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Vishay General Semiconductor - Diodes Division TPSMB22AHE3_A/H
- Part No.:
- TPSMB22AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB22AHE3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,695
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Product details
Overview
TPSMB22AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 22 V nominal breakdown voltage (VBR = 20.9–23.1 V at 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_A/H datasheet, TPSMB22AHE3_A/H pinout, TPSMB22AHE3_A/H application, or TPSMB22AHE3_A/H 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 with optimized junction passivation for stable leakage and low incremental surge resistance. Its unidirectional architecture provides low forward voltage (VF = 3.5 V at 50 A) and fast response time (<1 ns), enabling effective suppression of fast-rising transients on DC power inputs and MOSFET gate drive lines.
The device is rated for 75 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a positive temperature coefficient of breakdown voltage (αT = 0.084 %/°C), ensuring predictable clamping behavior across its -65 °C to +185 °C operating range - critical for under-hood automotive and high-temperature industrial environments.
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 avalanche conduction begins, ensuring reliable triggering before downstream IC damage. |
| VWM | 18.8 V - maximum continuous reverse working voltage; must exceed system nominal rail (e.g., 12 V or 24 V automotive) to prevent leakage during normal operation. |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage seen by protected circuit during worst-case 10/1000 µs surge; determines safe margin for downstream component voltage ratings. |
| PPPM | 600 W - peak pulse power handling capability under standardized 10/1000 µs waveform; confirms suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 threats. |
| TJ max. | +185 °C - enables use in high-temperature locations (e.g., engine control units, motor drivers) without derating or thermal shutdown concerns. |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in series with positive rail or signal line. |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.205" × 0.220" footprint; compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, cathode indicated by color band. Molding compound meets UL 94 V-0 flammability rating. Terminals are solderable per J-STD-002 and JESD 22-B102; HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., +12 V rail); conducts surge current to ground when VIN exceeds VBR. |
| Anode | Reference/return path | Connected to system ground or low-impedance return plane; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for powertrain and body electronics applications. |
| Junction passivation design | Reduces long-term parameter drift and leakage growth under high-temperature bias stress, supporting >15-year field life in industrial systems. |
| MSL Level 1 rating | Zero moisture sensitivity; no baking required prior to reflow - simplifies manufacturing and eliminates popcorning risk during assembly. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for sensitive 3.3 V or 5 V logic interfaces downstream. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V/24 V battery-fed ECUs in engine compartments. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery input and upstream fuse or DC-DC converter input. Use Value: Clamps peak voltage to ≤30.6 V, protecting 36 V-rated input stages of PMICs and microcontrollers without sacrificing response speed. |
Use Scenario: Protecting analog outputs (e.g., 4–20 mA current loop transmitters) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Series-connected TVS on signal line with grounded cathode, limiting voltage excursion during ±8 kV contact ESD (IEC 61000-4-2). Use Value: Sub-1 ns response ensures clamping occurs before sensor amplifier input stage sustains latch-up or gate oxide damage. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered equipment (IEEE 802.3af/at) against induced surges on 48 V DC input derived from Ethernet cables. IC Role / Device Role / Timing Role: Primary clamping device across input capacitor, coordinated with upstream PTC and secondary filtering. Use Value: 600 W pulse rating handles multi-kV common-mode surges while maintaining <1 µA leakage at 40 V, preserving standby efficiency. |
Use Scenario: Adding robustness to USB-C power delivery paths in portable devices exposed to accidental hot-plug or charger mismatch events. IC Role / Device Role / Timing Role: Parallel-mounted TVS on VBUS line, referenced to chassis ground, activated before internal USB controller overvoltage lockout. Use Value: 18.8 V VWM allows full 20 V PD negotiation range while clamping to 30.6 V - within USB PD 3.1 VBUS fault tolerance limits. |
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 and higher VC = 35.5 V at 13.9 A; SMB package identical. | Limited to lower-energy threats (e.g., IEC 61000-4-2 ESD only); not suitable for ISO 7637-2 Pulse 1 or 5a in automotive. | Select SMAJ22A only for cost-sensitive consumer applications with defined, low-energy surge profiles. |
| SMCJ22A | Higher PPPM = 1500 W and lower VC = 35.2 V at 42.6 A; larger SMC (DO-214AB) package with 0.295" × 0.230" footprint. | Requires PCB layout change; suited for high-reliability industrial UPS or solar inverter DC bus protection. | Choose SMCJ22A when system-level surge test requirements exceed 600 W or when longer lifetime under repeated stress is mandated. |
Compared with SMAJ22A and SMCJ22A, the TPSMB22AHE3_A/H delivers optimal balance of AEC-Q101 compliance, 600 W surge capacity, and SMB footprint - making it the preferred choice for space-constrained automotive and industrial modules requiring validated high-temperature operation.
