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Vishay General Semiconductor - Diodes Division TPSMC9.1AHE3_B/H
- Part No.:
- TPSMC9.1AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC9.1AHE3_B/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,327
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Product details
Overview
TPSMC9.1AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and ESD events on power and signal lines. It features a 9.1 V breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 13.4 V maximum clamping voltage at 112 A, and operates up to +185 °C junction temperature - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the TPSMC9.1AHE3_B/H datasheet, TPSMC9.1AHE3_B/H pinout, TPSMC9.1AHE3_B/H application, or TPSMC9.1AHE3_B/H equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, TJ = 185 °C rating, and clamping performance under 10/1000 µs surge conditions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable breakdown characteristics across temperature. Its 0.060 %/°C VBR temperature coefficient ensures predictable clamping behavior from −65 °C to +185 °C, critical for under-hood automotive electronics.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow capability and supports high-reliability mounting on 8.0 mm × 8.0 mm copper pads. It is rated for non-repetitive 200 A forward surge current (8.3 ms half-sine) and exhibits low incremental surge resistance for effective energy absorption.
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 clamping initiates under 1 mA test current |
| VWM | 7.78 V - maximum continuous reverse operating voltage before leakage exceeds 50 μA |
| VC @ IPPM | 13.4 V - clamped voltage during 112 A 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 1500 W - peak transient power handling capacity under standardized waveform |
| TJ max. | +185 °C - enables use in high-temperature environments including engine control units |
| Polarity | Unidirectional - protects against positive-going transients only; cathode marked by band |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability and lifetime performance |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix). Dimensions: 7.11 mm × 6.22 mm × 2.90 mm (L × W × H); cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path |
| Cathode | Current exit point during clamping | Connected to line being protected (e.g., 12 V rail or sensor output) |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR over lifetime and temperature cycling |
| Clamping efficiency | Low VC/VBR ratio (1.47) minimizes voltage overshoot during fast transients |
| Surge robustness | 200 A IFSM (8.3 ms) supports repeated load-dump events without degradation |
| Assembly compatibility | MSL Level 1 rating enables standard SMT reflow without moisture sensitivity concerns |
| Automotive readiness | AEC-Q101 qualification confirms suitability for powertrain and body electronics applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 40 V, 100 ms) on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Primary clamping element placed between battery input and DC/DC converter input stage. Use Value: Limits voltage seen by downstream regulators to ≤13.4 V during 112 A surge, preventing latch-up or overvoltage damage. | Use Scenario: Protecting analog outputs of pressure/temperature sensors exposed to relay-induced spikes in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional shunt clamp on 0–5 V or 4–20 mA signal lines upstream of ADC inputs. Use Value: Clamps transients within 1 ns response time while maintaining <50 μA leakage at 7.78 V, preserving signal integrity. |
| Consumer Power Adapter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifiers and controllers against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Secondary-level TVS placed after bridge rectifier but before bulk capacitor and controller IC. Use Value: Absorbs 1500 W pulses without failure, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV) requirements. | Use Scenario: Shielding Ethernet PHY interface power pins (e.g., MDI power) from induced surges in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Standoff-rated protection on 3.3 V or 5 V bias rails feeding magnetics and PHY ICs. Use Value: Maintains 7.78 V working voltage margin below typical 9 V PoE auxiliary rails while clamping to 13.4 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Lower PPPM (400 W), same SMC package, VBR = 9.0 V min, VC = 14.4 V @ 27.8 A | Not AEC-Q101 qualified; limited to commercial/industrial use | Select when cost sensitivity outweighs automotive qualification and surge energy requirements are lower |
| TPSMC9.0AHE3 | Identical construction and qualification; VBR = 8.55–8.95 V (vs. 8.65–9.55 V), VC = 13.3 V @ 113 A | Nearly identical performance; minor VBR binning difference affects clamping onset precision | Choose for tighter VBR tolerance where exact turn-on voltage is critical in feedback-sensitive circuits |
Compared with SMAJ9.0A and TPSMC9.0AHE3, the TPSMC9.1AHE3_B/H delivers higher surge energy handling (1500 W vs. 400 W), guaranteed AEC-Q101 qualification, and optimized clamping voltage for automotive 12 V systems - making it the preferred choice where reliability under extreme thermal and electrical stress is mandatory.
