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Vishay General Semiconductor - Diodes Division TPSMA30-4HE3_B/I
- Part No.:
- TPSMA30-4HE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30-4HE3_B/I.pdf
- Description:
- TVS DIODE 400W SMA DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,921
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Product details
Overview
TPSMA30-4HE3_B/I 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 a 30 V nominal breakdown voltage (VBR = 28.5–31.5 V), 400 W peak pulse power (10/1000 µs), 41.4 V maximum clamping voltage at 9.7 A, 1.0 W steady-state power dissipation, and 185 °C maximum junction temperature - enabling robust protection in automotive and industrial power rails.
For engineers reviewing the TPSMA30-4HE3_B/I datasheet, TPSMA30-4HE3_B/I pinout, TPSMA30-4HE3_B/I application, or TPSMA30-4HE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 10/1000 µs waveform clamping performance, thermal derating above 25 °C, and compatibility with automated SMT assembly using J-STD-002-compliant matte tin terminals.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protection device, leveraging passivated anisotropic rectifier technology to deliver fast response time (<1 ns) and low incremental surge resistance. Its unidirectional configuration allows integration into DC-biased circuits where reverse conduction must be blocked until breakdown threshold is exceeded.
The device is rated for 400 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, and supports repetitive surge events when thermally managed per Fig. 2 derating curves. Junction temperature range spans –65 °C to +185 °C, meeting high-reliability requirements for under-hood automotive electronics and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 28.5 V min / 30.0 V nom / 31.5 V max at 1.0 mA - defines precise clamping initiation threshold for overvoltage detection |
| Stand-off Voltage VWM | 25.6 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| Clamping Voltage VC | 41.4 V at 9.7 A IPPM - actual voltage seen by protected circuit during worst-case 10/1000 µs surge |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - determines surge energy absorption capability without failure |
| Junction Temperature Range | –65 °C to +185 °C - enables operation in extreme environments including automotive engine compartments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and cathode band marking |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
SMA (DO-214AC) package with axial lead configuration: molded epoxy body, matte tin-plated terminals, cathode indicated by color band. Complies with UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to lower-potential side of protected line; defines unidirectional conduction path |
| Cathode | Clamping output / Surge return path | Connected to higher-potential side or ground; carries surge current during transient events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage (<1 µA at VWM) across full temperature range |
| TJ = 185 °C capability | Supports sustained operation in high-ambient environments without thermal runaway or parameter drift |
| 400 W peak pulse power (10/1000 µs) | Provides sufficient energy handling for ISO 7637-2 pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge immunity |
| Meets MSL Level 1 (260 °C reflow) | Allows single-pass lead-free reflow soldering without moisture-induced damage |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications requiring zero defects and long-term field reliability |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges above 30 V. Use Value: Limits transient voltage to ≤41.4 V at 9.7 A, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to EFT and surge noise. IC Role / Device Role / Timing Role: Low-capacitance clamping element on 4–20 mA or 0–10 V signal paths to suppress coupling-induced spikes. Use Value: Maintains signal integrity with <1 µA leakage at 25.6 V, avoiding offset errors while responding in <1 ns. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on +5 V/+9 V/+15 V output rails to absorb flyback spikes from regulator switching. Use Value: Withstands 400 W pulses without degradation, ensuring adapter compliance with UL 62368-1 transient immunity requirements. |
Use Scenario: DC power feed protection in PoE-powered base stations and remote radio units. IC Role / Device Role / Timing Role: Bidirectional-unaware clamping device on 48 V DC input to absorb lightning-induced common-mode surges. Use Value: Delivers 41.4 V clamping at 9.7 A with 185 °C TJ rating, supporting outdoor deployment in tropical climates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same SMA package, 30 V VBR, but rated for 400 W at 10/1000 µs and 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 |
| TPSMA30AHM3_B/I | Identical electrical specs and AEC-Q101 qualification, but halogen-free molding compound and JESD 201 Class 2 whisker resistance | Required for RoHS+halogen-free compliance programs (e.g., EU automotive Tier 1 supply chains) | Choose when material compliance mandates exceed standard RoHS requirements |
Compared with SMAJ30A and TPSMA30AHM3_B/I, the TPSMA30-4HE3_B/I provides AEC-Q101 qualification and RoHS compliance in a cost-optimized variant, making it ideal for automotive subsystems where halogen-free content is not mandated but high-reliability validation is essential.
