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Vishay General Semiconductor - Diodes Division TPSMB22AHE3/52T
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- Part No.:
- TPSMB22AHE3/52T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB22AHE3/52T.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,190
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Product details
Overview
TPSMB22AHE3/52T 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 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1 mA), 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 - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB22AHE3/52T datasheet, TPSMB22AHE3/52T pinout, TPSMB22AHE3/52T application, or TPSMB22AHE3/52T equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, clamping performance under 10/1000 μs surge, and thermal derating behavior above 25 °C ambient.
Technical Context
The TPSMB22AHE3/52T employs passivated anisotropic rectifier technology with optimized junction passivation for stable breakdown characteristics across temperature. Its 185 °C maximum junction rating enables operation in high-temperature automotive engine-bay and industrial motor-control environments without derating loss below 125 °C.
It delivers 30.6 V clamping voltage at 19.6 A (10/1000 μs), achieving low incremental surge resistance and fast response time (< 1 ns), critical for protecting downstream MOSFETs and ICs from ESD and load-dump events. The device is rated for 75 A non-repetitive forward surge (8.3 ms half-sine) and exhibits only 1 μA reverse leakage at VWM = 18.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V at 1 mA - defines precise voltage threshold where clamping initiates; ensures reliable turn-on before sensitive circuit damage. |
| VWM | 18.8 V - maximum continuous reverse operating voltage; sets safe margin below breakdown for stable DC rail protection. |
| VC @ IPPM | 30.6 V at 19.6 A (10/1000 μs) - actual clamped voltage seen by protected circuit during surge; determines stress on downstream components. |
| PPPM | 600 W - peak transient energy absorption capacity; supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| TJ max | +185 °C - enables use in under-hood automotive modules and high-ambient industrial enclosures without thermal shutdown. |
| Polarity | Unidirectional - provides reverse-biased clamping only; suitable for DC power line protection where polarity is fixed. |
| Package | SMB (DO-214AA) - industry-standard SMD outline with 0.220" x 0.130" footprint; compatible with automated placement and reflow profiles up to 260 °C. |
Pinout & Package
TPSMB22AHE3/52T is housed in an SMB (DO-214AA) surface-mount package with two terminals: cathode (marked by color band) and anode. The package meets UL 94 V-0 flammability rating and uses matte tin-plated leads compliant with J-STD-002 solderability and JESD 22-B102 whisker testing (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts transient current to ground when VIN exceeds VBR; polarity must match DC rail orientation. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping loop; layout requires minimal trace inductance for effective suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including HTOL, TC, HAST, and UHAST - required for powertrain and body control module deployments. |
| 185 °C junction capability | Enables uninterrupted operation in high-temperature zones (e.g., near engines or power converters) without thermal rolloff of clamping performance. |
| 600 W peak pulse power (10/1000 μs) | Withstands repetitive surge stress per ISO 7637-2 and IEC 61000-4-5 Level 3/4 without degradation; supports >100,000 surge cycles. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during transients - critical for safeguarding 24 V-rated microcontrollers and CAN transceivers. |
| MSL Level 1 (260 °C peak) | Allows single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement in production. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in body control modules (BCM) from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and input filter capacitor to clamp surges before LDOs and microcontrollers. Use Value: Clamps to 30.6 V at 19.6 A, limiting stress on downstream 36 V-rated regulators and ensuring system reset immunity during 120 V/50 ms load-dump events. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point to shunt fast transients (< 1 ns rise) before signal conditioning op-amps. Use Value: Sub-1 ns response and 1 μA leakage at 18.8 V preserve signal integrity and prevent false triggering in precision current-loop receivers. |
| Consumer Power Adapter Input Protection | Telecom DC Feeder Line Protection |
|
Use Scenario: Safeguarding AC/DC adapter primary-side DC bus against surge coupling from mains transients (IEC 61000-4-5) and hot-plug spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor to absorb repetitive 600 W pulses without thermal runaway. Use Value: 185 °C TJ rating allows sustained operation in enclosed adapters; 600 W rating covers multiple Class III surge events per EN 61000-4-5. |
Use Scenario: Protecting -48 V DC feeder lines in telecom base stations from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS installed at power entry PCB edge to divert common-mode surges to chassis ground before DC/DC converters. Use Value: 30.6 V clamping ensures protected converters see < 35 V peak - well within 40 V absolute maximum ratings of telecom-grade POL modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage 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 150 °C TJ max and no AEC validation. | Select SMAJ22A only for cost-sensitive non-automotive designs where 400 W surge margin suffices and qualification is not required. |
| SMCJ22A | Higher PPPM = 1500 W; same VBR, VC, and polarity; larger SMC (DO-214AB) package (0.280" x 0.240") - not footprint-compatible. | Used where higher surge endurance is mandatory (e.g., outdoor telecom cabinets); requires PCB layout change and higher mounting pad area. | Choose SMCJ22A when system-level surge testing exceeds 600 W requirements; accept larger footprint and thermal mass trade-off. |
Compared with SMAJ22A and SMCJ22A, the TPSMB22AHE3/52T uniquely balances AEC-Q101 qualification, 600 W capability, and SMB footprint - making it optimal for space-constrained automotive modules requiring validated reliability without redesign.
