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Vishay General Semiconductor - Diodes Division P4SMA10AHM3/H
- Part No.:
- P4SMA10AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10AHM3/H.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,374
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Product details
Overview
P4SMA10AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 10 V breakdown voltage (VBR = 9.5–10.5 V at IT = 1.0 mA), 14.5 V maximum clamping voltage (VC) at 27.6 A peak pulse current, and 400 W peak pulse power (10/1000 µs waveform). It protects MOSFETs and ICs against inductive switching transients in automotive power supplies.
For engineers reviewing the P4SMA10AHM3/H datasheet, P4SMA10AHM3/H pinout, P4SMA10AHM3/H application, or P4SMA10AHM3/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), polarity marking (cathode band), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This unidirectional TVS operates with a stand-off voltage (VWM) of 8.55 V and exhibits ≤10 µA reverse leakage at that voltage. Its fast response time and low incremental surge resistance enable effective suppression of sub-microsecond transients induced by relay or solenoid switching.
The device features glass passivated junction, meets MSL Level 1 per J-STD-020, and supports peak forward surge current (IFSM) up to 40 A (8.3 ms half-sine). Junction temperature range spans −65 °C to +150 °C, with thermal resistance from junction to ambient (RθJA) at 120 °C/W on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 9.5 V / 10.5 V at 1.0 mA - defines precise voltage threshold where avalanche conduction begins under controlled test conditions |
| VWM | 8.55 V - maximum continuous reverse operating voltage before significant leakage; ensures no false triggering during normal operation |
| VC @ IPPM | 14.5 V at 27.6 A - clamped voltage seen by protected circuit during worst-case 10/1000 µs transient, limiting stress on downstream components |
| PPPM | 400 W - peak transient energy absorption capability under standardized 10/1000 µs waveform, derated above 25 °C ambient |
| IFSM | 40 A - single half-sine surge rating (8.3 ms), critical for handling inrush or fault currents without bond wire failure |
| RθJA | 120 °C/W - thermal resistance indicating junction-to-ambient heating under PCB-mounted conditions with minimal copper area |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line; enables DC bias path when used in series with supply rail |
| Cathode | Current exit point during forward conduction; avalanche terminal during reverse transient | Marked with band; ties to higher-potential node (e.g., VCC rail); conducts transient energy to ground when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients common in 12 V automotive systems without requiring oversized layout |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units and body electronics where long-term reliability is mandatory |
| Glass passivated chip junction | Provides stable breakdown characteristics and enhanced moisture resistance versus epoxy-passivated alternatives |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without preconditioning or special handling requirements |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global OEMs and industrial equipment manufacturers |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump and jump-start transients on 12 V battery-fed microcontroller power rails in vehicle infotainment modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground, clamping surges before they reach LDO input. Use Value: Limits peak voltage to 14.5 V during 27.6 A transients, preventing overvoltage damage to 16 V-rated regulators and MCU power pins. |
Use Scenario: Shields analog front-end inputs of pressure sensors in factory automation PLCs from ESD and inductive kickback. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., RS-485 bus lines) referenced to local ground plane. Use Value: Clamps fast-rising transients (<1 ns rise time) to safe levels while maintaining <10 µA leakage at 8.55 V operating voltage. |
| Consumer Power Adapter Output Protection | Telecom DC Power Input Protection |
Use Scenario: Guards USB-C PD port output stages against accidental short-circuit-induced voltage spikes in portable chargers. IC Role / Device Role / Timing Role: Placed after buck converter output filter, shunting transient energy to ground during cable hot-plug events. Use Value: Withstands 40 A surge (IFSM) and clamps to ≤14.5 V, preserving integrity of downstream USB-PD controller and FET drivers. |
Use Scenario: Protects -48 V telecom rectifier outputs from lightning-induced surges entering via distribution wiring. IC Role / Device Role / Timing Role: Used in parallel with bulk capacitance on primary DC bus, absorbing repetitive 10/1000 µs pulses. Use Value: Delivers 400 W pulse handling with 0.073 %/°C VBR tempco, ensuring stable clamping across −40 °C to +85 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Same VBR range (9.5–10.5 V), but rated for 400 W with 8.3 ms IFSM = 30 A (vs. 40 A); RθJA = 135 °C/W | Lacks AEC-Q101 qualification; intended for commercial/industrial use only | Select SMAJ10A only if automotive qualification is not required and board-level thermal margin permits higher junction temperature rise. |
| 1.5SMC10A | Higher package thermal mass (SMC/DO-214AB); same VBR, VC, and PPPM, but RθJA = 100 °C/W and IFSM = 50 A | Requires larger PCB footprint (7.11 mm × 6.22 mm vs. SMA's 4.93 mm × 3.99 mm); better suited for high-reliability industrial power supplies | Choose 1.5SMC10A when higher surge endurance and lower thermal resistance justify increased board space and cost. |
Compared with SMAJ10A and 1.5SMC10A, P4SMA10AHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and compact SMA footprint-making it optimal for space-constrained automotive ECUs where regulatory compliance and thermal performance must coexist.
