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Vishay General Semiconductor - Diodes Division TPSMC22HE3/9AT
- Part No.:
- TPSMC22HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC22HE3/9AT.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,285
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Product details
Overview
TPSMC22HE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge clamping on power and signal lines. It features 22 V 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 49 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces, industrial I/O ports, and DC power rails against ESD and load-switching transients.
For engineers reviewing the TPSMC22HE3/9AT datasheet, TPSMC22HE3/9AT pinout, TPSMC22HE3/9AT application, or TPSMC22HE3/9AT equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, low 1.0 µA reverse leakage at VWM, unidirectional polarity, and compatibility with lead-free reflow per J-STD-020 MSL level 1.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1.0 µA leakage at 18.8 V), then rapidly avalanches below 30.6 V to divert surge energy away from downstream ICs. Its passivated anisotropic rectifier structure enables stable performance up to TJ = 185 °C, supporting under-hood automotive and high-temperature industrial environments.
The device uses a single-junction silicon avalanche structure optimized for fast response (<1 ns), low incremental surge resistance, and repeatable clamping behavior across 10/1000 µs transients. It is rated for non-repetitive 200 A forward surge (8.3 ms half-sine) and meets JEDEC JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 18.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA; sets safe operating margin for 15–18 V DC systems |
| VC @ IPPM | 30.6 V at 49 A - clamping voltage during 10/1000 µs surge; ensures protected ICs see <31 V during worst-case transients |
| PPPM | 1500 W - peak pulse power handling capacity; supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges |
| TJ max | +185 °C - enables operation in engine control units, motor drives, and other high-ambient-temperature locations without derating |
| Polarity | Unidirectional - provides reverse-biased clamping only; requires correct orientation relative to DC rail polarity |
| 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
TPSMC22HE3/9AT is housed in an SMC (DO-214AB) plastic package with matte tin-plated leads. Cathode is marked by a color band on the body. The device has two terminals: anode and cathode - no internal circuitry or additional pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during clamping | Connected to line being protected (e.g., +12 V rail); conducts surge current toward cathode when VAK > VBR |
| Cathode | Current exit terminal during clamping | Connected to reference (e.g., ground or return path); completes low-impedance surge shunt path during avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - supports use in ADAS sensors, body control modules, and infotainment power supplies |
| 185 °C junction rating | Enables uninterrupted operation in under-hood applications where ambient temperatures exceed 125 °C and PCB self-heating adds margin |
| 1500 W peak pulse power | Withstands high-energy transients such as load dump (ISO 16750-2) and inductive switching spikes without degradation |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - eliminates bake requirements pre-assembly |
| Low 1.0 µA leakage at VWM | Minimizes standby power loss in battery-powered systems and avoids false triggering in high-impedance sensor bias networks |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver power pins and analog sensor inputs (e.g., pressure, temperature) from battery transients and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between supply rail and ground, clamping surges within nanoseconds. Use Value: Prevents latch-up or damage to 5 V/3.3 V sensor interface ICs during ISO 7637-2 Pulse 1 (−150 V) and Pulse 2a (+100 V) events. |
Use Scenario: Safeguarding PLC digital input modules and fieldbus terminations against induced surges from nearby motor contactors or relay coils. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines, coordinated with upstream fusing and filtering. Use Value: Limits voltage excursion to ≤30.6 V during 1 kV/500 A 10/1000 µs surges, preserving input stage integrity per IEC 61000-4-5 Level 3. |
| DC Power Rail Protection | Telecom Line Interface Protection |
Use Scenario: Guarding 12 V/24 V DC power distribution networks in networking equipment and embedded gateways against load-dump and hot-swap transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at point-of-load after bulk capacitance, absorbing residual energy not filtered by LC stages. Use Value: Clamps 12 V rail to <31 V during 300 ms load-dump events (ISO 16750-2), preventing regulator overvoltage shutdown or MOSFET failure. |
Use Scenario: Protecting Ethernet PHY power pins and auxiliary bias rails in PoE-powered switches and base stations from lightning-induced surges on AC mains or data lines. IC Role / Device Role / Timing Role: Secondary-level clamping device on isolated DC outputs derived from AC-DC or DC-DC converters. Use Value: Provides 1500 W surge immunity while maintaining <1 µA leakage at 18.8 V - critical for low-noise telecom power integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 600 W and smaller SMB (DO-214AA) package | Limited to lower-energy transients (e.g., ESD-only); unsuitable for ISO 7637-2 or IEC 61000-4-5 Level 4 | Select when space-constrained layouts require smaller footprint and surge energy is limited to <600 W |
| TPSMC22AHM3/9AT | Identical electrical specs and package; differs only in halogen-free molding compound and HM3 suffix marking | Required for RoHS+halogen-free compliance programs; identical AEC-Q101 qualification and thermal performance | Choose when material compliance mandates halogen-free construction without sacrificing performance or reliability |
Compared with SMBJ22A and TPSMC22AHM3/9AT, the TPSMC22HE3/9AT delivers full 1500 W surge capability in the robust SMC package while meeting automotive-grade reliability - making it the preferred choice for high-energy, high-temperature, and AEC-Q101–mandated applications where SMBJ22A lacks margin and HM3 variant adds no functional benefit.