Availability
TPSMC9.1AHE3_B/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, and telecom line card surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMC9.1AHE3_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 high-reliability and automotive-grade performance.
The TPSMC series belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for demanding transient suppression in automotive, industrial, and telecom infrastructure where high junction temperature operation and AEC-Q101 validation are essential.
FAQ
What is the breakdown voltage tolerance of TPSMC9.1AHE3_B/H?
The TPSMC9.1AHE3_B/H has a specified breakdown voltage range of 8.65 V (minimum) to 9.55 V (maximum) at 1 mA test current, with a nominal value of 9.10 V. This ±5% tolerance ensures consistent clamping initiation across production lots while accommodating thermal drift via its 0.060 %/°C temperature coefficient. The TPSMC9.1AHE3_B/H maintains this specification under full AEC-Q101 qualification testing.
Is TPSMC9.1AHE3_B/H suitable for bidirectional transient protection?
No, the TPSMC9.1AHE3_B/H is unidirectional only, as confirmed in the Vishay datasheet. It protects against positive-going transients on the cathode side relative to anode. For bidirectional protection, a separate device such as the SMBJ9.0CA or dual-diode configuration would be required. The TPSMC9.1AHE3_B/H polarity is marked by a cathode band and must be oriented accordingly in-circuit.
What does the 'HE3' suffix indicate in TPSMC9.1AHE3_B/H?
'HE3' denotes Vishay's RoHS-compliant, AEC-Q101-qualified product variant with matte tin-plated leads and JESD201 Class 2 whisker resistance. The 'B/H' suffix specifies packaging: 7-inch tape-and-reel, 850 units per reel. The TPSMC9.1AHE3_B/H therefore combines automotive reliability, lead-free assembly compatibility, and standardized logistics formatting for high-volume manufacturing.
How does TPSMC9.1AHE3_B/H perform at elevated temperatures?
The TPSMC9.1AHE3_B/H is rated for continuous operation from −65 °C to +185 °C junction temperature, with derated pulse power above 25 °C per Figure 2 in the datasheet. Its 0.060 %/°C VBR coefficient allows accurate prediction of clamping voltage shift across temperature - for example, VBR increases by ~5.4% at +150 °C versus 25 °C. This behavior is fully characterized and validated in the TPSMC9.1AHE3_B/H AEC-Q101 stress tests.
Can TPSMC9.1AHE3_B/H replace SMAJ9.1A in existing designs?
TPSMC9.1AHE3_B/H is not a direct drop-in replacement for SMAJ9.1A due to differences in package size (SMC vs. SMA), thermal mass, and surge rating (1500 W vs. 400 W). While both are unidirectional and share similar VBR, the TPSMC9.1AHE3_B/H requires larger PCB pads (8.0 mm × 8.0 mm) and delivers significantly higher energy absorption. Redesign verification is required before substitution, especially for thermal and layout constraints. The TPSMC9.1AHE3_B/H offers superior performance but demands mechanical adaptation.
TPSMC9.1AHE3_B/H 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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 112A
- 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)
TPSMC9.1AHE3_B/H FAQ
1.How can I place an order for TPSMC9.1AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC9.1AHE3_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 TPSMC9.1AHE3_B/H reliable?
The price and inventory of TPSMC9.1AHE3_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 TPSMC9.1AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMC9.1AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC9.1AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC9.1AHE3_B/H?
TPSMC9.1AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC9.1AHE3_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 TPSMC9.1AHE3_B/H?
For technical support, including TPSMC9.1AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC9.1AHE3_B/H requirements.
6.How does Aetrix verify that TPSMC9.1AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMC9.1AHE3_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 TPSMC9.1AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMC9.1AHE3_B/H?
All TPSMC9.1AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC9.1AHE3_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 TPSMC9.1AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMC9.1AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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