Availability
P4SMA10AHM3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, consumer adapter output safeguarding, and telecom DC input surge suppression requiring stable component supply across production lifecycles.
Supply support for P4SMA10AHM3/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific optimization.
The P4SMA Series targets surface-mount transient suppression in automotive, industrial, and telecom systems, delivering AEC-Q101-qualified robustness in compact SMA packages for high-volume automated assembly.
FAQ
What is the breakdown voltage tolerance for P4SMA10AHM3/H?
The P4SMA10AHM3/H has a specified breakdown voltage (VBR) range of 9.5 V to 10.5 V at 1.0 mA test current, representing ±5 % tolerance around the nominal 10 V rating. This tight tolerance ensures predictable clamping behavior in precision protection circuits and is confirmed in the Vishay P4SMA datasheet revision 09-Jan-2024, Table on page 2.
Is P4SMA10AHM3/H suitable for automotive applications?
Yes, P4SMA10AHM3/H is AEC-Q101 qualified and designated with the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full automotive stress testing including temperature cycling, high-temperature reverse bias, and ESD. It is explicitly recommended for engine control, body electronics, and infotainment systems per Vishay documentation.
What does the "H" in P4SMA10AHM3/H signify?
The final "H" in P4SMA10AHM3/H denotes the packaging configuration: 7-inch diameter plastic tape and reel, with 1800 units per reel. This is defined in the Vishay ordering information table (page 3 of document 88367), where "H" corresponds to standard reel size for automated SMT placement.
How does the clamping voltage of P4SMA10AHM3/H compare to its breakdown voltage?
P4SMA10AHM3/H clamps to a maximum of 14.5 V at 27.6 A peak pulse current (IPPM), which is approximately 45 % above its minimum breakdown voltage (9.5 V). This VC/VBR ratio reflects efficient avalanche conduction and low dynamic impedance, critical for protecting 12 V system components without excessive overvoltage exposure.
Can P4SMA10AHM3/H be used in bidirectional configurations?
No, P4SMA10AHM3/H is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA10CA) and lack polarity marking. Using P4SMA10AHM3/H in bidirectional signal paths would result in unintended forward conduction during negative transients.
P4SMA10AHM3/H 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):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA10AHM3/H FAQ
1.How can I place an order for P4SMA10AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10AHM3/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 P4SMA10AHM3/H reliable?
The price and inventory of P4SMA10AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA10AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA10AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10AHM3/H?
P4SMA10AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10AHM3/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 P4SMA10AHM3/H?
For technical support, including P4SMA10AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10AHM3/H requirements.
6.How does Aetrix verify that P4SMA10AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA10AHM3/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 P4SMA10AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA10AHM3/H?
All P4SMA10AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10AHM3/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 P4SMA10AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA10AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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