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Vishay General Semiconductor - Diodes Division TPSMB24AHM3_A/H
- Part No.:
- TPSMB24AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB24AHM3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
TPSMB24AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) 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 at 1 mA), 20.5 V stand-off voltage (VWM), 33.2 V maximum clamping voltage at 18.1 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB24AHM3_A/H datasheet, TPSMB24AHM3_A/H pinout, TPSMB24AHM3_A/H application, or TPSMB24AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 suffix, SMB (DO-214AA) package with cathode band polarity marking, and verified clamping performance under repetitive 0.01% duty cycle surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable breakdown characteristics across -65 °C to +185 °C operating range, with 0.085 %/°C temperature coefficient of VBR. Its low incremental surge resistance and fast response time ensure effective suppression of sub-microsecond transients without latch-up or thermal runaway.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 3.5 V max forward voltage at 50 A, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its unidirectional polarity and SMB package enable direct integration into high-density PCB layouts for DC rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 / 24.0 / 25.2 V at 1 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 20.5 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 33.2 V at 18.1 A - actual clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 600 W - peak pulse power handling capacity under standardized transient waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
SMB (DO-214AA) surface-mount package with molded epoxy body, matte tin-plated leads, and cathode identification via axial color band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); mounting pad layout optimized for 5.0 mm × 5.0 mm copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 24 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Stabilizes VBR drift over temperature and lifetime; reduces parameter shift in harsh environments |
| 185 °C TJ capability | Supports placement near heat sources (e.g., power converters) without derating or failure risk |
| 600 W PPPM (10/1000 µs) | Handles typical ISO 7637-2 Pulse 1/2a/5a transients in 24 V automotive systems |
| MSL Level 1 | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements |
| Halogen-free & RoHS | Meets automotive ELV directive and IPC-1752 material declaration requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 20.5 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤33.2 V during 18.1 A transients, preventing latch-up or damage. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential signal pair or single-ended output to ground. Use Value: Clamps fast-rising transients (<1 ns rise time) while maintaining signal integrity due to minimal parasitic capacitance. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered equipment inputs against induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 48 V DC input before DC-DC converter stage. Use Value: Absorbs 600 W pulses without degradation, ensuring system uptime in field-deployed telecom infrastructure. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to divert inductive kickback energy to ground. Use Value: Withstands 75 A 8.3 ms surge currents, eliminating contact arcing and extending relay/mosfet lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Same SMB package, 24 V VBR, but HE3 suffix (not halogen-free); no AEC-Q101 documentation confirmed | Lacks halogen-free certification and formal automotive qualification; suitable for commercial-grade designs only | Select when cost sensitivity outweighs automotive compliance requirements |
| TPSMB24AHE3_A/H | Identical electrical specs and SMB package; differs only in HE3 (RoHS + AEC-Q101) vs. HM3 (halogen-free + RoHS + AEC-Q101) | Acceptable where halogen content is unrestricted; may require additional material declarations | Choose if halogen-free mandate does not apply and supply chain prefers HE3 variant |
Compared with SMBJ24A and TPSMB24AHE3_A/H, the TPSMB24AHM3_A/H uniquely combines halogen-free construction, AEC-Q101 qualification, and full 185 °C operation - making it the only option qualified for next-generation automotive modules requiring both environmental compliance and extended thermal margin.
Availability
TPSMB24AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface clamping, and telecom DC input surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPSMB24AHM3_A/H 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, MOSFETs, and protection devices with emphasis on reliability and high-temperature performance.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for robust, high-energy surge immunity in automotive, industrial, and telecom power systems where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the clamping voltage of TPSMB24AHM3_A/H at its rated peak pulse current?
The TPSMB24AHM3_A/H has a maximum clamping voltage (VC) of 33.2 V when subjected to its specified peak pulse current of 18.1 A under a 10/1000 µs waveform. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for downstream components. The clamping performance is guaranteed across the full operating temperature range up to +185 °C junction temperature.
Is TPSMB24AHM3_A/H qualified for automotive applications?
Yes, TPSMB24AHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the HM3 suffix. It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and humidity bias HTRB. Its 185 °C maximum junction temperature and halogen-free construction meet Tier-1 supplier requirements for engine control, body electronics, and ADAS power domains.
What does the "HM3" suffix mean in TPSMB24AHM3_A/H?
The "HM3" suffix in TPSMB24AHM3_A/H indicates halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. It distinguishes this variant from HE3 (RoHS + AEC-Q101 but not halogen-free) and standard versions. The HM3 marking confirms compliance with IEC 61249-2-21 and IPC-1752 material declarations required for modern automotive and green electronics programs.
Can TPSMB24AHM3_A/H replace TPSMB24AHE3_A/H in an existing design?
TPSMB24AHM3_A/H is a direct functional replacement for TPSMB24AHE3_A/H with identical electrical parameters, SMB package dimensions, and pinout. The only difference is the halogen-free molding compound in HM3. No PCB or schematic changes are needed, though material compliance documentation must be updated to reflect halogen-free status per customer requirements.
What is the maximum reverse leakage current of TPSMB24AHM3_A/H at 20.5 V and 150 °C?
At VWM = 20.5 V and TJ = 150 °C, the TPSMB24AHM3_A/H exhibits a maximum reverse leakage current (ID) of 5 μA. This value is specified in the Vishay datasheet (Document Number: 88406, page 2) and reflects stable performance under elevated temperature stress - critical for long-life operation in enclosed automotive enclosures.
TPSMB24AHM3_A/H 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/H FAQ
1.How can I place an order for TPSMB24AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB24AHM3_A/H 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/H reliable?
The price and inventory of TPSMB24AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for TPSMB24AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB24AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB24AHM3_A/H?
TPSMB24AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB24AHM3_A/H 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/H?
For technical support, including TPSMB24AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB24AHM3_A/H requirements.
6.How does Aetrix verify that TPSMB24AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB24AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of TPSMB24AHM3_A/H?
All TPSMB24AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB24AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for TPSMB24AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB24AHM3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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