Availability
TPSMB22AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, AEC-Q101 qualification, and high-temperature reliability.
Supply support for TPSMB22AHE3_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, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMBxxA family is engineered specifically for high-temperature, high-reliability transient suppression in automotive power distribution and industrial control systems - leveraging passivated junction technology and AEC-Q101 validation.
FAQ
What is the maximum clamping voltage of the TPSMB22AHE3_A/H under standard surge conditions?
The TPSMB22AHE3_A/H has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 19.6 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage during transient events. The TPSMB22AHE3_A/H maintains this clamping performance across its full operating temperature range, supporting robust design in demanding environments.
Is the TPSMB22AHE3_A/H qualified for automotive applications?
Yes, the TPSMB22AHE3_A/H carries AEC-Q101 qualification, confirmed by Vishay's documentation and marked by the "HE3" suffix indicating RoHS-compliance and automotive-grade reliability testing. It supports operation up to +185 °C junction temperature and meets MSL Level 1 requirements - making the TPSMB22AHE3_A/H suitable for engine control, body electronics, and ADAS power supply protection.
What does the "HE3" suffix signify in TPSMB22AHE3_A/H?
The "HE3" suffix in TPSMB22AHE3_A/H indicates that the device is RoHS-compliant, AEC-Q101 qualified, and manufactured to Vishay's high-reliability standards for automotive use. It also confirms compliance with JESD 201 Class 2 whisker testing and J-STD-020 reflow profile (peak 260 °C). The "_A/H" denotes packaging in 7" tape-and-reel format with 750 units per reel.
Can the TPSMB22AHE3_A/H be used in bidirectional configurations?
No, the TPSMB22AHE3_A/H is strictly unidirectional and must be oriented with the cathode band toward the protected line. Bidirectional protection requires either two series-opposed unidirectional devices or a dedicated bidirectional TVS such as the TPSMB22CA. Using the TPSMB22AHE3_A/H in reverse polarity will result in forward conduction and failure to clamp negative transients.
What is the leakage current specification for TPSMB22AHE3_A/H at its stand-off voltage?
At the stand-off voltage (VWM) of 18.8 V and ambient temperature of 25 °C, the TPSMB22AHE3_A/H exhibits a maximum reverse leakage current (IR) of 1 µA. At elevated temperature (TJ = 150 °C), leakage increases to a maximum of 5 µA - a value verified in Vishay's electrical characteristics table and critical for low-power always-on circuits where quiescent current matters.
TPSMB22AHE3_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):
- 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/H FAQ
1.How can I place an order for TPSMB22AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB22AHE3_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 TPSMB22AHE3_A/H reliable?
The price and inventory of TPSMB22AHE3_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 TPSMB22AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMB22AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB22AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB22AHE3_A/H?
TPSMB22AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB22AHE3_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 TPSMB22AHE3_A/H?
For technical support, including TPSMB22AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB22AHE3_A/H requirements.
6.How does Aetrix verify that TPSMB22AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMB22AHE3_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 TPSMB22AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMB22AHE3_A/H?
All TPSMB22AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB22AHE3_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 TPSMB22AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMB22AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB22AHE3_A/H Tags
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