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Vishay General Semiconductor - Diodes Division TPSMB22A-1BHE3/5BT
- Part No.:
- TPSMB22A-1BHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB22A-1BHE3/5BT.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,190
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Product details
Overview
TPSMB22A-1BHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features a 22.0 V nominal breakdown voltage (VBR), 18.8 V maximum standoff voltage (VWM), 30.6 V clamping voltage 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 in engine control units and body electronics.
For engineers reviewing the TPSMB22A-1BHE3/5BT datasheet, TPSMB22A-1BHE3/5BT pinout, TPSMB22A-1BHE3/5BT application, or TPSMB22A-1BHE3/5BT equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and verified clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction passivation enables reliable operation at TJ = 185 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
The device delivers precise clamping with 30.6 V VC at IPPM = 19.6 A (10/1000 µs), exhibits <1 μA reverse leakage at VWM = 18.8 V (TA = 25 °C), and maintains stable VBR across temperature via a +0.084 %/°C coefficient - critical for automotive-grade transient suppression where thermal drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V - defines minimum voltage at which clamping initiates reliably under 1 mA test current |
| VWM | 18.8 V - maximum continuous operating voltage before significant leakage; ensures no false triggering on 12 V automotive systems |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage during 10/1000 µs surge; determines protected circuit's maximum overvoltage exposure |
| PPPM | 600 W - peak pulse power handling capability; supports robust protection against ISO 7637-2 Pulse 1/2a/5a transients |
| TJ max. | +185 °C - enables placement near hot components (e.g., power MOSFETs, DC/DC converters) without derating |
| Polarity | Unidirectional - provides reverse-biased clamping only; requires correct orientation relative to DC rail polarity |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.130" footprint and cathode band marking |
Pinout & Package
TPSMB22A-1BHE3/5BT uses the SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, and cathode indicated by a color band. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts surge current to ground/anode when VAK exceeds VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including powertrain and chassis systems per stress test requirements |
| 185 °C junction rating | Enables direct placement on high-temperature PCB zones without thermal derating or heatsinking |
| 600 W peak pulse power (10/1000 µs) | Withstands repeated ISO 7637-2-compliant load dump and inductive switching surges in 12 V systems |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream ICs such as microcontrollers and CAN transceivers |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp transients above 22 V. Use Value: Limits peak voltage to ≤30.6 V during 19.6 A surges, preventing damage to LDOs and MCU power inputs. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs. IC Role / Device Role / Timing Role: TVS mounted across differential signal pair or single-ended output to ground. Use Value: Sub-31 V clamping prevents latch-up or ESD damage to precision ADC front-ends operating at ±15 V rails. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Clamping |
|
Use Scenario: Shielding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary transient suppressor on DC input before DC/DC converter stage. Use Value: 600 W rating handles telecom-grade lightning surges (IEC 61000-4-5 10/700 µs); 18.8 V VWM avoids conduction during normal operation. |
Use Scenario: Adding secondary surge protection on USB-C PD adapter 20 V output rails. IC Role / Device Role / Timing Role: Final-stage TVS after regulation to absorb residual switching noise and plug-in transients. Use Value: Fast response time and 30.6 V clamping ensure connected devices (e.g., laptops) receive clean, compliant voltage even during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W and TJ max. = +150 °C; SMA package (smaller thermal mass) | Limited to non-automotive industrial use due to lack of AEC-Q101 qualification and reduced thermal margin | Select when cost or board space is prioritized over automotive reliability and high-temp operation |
| SMCJ22A | Higher PPPM = 1500 W, same VBR, but larger SMC (DO-214AB) package; TJ max. = +175 °C; AEC-Q101 available in HM3 variant | Used where higher surge energy (e.g., 100 A 10/1000 µs) must be absorbed, requiring larger PCB footprint | Choose when system-level surge testing exceeds 600 W requirements - e.g., heavy-duty vehicle battery interfaces |
Compared with SMAJ22A and SMCJ22A, TPSMB22A-1BHE3/5BT uniquely balances AEC-Q101 qualification, 185 °C operation, and SMB footprint - making it optimal for space-constrained automotive modules needing full-spec compliance without layout redesign.
Availability
TPSMB22A-1BHE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, long-term lifecycle support, and RoHS-compliant AEC-Q101 qualified parts.
