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Vishay General Semiconductor - Diodes Division TPSMP9.1AHM3_A/I
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- Part No.:
- TPSMP9.1AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP9.1AHM3_A/I.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,135
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Product details
Overview
TPSMP9.1AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the PAR® family, designed for high-reliability automotive and industrial overvoltage protection. It features a 9.1 V breakdown voltage (VBR = 8.65–9.55 V), 7.78 V stand-off voltage (VWM), 22.4 V clamping voltage at 50 A peak pulse current, 300 W peak pulse power rating, and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the TPSMP9.1AHM3_A/I datasheet, TPSMP9.1AHM3_A/I pinout, TPSMP9.1AHM3_A/I application, or TPSMP9.1AHM3_A/I equivalent, key selection criteria include its DO-220AA (SMP) package, 185 °C junction temperature rating, low-profile 1.0 mm height, unidirectional polarity with cathode band marking, and suitability for signal-line and power-rail protection in harsh environments.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, activating when reverse voltage exceeds VWM (7.78 V) to divert surge energy away from downstream components. Its passivated anisotropic rectifier technology ensures stable breakdown behavior and low incremental surge resistance.
Designed for 10/1000 µs waveform transients, it delivers 300 W peak pulse power at TA = 25 °C on standard PCB pads (5.0 mm × 5.0 mm per terminal), with derating above 25 °C per published curves. It meets MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V - defines precise voltage threshold at which avalanche conduction begins under 1 mA test current |
| VWM | 7.78 V - maximum continuous reverse operating voltage before leakage exceeds 10 µA |
| VC @ IPPM | 22.4 V @ 50 A - clamping voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 300 W - peak pulse power handling capability under standardized transient conditions |
| TJ max | 185 °C - enables operation in high-temperature automotive engine compartments |
| Package | SMP (DO-220AA) - ultra-low-profile surface-mount package with 1.0 mm typical height and matte tin-plated leads |
| AEC-Q101 | Qualified - certified for automotive-grade reliability per stress-test requirements |
Pinout & Package
TPSMP9.1AHM3_A/I uses the SMP (DO-220AA) package: a two-terminal, unidirectional surface-mount device with cathode indicated by a color band. Dimensions are 3.61 mm × 1.88 mm × 1.0 mm (L × W × H), with 2.54 mm center-to-center lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to system ground or low-side reference | Provides return path for clamped surge current; must be routed with low-inductance connection to ground plane |
| Cathode | Protected line connection; marked with color band | Connected to the signal or power rail requiring transient suppression; determines unidirectional polarity orientation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 185 °C junction temperature rating | Supports placement near heat sources in automotive ECUs without derating penalties beyond datasheet curves |
| 1.0 mm typical height | Enables use in space-constrained modules such as ADAS camera housings and motor control inverters |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for 3.3 V and 5 V logic interfaces |
| MSL Level 1, 260 °C reflow compatible | Allows single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontrollers and CAN transceivers from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Parallel-connected clamping TVS that activates within nanoseconds to limit voltage to ≤22.4 V during 300 W surges. Use Value: Prevents latch-up and gate oxide damage in automotive MCUs while maintaining AEC-Q100 compliance of the protected subsystem. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional shunt protector placed between sensor output and ADC input, suppressing ESD and inductive switching spikes. Use Value: Maintains signal integrity below 10 µA leakage at 7.78 V, avoiding offset errors in precision measurement circuits. |
| Consumer USB Port Protection | Motor Drive Gate Driver Protection |
Use Scenario: Shielding USB 2.0 data lines (D+/D−) and VBUS against human-body-model (HBM) ESD events up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed directly at connector, clamping fast transients before reaching USB PHY. Use Value: Meets IEC 61000-4-2 Level 4 without degrading signal rise/fall times due to minimal parasitic capacitance. | Use Scenario: Protecting high-side and low-side gate drivers in BLDC motor inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Clamp placed across gate-source terminals to prevent VGS overstress beyond MOSFET rating. Use Value: Fast response time and 300 W pulse rating absorb repetitive switching energy without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Higher VBR (8.5–9.4 V), same DO-214AC package, lower PPPM (400 W only at ≥13 V variants; SMAJ9.0A rated at 400 W but with higher VC = 14.4 V @ 27.8 A) | Less suitable for tight 7.78 V stand-off margin; better for 9 V nominal rails with higher clamping tolerance | Select SMAJ9.0A only if board layout allows larger DO-214AC footprint and system can tolerate 14.4 V clamping |
| TPSMA6.8A | Lower VBR (6.45–7.14 V), same AEC-Q101 qualification, identical SMP package, but rated for 250 W PPPM | Better for 5 V logic rails; insufficient for 12 V systems where 9.1 V VBR provides optimal margin above VWM | Choose TPSMA6.8A for 5 V MCU I/O protection; avoid for 12 V supply rail protection where TPSMP9.1AHM3_A/I's 300 W rating and 9.1 V threshold are critical |
Compared with SMAJ9.0A and TPSMA6.8A, TPSMP9.1AHM3_A/I uniquely balances 9.1 V breakdown, 300 W pulse power, and SMP package size-making it optimal for space-limited automotive modules requiring precise 7.78 V stand-off and robust 185 °C operation.
