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Vishay General Semiconductor - Diodes Division TPSMC22AHE3/9AT
- Part No.:
- TPSMC22AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC22AHE3/9AT.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPSMC22AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping fast voltage transients on power and signal lines. It features a 22.0 V nominal breakdown voltage (VBR), 18.8 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 49.0 A peak pulse current (IPPM), and 30.6 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the TPSMC22AHE3/9AT datasheet, TPSMC22AHE3/9AT pinout, TPSMC22AHE3/9AT application, or TPSMC22AHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 185 °C junction temperature rating, low clamping ratio (VC/VBR = 1.39), and MSL Level 1 reflow compatibility - all critical for high-reliability automotive ECU and industrial motor drive designs.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable performance under thermal stress. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments where sustained high-temperature operation is required.
The device delivers 1500 W peak pulse power per 10/1000 µs waveform with low incremental surge resistance and sub-nanosecond response time. Clamping occurs at 30.6 V when subjected to 49.0 A transient current, providing robust overvoltage protection without compromising system-level timing or signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V - ensures reliable triggering above 18.8 V operating voltage while avoiding false trips during normal ripple. |
| VWM | 18.8 V - maximum continuous reverse voltage before leakage exceeds 1 µA, compatible with 18 V rail systems. |
| VC @ IPPM | 30.6 V - clamping voltage limits downstream component stress during 49.0 A transient, keeping protected ICs below absolute max ratings. |
| PPPM | 1500 W - handles high-energy surges from inductive load switching (e.g., solenoid drivers) without degradation. |
| TJ max | +185 °C - enables placement near heat sources (e.g., power MOSFETs) in engine control units without derating. |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation toward protected circuit side. |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal dissipation. |
Pinout & Package
TPSMC22AHE3/9AT uses the SMC (DO-214AB) package: a 2-terminal surface-mount device with molded epoxy body, matte tin-plated leads, and cathode indicated by a color band. Mounting requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - supports PPAP documentation for Tier-1 suppliers. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without popcorn cracking or delamination - eliminates pre-bake requirements in high-volume SMT lines. |
| 185 °C junction rating | Permits operation in under-hood ambient temperatures up to +125 °C with full derating margin, reducing need for thermal shielding. |
| Low clamping ratio (VC/VBR = 1.39) | Minimizes voltage overshoot during transients, protecting 3.3 V/5 V logic interfaces and analog front-ends without additional series impedance. |
| 10/1000 µs waveform compliance | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 surge immunity test profiles for industrial and automotive applications. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protects microcontroller I/O and gate driver inputs from load dump and inductive kickback during solenoid actuation. IC Role / Device Role / Timing Role: Transient voltage suppressor placed at power input and signal interface points to clamp spikes before they reach sensitive CMOS inputs. Use Value: Withstands 1500 W surges and operates up to 185 °C, enabling direct placement near high-side MOSFETs without thermal derating. |
Use Scenario: Shields isolated gate drivers and current-sense amplifiers from commutation-induced transients in 3-phase inverters. IC Role / Device Role / Timing Role: Unidirectional TVS connected between phase output and ground to absorb flyback energy during PWM switching transitions. Use Value: 30.6 V clamping voltage ensures protected devices remain within 33 V absolute maximum rating, preventing latch-up in isolated SiO2 gate drivers. |
| Telecom Base Station DC Power Input | Consumer Appliance Mainboard Power Rail |
Use Scenario: Guards 48 V DC input stage against lightning-induced surges and hot-swap transients in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of DC-DC converters and PMICs, sized to handle IEC 61000-4-5 Level 4 (4 kV) tests. Use Value: 49.0 A peak pulse current rating meets 2 Ω source impedance test conditions without thermal runaway or parametric shift. |
Use Scenario: Safeguards MCU reset lines and USB PHY power rails from ESD and relay bounce in washing machine and HVAC control boards. IC Role / Device Role / Timing Role: Low-capacitance TVS on 3.3 V/5 V supply nets to suppress fast transients while minimizing signal distortion. Use Value: 1 µA leakage at 18.8 V ensures no impact on battery-backed RTC or low-power sleep modes in energy-efficient appliances. |
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 SMC package, but rated for 400 W PPPM and 22.2 V VBR; lower clamping voltage (35.5 V) but reduced surge capacity. | Limited to consumer-grade applications; not AEC-Q101 qualified or rated for >150 °C operation. | Select SMAJ22A only for cost-sensitive non-automotive designs where 1500 W surge immunity is not required. |
| TPSMC22AHM3 | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound (HM3 suffix vs. HE3). | No functional difference; HM3 variant required for RoHS-compliant, halogen-free BOMs in EU automotive programs. | Choose TPSMC22AHM3 when material compliance mandates halogen-free construction per VW 80101 or GMW3172. |
Compared with SMAJ22A and TPSMC22AHM3, the TPSMC22AHE3/9AT provides full 1500 W surge capability and AEC-Q101 validation in a RoHS-compliant, non-halogen-free package - making it the preferred choice for automotive power electronics requiring both performance and standard compliance without material restrictions.