Availability
TPSMB22AHE3/52T is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface, and telecom DC feeder line protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for TPSMB22AHE3/52T 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 is part of Vishay's PAR® transient suppressor product line, engineered specifically for robust, high-temperature-stable clamping in automotive and industrial power systems where failure modes must be eliminated under extreme thermal and electrical stress.
FAQ
What is the exact breakdown voltage range for TPSMB22AHE3/52T?
The TPSMB22AHE3/52T has a guaranteed breakdown voltage (VBR) range of 20.9 V to 23.1 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35. This range ensures consistent clamping initiation across production lots and temperature extremes, and is confirmed in Vishay's official datasheet revision 23-Jan-2024 (Document Number: 88406). The nominal value is 22.0 V.
Is TPSMB22AHE3/52T qualified for automotive applications?
Yes, TPSMB22AHE3/52T is AEC-Q101 qualified - explicitly stated in the Vishay datasheet under "MECHANICAL DATA" and "Notes" sections. The HE3 suffix denotes RoHS-compliant and AEC-Q101-qualified construction, validated for use in automotive powertrain, body electronics, and ADAS modules requiring extended temperature operation up to +185 °C.
What is the maximum clamping voltage of TPSMB22AHE3/52T under surge conditions?
The TPSMB22AHE3/52T clamps to a maximum of 30.6 V when subjected to its rated peak pulse current of 19.6 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet and represents the worst-case voltage imposed on protected circuitry during transient events.
Does TPSMB22AHE3/52T have bidirectional polarity?
No, TPSMB22AHE3/52T is unidirectional only, as confirmed in the "FEATURES" section of the Vishay datasheet. It functions as a reverse-biased avalanche diode and must be oriented with the cathode band toward the protected line. Bidirectional variants (e.g., TPSMB22CA) exist in the same family but are distinct orderable parts.
What package type does TPSMB22AHE3/52T use, and is it lead-free?
TPSMB22AHE3/52T uses the SMB (DO-214AA) surface-mount package with matte tin-plated leads. It is RoHS-compliant and halogen-free per Vishay's material categorization (doc?99912), and meets J-STD-002 solderability and JESD 22-B102 whisker test Class 2 - fully compatible with lead-free reflow processes peaking at 260 °C (MSL Level 1).
TPSMB22AHE3/52T 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 (SMBJ)
TPSMB22AHE3/52T FAQ
1.How can I place an order for TPSMB22AHE3/52T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB22AHE3/52T 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 TPSMB22AHE3/52T reliable?
The price and inventory of TPSMB22AHE3/52T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB22AHE3/52T is usually 5 days.
3.What payment methods are accepted for TPSMB22AHE3/52T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB22AHE3/52T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB22AHE3/52T?
TPSMB22AHE3/52T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB22AHE3/52T 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 TPSMB22AHE3/52T?
For technical support, including TPSMB22AHE3/52T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB22AHE3/52T requirements.
6.How does Aetrix verify that TPSMB22AHE3/52T is sourced from the original manufacturer or authorized distributors?
All TPSMB22AHE3/52T 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 TPSMB22AHE3/52T meets industry standards.
7.What is the process for return or replacement of TPSMB22AHE3/52T?
All TPSMB22AHE3/52T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB22AHE3/52T, 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 TPSMB22AHE3/52T part is unused and in its original packaging.
Return procedure for TPSMB22AHE3/52T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB22AHE3/52T Tags
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