Supply support for TPSMB22A-1BHE3/5BT 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 reliability, thermal performance, and automotive qualification.
The TPSMB22A-1BHE3/5BT belongs to Vishay's PAR® (Protected Anisotropic Rectifier) TVS family, engineered specifically for high-temperature, high-reliability transient suppression in automotive and industrial environments where sustained 185 °C operation is mandatory.
FAQ
What is the meaning of the "HE3" and "5BT" suffixes in TPSMB22A-1BHE3/5BT?
The "HE3" suffix indicates RoHS-compliant, AEC-Q101 qualified construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. "5BT" denotes tape-and-reel packaging: 5,000 units per 13-inch reel (I-type delivery mode), per Vishay's ordering nomenclature in document 88406. TPSMB22A-1BHE3/5BT thus combines automotive qualification with high-volume SMT-ready packaging.
Is TPSMB22A-1BHE3/5BT suitable for bidirectional transient protection?
No - TPSMB22A-1BHE3/5BT is strictly unidirectional, as confirmed in the "Features" section of the Vishay datasheet (document 88406). It clamps only when the cathode is positive relative to the anode. For bidirectional protection, a separate device such as the TPSMB22CA (center-tapped, bidirectional variant) is required. Using TPSMB22A-1BHE3/5BT in AC or floating applications risks failure during reverse-polarity transients.
How does the 185 °C maximum junction temperature of TPSMB22A-1BHE3/5BT impact PCB layout?
The 185 °C TJ rating allows TPSMB22A-1BHE3/5BT to be placed adjacent to heat-generating components (e.g., power MOSFETs, DC/DC inductors) without thermal derating. Layout should still follow Vishay's recommended 0.2" × 0.2" copper pads per terminal to maintain 600 W pulse capability. No additional heatsinking is needed, but thermal relief traces must avoid restricting solder joint thermal mass. TPSMB22A-1BHE3/5BT's design eliminates need for layout compromises typical with 150 °C-rated TVS diodes.
Does TPSMB22A-1BHE3/5BT meet ISO 7637-2 or IEC 61000-4-5 surge immunity standards?
TPSMB22A-1BHE3/5BT is not certified to ISO 7637-2 or IEC 61000-4-5 as a standalone module, but its 600 W peak pulse power (10/1000 µs), 30.6 V clamping voltage, and 19.6 A IPPM are directly applicable to meeting Pulse 1 (inductive switch-off), Pulse 2a (load dump), and Pulse 5a (alternator load dump) requirements in 12 V automotive systems. System-level validation is required, but TPSMB22A-1BHE3/5BT provides the foundational clamping performance needed for compliance.
What is the reverse leakage current specification for TPSMB22A-1BHE3/5BT at elevated temperature?
At TA = 25 °C and VWM = 18.8 V, reverse leakage (IR) is ≤1 µA. At TJ = 150 °C and same VWM, leakage increases to ≤5 µA - specified in the "ELECTRICAL CHARACTERISTICS" table of document 88406. This controlled increase ensures minimal standby power loss in high-temp environments while maintaining effective clamping threshold stability via the +0.084 %/°C VBR coefficient. TPSMB22A-1BHE3/5BT's leakage remains well below thresholds that could disrupt bias networks or sensor references.
TPSMB22A-1BHE3/5BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
TPSMB22A-1BHE3/5BT FAQ
1.How can I place an order for TPSMB22A-1BHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB22A-1BHE3/5BT 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 TPSMB22A-1BHE3/5BT reliable?
The price and inventory of TPSMB22A-1BHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB22A-1BHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB22A-1BHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB22A-1BHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB22A-1BHE3/5BT?
TPSMB22A-1BHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB22A-1BHE3/5BT 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 TPSMB22A-1BHE3/5BT?
For technical support, including TPSMB22A-1BHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB22A-1BHE3/5BT requirements.
6.How does Aetrix verify that TPSMB22A-1BHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB22A-1BHE3/5BT 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 TPSMB22A-1BHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB22A-1BHE3/5BT?
All TPSMB22A-1BHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB22A-1BHE3/5BT, 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 TPSMB22A-1BHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB22A-1BHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB22A-1BHE3/5BT Tags
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Diodes Incorporated
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Diodes Incorporated
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