Availability
TPSMP9.1AHM3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, motor drive gate driver safeguarding, and consumer USB port ESD suppression requiring stable component supply across production lifecycles.
Supply support for TPSMP9.1AHM3_A/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 reliability, efficiency, and application-specific performance.
The TPSMP series belongs to Vishay's PAR® (Protection Advanced Rectifier) family-engineered specifically for high-power-density, high-temperature transient suppression in automotive and industrial environments where AEC-Q101 compliance and compact packaging are mandatory.
FAQ
What is the exact breakdown voltage range for TPSMP9.1AHM3_A/I?
The TPSMP9.1AHM3_A/I has a guaranteed breakdown voltage (VBR) range of 8.65 V to 9.55 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining for 12 V automotive systems where 7.78 V stand-off voltage provides adequate headroom.
Is TPSMP9.1AHM3_A/I suitable for bidirectional transient protection?
No, TPSMP9.1AHM3_A/I is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics-including reverse stand-off voltage (VWM = 7.78 V) and clamping behavior-are specified only for reverse-biased conditions. For AC or dual-polarity signal lines, a dedicated bidirectional device such as the SMBJ9.0CA must be used instead of TPSMP9.1AHM3_A/I.
What does the "HM3_A/I" suffix indicate in TPSMP9.1AHM3_A/I?
The "HM3" denotes the halogen-free, RoHS-compliant, AEC-Q101-qualified SMP package variant; "A" is the revision code; and "I" specifies the 13-inch tape-and-reel delivery format with 10,000 units per reel. This distinguishes it from the "H" variant (7-inch reel, 3,000 units), ensuring correct logistics and assembly line feeding for high-volume SMT lines.
How does TPSMP9.1AHM3_A/I perform at elevated ambient temperatures?
TPSMP9.1AHM3_A/I maintains full specification compliance up to 185 °C junction temperature. Its pulse power rating derates linearly above 25 °C ambient per Figure 2 in the datasheet-e.g., at 125 °C ambient, PPPM reduces to approximately 180 W. This makes TPSMP9.1AHM3_A/I suitable for under-hood automotive locations where sustained high temperatures coexist with transient threats.
Can TPSMP9.1AHM3_A/I replace older SMA-style TVS diodes in existing designs?
TPSMP9.1AHM3_A/I cannot serve as a direct drop-in replacement for SMA (DO-214AC) devices due to its smaller SMP (DO-220AA) footprint (3.61 mm × 1.88 mm vs. 4.57 mm × 2.79 mm). While electrically compatible in many cases, PCB land patterns must be revised to match the tighter 2.54 mm terminal pitch and reduced pad area. Always verify thermal dissipation and mechanical clearance before substituting TPSMP9.1AHM3_A/I into legacy SMA layouts.
TPSMP9.1AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- 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):
- 22.4A
- 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-220AA (SMP)
TPSMP9.1AHM3_A/I FAQ
1.How can I place an order for TPSMP9.1AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP9.1AHM3_A/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 TPSMP9.1AHM3_A/I reliable?
The price and inventory of TPSMP9.1AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP9.1AHM3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMP9.1AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP9.1AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP9.1AHM3_A/I?
TPSMP9.1AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP9.1AHM3_A/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 TPSMP9.1AHM3_A/I?
For technical support, including TPSMP9.1AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP9.1AHM3_A/I requirements.
6.How does Aetrix verify that TPSMP9.1AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMP9.1AHM3_A/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 TPSMP9.1AHM3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMP9.1AHM3_A/I?
All TPSMP9.1AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP9.1AHM3_A/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 TPSMP9.1AHM3_A/I part is unused and in its original packaging.
Return procedure for TPSMP9.1AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP9.1AHM3_A/I Tags
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