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Vishay General Semiconductor - Diodes Division TPSMB24AHM3_A/I
- Part No.:
- TPSMB24AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB24AHM3_A/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,038
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Product details
Overview
TPSMB24AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 24 V nominal breakdown voltage (VBR = 22.8–25.2 V), 600 W peak pulse power (10/1000 µs), 18.1 A peak pulse current (IPPM), 33.2 V maximum clamping voltage (VC), and operates up to TJ = 185 °C - enabling robust protection in automotive power electronics and industrial sensor interfaces.
For engineers reviewing the TPSMB24AHM3_A/I datasheet, TPSMB24AHM3_A/I pinout, TPSMB24AHM3_A/I application, or TPSMB24AHM3_A/I equivalent, key selection criteria include its unidirectional polarity, SMB (DO-214AA) package compatibility with high-reliability PCB layouts, AEC-Q101 qualification status, and verified clamping performance under repetitive 0.01% duty-cycle surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns), ensuring effective suppression of fast-rising transients before downstream ICs or MOSFETs are damaged. Its junction temperature rating of 185 °C supports operation in under-hood automotive environments and high-power industrial enclosures without thermal derating penalties.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits stable VBR drift (αT = 0.085 %/°C), enabling predictable clamping across wide ambient ranges. It meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for automotive-grade production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V - defines precise clamping onset threshold at 1 mA test current; ensures reliable turn-on before protected circuit exceeds safe voltage limits |
| VWM | 20.5 V - maximum continuous reverse working voltage; sets upper limit for steady-state rail operation without leakage degradation |
| VC @ IPPM | 33.2 V - clamped voltage during 18.1 A 10/1000 µs surge; determines worst-case overvoltage stress seen by downstream components |
| PPPM | 600 W - peak pulse power handling capacity; enables survivability against common ISO 7637-2 and IEC 61000-4-5 surge events |
| IFSM | 75 A - 8.3 ms single half-sine surge current rating; validates robustness against motor-commutation or relay-switching energy bursts |
| TJ max. | +185 °C - maximum junction temperature; supports placement near heat sources and eliminates derating in high-ambient designs |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.205" × 0.220" footprint; compatible with automated pick-and-place and reflow profiles up to 260 °C |
Pinout & Package
SMB (DO-214AA) package with molded plastic body, matte tin-plated leads, and cathode band marking. Dimensions: 3.94 mm × 2.20 mm × 1.52 mm (L × W × H); mounting pad layout requires 5.0 mm × 5.0 mm copper pads per terminal for full thermal and surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR; polarity must match system ground reference |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes conduction path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated surge energy absorption capability for automotive load-dump and inductive kick scenarios without failure |
| AEC-Q101 qualified (HM3 suffix) | Production-validated reliability for automotive applications including engine control units, body electronics, and ADAS sensors |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow assembly without moisture-related popcorn or delamination risks |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for automotive OEMs and industrial equipment manufacturers |
| 0.085 %/°C VBR tempco | Predictable, linear breakdown voltage shift over temperature - simplifies margin analysis in thermal-aware system design |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V CAN bus power inputs and LIN transceiver supplies against ISO 7637-2 Pulse 1, 2a, and 5a transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VBAT and chassis ground to clamp negative-going load dump spikes and positive-going switching surges. Use Value: Limits voltage excursion to ≤33.2 V during 18.1 A surges, preventing damage to 36 V-rated DC-DC converters and interface ICs. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across sensor output and ground to absorb ESD and nearby relay-switching noise. Use Value: Fast <1 ns response and 33.2 V clamping prevent latch-up or offset drift in precision op-amps and ADC front-ends. |
| Consumer Appliance Motor Drive Protection | Telecom Power Supply Input Stage |
Use Scenario: Shielding microcontroller I/O and gate drivers in smart home HVAC systems from brush motor commutation spikes. IC Role / Device Role / Timing Role: TVS mounted at motor driver power input to shunt inductive energy back to bulk capacitor during MOSFET turn-off. Use Value: 75 A IFSM rating withstands repeated 8.3 ms surges; 185 °C TJ max ensures stability near hot-running motors. |
Use Scenario: Front-end transient suppression on 48 V telecom rectifier outputs feeding PoE injectors and baseband processors. IC Role / Device Role / Timing Role: Unidirectional clamping device on secondary-side DC bus to meet IEC 61000-4-5 Level 4 immunity requirements. Use Value: 600 W PPPM and 33.2 V VC enable compliance with 4 kV/2 kA surge tests while minimizing voltage headroom loss. |
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 (STMicroelectronics) | Same SMB package, 24 V VBR, but lower PPPM = 600 W (same rating), higher VC = 38.9 V, no AEC-Q101 qualification | Lacks automotive qualification; suitable for industrial/commercial only where AEC-Q101 is not mandated | Select if cost sensitivity outweighs automotive compliance and higher clamping voltage is acceptable |
| TPSMB24AHM3_A/H (Vishay) | Identical electrical specs and AEC-Q101 qualification; differs only in packaging - 7" tape/reel (H) vs. 13" tape/reel (I) | No functional or application difference; purely logistics-driven choice for SMT line feed configuration | Select for smaller reel size compatibility with compact pick-and-place feeders |
Compared with SMBJ24A and TPSMB24AHM3_A/H, the TPSMB24AHM3_A/I offers identical surge performance and automotive qualification but is uniquely supplied in 13" reels - optimizing high-volume production throughput while maintaining the lowest clamping voltage (33.2 V) in its class for tighter system voltage margins.