Availability
TPSMC22HE3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecommunications infrastructure requiring stable component supply, long-term lifecycle support, and AEC-Q101–qualified surge protection.
Supply support for TPSMC22HE3/9AT 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-qualified components.
The TPSMC series is part of Vishay's PAR® (Protective Avalanche Rectifier) platform, engineered specifically for demanding transient suppression in automotive, industrial, and telecom applications where sustained high-temperature operation and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMC22HE3/9AT under surge conditions?
The TPSMC22HE3/9AT has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 49 A using a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures downstream ICs remain within safe operating voltage limits during transient events. The TPSMC22HE3/9AT maintains this clamping performance consistently across its operational temperature range up to 185 °C.
Is the TPSMC22HE3/9AT qualified for automotive applications?
Yes, the TPSMC22HE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use with the HE3 suffix. It meets all stress tests defined in the AEC-Q101 standard including high-temperature operating life, temperature cycling, and surge robustness. The TPSMC22HE3/9AT is commonly deployed in engine control units, ADAS camera modules, and body electronics where sustained 185 °C junction operation and ISO 7637-2 compliance are required.
What is the difference between TPSMC22HE3/9AT and TPSMC22AHM3/9AT?
The TPSMC22HE3/9AT and TPSMC22AHM3/9AT share identical electrical specifications, thermal ratings, and mechanical dimensions. The sole difference is material composition: the HM3 variant uses a halogen-free molding compound and carries the HM3 suffix, whereas the HE3 version is RoHS-compliant but not halogen-free. Both are AEC-Q101 qualified, and the TPSMC22HE3/9AT remains fully interchangeable in function and layout with the TPSMC22AHM3/9AT unless halogen-free compliance is mandated.
Does the TPSMC22HE3/9AT have polarity markings, and how is it oriented on the PCB?
Yes, the TPSMC22HE3/9AT features a cathode band printed on the package body - the end with the band is the cathode terminal. During PCB layout, the cathode must be connected to the reference node (typically ground or system return), and the anode to the line being protected. Incorrect orientation will prevent proper clamping action, as the device is unidirectional and only avalanches in reverse bias. The SMC (DO-214AB) outline confirms pin 1 as cathode per JEDEC standard.
What is the reverse leakage current of the TPSMC22HE3/9AT at its stand-off voltage?
The TPSMC22HE3/9AT exhibits a maximum reverse leakage current (IR) of 1.0 µA at its stand-off voltage (VWM) of 18.8 V and ambient temperature of 25 °C. At elevated junction temperatures up to 150 °C, leakage increases to a maximum of 10 µA - still well within acceptable limits for low-power sensor biasing and battery-backed circuits. This low leakage ensures minimal impact on system quiescent current and signal integrity.
TPSMC22HE3/9AT 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):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 47A
- 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)
TPSMC22HE3/9AT FAQ
1.How can I place an order for TPSMC22HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC22HE3/9AT 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 TPSMC22HE3/9AT reliable?
The price and inventory of TPSMC22HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC22HE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC22HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC22HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC22HE3/9AT?
TPSMC22HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC22HE3/9AT 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 TPSMC22HE3/9AT?
For technical support, including TPSMC22HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC22HE3/9AT requirements.
6.How does Aetrix verify that TPSMC22HE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC22HE3/9AT 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 TPSMC22HE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC22HE3/9AT?
All TPSMC22HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC22HE3/9AT, 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 TPSMC22HE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC22HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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