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Vishay General Semiconductor - Diodes Division TPSMC30AHE3_B/I
- Part No.:
- TPSMC30AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC30AHE3_B/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,440
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Product details
Overview
TPSMC30AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping inductive switching transients and lightning-induced surges on power and signal lines. It features a 30 V nominal breakdown voltage (VBR = 28.5–31.5 V at 1 mA), 25.6 V stand-off voltage (VWM), 41.4 V maximum clamping voltage at 36.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the TPSMC30AHE3_B/I datasheet, TPSMC30AHE3_B/I pinout, TPSMC30AHE3_B/I application, or TPSMC30AHE3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, TJ = 185 °C operation, unidirectional polarity, low clamping ratio (VC/VWM ≈ 1.62), and RoHS-compliant matte tin-plated terminals suitable for automotive and industrial surge protection.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping under high-temperature stress (TJ up to 185 °C) and repeated surge events. Its junction passivation ensures long-term reliability in automotive under-hood and industrial control environments where thermal cycling and humidity are critical.
The device operates exclusively in unidirectional mode with cathode-band polarity marking, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 1500 W peak pulse power is rated on 0.31" × 0.31" copper pads - a layout requirement directly tied to thermal dissipation and clamping performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 V / 30.0 V / 31.5 V at 1 mA - defines precise voltage threshold at which avalanche conduction begins; critical for matching system overvoltage tolerance. |
| VWM | 25.6 V - maximum continuous reverse working voltage; must exceed normal operating rail voltage to prevent leakage or false triggering. |
| VC @ IPPM | 41.4 V at 36.2 A - clamping voltage during 10/1000 µs surge; determines protected IC's maximum transient exposure level. |
| PPPM | 1500 W - peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges when properly mounted. |
| TJ max | +185 °C - extended junction temperature rating supports under-hood automotive use and high-ambient industrial deployments without derating. |
| Polarity | Unidirectional - blocks reverse current only; requires correct orientation relative to protected line polarity (cathode to positive rail). |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 8.13 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
TPSMC30AHE3_B/I is housed in the SMC (DO-214AB) package: a rectangular surface-mount case with molded epoxy body, matte tin-plated leads, and cathode band marking on one end. Dimensions: 8.13 mm × 6.22 mm × 2.62 mm (L × W × H). Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for full 1500 W rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to lower-potential side of protected line. | Must be routed to ground or negative rail in unidirectional configuration; determines direction of surge current flow during clamping. |
| Cathode | Current exit point during avalanche conduction; marked by color band on package body. | Connected to protected line (e.g., 24 V supply or CAN_H); defines clamping reference and polarity-sensitive placement in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors; supports PPAP documentation and zero-defect manufacturing requirements. |
| Junction passivation | Optimized die surface treatment prevents moisture ingress and metallization degradation, enabling >1000-hour HTOL stability at 150 °C. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive gate drivers and ADC inputs. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak, eliminating bake requirements and reducing assembly cost. |
| 185 °C junction capability | Enables direct placement near heat sources (e.g., power MOSFETs, DC-DC inductors) without thermal derating or heatsinking. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 24 V battery-supplied ECUs from load dump (ISO 16750-2) and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping surges above 30 V while remaining inert below 25.6 V. Use Value: Withstands 1500 W pulses and operates up to 185 °C, enabling compact placement near power converters without thermal compromise. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal traces, referenced to local ground plane. Use Value: 41.4 V clamping voltage ensures downstream op-amps and ADCs remain within absolute maximum ratings during ±8 kV contact ESD (IEC 61000-4-2). |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered network switches and base stations against induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary-level TVS on main DC input before DC-DC conversion stage, absorbing bulk energy before downstream filtering. Use Value: 1500 W rating and 36.2 A IPPM handle multi-kA lightning-induced surges when coordinated with upstream GDTs or MOVs. |
Use Scenario: Adding secondary-level surge immunity to USB Type-C ports in laptops and docking stations exposed to hot-plug transients. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line, positioned after ESD diode array but before power delivery controller. Use Value: 25.6 V VWM allows compatibility with USB PD 3.0 20 V profiles while clamping to 41.4 V - well below 42 V absolute max of common PD controllers. |
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 VBR range (28.5–31.5 V), but lower PPPM = 400 W and smaller SMA package; TJ max = 150 °C. | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 or load dump. | Select SMAJ30A only for space-constrained consumer applications with <400 W surge exposure and ambient <125 °C. |
| TPSMC33AHE3_B/I | Higher VBR (31.4–34.7 V), VWM = 28.2 V, VC = 45.7 V at 32.8 A; identical package, AEC-Q101, and 1500 W rating. | Better suited for 28–30 V nominal systems (e.g., dual-battery trucks) where 30 V VWM would risk leakage or false triggering. | Choose TPSMC33AHE3_B/I when protecting 28 V rails with tighter margin between VWM and operating voltage. |
Compared with SMAJ30A and TPSMC33AHE3_B/I, the TPSMC30AHE3_B/I provides optimal balance of 30 V system compatibility, 1500 W surge capacity, and AEC-Q101 reliability - making it the preferred choice for 24 V automotive and industrial power rail protection where VWM margin and thermal endurance are critical.