Availability
TPSMB24AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom power supply hardening requiring stable component supply, long-term lifecycle assurance, and traceable AEC-Q101-compliant sourcing.
Supply support for TPSMB24AHM3_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 demanding industrial and automotive applications.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for high-temperature, high-surge environments where AEC-Q101 compliance and stable clamping performance are mandatory - such as under-hood automotive electronics and factory-floor control systems.
FAQ
What is the exact breakdown voltage range for TPSMB24AHM3_A/I?
The TPSMB24AHM3_A/I has a guaranteed breakdown voltage range of 22.8 V to 25.2 V at 1 mA test current (VBR), with a nominal value of 24.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed in Vishay's official datasheet revision 23-Jan-2024 (Document Number: 88406). The tight tolerance ensures consistent clamping behavior across production lots.
Is TPSMB24AHM3_A/I qualified for automotive use?
Yes, TPSMB24AHM3_A/I is AEC-Q101 qualified - explicitly stated in the Vishay datasheet under "MECHANICAL DATA" and "Notes" sections. The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. This makes TPSMB24AHM3_A/I suitable for automotive powertrain, body, and ADAS applications requiring certified reliability.
What does the "HM3_A/I" suffix mean in TPSMB24AHM3_A/I?
In TPSMB24AHM3_A/I, "HM3" indicates halogen-free, RoHS-compliant, and AEC-Q101-qualified construction; "A" is the revision code; and "I" specifies packaging in 13-inch diameter plastic tape and reel (3200 units per reel). This contrasts with "H", which denotes 7-inch reels (750 units). The suffix directly defines compliance status and logistics format - not electrical variation.
What is the maximum clamping voltage of TPSMB24AHM3_A/I under surge conditions?
The maximum clamping voltage (VC) of TPSMB24AHM3_A/I is 33.2 V at its rated peak pulse current of 18.1 A (IPPM) using a 10/1000 µs waveform. This value is measured per standard test conditions and appears in the "ELECTRICAL CHARACTERISTICS" table of the Vishay datasheet. It represents the highest voltage the protected circuit will experience during a full-rated surge event.
Can TPSMB24AHM3_A/I replace TPSMB24AHE3_A/I in a design?
TPSMB24AHM3_A/I and TPSMB24AHE3_A/I share identical electrical specifications and AEC-Q101 qualification, differing only in material composition: HM3 is halogen-free, while HE3 is standard RoHS-compliant. Both are drop-in replacements electrically and mechanically. No PCB or layout changes are required when substituting TPSMB24AHM3_A/I for TPSMB24AHE3_A/I - only compliance documentation updates may be needed.
TPSMB24AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB24AHM3_A/I FAQ
1.How can I place an order for TPSMB24AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB24AHM3_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 TPSMB24AHM3_A/I reliable?
The price and inventory of TPSMB24AHM3_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 TPSMB24AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB24AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB24AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB24AHM3_A/I?
TPSMB24AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB24AHM3_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 TPSMB24AHM3_A/I?
For technical support, including TPSMB24AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB24AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB24AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB24AHM3_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 TPSMB24AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB24AHM3_A/I?
All TPSMB24AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB24AHM3_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 TPSMB24AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMB24AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB24AHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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