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Vishay General Semiconductor - Diodes Division TPSMB22AHE3_A/I
- Part No.:
- TPSMB22AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB22AHE3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,116
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Product details
Overview
TPSMB22AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It features a 22 V nominal breakdown voltage (VBR), 18.8 V stand-off voltage (VWM), 30.6 V maximum clamping voltage (VC) at 19.6 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - suitable for automotive power rail protection.
For engineers reviewing the TPSMB22AHE3_A/I datasheet, TPSMB22AHE3_A/I pinout, TPSMB22AHE3_A/I application, or TPSMB22AHE3_A/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification, TJ = 185 °C rating, and clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping with low incremental surge resistance and excellent response time (<1 ns). Its junction passivation enables high-temperature operation up to 185 °C and supports automotive-grade reliability requirements.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 1 μA max reverse leakage at VWM, and maintains clamping within 30.6 V at 19.6 A IPPM - critical for protecting downstream MOSFETs and ICs in 24 V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V - defines precise voltage threshold where avalanche conduction begins; ensures reliable triggering before sensitive circuit damage |
| VWM | 18.8 V - maximum continuous reverse operating voltage; must exceed system nominal voltage (e.g., 12–16 V automotive) with margin |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage seen by protected device during worst-case 10/1000 µs surge; determines survivability of downstream components |
| PPPM | 600 W - peak pulse power handling capability; validates robustness against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges |
| TJ max | +185 °C - enables placement near hot components (e.g., power converters, engine control units) without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation toward protected line |
| MSL Level | Level 1 (J-STD-020) - allows unlimited floor life and reflow up to 260 °C peak; eliminates baking requirements for SMT assembly |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance reference; completes clamping loop during overvoltage events |
| Cathode | Protected line connection | Connected to line being safeguarded (e.g., 24 V supply, CAN-H); conducts avalanche current when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - enables use in ECU, body control, and ADAS modules without additional qualification |
| Junction passivation | Stabilizes electrical characteristics across temperature and lifetime - reduces parameter drift in harsh environments (e.g., under-hood, industrial enclosures) |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients - improves protection margin for 3.3 V/5 V logic interfaces and gate drivers |
| 10/1000 µs waveform rating | Matches industry-standard surge test profiles (IEC 61000-4-5, ISO 7637-2) - provides direct correlation to system-level immunity validation |
| MSL Level 1 | Eliminates moisture sensitivity handling constraints - simplifies manufacturing flow and reduces risk of popcorning during reflow |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load dump and alternator ripple transients on 24 V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp surges above 30 V. Use Value: Limits voltage seen by downstream DC/DC controllers and microcontrollers to ≤30.6 V, preventing latch-up or oxide breakdown. | Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to motor drive noise. IC Role / Device Role / Timing Role: Clamping device connected across sensor output and ground to absorb inductive kickback from nearby solenoids. Use Value: Maintains signal integrity by limiting transient excursions to <31 V, avoiding ADC saturation or op-amp rail-to-rail clipping. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered equipment inputs against lightning-induced surges entering via Ethernet cables. IC Role / Device Role / Timing Role: Primary clamping element on 48 V DC input stage, upstream of DC/DC converter and isolation barrier. Use Value: Absorbs up to 600 W of surge energy while holding clamped voltage below 31 V - preserving isolation integrity and secondary-side regulation. | Use Scenario: Shielding BLDC motor driver ICs from back-EMF spikes generated during commutation in smart home appliances. IC Role / Device Role / Timing Role: TVS mounted across H-bridge high-side FET source and ground to clamp inductive flyback. Use Value: Prevents gate oxide failure in driver ICs by limiting drain-source voltage excursion to ≤30.6 V during rapid current interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W; SMB package identical; not AEC-Q101 qualified | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment due to TJ max = 150 °C | Select SMAJ22A only for cost-sensitive non-automotive designs where 400 W surge capacity suffices |
| TPSMB22AHM3_A/I | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound (HM3 vs HE3) | No functional difference; HM3 required only where halogen-free compliance is mandated (e.g., certain EU industrial standards) | Choose TPSMB22AHM3_A/I if RoHS + halogen-free material declaration is contractually required |
Compared with SMAJ22A and TPSMB22AHM3_A/I, the TPSMB22AHE3_A/I uniquely combines AEC-Q101 qualification, 185 °C operation, and 600 W surge rating in a standard SMB footprint - making it the preferred choice for automotive and high-reliability industrial power rail protection where thermal margin and certification are mandatory.
