My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA9.1AHE3_A/H
- Part No.:
- TPSMA9.1AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA9.1AHE3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,993
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA9.1AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast voltage transients on power and signal lines. It features a 9.1 V nominal breakdown voltage (VBR), 7.78 V stand-off voltage (VWM), 29.9 V maximum clamping voltage (VC) at 50 A peak pulse current, 400 W peak pulse power (10/1000 μs), and operates up to +185 °C junction temperature - ideal for automotive sensor line protection.
For engineers reviewing the TPSMA9.1AHE3_A/H datasheet, TPSMA9.1AHE3_A/H pinout, TPSMA9.1AHE3_A/H application, or TPSMA9.1AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, TJ = 185 °C capability, low clamping ratio (VC/VBR ≈ 3.3), and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge conditions and high-temperature operation. Its 10/1000 μs waveform response delivers 50 A peak pulse current (IPPM) with only 29.9 V clamping voltage, enabling robust protection of downstream MOSFETs and ICs against inductive switching spikes.
The device is rated for 1.0 W steady-state power dissipation and exhibits low incremental surge resistance, ensuring minimal voltage overshoot during transient events. Its cathode-band polarity marking and matte tin-plated terminals comply with J-STD-002 solderability and JESD 22-B102 whisker testing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 8.65 / 9.10 / 9.55 V - ensures reliable turn-on above system operating voltage while avoiding false triggering |
| VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 10 μA, compatible with 5 V–7.5 V logic/sensor rails |
| VC @ IPPM | 29.9 V at 50 A - limits protected node voltage to safe levels during 400 W transient events |
| PPPM | 400 W (10/1000 μs) - sustains high-energy surges common in automotive load-dump and inductive kick scenarios |
| TJ max. | +185 °C - supports under-hood automotive applications and industrial environments without derating |
| IR @ VWM | 10 μA at 25 °C - low leakage preserves battery life in always-on sensor circuits |
| Package | SMA (DO-214AC) - industry-standard SMD footprint with 5.0 mm × 5.0 mm thermal pad layout for optimal heat dissipation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case meeting UL 94 V-0 flammability rating. Cathode identified by color band; terminals are matte tin plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., CAN_H, LIN, sensor supply); color band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
| Junction passivation | Reduces surface leakage and improves long-term stability under humidity and bias stress |
| MSL Level 1 | Unlimited floor life at ≤30 °C / 60 % RH; reflow-compatible up to 260 °C peak |
| Low clamping ratio | VC/VBR = 29.9/9.10 ≈ 3.29 - tighter than typical 3.5+ ratio, reducing stress on downstream components |
| High surge current handling | Withstands 40 A IFSM (8.3 ms half-sine) - protects against sustained overcurrent events like short-circuit recovery |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of engine coolant temperature (ECT) sensors exposed to alternator ripple and load-dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits voltage excursion to ≤29.9 V during 400 W transients, preserving ADC integrity and preventing latch-up in 3.3 V/5 V MCU interfaces. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers subject to relay coil flyback and ESD. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals upstream of optocoupler isolation stage. Use Value: Clamps 1 kV EFT bursts to <30 V within <1 ns, maintaining signal fidelity and preventing false triggering of input latching circuits. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Transient suppression on RS-485 bus lines in base station remote units subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed differential-mode between A/B lines and common-mode to ground. Use Value: Withstands repetitive 10/1000 μs surges up to 400 W while maintaining <10 μA leakage at 7.78 V, ensuring low standby power in always-on links. |
Use Scenario: Secondary-side overvoltage clamp in USB-C PD adapters where 9 V output rails require fail-safe protection. IC Role / Device Role / Timing Role: Standoff-rated TVS tied between +9 V output and GND to absorb output capacitor discharge spikes. Use Value: Activates at 8.65 V (min VBR) and clamps to 29.9 V, preventing damage to connected devices during no-load regulation faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | 9.0 V nominal VBR, 28.7 V VC @ 50 A, same SMA package but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial use only | Select when AEC-Q101 is not required and tighter VC is prioritized |
| 1.5SMC9.0A | DO-214AB (SMC) package, 9.0 V VBR, 27.1 V VC @ 52.5 A, higher PPPM = 1500 W | Larger footprint; better for high-energy surges but incompatible with SMA board space | Choose when surge energy exceeds 400 W and PCB layout allows SMC footprint |
Compared with SMAJ9.0A and 1.5SMC9.0A, the TPSMA9.1AHE3_A/H uniquely combines AEC-Q101 qualification, +185 °C operation, and optimized clamping for compact automotive and industrial sensor nodes - making it the preferred choice where qualification, thermal margin, and space constraints converge.
Availability
TPSMA9.1AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMA9.1AHE3_A/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 power MOSFETs with emphasis on reliability and high-temperature performance.
The TPSMA series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor family, engineered specifically for automotive-grade surge immunity and high-reliability industrial environments.
FAQ
What is the exact breakdown voltage range for TPSMA9.1AHE3_A/H?
The TPSMA9.1AHE3_A/H has a guaranteed breakdown voltage (VBR) range of 8.65 V (minimum) to 9.55 V (maximum) at 1.0 mA test current, with a nominal value of 9.10 V. This range is verified per ANSI/IEEE C62.35 and measured after 300 μs square-wave pulse application, ensuring consistent clamping behavior across production lots.
Is TPSMA9.1AHE3_A/H AEC-Q101 qualified?
Yes, TPSMA9.1AHE3_A/H is AEC-Q101 qualified - confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified construction. Qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge per JESD22-A114.
What is the maximum clamping voltage of TPSMA9.1AHE3_A/H and at what current is it specified?
The maximum clamping voltage (VC) of TPSMA9.1AHE3_A/H is 29.9 V, measured at 50 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and reflects worst-case clamping performance under standardized surge conditions.
Does TPSMA9.1AHE3_A/H have unidirectional or bidirectional polarity?
TPSMA9.1AHE3_A/H is unidirectional only - explicitly stated in the Vishay datasheet under FEATURES. It conducts in forward bias like a standard diode and clamps in reverse bias above VBR; no symmetrical breakdown is provided, and it must be oriented with cathode toward the protected line.
What is the thermal performance limit of TPSMA9.1AHE3_A/H?
The TPSMA9.1AHE3_A/H has a maximum junction temperature (TJ) rating of +185 °C, validated for continuous operation and transient surge conditions. This enables use in under-hood automotive locations and high-ambient industrial enclosures without thermal derating below 125 °C ambient.
TPSMA9.1AHE3_A/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:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for TPSMA9.1AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA9.1AHE3_A/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_A/H reliable?
The price and inventory of TPSMA9.1AHE3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA9.1AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA9.1AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA9.1AHE3_A/H?
TPSMA9.1AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA9.1AHE3_A/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_A/H?
For technical support, including TPSMA9.1AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA9.1AHE3_A/H requirements.
6.How does Aetrix verify that TPSMA9.1AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA9.1AHE3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA9.1AHE3_A/H?
All TPSMA9.1AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA9.1AHE3_A/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_A/H part is unused and in its original packaging.
Return procedure for TPSMA9.1AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA9.1AHE3_A/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
