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Vishay General Semiconductor - Diodes Division TPSMA11AHM3_B/H
- Part No.:
- TPSMA11AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA11AHM3_B/H.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,860
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Product details
Overview
TPSMA11AHM3_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 a 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 185 °C maximum junction temperature - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the TPSMA11AHM3_B/H datasheet, TPSMA11AHM3_B/H pinout, TPSMA11AHM3_B/H application, or TPSMA11AHM3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 rating, and verified clamping performance under 10/1000 μs surge conditions.
Technical Context
This TVS diode operates as a voltage-clamping protection device using passivated anisotropic rectifier technology. Its unidirectional configuration enables forward-biased conduction during overvoltage events while maintaining low leakage (<1.0 μA at VWM) and fast response time to transient surges.
The device is rated for 40 A non-repetitive peak forward surge current (IFSM, 8.3 ms half-sine), exhibits 0.067 %/°C temperature coefficient of VBR, and maintains stable clamping up to TJ = 185 °C - meeting high-reliability requirements for automotive ECUs and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 11.0 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VWM | 9.40 V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPPM | 25.6 V at 5.0 A - clamping voltage limits stress on protected circuitry during surge |
| PPPM | 400 W (10/1000 μs) - robust energy absorption capability for lightning and inductive switching transients |
| TJ max. | 185 °C - supports operation in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - suitable for DC power rail and single-polarity signal line protection only |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
| MSL Level | Level 1 (260 °C peak reflow) - compatible with standard SMT assembly processes without moisture sensitivity concerns |
Pinout & Package
TPSMA11AHM3_B/H uses the SMA (DO-214AC) surface-mount package: molded epoxy case with matte tin-plated leads, cathode indicated by a color band, and optimized thermal pad layout (0.2" × 0.2" copper per terminal). The device has two terminals: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VRM exceeds VBR |
| Anode | Reference / return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term stability and reduces parameter drift under thermal cycling |
| High-temperature capability | Rated for continuous operation up to 185 °C junction temperature - enables use in engine control modules and power converters |
| Surge robustness | 400 W peak pulse power (10/1000 μs) with low incremental surge resistance ensures consistent clamping across repeated transients |
| Automotive qualification | HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - meets OEM supply chain requirements |
| Fast response | Sub-nanosecond response time limits voltage overshoot during ESD and fast-rising transients |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump and alternator ripple transients in body control modules. IC Role / Device Role / Timing Role: Voltage-clamping TVS diode placed between VIN and GND, triggered within nanoseconds upon overvoltage detection. Use Value: Limits clamped voltage to 25.6 V at 5 A, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies downstream. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure sensors exposed to EMI and cable-induced surges in factory automation. IC Role / Device Role / Timing Role: Unidirectional transient suppressor installed in series with signal return path to shunt induced spikes to ground. Use Value: Maintains <1.0 μA leakage at 9.4 V stand-off, preserving signal integrity and measurement accuracy in precision sensing circuits. |
| Consumer Device USB Port Protection | Telecom Base Station DC Power Input |
Use Scenario: Clamping electrostatic discharge (ESD) on VBUS lines of USB-C ports in portable media players and docking stations. IC Role / Device Role / Timing Role: Fast-response TVS placed directly at connector entry point to divert >8 kV HBM ESD pulses before reaching USB controller IC. Use Value: Achieves 25.6 V clamping at 5 A with 0.067 %/°C VBR tempco - ensuring stable protection across ambient temperature ranges. | Use Scenario: Suppressing lightning-induced surges on -48 V DC input rails of telecom remote radio units mounted on cell towers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk DC input, coordinated with upstream fuses and secondary filtering stages. Use Value: Withstands 40 A 8.3 ms surge current and delivers 400 W pulse power handling - critical for outdoor infrastructure reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage 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; no halogen-free designation | Targeted at commercial/industrial systems where automotive qualification is unnecessary | Select SMAJ11A for cost-sensitive non-automotive designs requiring identical electrical specs but without AEC-Q101 or halogen-free mandates |
| TPSMA11AHE3_B/H | Identical electrical specs and package; differs only in suffix - HE3 indicates RoHS-compliant and AEC-Q101 qualified, but not halogen-free | Used where AEC-Q101 compliance is required but halogen-free material is not mandated by OEM spec | Choose TPSMA11AHE3_B/H when halogen content is unrestricted but full AEC-Q101 validation remains essential |
Compared with SMAJ11A and TPSMA11AHE3_B/H, the TPSMA11AHM3_B/H uniquely combines AEC-Q101 qualification, halogen-free construction, and RoHS compliance - making it the only option among the three approved for next-generation automotive platforms with strict material declarations.
