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Vishay General Semiconductor - Diodes Division P4SMA100AHM3/I
- Part No.:
- P4SMA100AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA100AHM3/I.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,496
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Product details
Overview
P4SMA100AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 100 V standoff voltage (VWM), 105 V minimum breakdown voltage (VBR), and 137 V maximum clamping voltage (VC) at 2.2 A peak pulse current (IPPM), designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in industrial and automotive electronics.
For engineers reviewing the P4SMA100AHM3/I datasheet, P4SMA100AHM3/I pinout, P4SMA100AHM3/I application, or P4SMA100AHM3/I equivalent, key selection criteria include clamping performance under 10/1000 μs surge, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
The P4SMA100AHM3/I operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast response time (<1 ns) and low incremental surge resistance. Its clamping action begins at VBR ≥95 V and limits transient voltage to ≤137 V at IPPM = 2.2 A under standardized 10/1000 μs waveform conditions.
Thermally, it supports operation from –65 °C to +150 °C junction temperature, with power dissipation derated above TA = 25 °C per Figure 2. The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications - confirmed by HM3 suffix and revision code "I" denoting production lot compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 85.5 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 95.0–105 V at IT = 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 137 V at IPPM = 2.2 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for downstream component survivability. |
| PPPM | 400 W - Peak pulse power handling capability under 10/1000 μs waveform; enables robust protection against common ESD and load-dump transients. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; determines required board layout for thermal management. |
| TJ max. | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and high-temperature industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to ground or low-side return path in unidirectional TVS configuration; defines reference for clamping action. |
| Cathode | Reverse voltage input / Clamping output | Connected to protected line (e.g., power rail or signal); conducts avalanche current to anode when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges without external series impedance. |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress and high-humidity environments. |
| AEC-Q101 qualified (HM3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without moisture-induced cracking or delamination. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients up to 35 V and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp positive-going surges before they reach LDOs or microcontrollers. Use Value: Limits clamped voltage to 137 V while absorbing 400 W peak energy, preventing latch-up or gate oxide damage in downstream semiconductors. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector interface to suppress sub-100 ns transients before reaching ADC input stages. Use Value: Achieves <1 ns response time and 137 V clamping at 2.2 A, preserving signal integrity and avoiding false readings during transient exposure. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
Use Scenario: Safeguarding PoE-powered switches and media converters against induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input stage, coordinated with upstream fuse and secondary filtering. Use Value: Handles repetitive 400 W surges at 0.01% duty cycle, enabling reliable operation in outdoor telecom cabinets with minimal derating. |
Use Scenario: Adding secondary-level surge immunity to USB 2.0 data lines and VBUS in smart home hubs and portable chargers. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS rail only (not data lines), sized for 100 V standoff to avoid interference with 5 V regulation. Use Value: Provides 137 V clamping at 2.2 A without affecting normal 5 V operation or USB enumeration timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A-E3/5A | Same VWM (85.5 V), VBR (95–105 V), VC (137 V), but rated for 400 W with 10/1000 μs waveform and not AEC-Q101 qualified. | Commercial-grade only; lacks automotive qualification and halogen-free certification. | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive compliance needs. |
| 1.5SMC100A | Higher package thermal resistance (RθJA ≈ 150 °C/W), same electrical specs, but DO-214AB (SMB) package - 1.6 mm taller and 0.3 mm wider than SMA. | Requires PCB layout change due to larger footprint and different pad geometry; less suitable for space-constrained automotive modules. | Choose only if existing SMB footprint is fixed and thermal margin allows higher RθJA. |
Compared with SMAJ100A-E3/5A and 1.5SMC100A, the P4SMA100AHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, and SMA package compactness - making it the preferred choice for next-generation automotive and industrial designs demanding both reliability and miniaturization.
Availability
P4SMA100AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power supplies, and consumer USB power protection requiring stable component supply across multi-year production cycles.
Supply support for P4SMA100AHM3/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, MOSFETs, and protection devices with emphasis on high-reliability, high-efficiency, and application-specific performance.
The P4SMA Series targets surface-mount transient suppression in space-constrained, high-reliability applications - engineered for automotive, industrial, and telecom systems where consistent clamping, AEC-Q101 validation, and automated assembly compatibility are mandatory.
FAQ
What is the clamping voltage of the P4SMA100AHM3/I at its rated peak pulse current?
The P4SMA100AHM3/I has a maximum clamping voltage (VC) of 137 V at its rated peak pulse current (IPPM) of 2.2 A under the standardized 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet 88367, and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the P4SMA100AHM3/I qualified for automotive applications?
Yes, the P4SMA100AHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and revision code "I" in the ordering part number. It meets the full suite of stress tests defined in AEC-Q101, including temperature cycling, high-temperature operating life, and mechanical shock - making it suitable for under-hood and chassis-mounted automotive modules where reliability under harsh environmental conditions is essential.
What does the "HM3" suffix indicate in P4SMA100AHM3/I?
The "HM3" suffix in P4SMA100AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "M" signifies halogen-free molding compound, and "3" confirms RoHS compliance per EU Directive 2011/65/EU - all verified in Vishay's ordering information table on page 3 of document 88367.
Can the P4SMA100AHM3/I be used in bidirectional configurations?
No, the P4SMA100AHM3/I is a unidirectional TVS diode, as indicated by the "A" (not "CA") in its part number and the presence of a cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA100CA). Using this part in reverse-biased configurations will result in forward conduction rather than symmetrical clamping, so it must be oriented with cathode toward the protected line.
What is the thermal resistance of the P4SMA100AHM3/I, and how does it affect PCB layout?
The P4SMA100AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Thermal Characteristics table on page 3 of the datasheet. This value assumes minimum recommended pad layout; reducing pad area increases RθJA and risks exceeding TJ max. = +150 °C during repetitive surges - so designers must maintain specified copper land patterns for thermal compliance.
P4SMA100AHM3/I 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):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- 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)
P4SMA100AHM3/I FAQ
1.How can I place an order for P4SMA100AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA100AHM3/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 P4SMA100AHM3/I reliable?
The price and inventory of P4SMA100AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA100AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA100AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA100AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA100AHM3/I?
P4SMA100AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA100AHM3/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 P4SMA100AHM3/I?
For technical support, including P4SMA100AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA100AHM3/I requirements.
6.How does Aetrix verify that P4SMA100AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA100AHM3/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 P4SMA100AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA100AHM3/I?
All P4SMA100AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA100AHM3/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 P4SMA100AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA100AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA100AHM3/I Tags
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