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Vishay General Semiconductor - Diodes Division TPSMA11AHE3_B/H
- Part No.:
- TPSMA11AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA11AHE3_B/H.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,565
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Product details
Overview
TPSMA11AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 11.0 V nominal breakdown voltage (VBR), 9.40 V stand-off voltage (VWM), 25.6 V maximum clamping voltage (VC) at 5.0 A peak pulse current, 400 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - ideal for automotive ECU power rail protection.
For engineers reviewing the TPSMA11AHE3_B/H datasheet, TPSMA11AHE3_B/H pinout, TPSMA11AHE3_B/H application, or TPSMA11AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, low clamping ratio (VC/VBR ≈ 2.33), and compatibility with automated SMT assembly per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge conditions. Its 10/1000 µs waveform rating (400 W) and 8.3 ms half-sine IFSM = 40 A capability enable robust protection against inductive switching spikes and lightning-induced surges in harsh environments.
The device exhibits a positive temperature coefficient of VBR (+0.067 %/°C), ensuring predictable voltage drift over temperature. With MSL Level 1 rating (peak reflow 260 °C) and matte tin-plated leads compliant with JESD 22-B102 whisker testing, it supports high-reliability automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 10.50 / 11.0 / 11.60 V - defines precise breakdown threshold for reliable overvoltage triggering |
| VWM | 9.40 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 25.6 V at 5.0 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient energy absorption capacity without failure |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and industrial enclosures |
| Polarity | Unidirectional - protects against positive-going transients only; cathode band denotes terminal orientation |
| Package | SMA (DO-214AC) - industry-standard SMT footprint with 0.208" x 0.157" body and 0.074" lead spacing |
Pinout & Package
SMA (DO-214AC) package: surface-mount, molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by color band. Dimensions: 5.28 mm × 3.99 mm × 2.29 mm (L × W × H), recommended pad layout per datasheet Figure 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE > VBR |
| Anode | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR performance and low leakage (<1.0 µA at VWM) across -65 °C to +185 °C |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| 400 W peak pulse power (10/1000 µs) | Withstands repeated ESD and load-dump events without degradation in automotive 12 V systems |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free reflow soldering without delamination or parametric shift |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VIN and GND, clamping transients within 1 ns response time. Use Value: Limits voltage to ≤25.6 V during 400 W surges, preventing damage to 3.3 V/5 V logic rails downstream of LDOs. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 9.40 V) placed across signal and return, suppressing EFT bursts (IEC 61000-4-4) without affecting DC accuracy. Use Value: Maintains <1.0 µA leakage at 9.40 V, preserving sensor full-scale resolution while clamping ±1 kV transients. |
| Consumer Device USB Port ESD Suppression | Telecom Base Station DC Feed Protection |
Use Scenario: Safeguarding VBUS line of USB-C ports in portable medical monitors against human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS connected between VBUS and chassis ground, triggered before internal USB PHY fails. Use Value: Achieves 25.6 V clamping at 5.0 A, keeping stress below USB 2.0 PHY absolute maximum ratings (36 V). | Use Scenario: Protecting -48 V DC feed lines powering remote radio units (RRUs) in 5G base stations from lightning-induced surges. IC Role / Device Role / Timing Role: High-TJ TVS mounted on outdoor-rated PCB, absorbing multi-kA induced currents via telecom-grade grounding. Use Value: Sustains operation at +185 °C ambient, enabling use in sealed, passive-cooled RRU enclosures without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Same SMA package, 11 V VBR, but rated for 400 W (10/1000 µs); not AEC-Q101 qualified; higher VC = 18.2 V | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance requirements | Select SMAJ11A if AEC-Q101 is unnecessary and lower clamping voltage is prioritized |
| TPSMA11AHM3_B/H | Identical electrical specs and AEC-Q101 qualification; halogen-free molding compound; same RoHS compliance | No functional difference; used where halogen-free materials are mandated by OEM or regional regulations | Choose TPSMA11AHM3_B/H when halogen-free content is required per IPC-1752 or customer spec |
Compared with SMAJ11A and TPSMA11AHM3_B/H, the TPSMA11AHE3_B/H provides identical surge performance and automotive qualification in a RoHS-compliant, non-halogen-free package - making it optimal for cost-sensitive AEC-Q101 designs where halogen content is unrestricted.