Availability
TPSMA11AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for TPSMA11AHM3_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, thermal performance, and application-specific validation.
The TPSMAxxA family is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where sustained high-temperature operation and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the TPSMA11AHM3_B/H at its rated peak pulse current?
The TPSMA11AHM3_B/H has a maximum clamping voltage (VC) of 25.6 V at 5.0 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The TPSMA11AHM3_B/H maintains this clamping performance across its full operating temperature range, supporting robust protection in thermally demanding applications.
Is the TPSMA11AHM3_B/H suitable for automotive applications?
Yes, the TPSMA11AHM3_B/H is AEC-Q101 qualified, halogen-free, and RoHS-compliant - meeting stringent automotive reliability and material requirements. Its 185 °C maximum junction temperature rating and MSL Level 1 reflow compatibility further validate its suitability for under-hood and chassis-mounted electronic control units. The TPSMA11AHM3_B/H is explicitly designated for automotive use via its HM3 suffix per Vishay's ordering nomenclature.
How does the TPSMA11AHM3_B/H differ from the TPSMA11AHE3_B/H variant?
The TPSMA11AHM3_B/H and TPSMA11AHE3_B/H share identical electrical specifications and SMA (DO-214AC) packaging, but differ in material compliance: HM3 denotes halogen-free + RoHS + AEC-Q101, whereas HE3 denotes RoHS + AEC-Q101 without halogen-free certification. Both are functionally interchangeable in circuits where halogen content is not restricted, but TPSMA11AHM3_B/H satisfies stricter OEM material declarations.
What is the stand-off voltage (VWM) of the TPSMA11AHM3_B/H, and why does it matter?
The TPSMA11AHM3_B/H has a stand-off voltage (VWM) of 9.40 V - the maximum DC or RMS voltage that can be continuously applied without exceeding 1.0 μA reverse leakage current. This parameter ensures the device remains non-conductive during normal operation while allowing rapid transition to clamping mode when transients exceed the 11.0 V breakdown threshold. Proper VWM selection prevents false triggering and preserves system efficiency.
Can the TPSMA11AHM3_B/H be used in bidirectional signal line protection?
No, the TPSMA11AHM3_B/H is unidirectional only, as confirmed in Vishay's datasheet. It conducts surge current only from cathode to anode and cannot suppress negative-going transients on AC or bidirectional lines. For such applications, a bidirectional TVS like TPSMA11CA must be selected. Using TPSMA11AHM3_B/H on bidirectional paths risks incomplete protection and potential device failure during reverse-polarity surges.
TPSMA11AHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA11AHM3_B/H FAQ
1.How can I place an order for TPSMA11AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA11AHM3_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 TPSMA11AHM3_B/H reliable?
The price and inventory of TPSMA11AHM3_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 TPSMA11AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA11AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA11AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA11AHM3_B/H?
TPSMA11AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA11AHM3_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 TPSMA11AHM3_B/H?
For technical support, including TPSMA11AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA11AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA11AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA11AHM3_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 TPSMA11AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA11AHM3_B/H?
All TPSMA11AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA11AHM3_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 TPSMA11AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA11AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA11AHM3_B/H Tags
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