Availability
TPSMA30-4HE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feeders requiring stable component supply, consistent AEC-Q101 qualification, and long-term production continuity.
Supply support for TPSMA30-4HE3_B/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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive-grade validation.
The TPSMA30-4HE3_B/I belongs to Vishay's PAR® series of surface-mount TVS diodes, engineered specifically for high-temperature stability and repeatable clamping behavior in harsh-environment power and signal protection applications.
FAQ
What is the exact breakdown voltage range for TPSMA30-4HE3_B/I?
The TPSMA30-4HE3_B/I has a guaranteed breakdown voltage range of 28.5 V minimum to 31.5 V maximum at 1.0 mA test current, with a nominal value of 30.0 V. This specification is measured per ANSI/IEEE C62.35 and confirmed across production lots per Vishay Document Number 88405, Revision 23-Jan-2024. The TPSMA30-4HE3_B/I maintains this tolerance under thermal derating up to 185 °C junction temperature.
Is TPSMA30-4HE3_B/I AEC-Q101 qualified?
Yes, the TPSMA30-4HE3_B/I is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88405) under "MECHANICAL DATA" and "Notes" sections. The HE3 suffix denotes RoHS-compliant and AEC-Q101-qualified construction, validated for automotive applications including engine control, body electronics, and ADAS subsystems.
What is the maximum clamping voltage of TPSMA30-4HE3_B/I at rated surge current?
The TPSMA30-4HE3_B/I exhibits a maximum clamping voltage (VC) of 41.4 V at its rated peak pulse current (IPPM) of 9.7 A, tested with a 10/1000 µs waveform. This value ensures protected circuits remain below critical voltage thresholds during standardized surge events such as ISO 7637-2 Pulse 5a, and is verified per Figure 3 and Table on page 2 of the official datasheet.
Does TPSMA30-4HE3_B/I support lead-free reflow soldering?
Yes, the TPSMA30-4HE3_B/I meets MSL Level 1 per J-STD-020 and withstands a maximum peak reflow temperature of 260 °C, making it fully compatible with standard lead-free reflow profiles. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards, ensuring reliable wetting and joint formation in automated SMT lines.
What is the polarity configuration of TPSMA30-4HE3_B/I?
The TPSMA30-4HE3_B/I is a unidirectional TVS diode, meaning it conducts only in reverse bias above its breakdown voltage and blocks forward current like a standard rectifier. Polarity is marked by a cathode band on the SMA (DO-214AC) package body, and the device must be oriented with cathode toward the higher-potential node in the protected circuit.
TPSMA30-4HE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
TPSMA30-4HE3_B/I FAQ
1.How can I place an order for TPSMA30-4HE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30-4HE3_B/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 TPSMA30-4HE3_B/I reliable?
The price and inventory of TPSMA30-4HE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA30-4HE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMA30-4HE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30-4HE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30-4HE3_B/I?
TPSMA30-4HE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30-4HE3_B/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 TPSMA30-4HE3_B/I?
For technical support, including TPSMA30-4HE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30-4HE3_B/I requirements.
6.How does Aetrix verify that TPSMA30-4HE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMA30-4HE3_B/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 TPSMA30-4HE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMA30-4HE3_B/I?
All TPSMA30-4HE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30-4HE3_B/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 TPSMA30-4HE3_B/I part is unused and in its original packaging.
Return procedure for TPSMA30-4HE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30-4HE3_B/I Tags
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