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Vishay General Semiconductor - Diodes Division TPSMA20AHE3_B/H
- Part No.:
- TPSMA20AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA20AHE3_B/H.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,153
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Product details
Overview
TPSMA20AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 20 V breakdown voltage (VBR = 19.0–21.0 V), 400 W peak pulse power (10/1000 µs), 14.4 V maximum clamping voltage at 14.4 A surge current, and operates up to +185 °C junction temperature - used in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMA20AHE3_B/H datasheet, TPSMA20AHE3_B/H pinout, TPSMA20AHE3_B/H application, or TPSMA20AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 1.0 W steady-state power dissipation, low incremental surge resistance, and compatibility with reflow soldering per J-STD-020 MSL level 1.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to ESD and lightning-induced surges. Its 10/1000 µs waveform rating supports repetitive transient suppression with 0.01 % duty cycle, and it delivers consistent clamping performance across -65 °C to +185 °C operating range.
The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 1.0 µA max reverse leakage at 17.1 V stand-off voltage, and maintains stable VBR with ±0.082 %/°C temperature coefficient - enabling reliable overvoltage protection in automotive ECUs and industrial motor drives where thermal derating must be precisely modeled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - ensures precise triggering above system nominal voltage while accommodating process variation |
| VWM | 17.1 V - defines maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 27.7 V - clamping voltage during 14.4 A 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient energy absorption capability under standardized surge waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - protects against positive-going transients only; requires external circuit design for bidirectional needs |
| MSL Level | Level 1 (260 °C peak) - supports standard lead-free reflow without moisture sensitivity concerns |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, cathode indicated by color band. Molded compound meets UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or clamping | Connected to protected line (e.g., VIN) when used in shunt configuration |
| Cathode | Current exit point during clamping; marked with band | Connected to ground or lower-potential reference to divert surge energy |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 185 °C junction rating | Enables placement near heat sources (e.g., power MOSFETs, DC-DC converters) without derating penalties |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time) |
| 400 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment |
| MSL Level 1 | Eliminates bake-out requirement prior to SMT assembly, reducing manufacturing cost and risk |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends from load dump and ISO 7637-2 pulses in engine control modules. IC Role / Device Role / Timing Role: Shunt-clamping TVS diode placed between signal line and chassis ground. Use Value: Clamps transients to ≤27.7 V within nanoseconds, preserving 3.3 V/5 V interface IC integrity under 12 V system faults. | Use Scenario: Safeguarding AC-DC and DC-DC converter inputs against lightning-induced surges in factory automation PLCs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input rail before rectification and filtering. Use Value: Absorbs 400 W surge energy without failure, maintaining system uptime during outdoor installation surges. |
| Consumer Power Adapter Output | Telecom Line Interface |
Use Scenario: Secondary-side transient suppression on USB-C PD adapter 20 V output rails to meet UL 62368-1 surge requirements. IC Role / Device Role / Timing Role: Fast-response shunt protector downstream of synchronous rectifier. Use Value: Limits output voltage excursion to 27.7 V during hot-plug events, preventing damage to connected devices. | Use Scenario: Surge protection on Ethernet PHY power pins and bias rails in PoE-powered access points. IC Role / Device Role / Timing Role: Standoff-rated clamp on 3.3 V/5 V auxiliary supply lines feeding PHY ICs. Use Value: Maintains <1.0 µA leakage at 17.1 V, avoiding quiescent current impact on low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Same SMA package, 20 V VBR, but rated for 400 W with 1.0 µA IR at VWM; not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| TPSMA20AHM3_B/H | Identical electrical specs; halogen-free molding compound and whisker-tested terminations | Required for RoHS+halogen-free compliance programs (e.g., EU automotive Tier 1) | Choose when material compliance mandates exceed standard RoHS requirements |
Compared with SMAJ20A and TPSMA20AHM3_B/H, the TPSMA20AHE3_B/H provides AEC-Q101 qualification and standard RoHS compliance in a cost-optimized variant - making it optimal for automotive production where qualification is mandatory but halogen-free content is not specified.
Availability
TPSMA20AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power supply input stages, and consumer power adapter output rails requiring stable component supply and full traceability.
Supply support for TPSMA20AHE3_B/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, MOSFETs, and optoelectronics with emphasis on high-reliability and high-temperature performance.
The TPSMA series belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for robust, high-temperature transient suppression in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance for TPSMA20AHE3_B/H?
The TPSMA20AHE3_B/H has a breakdown voltage (VBR) range of 19.0 V (min) to 21.0 V (max) at 1.0 mA test current, with a typical value of 20.0 V. This ±5 % tolerance ensures predictable clamping onset while accommodating manufacturing variance and thermal drift across its -65 °C to +185 °C operating range.
Is TPSMA20AHE3_B/H AEC-Q101 qualified?
Yes, TPSMA20AHE3_B/H is AEC-Q101 qualified. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, validated per stress tests including HTGB, H3TRB, and temperature cycling - confirming suitability for automotive powertrain and body electronics applications.
What is the maximum clamping voltage of TPSMA20AHE3_B/H under surge conditions?
The TPSMA20AHE3_B/H has a maximum clamping voltage (VC) of 27.7 V at 14.4 A peak pulse current (IPPM) using the 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuits during standardized surge events, critical for ensuring downstream IC survival.
Does TPSMA20AHE3_B/H support lead-free reflow soldering?
Yes, TPSMA20AHE3_B/H meets J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C, making it fully compatible with standard lead-free reflow profiles. Its matte tin-plated terminals are solderable per J-STD-002 and JESD 22-B102, eliminating pre-bake requirements.
What is the stand-off voltage (VWM) for TPSMA20AHE3_B/H?
The stand-off voltage (VWM) for TPSMA20AHE3_B/H is 17.1 V - the maximum DC or continuous reverse voltage that can be applied without exceeding 1.0 µA leakage current at 25 °C. This parameter ensures minimal power loss and noise coupling during normal operation while allowing safe margin below VBR.
TPSMA20AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- 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)
TPSMA20AHE3_B/H FAQ
1.How can I place an order for TPSMA20AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA20AHE3_B/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 TPSMA20AHE3_B/H reliable?
The price and inventory of TPSMA20AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA20AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA20AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA20AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA20AHE3_B/H?
TPSMA20AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA20AHE3_B/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 TPSMA20AHE3_B/H?
For technical support, including TPSMA20AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA20AHE3_B/H requirements.
6.How does Aetrix verify that TPSMA20AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA20AHE3_B/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 TPSMA20AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA20AHE3_B/H?
All TPSMA20AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA20AHE3_B/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 TPSMA20AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMA20AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA20AHE3_B/H Tags
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