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Vishay General Semiconductor - Diodes Division TPSMA22HE3_A/I
- Part No.:
- TPSMA22HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA22HE3_A/I.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,118
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Product details
Overview
TPSMA22HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, rated for 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 400 W peak pulse power (10/1000 µs), 30.6 V clamping voltage at 13.1 A surge current, and 185 °C maximum junction temperature - deployed for robust overvoltage protection of automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the TPSMA22HE3_A/I datasheet, TPSMA22HE3_A/I pinout, TPSMA22HE3_A/I application, or TPSMA22HE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity, MSL Level 1 moisture sensitivity, and verified 185 °C thermal capability under high-reliability automotive and industrial transients.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping performance across -65 °C to +185 °C operating range. Its 10/1000 µs waveform response enables reliable suppression of lightning-induced surges and inductive switching transients on low-voltage DC rails.
The device exhibits low incremental surge resistance and fast response time (<1 ns), with a typical VBR temperature coefficient of 0.084 %/°C and maximum reverse leakage of 1.0 µA at 18.8 V stand-off voltage (VWM) and 150 °C junction temperature.
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 under transient stress |
| VWM | 18.8 V - maximum continuous reverse working voltage before significant leakage occurs |
| VC @ IPPM | 30.6 V at 13.1 A - clamped voltage during 400 W surge, limiting downstream IC stress |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capacity without failure |
| TJ max. | +185 °C - enables operation in under-hood automotive and high-ambient industrial environments |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation |
| MSL Level | Level 1 (J-STD-020) - supports standard SMT reflow without baking preconditioning |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads; cathode indicated by color band; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line's lower-potential side (e.g., GND or return path) in unidirectional configuration |
| Cathode | Current exit terminal during forward conduction; avalanche node during reverse surge | Connected to protected line's higher-potential side (e.g., signal or supply rail); marked by band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability per stress test requirements including HTOL, TC, and HAST |
| 185 °C junction rating | Supports sustained operation in engine control units, battery management systems, and industrial motor drives |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surge events on 12 V/24 V DC buses |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage margin between clamp level and protected IC's absolute maximum rating |
| MSL Level 1 | Enables direct placement into high-volume SMT lines without dry-pack or bake handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp positive transients above 18.8 V while remaining transparent during normal operation. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs exposed to up to ±100 V transients per ISO 7637-2 Pulse 5a. | Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges from relay coils and solenoid drivers. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input channels, absorbing repetitive 400 W pulses without degradation over >100,000 cycles. Use Value: Eliminates need for external series impedance or RC snubbers due to sub-1 ns response and low dynamic impedance. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
Use Scenario: Guarding 12 V bias rails in optical network terminals and DSL modems against lightning-induced common-mode surges entering via AC adapter or Ethernet port. IC Role / Device Role / Timing Role: Primary shunt protector on secondary-side DC distribution net, coordinated with upstream MOVs and gas discharge tubes. Use Value: Maintains <1 µA leakage at 18.8 V to avoid standby current drift in always-on telecom equipment. | Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart washing machines and HVAC fan modules from brush-commutator noise and back-EMF spikes. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to motor driver ICs, minimizing trace inductance to ensure effective clamping below 30.6 V. Use Value: Enables use of cost-optimized 30 V-rated MOSFETs instead of derated 40 V+ devices, reducing conduction losses. |
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 SMA package, 22 V VBR, but 400 W rating at 10/1000 µs; no AEC-Q101 qualification; TJ max = 150 °C | Not suitable for automotive under-hood use; limited to commercial/industrial ambient ≤85 °C | Select when AEC-Q101 compliance is unnecessary and cost is primary constraint |
| SMCJ22A | Larger SMC (DO-214AB) package; same 22 V VBR; 1500 W PPPM; TJ max = 175 °C; AEC-Q101 available in HE3 variant | Requires larger PCB footprint; suited for higher-energy transients (e.g., 12 V battery line protection) | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 or when higher single-pulse robustness is required |
Compared with SMAJ22A and SMCJ22A, the TPSMA22HE3_A/I uniquely balances AEC-Q101 qualification, 185 °C operation, and compact SMA footprint - making it optimal for space-constrained automotive sensor nodes and industrial edge controllers where thermal headroom and qualification rigor are non-negotiable.
