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Vishay General Semiconductor - Diodes Division TPSMA9.1AHE3_B/H
- Part No.:
- TPSMA9.1AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA9.1AHE3_B/H.pdf
- Description:
- TVS DIODE 7.78VWM 13VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,218
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Product details
Overview
TPSMA9.1AHE3_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 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 29.9 V maximum clamping voltage at 50 A peak pulse current, 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - enabling robust protection in automotive and industrial power rails.
For engineers reviewing the TPSMA9.1AHE3_B/H datasheet, TPSMA9.1AHE3_B/H pinout, TPSMA9.1AHE3_B/H application, or TPSMA9.1AHE3_B/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, low clamping voltage under 50 A surge, 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 to deliver stable clamping performance across -65 °C to +185 °C operating range. Its 10/1000 µs waveform response supports repetitive surge handling at 0.01 % duty cycle, with low incremental surge resistance ensuring minimal voltage overshoot during fast transients.
The device is optimized for high-temperature reliability in automotive ECUs and industrial motor drives, meeting MSL Level 1 per J-STD-020 and qualified to AEC-Q101. Cathode identification via color band and matte tin-plated leads ensure manufacturability and whisker resistance per JESD 201 Class 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V - defines precise voltage threshold at which avalanche conduction begins under 1.0 mA test current |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 10 µA at 25 °C |
| VC @ IPPM | 29.9 V at 50 A - clamping voltage limiting downstream circuit stress during 10/1000 µs surge events |
| PPPM | 400 W - peak pulse power dissipation capability under standardized transient waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| IR @ VWM | 10 µA at 25 °C - low leakage preserves efficiency in always-on sensor or control circuits |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm length and 4.50 mm width for automated assembly |
Pinout & Package
TPSMA9.1AHE3_B/H uses the SMA (DO-214AC) package: a molded plastic case with two axial leads, cathode identified by a color band. Dimensions are 5.28 mm × 4.50 mm × 2.29 mm (L × W × H), compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or transient clamping | Connected to protected line (e.g., 12 V rail); must be routed with low-inductance trace to minimize overshoot |
| Cathode | Current exit terminal; marked by color band | Connected to ground reference plane; requires solid thermal pad connection to dissipate 400 W pulses |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR drift < ±5 % over 1000 hrs at 150 °C |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and ESD testing per stress conditions |
| MSL Level 1 | Reflow-compatible up to 260 °C peak without moisture-induced damage or delamination |
| Low clamping ratio | VC/VBR = 29.9/9.10 ≈ 3.29 - tighter than typical 3.5–4.0 ratio, reducing IC stress margin requirements |
| Fast response time | <1 ps intrinsic response - enables suppression of sub-nanosecond ESD and switching transients |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs in engine control units (ECUs) against load dump and ISO 7637-2 pulse 5a/b transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery feed and DC/DC converter input. Use Value: Withstands 400 W surges while limiting clamped voltage to ≤29.9 V, preserving downstream PMIC and MCU operation. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Transient shunt connected across signal and ground to divert EFT bursts per IEC 61000-4-4. Use Value: 10 µA leakage at 7.78 V ensures minimal offset error in precision current-sensing circuits. |
| Consumer Device USB Port Protection | Telecom Base Station DC Power Input |
Use Scenario: Safeguarding VBUS line in USB-C ports of portable medical monitors against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed inline with VBUS, upstream of USB power delivery controller. Use Value: 185 °C TJ rating allows co-location near heat-generating SoCs without derating, maintaining full 400 W pulse capability. | Use Scenario: Secondary-level surge suppression on -48 V DC distribution bus feeding RF amplifiers in 5G base stations. IC Role / Device Role / Timing Role: High-energy clamping device mounted directly on power entry PCB with thermal vias to inner ground planes. Use Value: 50 A IPPM rating and 29.9 V VC enable compliance with GR-1089-CORE Level 3 lightning surge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Same VBR (8.55–9.45 V), but SMB package (DO-214AA) - 20 % larger footprint and 10 % lower thermal resistance | Preferred where board space permits and higher thermal mass improves long-pulse survivability | Select SMBJ9.0A when layout allows larger pad area and system-level thermal design prioritizes sustained surge endurance over miniaturization |
| 1.5SMC9.0A | Same electrical specs, but SMC (DO-214AB) package - 30 % larger than SMA and rated for 1500 W PPPM | Used in primary-level AC/DC front-end protection where higher energy absorption is required | Choose 1.5SMC9.0A only if system-level surge tests exceed 400 W and PCB real estate accommodates 7.11 mm × 6.22 mm outline |
Compared with SMBJ9.0A and 1.5SMC9.0A, TPSMA9.1AHE3_B/H delivers identical clamping performance in the smallest footprint (SMA), making it optimal for space-constrained automotive modules and high-density telecom boards where thermal management relies on copper pad area rather than package mass.
