparisons for robust overvoltage protection design-in.
Technical Context
The TPSMB24AHE3_A/I operates as a unidirectional avalanche diode with passivated anisotropic rectifier technology, enabling stable clamping under repetitive surge conditions up to 0.01% duty cycle. Its 185 °C maximum junction temperature and MSL Level 1 rating support high-reliability automotive and industrial environments where thermal cycling and long-term stability are critical.
Clamping performance is defined by low incremental surge resistance and fast response time (<1 ns), ensuring effective suppression of transients before downstream ICs (e.g., microcontrollers, MOSFET gate drivers, or CAN transceivers) experience overstress. The device is rated for 75 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a +0.085 %/°C temperature coefficient of VBR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 / 24.0 / 25.2 V - ensures reliable avalanche initiation above system operating voltage while accommodating manufacturing spread |
| VWM | 20.5 V - maximum continuous reverse voltage before leakage exceeds 1 μA, compatible with 24 V nominal systems |
| VC @ IPPM | 33.2 V - clamped voltage during 18.1 A transient, limiting stress on protected 3.3 V/5 V logic or 24 V power stages |
| PPPM | 600 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump or inductive kick scenarios |
| TJ max | +185 °C - enables operation in under-hood automotive modules and sealed industrial enclosures without thermal derating penalties |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC standard |
| Package | SMB (DO-214AA) - industry-standard SMD outline with 0.220" x 0.130" footprint and matte tin-plated leads |
Pinout & Package
TPSMB24AHE3_A/I is housed in an SMB (DO-214AA) surface-mount package with two terminals: cathode (marked by color band) and anode. The package meets UL 94 V-0 flammability rating and supports reflow soldering at peak temperatures up to 260 °C (MSL Level 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., 24 V rail); conducts during overvoltage to shunt energy to ground |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop with minimal inductance for fast response |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Reduces parameter drift and leakage over lifetime in high-humidity or high-temperature environments |
| 185 °C junction capability | Eliminates need for external thermal derating in engine control units and motor drive inverters |
| 600 W peak pulse power (10/1000 µs) | Handles ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events without failure |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive analog inputs |
| AEC-Q101 qualified (HE3 suffix) | Confirms compliance with automotive stress tests including HTGB, AC/DC life test, and ESD HBM ≥ 8 kV |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules against load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and DC/DC input, clamping surges within nanoseconds. Use Value: Limits peak voltage to ≤33.2 V, preventing damage to upstream regulators and downstream MCU power domains. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in pressure/temperature sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across signal and ground near connector, suppressing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with <1 μA leakage at 20.5 V, avoiding offset errors in precision measurement circuits. |
| Telecom DC Power Input Protection | Motor Drive Gate Driver Clamp |
Use Scenario: Shielding -48 V DC power inputs in base station equipment from lightning-induced surges (IEC 61000-4-5, 2 kV line-to-ground). IC Role / Device Role / Timing Role: Unidirectional TVS connected between -48 V rail and chassis ground, absorbing 600 W pulses without degradation. Use Value: Withstands repetitive surges at 0.01% duty cycle, supporting multi-year field deployment in outdoor cabinets. | Use Scenario: Clamping Miller-induced voltage spikes on high-side N-channel MOSFET gates in BLDC motor controllers. IC Role / Device Role / Timing Role: TVS placed between gate and source, limiting dV/dt-induced overshoot during fast switching transitions. Use Value: Fast response (<1 ns) and low VC prevent false turn-on and gate oxide stress in 600 V+ power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A (ON Semiconductor) | Same SMB package, 24 V VBR, but rated for 600 W (10/1000 µs) and 18.2 A IPPM; no AEC-Q101 qualification stated in datasheet | Valid for industrial/commercial use; not pre-qualified for automotive production | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive validation needs |
| SMCJ24A (Littelfuse) | Larger SMC (DO-214AB) package, same 24 V VBR, 1500 W rating, 61.8 A IPPM; higher thermal mass but 30% larger PCB footprint | Suitable for higher-energy surge environments (e.g., solar inverter DC inputs) where space permits | Choose when system-level surge requirements exceed 600 W and board layout allows SMC footprint |
Compared with SMBJ24A and SMCJ24A, the TPSMB24AHE3_A/I uniquely combines AEC-Q101 qualification, SMB footprint compatibility, and precise 24 V clamping in a single RoHS-compliant, halogen-free (HE3) variant - making it optimal for space-constrained automotive modules requiring zero requalification effort.
