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Vishay General Semiconductor - Diodes Division TPSMB22AHM3_A/I
- Part No.:
- TPSMB22AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB22AHM3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,786
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Product details
Overview
TPSMB22AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1 mA), 18.8 V stand-off voltage (VWM), 30.6 V clamping voltage (VC) at 19.6 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to TJ = 185 °C - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB22AHM3_A/I datasheet, TPSMB22AHM3_A/I pinout, TPSMB22AHM3_A/I application, or TPSMB22AHM3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMB package mechanical data, clamping performance under surge conditions, and real-world use cases in high-reliability 12 V/24 V systems.
Technical Context
The TPSMB22AHM3_A/I is a silicon avalanche diode optimized for fast transient suppression with low incremental surge resistance and excellent clamping ratio (VC/VWM ≈ 1.63). Its passivated anisotropic rectifier structure ensures stable breakdown behavior across temperature and lifetime.
It operates exclusively in unidirectional mode (cathode-banded polarity), supports repetitive 0.01% duty cycle surges, and meets J-STD-020 MSL Level 1 (260 °C peak reflow), making it suitable for automated SMT assembly in automotive-grade production environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V at IT = 1 mA - defines reliable avalanche onset threshold for overvoltage detection |
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 600 W - peak pulse power handling capability under standardized transient waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes terminal orientation |
| AEC-Q101 | Qualified - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound, 0.220" × 0.130" footprint with cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance reference; completes clamping loop during overvoltage event |
| Cathode | Protected line connection | Connected to the line being protected (e.g., 12 V rail or sensor output); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR drift < ±5% over 1000 hrs at TJ = 150 °C |
| High-temperature capability | Rated for continuous operation up to +185 °C junction temperature - supports engine control unit (ECU) placement |
| Clamping performance | VC/VBR ratio of ~1.39 enables tighter voltage margin than standard Zener-based TVS devices |
| Surge robustness | 75 A non-repetitive forward surge rating (8.3 ms half-sine) withstands load dump events in 12 V automotive systems |
| Halogen-free & RoHS | HM3 suffix indicates halogen-free molding compound and full RoHS compliance per JEDEC J-STD-609 |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Primary clamping device placed between battery input and DC/DC converter input stage. Use Value: Limits voltage excursion to ≤30.6 V during 19.6 A surge, preventing damage to downstream LDOs and microcontrollers rated for 36 V absolute max. | Use Scenario: Protecting analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional transient shunt on 4–20 mA or 0–10 V output lines exposed to ESD and cable discharge events. Use Value: Clamps fast transients (<1 ns rise time) to <31 V while maintaining <1 μA leakage at 18.8 V, preserving signal integrity and ADC accuracy. |
| Telecom Power Interface Protection | Consumer Device USB Port Protection |
Use Scenario: Guarding PoE-powered Ethernet switch ports against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Secondary-level TVS on 48 V DC input stage upstream of active PoE controller. Use Value: Absorbs 600 W surge energy without thermal runaway, enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) | Use Scenario: Safeguarding USB 2.0 data lines and VBUS in portable speakers and smart home hubs against ESD and hot-plug spikes. IC Role / Device Role / Timing Role: Unidirectional clamp on VBUS line only (not data lines), co-located with polyfuse. Use Value: Responds in <1 ns to clamp 8 kV contact ESD (IEC 61000-4-2) to <31 V, preventing latch-up in USB power switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same SMB package, identical VBR range (20.9–23.1 V), but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated | Select SMBJ22A when cost sensitivity outweighs automotive reliability requirements and no vehicle OEM validation is needed |
| TPSMB22AHM3_A/H | Identical electrical specs and AEC-Q101 qualification; differs only in packaging - 7" tape reel (750 pcs) vs. 13" reel (3200 pcs) | No functional or application difference; choice driven solely by production volume and SMT feeder compatibility | Choose TPSMB22AHM3_A/H for low-to-mid volume builds or prototyping; TPSMB22AHM3_A/I for high-volume automated assembly |
Compared with SMBJ22A and TPSMB22AHM3_A/H, the TPSMB22AHM3_A/I provides guaranteed AEC-Q101 qualification and halogen-free compliance in high-volume 13" tape format - critical for Tier 1 automotive suppliers requiring traceable, long-lifecycle components with zero material exemptions.
Availability
TPSMB22AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power inputs, and consumer USB power protection requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for TPSMB22AHM3_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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive-grade qualification.
The TPSMB series belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure tolerance is non-negotiable.
FAQ
What is the breakdown voltage tolerance for TPSMB22AHM3_A/I?
The TPSMB22AHM3_A/I has a specified breakdown voltage range of 20.9 V to 23.1 V at test current IT = 1 mA, corresponding to ±5% tolerance around the nominal 22 V rating. This tolerance is measured per ANSI/IEEE C62.35 and remains stable across temperature due to its low VBR temperature coefficient (0.084 %/°C).
Is TPSMB22AHM3_A/I suitable for bidirectional transient protection?
No, the TPSMB22AHM3_A/I is unidirectional only - it protects against positive transients on the cathode side relative to anode. For bidirectional protection, two devices in series opposition or a dedicated bidirectional TVS like SMBJ22CA would be required. The cathode band marking confirms polarity-specific orientation during PCB layout.
Does TPSMB22AHM3_A/I meet automotive qualification standards?
Yes, TPSMB22AHM3_A/I is AEC-Q101 qualified, as confirmed in Vishay document 88406 (Rev. 23-Jan-2024). This qualification covers stress tests including HTGB, HTRB, TCT, and ESD, validating suitability for automotive powertrain, chassis, and body electronics applications.
What is the maximum clamping voltage of TPSMB22AHM3_A/I under surge conditions?
The maximum clamping voltage (VC) of TPSMB22AHM3_A/I is 30.6 V at peak pulse current IPPM = 19.6 A, tested with the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events, ensuring compatibility with 36 V-rated downstream components.
How does the HM3 suffix affect the material composition of TPSMB22AHM3_A/I?
The HM3 suffix indicates that TPSMB22AHM3_A/I uses halogen-free molding compound, complies fully with RoHS Directive 2011/65/EU, and passes JEDEC J-STD-609 Class 2 whisker testing. It also confirms AEC-Q101 qualification - distinguishing it from HE3 variants which are RoHS-compliant but not halogen-free.
TPSMB22AHM3_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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 19.6A
- 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)
TPSMB22AHM3_A/I FAQ
1.How can I place an order for TPSMB22AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB22AHM3_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 TPSMB22AHM3_A/I reliable?
The price and inventory of TPSMB22AHM3_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 TPSMB22AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB22AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB22AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB22AHM3_A/I?
TPSMB22AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB22AHM3_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 TPSMB22AHM3_A/I?
For technical support, including TPSMB22AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB22AHM3_A/I requirements.
6.How does Aetrix verify that TPSMB22AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB22AHM3_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 TPSMB22AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB22AHM3_A/I?
All TPSMB22AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB22AHM3_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 TPSMB22AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMB22AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB22AHM3_A/I Tags
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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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