Availability
TPSMC22AHE3/9AT is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, and telecom base station power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMC22AHE3/9AT 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The TPSMC series is part of Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor family, engineered specifically for high-temperature stability and AEC-Q101 compliance in automotive powertrain and chassis systems.
FAQ
What is the maximum clamping voltage of the TPSMC22AHE3/9AT at its rated peak pulse current?
The TPSMC22AHE3/9AT has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated 49.0 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected downstream components remain within safe operating voltage limits during surge events. The TPSMC22AHE3/9AT maintains this clamping performance across its full -65 °C to +185 °C junction temperature range.
Is the TPSMC22AHE3/9AT qualified for automotive applications?
Yes, the TPSMC22AHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It meets rigorous stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock - supporting PPAP documentation for Tier-1 automotive suppliers. The TPSMC22AHE3/9AT is rated for continuous operation up to +185 °C junction temperature, making it suitable for under-hood engine control modules and transmission control units.
What does the "HE3" suffix indicate in TPSMC22AHE3/9AT?
The "HE3" suffix in TPSMC22AHE3/9AT denotes a RoHS-compliant, AEC-Q101-qualified version with matte tin-plated leads and JESD201 Class 2 whisker resistance. It is distinct from the "HM3" variant, which adds halogen-free molding compound. The "9AT" suffix refers to Vishay's internal revision code and packaging configuration (7″ tape-and-reel, 850 units per reel). The TPSMC22AHE3/9AT is fully compatible with lead-free reflow processes per J-STD-020 MSL Level 1.
How does the TPSMC22AHE3/9AT compare to bidirectional TVS diodes in circuit design?
The TPSMC22AHE3/9AT is unidirectional and protects only against positive-going transients relative to ground - requiring correct cathode orientation toward the protected line. Unlike bidirectional variants, it offers lower leakage (<1 µA at 18.8 V) and tighter VBR tolerance, making it preferable for DC power rail protection. The TPSMC22AHE3/9AT cannot replace bidirectional TVS diodes in AC-coupled or differential signal paths without circuit redesign.
What PCB layout considerations apply to the TPSMC22AHE3/9AT for optimal surge performance?
For optimal transient suppression, the TPSMC22AHE3/9AT must be mounted with 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Short, low-inductance traces between the TVS and protected node - and between the anode and ground plane - are essential to minimize voltage overshoot. Thermal vias under pads improve heat dissipation during repetitive surges. The TPSMC22AHE3/9AT cathode band must align with the protected line direction per schematic polarity.
TPSMC22AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 49A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
TPSMC22AHE3/9AT FAQ
1.How can I place an order for TPSMC22AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC22AHE3/9AT 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 TPSMC22AHE3/9AT reliable?
The price and inventory of TPSMC22AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC22AHE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC22AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC22AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC22AHE3/9AT?
TPSMC22AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC22AHE3/9AT 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 TPSMC22AHE3/9AT?
For technical support, including TPSMC22AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC22AHE3/9AT requirements.
6.How does Aetrix verify that TPSMC22AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC22AHE3/9AT 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 TPSMC22AHE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC22AHE3/9AT?
All TPSMC22AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC22AHE3/9AT, 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 TPSMC22AHE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC22AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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