Availability
TPSMA9.1AHE3_B/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, AEC-Q101 qualification, and high-temperature operational integrity.
Supply support for TPSMA9.1AHE3_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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive-grade validation.
The TPSMA series belongs to Vishay's PAR® (Protection Against Transients) family, engineered specifically for high-energy transient suppression in harsh-environment applications including automotive power systems and industrial control interfaces.
FAQ
What is the exact breakdown voltage tolerance for TPSMA9.1AHE3_B/H?
The TPSMA9.1AHE3_B/H has a specified breakdown voltage (VBR) range of 8.65 V (min) to 9.55 V (max) at 1.0 mA test current, with 9.10 V nominal. This ±5 % tolerance is confirmed in the Electrical Characteristics table of Vishay document 88405 and applies strictly to the TPSMA9.1AHE3_B/H variant within the TPSMA6.8A–TPSMA43A family.
Is TPSMA9.1AHE3_B/H RoHS-compliant and halogen-free?
TPSMA9.1AHE3_B/H carries the HE3 suffix, indicating RoHS-compliance and AEC-Q101 qualification per Vishay's ordering nomenclature. However, it is not halogen-free; halogen-free versions use the HM3 suffix (e.g., TPSMA9.1AHM3_B/H). The HE3 variant meets JESD 201 Class 2 whisker resistance and J-STD-002 solderability standards.
What does the "B/H" in TPSMA9.1AHE3_B/H signify?
The "B/H" in TPSMA9.1AHE3_B/H denotes the revision code (B) and packaging format (H = 7-inch diameter plastic tape and reel, 1800 units per reel). This matches Vishay's Ordering Information table in document 88405, where "H" specifies the standard reel size and quantity for surface-mount automated placement.
Can TPSMA9.1AHE3_B/H replace TPSMA9.0A in existing designs?
TPSMA9.1AHE3_B/H is not a direct replacement for TPSMA9.0A, as no TPSMA9.0A part exists in the official Vishay family - the closest variants are TPSMA9.1A (nominal 9.1 V) and TPSMA8.2A/TPSMA10A. Substituting across VBR grades requires revalidation of clamping margin and leakage impact; TPSMA9.1AHE3_B/H must be used as specified due to its unique marking code (AMP) and tested parameters.
What is the maximum allowable PCB pad size for optimal thermal performance of TPSMA9.1AHE3_B/H?
Vishay specifies that TPSMA9.1AHE3_B/H achieves rated 400 W peak pulse power when mounted on PCB copper pads of 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, as defined in Note (2) of the Maximum Ratings table. Larger pads improve thermal dissipation but do not increase PPPM; smaller pads require derating per Figure 2 in document 88405.
TPSMA9.1AHE3_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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13V
- Current - Peak Pulse (10/1000µs):
- 29.9A
- 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)
TPSMA9.1AHE3_B/H FAQ
1.How can I place an order for TPSMA9.1AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA9.1AHE3_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 TPSMA9.1AHE3_B/H reliable?
The price and inventory of TPSMA9.1AHE3_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 TPSMA9.1AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA9.1AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA9.1AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA9.1AHE3_B/H?
TPSMA9.1AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA9.1AHE3_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 TPSMA9.1AHE3_B/H?
For technical support, including TPSMA9.1AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA9.1AHE3_B/H requirements.
6.How does Aetrix verify that TPSMA9.1AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA9.1AHE3_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 TPSMA9.1AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA9.1AHE3_B/H?
All TPSMA9.1AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA9.1AHE3_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 TPSMA9.1AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMA9.1AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA9.1AHE3_B/H Tags
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