Availability
TPSMA11AHE3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and consumer USB power protection requiring stable component supply and AEC-Q101 traceability.
Supply support for TPSMA11AHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-temperature performance.
The TPSMAxxA series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for automotive and industrial applications demanding AEC-Q101 qualification, 185 °C operation, and repeatable clamping under harsh surge conditions.
FAQ
What is the breakdown voltage tolerance for TPSMA11AHE3_B/H?
The TPSMA11AHE3_B/H has a specified breakdown voltage range of 10.50 V (minimum) to 11.60 V (maximum) at 1.0 mA test current, with 11.0 V nominal. This ±5% tolerance ensures consistent triggering behavior across production lots and temperature extremes, critical for predictable overvoltage protection in automotive ECUs where margin to downstream IC absolute maximum ratings must be tightly controlled. The TPSMA11AHE3_B/H maintains this specification under AEC-Q101 stress testing.
Is TPSMA11AHE3_B/H compatible with lead-free reflow soldering?
Yes, the TPSMA11AHE3_B/H is fully compatible with lead-free reflow soldering processes. It meets MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 whisker testing. The TPSMA11AHE3_B/H is designed for single-pass reflow without parametric shift or mechanical degradation, supporting high-yield SMT assembly in automotive and industrial manufacturing lines.
Does TPSMA11AHE3_B/H support bidirectional transient suppression?
No, the TPSMA11AHE3_B/H is strictly unidirectional. Its internal structure and polarity marking (cathode band) are configured to clamp only positive-going transients relative to the anode. For bidirectional protection, two TPSMA11AHE3_B/H devices would need back-to-back connection, or a dedicated bidirectional TVS such as the SMBJ11CA should be selected. The TPSMA11AHE3_B/H datasheet explicitly states "Available in uni-directional polarity only" and does not specify symmetrical breakdown characteristics.
What is the maximum clamping voltage of TPSMA11AHE3_B/H at rated surge current?
The TPSMA11AHE3_B/H has a maximum clamping voltage (VC) of 25.6 V at 5.0 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured under defined test conditions (mounted on 5.0 mm × 5.0 mm copper pads) and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The TPSMA11AHE3_B/H achieves a clamping ratio (VC/VBR) of approximately 2.33, indicating efficient transient energy diversion.
How does the temperature coefficient affect TPSMA11AHE3_B/H performance?
The TPSMA11AHE3_B/H has a typical temperature coefficient of VBR of +0.067 %/°C, meaning its breakdown voltage increases linearly with junction temperature. At +150 °C, VBR rises ~8.4% above its 25 °C value - from 11.0 V to ~11.9 V. This positive drift ensures safe margin against false triggering at high ambient temperatures. The TPSMA11AHE3_B/H datasheet provides the formula VBR(TJ) = VBR(25 °C) × [1 + αT × (TJ − 25)] for accurate system-level modeling.
TPSMA11AHE3_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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.6A
- 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)
TPSMA11AHE3_B/H FAQ
1.How can I place an order for TPSMA11AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA11AHE3_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 TPSMA11AHE3_B/H reliable?
The price and inventory of TPSMA11AHE3_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 TPSMA11AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA11AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA11AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA11AHE3_B/H?
TPSMA11AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA11AHE3_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 TPSMA11AHE3_B/H?
For technical support, including TPSMA11AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA11AHE3_B/H requirements.
6.How does Aetrix verify that TPSMA11AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA11AHE3_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 TPSMA11AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA11AHE3_B/H?
All TPSMA11AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA11AHE3_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 TPSMA11AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMA11AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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