Availability
TPSMC30AHE3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom DC power supplies, and consumer USB PD systems requiring stable component supply across long production lifecycles.
Supply support for TPSMC30AHE3_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, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-grade performance.
The TPSMC30AHE3_B/I belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for demanding transient suppression in automotive power systems and industrial equipment where AEC-Q101 compliance and 185 °C operation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMC30AHE3_B/I under standard test conditions?
The TPSMC30AHE3_B/I has a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current of 36.2 A using the 10/1000 µs waveform. This value is measured at TA = 25 °C with specified mounting conditions (0.31" × 0.31" copper pads). The clamping voltage ensures downstream components remain within safe operating limits during surge events, and the TPSMC30AHE3_B/I maintains this performance across its full -65 °C to +185 °C junction temperature range.
Is the TPSMC30AHE3_B/I suitable for automotive applications?
Yes, the TPSMC30AHE3_B/I is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS compliance and automotive qualification. It supports junction temperatures up to +185 °C and meets MSL Level 1 for lead-free reflow, making it appropriate for under-hood engine control units, body electronics, and ADAS modules. Its unidirectional configuration and 25.6 V stand-off voltage align with 24 V vehicle electrical systems, and the TPSMC30AHE3_B/I is explicitly listed in Vishay's automotive ordering matrix.
What does the "HE3" and "B/I" suffix in TPSMC30AHE3_B/I signify?
The "HE3" suffix denotes RoHS-compliant, matte tin-plated terminals and AEC-Q101 qualification. The "B" indicates revision level B of the device specification, and "I" specifies packaging in 13-inch diameter plastic tape and reel with a base quantity of 3500 units. This packaging format is optimized for high-volume SMT assembly lines and ensures consistent feeding performance in automated pick-and-place equipment used for TPSMC30AHE3_B/I placement.
How does the TPSMC30AHE3_B/I compare to bidirectional TVS diodes in surge protection design?
The TPSMC30AHE3_B/I is unidirectional and intended for DC line protection where polarity is fixed - such as 24 V supply rails or sensor ground-referenced signals. Unlike bidirectional TVS diodes, it does not conduct in forward bias beyond ~3.5 V, offering lower leakage and higher VWM margin. For AC or differential lines (e.g., RS-485, CAN), a bidirectional variant would be required; the TPSMC30AHE3_B/I is not suitable for those topologies due to its inherent polarity dependence.
What PCB layout considerations are critical for achieving the full 1500 W rating of the TPSMC30AHE3_B/I?
To achieve the full 1500 W peak pulse power rating, the TPSMC30AHE3_B/I must be mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal, as defined in the Vishay datasheet. Smaller pads reduce thermal dissipation and cause premature failure under surge. Additionally, minimize trace inductance between the TVS and protected node, avoid vias in high-current paths, and ensure solid ground plane connection - all essential to preserve the TPSMC30AHE3_B/I's clamping response and energy-handling capability.
TPSMC30AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 36.2A
- 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 (SMC)
TPSMC30AHE3_B/I FAQ
1.How can I place an order for TPSMC30AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC30AHE3_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 TPSMC30AHE3_B/I reliable?
The price and inventory of TPSMC30AHE3_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 TPSMC30AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC30AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC30AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC30AHE3_B/I?
TPSMC30AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC30AHE3_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 TPSMC30AHE3_B/I?
For technical support, including TPSMC30AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC30AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC30AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC30AHE3_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 TPSMC30AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC30AHE3_B/I?
All TPSMC30AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC30AHE3_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 TPSMC30AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC30AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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