My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA9.1AHE3/5A
- Part No.:
- P4SMA9.1AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA9.1AHE3/5A.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,350
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA9.1AHE3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 7.78 V maximum stand-off voltage (VWM), 13.4 V clamping voltage (VC) at 29.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the P4SMA9.1AHE3/5A datasheet, P4SMA9.1AHE3/5A pinout, P4SMA9.1AHE3/5A application, or P4SMA9.1AHE3/5A equivalent, this device delivers AEC-Q101 qualification, SMA (DO-214AC) package compatibility, low incremental surge resistance, and fast response time - critical for ESD and load-switching transient suppression in space-constrained PCB layouts.
Technical Context
The P4SMA9.1AHE3/5A operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<50 µA at VWM), while thermal resistance (RθJA = 120 °C/W) supports operation up to TJ = 150 °C under defined pad layout conditions.
It is rated for 40 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), complies with MSL Level 1 per J-STD-020, and achieves UL 94 V-0 flammability rating in its SMA molding compound - enabling use in automotive-grade designs requiring long-term reliability under thermal cycling and humidity exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA test current - defines precise conduction onset for accurate overvoltage triggering |
| Stand-off Voltage VWM | 7.78 V maximum - ensures no conduction during normal 5 V or 9 V rail operation |
| Clamping Voltage VC | 13.4 V at 29.9 A IPPM - limits downstream voltage stress during 10/1000 µs transients |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - sustains high-energy surges without failure under standard test conditions |
| Operating Temperature | -65 °C to +150 °C - supports under-hood automotive and industrial ambient environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronic systems per stress test requirements |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
SMA (DO-214AC) package: molded plastic case with matte tin-plated leads, cathode indicated by band; dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); mounted on 5.0 mm × 5.0 mm copper pads per terminal for thermal and power derating compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / reverse voltage reference node | Connected to system ground or low-side return path in unidirectional TVS configuration |
| Cathode | Reverse-biased terminal / clamping output node | Connected to protected line (e.g., 9 V supply rail or sensor input) - conducts when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage across temperature and lifetime |
| 400 W peak pulse power (10/1000 µs) | Protects against IEC 61000-4-5 Level 3 surges (1 kV/42 Ω) without degradation |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS subsystems |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free soldering without moisture-related delamination risk |
| UL 94 V-0 flammability rating | Meets safety standards for enclosed industrial and automotive enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump and alternator ripple transients on 9 V auxiliary power rails in vehicle infotainment modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 9 V supply and ground, clamping spikes above 13.4 V within nanoseconds. Use Value: Prevents latch-up or permanent damage to LDO regulators and microcontrollers exposed to ISO 7637-2 Pulse 5a/b events. |
Use Scenario: Shields analog front-end inputs of pressure or temperature sensors in PLC I/O modules from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line (e.g., 4–20 mA loop or 0–10 V input), activated only during overvoltage faults. Use Value: Maintains sub-µA leakage at 7.78 V, preserving signal integrity while limiting fault voltage to 13.4 V during 1 kV EFT bursts. |
| Consumer USB Power Port Protection | Telecom DC Feeder Line Protection |
Use Scenario: Guards 5 V/9 V USB PD power delivery paths in smart home hubs against ESD and hot-plug transients. IC Role / Device Role / Timing Role: Primary-level TVS on VBUS line, positioned upstream of USB controller and power switch. Use Value: Responds in <1 ns to ±15 kV contact ESD (IEC 61000-4-2), clamping below IC absolute maximum ratings. |
Use Scenario: Protects -48 V DC telecom feeder lines from lightning-induced surges in remote radio units. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to negative rail, absorbing positive-going transients on feed line. Use Value: Withstands 400 W pulses while maintaining 7.78 V standoff - avoids false triggering during nominal -48 V operation. |
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 | Higher 9.0 V nominal VBR (8.55–9.45 V), SMB package (larger footprint, RθJA = 100 °C/W) | Lower power density; suited for less space-constrained boards with higher thermal mass | Select when board layout allows larger SMB footprint and higher thermal dissipation margin is required |
| 1.5SMC9.0A | Same VBR range, SMC package (7.11 mm × 6.22 mm), 1500 W PPPM rating | Designed for higher-energy surges (e.g., AC mains coupling), not optimized for fine-pitch automotive PCBs | Choose only when system-level surge testing requires >400 W capability and SMC mounting is acceptable |
Compared with SMBJ9.0A and 1.5SMC9.0A, the P4SMA9.1AHE3/5A offers superior board-area efficiency in automotive and portable industrial designs, tighter VBR tolerance, and guaranteed AEC-Q101 qualification - making it the preferred choice where space, qualification, and precision clamping are prioritized over raw power rating.