Availability
TPSMB22AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power supplies, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMB22AHE3_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, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-qualified solutions.
The TPSMB series was engineered specifically for robust transient suppression in demanding automotive and industrial environments - delivering AEC-Q101 compliance, 185 °C operation, and stable clamping performance across extended temperature and lifetime cycles.
FAQ
What is the maximum clamping voltage of the TPSMB22AHE3_A/I under standard test conditions?
The TPSMB22AHE3_A/I has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current (IPPM) of 19.6 A using the 10/1000 µs waveform. This value is measured at TA = 25 °C with specified PCB mounting conditions (0.2" × 0.2" copper pads). The TPSMB22AHE3_A/I maintains this clamping performance across its full operating temperature range, supporting reliable protection of 24 V systems.
Is the TPSMB22AHE3_A/I qualified for automotive applications?
Yes, the TPSMB22AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". It meets all stress tests required for automotive discrete semiconductors, including high-temperature operating life, temperature cycling, and humidity bias. The TPSMB22AHE3_A/I is rated for TJ = 185 °C, enabling use in under-hood and powertrain applications where thermal robustness is critical.
What does the "HE3" suffix signify in TPSMB22AHE3_A/I?
The "HE3" suffix in TPSMB22AHE3_A/I indicates RoHS-compliant construction and AEC-Q101 qualification. It denotes that the device uses matte tin-plated leads, meets JESD 201 Class 2 whisker resistance, and is packaged in MSL Level 1 compliant molding compound. The "A/I" portion specifies 13" tape-and-reel packaging with 3200 units per reel - a standard logistics configuration for automated SMT assembly of the TPSMB22AHE3_A/I.
How does the TPSMB22AHE3_A/I compare to bidirectional TVS diodes in surge protection?
The TPSMB22AHE3_A/I is unidirectional and optimized for clamping positive transients on DC lines - offering lower leakage (<1 μA at VWM) and tighter VBR tolerance than equivalent bidirectional parts. Unlike bidirectional TVS diodes, the TPSMB22AHE3_A/I cannot suppress negative-going surges; it must be oriented with cathode toward the protected line. This makes the TPSMB22AHE3_A/I ideal for 24 V supply rails but unsuitable for AC or differential signal lines without external polarity management.
What is the recommended PCB layout for optimal thermal and electrical performance of the TPSMB22AHE3_A/I?
For optimal performance, mount the TPSMB22AHE3_A/I on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads at each terminal, as specified in the Vishay datasheet. Use short, wide traces to minimize inductance in the clamping path, and ensure solid thermal connection to internal or external ground planes. Avoid thermal relief on pads to maximize heat dissipation. The TPSMB22AHE3_A/I's SMB (DO-214AA) outline requires 2.18 mm minimum pad width and 1.52 mm minimum spacing - adhering to these dimensions ensures reliable solder joint formation and thermal stability during surge events.
TPSMB22AHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
TPSMB22AHE3_A/I FAQ
1.How can I place an order for TPSMB22AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB22AHE3_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 TPSMB22AHE3_A/I reliable?
The price and inventory of TPSMB22AHE3_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 TPSMB22AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB22AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB22AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB22AHE3_A/I?
TPSMB22AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB22AHE3_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 TPSMB22AHE3_A/I?
For technical support, including TPSMB22AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB22AHE3_A/I requirements.
6.How does Aetrix verify that TPSMB22AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB22AHE3_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 TPSMB22AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB22AHE3_A/I?
All TPSMB22AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB22AHE3_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 TPSMB22AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB22AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB22AHE3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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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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