Availability
TPSMB24AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom DC power input protection requiring stable component supply, long-term lifecycle assurance, and traceable AEC-Q101-compliant sourcing.
Supply support for TPSMB24AHE3_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, rectifiers, optoelectronics, and passive components with emphasis on reliability, thermal performance, and automotive-grade qualification.
The TPSMB series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor product line, engineered specifically for high-temperature, high-reliability overvoltage protection in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the maximum clamping voltage of the TPSMB24AHE3_A/I under specified test conditions?
The TPSMB24AHE3_A/I has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current (IPPM = 18.1 A) using a 10/1000 µs waveform. This value is measured at TA = 25 °C with device mounted on 0.2" × 0.2" copper pads. The clamping voltage ensures protected circuitry remains below destructive thresholds during transient events, and TPSMB24AHE3_A/I maintains this performance across its full operating temperature range.
Is the TPSMB24AHE3_A/I qualified to AEC-Q101, and what does the HE3 suffix indicate?
Yes, the TPSMB24AHE3_A/I is AEC-Q101 qualified. The HE3 suffix denotes a RoHS-compliant, lead (Pb)-free, and AEC-Q101-qualified version with matte tin-plated leads meeting JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance standards. This makes TPSMB24AHE3_A/I suitable for automotive production without additional qualification testing, unlike non-HE3 variants.
What is the standoff voltage (VWM) of the TPSMB24AHE3_A/I, and how does it relate to system operating voltage?
The TPSMB24AHE3_A/I has a standoff voltage (VWM) of 20.5 V - the maximum DC or continuous reverse voltage it can block without exceeding 1 μA leakage current. This value is intentionally set below the nominal 24 V system rail to provide margin against ripple, tolerance, and temperature drift while ensuring reliable blocking during normal operation. TPSMB24AHE3_A/I thus avoids false conduction in stable 24 V environments.
Can the TPSMB24AHE3_A/I be used in bidirectional configurations?
No, the TPSMB24AHE3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts only when the cathode is positive relative to the anode and cannot suppress negative-going transients on AC-coupled or bipolar signal lines. For bidirectional protection, a separate device such as the TPSMB24CAHE3_A/I (not offered in this part number) or back-to-back configuration would be required - TPSMB24AHE3_A/I must be applied with correct polarity alignment.
What is the thermal derating behavior of the TPSMB24AHE3_A/I above 25 °C ambient?
The TPSMB24AHE3_A/I follows standard thermal derating per Figure 2 in the Vishay datasheet: peak pulse power (PPPM) decreases linearly from 600 W at 25 °C to zero at 185 °C junction temperature. At 125 °C ambient (assuming typical θJA), PPPM is reduced to approximately 360 W. Designers must calculate actual junction temperature rise using PCB copper area and ensure TPSMB24AHE3_A/I remains within its 185 °C TJ limit during surge events.
TPSMB24AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 18.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
TPSMB24AHE3_A/I FAQ
1.How can I place an order for TPSMB24AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB24AHE3_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 TPSMB24AHE3_A/I reliable?
The price and inventory of TPSMB24AHE3_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 TPSMB24AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB24AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB24AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB24AHE3_A/I?
TPSMB24AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB24AHE3_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 TPSMB24AHE3_A/I?
For technical support, including TPSMB24AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB24AHE3_A/I requirements.
6.How does Aetrix verify that TPSMB24AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB24AHE3_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 TPSMB24AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB24AHE3_A/I?
All TPSMB24AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB24AHE3_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 TPSMB24AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB24AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB24AHE3_A/I Tags
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