Availability
P4SMA9.1AHE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer USB power protection requiring stable component supply, AEC-Q101 compliance, and consistent 9.1 V clamping performance.
Supply support for P4SMA9.1AHE3/5A 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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The P4SMA9.1AHE3/5A belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, low-leakage transient suppression in high-reliability automotive and industrial power and signal lines.
FAQ
What is the breakdown voltage tolerance of P4SMA9.1AHE3/5A?
The P4SMA9.1AHE3/5A has a specified breakdown voltage range of 8.65 V to 9.55 V at 1.0 mA test current, corresponding to a ±5% tolerance around the nominal 9.1 V rating. This tight tolerance ensures predictable clamping behavior across production lots and temperature ranges, critical for protecting 9 V logic rails without premature conduction. The value is verified per Vishay Document Number 88367, Revision 09-Jan-2024.
Is P4SMA9.1AHE3/5A suitable for automotive applications?
Yes, P4SMA9.1AHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It meets stress test requirements including temperature cycling, humidity bias, and mechanical shock - validated for under-hood and cabin-mounted ECUs. Its 150 °C max junction temperature and MSL Level 1 reflow compatibility further confirm its readiness for automotive manufacturing processes.
What is the maximum clamping voltage of P4SMA9.1AHE3/5A at rated peak pulse current?
The P4SMA9.1AHE3/5A exhibits a maximum clamping voltage (VC) of 13.4 V at its rated peak pulse current (IPPM) of 29.9 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is essential for ensuring downstream components remain within their absolute maximum ratings.
Does P4SMA9.1AHE3/5A have bidirectional capability?
No, P4SMA9.1AHE3/5A is a unidirectional TVS diode, indicated by the "A" suffix (as opposed to "CA" for bidirectional variants). It conducts only when reverse voltage exceeds its breakdown threshold - the cathode band marks the terminal connected to the protected line. For AC or dual-polarity signal protection, a bidirectional variant such as P4SMA9.0CA must be selected instead.
What package type does P4SMA9.1AHE3/5A use and what are its key mechanical features?
P4SMA9.1AHE3/5A uses the SMA (DO-214AC) surface-mount package: 4.93 mm × 3.99 mm × 2.29 mm body with matte tin-plated leads, UL 94 V-0 compliant molding compound, and cathode band marking. Its compact size supports high-density PCB layouts, and the package is qualified for lead-free reflow up to 260 °C (MSL Level 1), enabling compatibility with modern automated assembly lines.
P4SMA9.1AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 29.9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA9.1AHE3/5A FAQ
1.How can I place an order for P4SMA9.1AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA9.1AHE3/5A 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 P4SMA9.1AHE3/5A reliable?
The price and inventory of P4SMA9.1AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA9.1AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA9.1AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA9.1AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA9.1AHE3/5A?
P4SMA9.1AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA9.1AHE3/5A 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 P4SMA9.1AHE3/5A?
For technical support, including P4SMA9.1AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA9.1AHE3/5A requirements.
6.How does Aetrix verify that P4SMA9.1AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA9.1AHE3/5A 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 P4SMA9.1AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA9.1AHE3/5A?
All P4SMA9.1AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA9.1AHE3/5A, 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 P4SMA9.1AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA9.1AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA9.1AHE3/5A 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 …
