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Vishay General Semiconductor - Diodes Division TPSMA30AHE3_B/H
- Part No.:
- TPSMA30AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA30AHE3_B/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,194
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Product details
Overview
TPSMA30AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 30 V 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 operation up to +185 °C junction temperature - used in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the TPSMA30AHE3_B/H datasheet, TPSMA30AHE3_B/H pinout, TPSMA30AHE3_B/H application, or TPSMA30AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HE3 suffix), MSL Level 1 rating, 185 °C thermal capability, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional architecture provides fast response time and excellent clamping performance during inductive switching events or lightning-induced surges.
Designed for automotive-grade reliability, TPSMA30AHE3_B/H meets AEC-Q101 requirements and supports operation across -65 °C to +185 °C junction temperature range. The device is rated for repetitive 10/1000 µs waveform pulses at 0.01 % duty cycle and exhibits a typical VBR temperature coefficient of +0.088 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 / 30.0 / 31.5 V - defines precise voltage threshold where avalanche conduction begins under 1 mA test current |
| VWM | 25.6 V - maximum continuous reverse working voltage before leakage exceeds 1 µA at 25 °C |
| VC @ IPPM | 41.4 V - clamped voltage seen by protected circuit during full 9.7 A surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power handling per 10/1000 µs waveform, enabling robust ESD/lightning protection |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation in circuit |
| MSL Level | Level 1 (J-STD-020) - allows unlimited floor life and reflow up to 260 °C peak without baking |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band. Compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or return path); conducts during surge clamp when cathode is at higher potential |
| Cathode | Current exit point during forward conduction | Marked with band; connected to protected line (e.g., 24 V rail); determines directionality and clamping polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| 185 °C junction rating | Supports placement near heat sources (e.g., power converters) without derating in most industrial designs |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive ICs |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge (4 kV/2 Ω) on 24 V systems with margin |
| MSL Level 1 | Eliminates pre-reflow baking requirement, reducing manufacturing cost and process complexity |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp positive transients while preserving DC bias. Use Value: Enables compliance with AEC-Q100 stress tests and extends lifetime of automotive-grade microcontrollers and interface ICs. | Use Scenario: Safeguarding 24 V DC input rails of PLC modules and motor drives against inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power entry point, coordinated with upstream fuses and downstream regulators. Use Value: Prevents catastrophic failure of DC/DC converters and gate drivers during field service or system fault conditions. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE controllers from ESD and fast transient bursts on RJ45 ports. IC Role / Device Role / Timing Role: Secondary-level protection after common-mode chokes, absorbing differential-mode surges on data pairs. Use Value: Maintains signal integrity while meeting IEC 61000-4-2 Level 4 (8 kV contact) and IEC 61000-4-4 (2 kV) immunity requirements. | Use Scenario: Clamping output transients in USB-C PD adapters and multi-port chargers during hot-plug and short-circuit events. IC Role / Device Role / Timing Role: Final-stage transient suppressor on regulated 5–20 V output rails, guarding downstream USB controllers and battery management ICs. Use Value: Reduces risk of user-reported "port reset" failures and improves OEM warranty return rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same SMA package, 30 V VBR, but rated for 400 W with 10/1000 µs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select SMAJ30A when AEC-Q101 is not required and cost sensitivity outweighs long-term reliability validation needs |
| TPSMA30AHM3_B/H | Identical electrical specs and AEC-Q101 qualification; halogen-free molding compound and whisker-resistant plating | Required for RoHS-compliant, halogen-free BOMs in EU/automotive Tier 1 programs | Choose TPSMA30AHM3_B/H when material compliance (IEC 61249-2-21) or JESD201 Class 2 whisker resistance is mandated |
Compared with SMAJ30A and TPSMA30AHM3_B/H, TPSMA30AHE3_B/H delivers identical surge performance and automotive qualification but uses standard RoHS-compliant (non-halogen-free) epoxy - making it optimal for cost-sensitive AEC-Q101 designs where halogen content is unrestricted.
Availability
TPSMA30AHE3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power input stages, telecom line interfaces, and consumer power adapter output circuits requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA30AHE3_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 devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The TPSMA series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor family, engineered specifically for high-reliability protection in automotive, industrial, and telecom infrastructure applications where thermal stability and surge endurance are critical.
FAQ
What is the breakdown voltage tolerance for TPSMA30AHE3_B/H?
The TPSMA30AHE3_B/H has a specified breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1.0 mA test current, corresponding to ±5 % tolerance around the nominal 30 V rating. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting consistent design margins in safety-critical automotive systems.
Is TPSMA30AHE3_B/H compatible with lead-free reflow processes?
Yes, TPSMA30AHE3_B/H is fully compatible with lead-free reflow soldering. It meets MSL Level 1 per J-STD-020 and supports a maximum peak reflow temperature of 260 °C. The matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, ensuring reliable wetting and joint integrity without post-solder baking.
Does TPSMA30AHE3_B/H support bidirectional transient suppression?
No, TPSMA30AHE3_B/H is unidirectional only. It clamps positive transients relative to its cathode terminal and does not protect against negative excursions. For bidirectional protection, a separate device such as TPSMA30CA or dual-diode configuration is required - the datasheet explicitly states "Available in uni-directional polarity only."
What is the maximum clamping voltage of TPSMA30AHE3_B/H at rated surge current?
The maximum clamping voltage (VC) of TPSMA30AHE3_B/H is 41.4 V at 9.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value represents the worst-case voltage imposed on the protected circuit during full-rated surge, directly determining the safe operating margin for downstream components like 36 V-rated MOSFETs or 40 V-input regulators.
How does the temperature coefficient affect VBR performance of TPSMA30AHE3_B/H?
TPSMA30AHE3_B/H has a typical VBR temperature coefficient (αT) of +0.088 %/°C. This means VBR increases linearly with junction temperature - e.g., at 125 °C, VBR rises ~8.8 V above its 25 °C value. Designers must account for this shift when setting clamping margins in high-ambient environments like engine compartments.
TPSMA30AHE3_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):
- 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)
TPSMA30AHE3_B/H FAQ
1.How can I place an order for TPSMA30AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA30AHE3_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 TPSMA30AHE3_B/H reliable?
The price and inventory of TPSMA30AHE3_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 TPSMA30AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA30AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA30AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA30AHE3_B/H?
TPSMA30AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA30AHE3_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 TPSMA30AHE3_B/H?
For technical support, including TPSMA30AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA30AHE3_B/H requirements.
6.How does Aetrix verify that TPSMA30AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA30AHE3_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 TPSMA30AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA30AHE3_B/H?
All TPSMA30AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA30AHE3_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 TPSMA30AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMA30AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA30AHE3_B/H Tags
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