Availability
TPSMA22HE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and telecom power rail protection requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for TPSMA22HE3_A/I 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 TPSMA22HE3_A/I belongs to Vishay's PAR® (Protected Avalanche Rectifier) TVS family, engineered specifically for high-temperature, high-reliability transient suppression in automotive and industrial environments where extended junction life and AEC-Q101 validation are mandatory.
FAQ
What is the exact breakdown voltage range for TPSMA22HE3_A/I at 1 mA test current?
The TPSMA22HE3_A/I has a guaranteed breakdown voltage (VBR) range of 20.9 V (minimum) to 23.1 V (maximum) at 1 mA test current, with a nominal value of 22.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed in Vishay's official datasheet revision 23-Jan-2024 (Document Number: 88405). The TPSMA22HE3_A/I maintains this tolerance across its full operating temperature range.
Is TPSMA22HE3_A/I qualified to AEC-Q101, and what does that mean for automotive use?
Yes, the TPSMA22HE3_A/I is AEC-Q101 qualified - explicitly stated in the Vishay datasheet under "MECHANICAL DATA" and "Notes" sections. This qualification confirms successful completion of stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST), making the TPSMA22HE3_A/I suitable for automotive applications such as body control modules, ADAS sensors, and powertrain subsystems where reliability under thermal and electrical stress is critical.
What is the clamping voltage of TPSMA22HE3_A/I at its rated peak pulse current?
The TPSMA22HE3_A/I clamps to a maximum of 30.6 V at its peak pulse current (IPPM) of 13.1 A, tested with a 10/1000 µs waveform. This clamping voltage is measured under standardized conditions (mounted on 0.2" × 0.2" copper pads) and ensures protected downstream components - such as 3.3 V or 5 V microcontrollers - remain within safe voltage limits during surge events. The TPSMA22HE3_A/I achieves this with a clamping ratio (VC/VBR) of approximately 1.39.
Can TPSMA22HE3_A/I be used in bidirectional configurations?
No, the TPSMA22HE3_A/I is unidirectional only, as clearly specified in the Vishay datasheet under "FEATURES". It protects against positive-going transients on the cathode side relative to anode. For bidirectional protection, two TPSMA22HE3_A/I devices must be connected in series opposing configuration, or a dedicated bidirectional TVS (e.g., TPSMA22CA) should be selected. Using the TPSMA22HE3_A/I in reverse-biased mode beyond its specified VWM risks premature breakdown or parametric shift.
What is the maximum junction temperature rating for TPSMA22HE3_A/I, and how does it impact board layout?
The TPSMA22HE3_A/I is rated for a maximum junction temperature (TJ) of +185 °C, enabling operation in high-ambient environments like engine compartments or enclosed industrial enclosures. To sustain this rating, the PCB layout must follow Vishay's recommended pad dimensions (0.2" × 0.2" copper per terminal) and thermal vias to internal ground planes. Derating curves in Figure 2 of the datasheet show that at 125 °C ambient, the device retains ~75 % of its 400 W pulse rating - a key consideration when designing for TPSMA22HE3_A/I thermal margin.
TPSMA22HE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 12.5A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA22HE3_A/I FAQ
1.How can I place an order for TPSMA22HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA22HE3_A/I 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 TPSMA22HE3_A/I reliable?
The price and inventory of TPSMA22HE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA22HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA22HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA22HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA22HE3_A/I?
TPSMA22HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA22HE3_A/I 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 TPSMA22HE3_A/I?
For technical support, including TPSMA22HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA22HE3_A/I requirements.
6.How does Aetrix verify that TPSMA22HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA22HE3_A/I 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 TPSMA22HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA22HE3_A/I?
All TPSMA22HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA22HE3_A/I, 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 TPSMA22HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA22HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA22HE3_A/I Tags
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