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Vishay General Semiconductor - Diodes Division P4SMA100CAHM3/I
- Part No.:
- P4SMA100CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA100CAHM3/I.pdf
- Description:
- TVS DIODE 85.5VWM 137VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,197
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Product details
Overview
P4SMA100CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 100 V standoff voltage (VWM), 115 V minimum breakdown voltage (VBR), 137 V maximum clamping voltage (VC) at 2.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and telecom line drivers.
For engineers reviewing the P4SMA100CAHM3/I datasheet, P4SMA100CAHM3/I pinout, P4SMA100CAHM3/I application, or P4SMA100CAHM3/I equivalent, this device is selected for robust ESD and surge protection in automotive-grade (AEC-Q101 qualified), industrial, and communications systems where low-profile SMA packaging and bidirectional clamping symmetry are required.
Technical Context
The P4SMA100CAHM3/I operates as a bidirectional avalanche diode, exhibiting symmetrical clamping behavior in both polarities with no polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns) to transient events such as inductive switching spikes and lightning-induced surges.
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1 (260 °C peak reflow), it delivers 3.3 W steady-state power dissipation and maintains <1 µA reverse leakage at 85.5 V (90% of VWM), enabling reliable operation in high-temperature environments without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 85.5 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 95.0–105 V at 1 mA - Ensures predictable, repeatable avalanche initiation across production lots and temperature range. |
| VC (Clamping Voltage) | 137 V at IPPM = 2.2 A (10/1000 µs) - Limits downstream circuit voltage during surge, protecting 100 V-rated components. |
| PPPM (Peak Pulse Power) | 400 W - Sustains single 10/1000 µs transients without degradation; derates to 300 W above 91 V per spec. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimizes standby power loss and avoids false triggering in high-impedance sensing paths. |
| TJ max | 150 °C - Enables use in under-hood automotive modules and industrial controllers without active cooling. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TC, and ESD HBM/MM. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode band absent (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal 1 (cathode-band side not marked) | One end of symmetrical PN junction; interchangeable with cathode in bidirectional operation. |
| Cathode | Terminal 2 (opposite end) | Other end of symmetrical junction; no functional distinction from anode due to bidirectional design. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., RS-485, CAN FD) without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) when properly laid out on 5 mm × 5 mm copper pads. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity handling or baking. |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive powertrain, body control, and ADAS subsystems requiring zero-defect reliability. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving system immunity. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Data Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground, clamping transients before they reach ADC input or op-amp buffer. Use Value: Prevents sensor signal corruption and microcontroller reset during 12 V/24 V vehicle electrical disturbances per ISO 16750-2. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs connected to long cable runs subject to EFT and surge coupling. IC Role / Device Role / Timing Role: Placed across A/B differential pair and ground, providing symmetrical clamping to maintain common-mode rejection. Use Value: Maintains data integrity during 4 kV contact ESD (IEC 61000-4-2) and 1 kV surge (IEC 61000-4-5) without latch-up or parametric shift. |
| Telecom DSL Line Protection | Consumer Appliance Motor Driver Protection |
Use Scenario: Shielding ADSL/VDSL line interface ICs from lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: First-stage protector located at board edge, shunting energy before hybrid transformer and line driver. Use Value: Clamps induced surges to ≤137 V, preserving 100 V-rated front-end components and meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals, absorbing inductive kickback during PWM commutation or sudden stop. Use Value: Eliminates arcing at switch contacts and prevents MCU reset caused by conducted noise coupling into 3.3 V logic rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | Same VWM (85.5 V) and VC (137 V), but SMB package (DO-214AA) - 5.3 mm × 4.1 mm footprint, 30% larger area than SMA. | Preferred where higher thermal mass or legacy PCB layout reuse is needed; less suitable for ultra-dense layouts. | Select SMBJ100CA if board space allows larger pad area and higher IPC-7351B land pattern compatibility is required. |
| 1.5SMC100CA | Same electrical specs, but SMC (DO-214AB) package - 7.1 mm × 6.2 mm, rated for 1500 W peak pulse power (10/1000 µs). | Used in high-energy surge environments (e.g., AC mains input stages); over-specified for signal-line protection. | Choose 1.5SMC100CA only when >400 W pulse handling is mandated and board real estate permits larger footprint. |
Compared with SMBJ100CA and 1.5SMC100CA, the P4SMA100CAHM3/I offers identical clamping performance in the smallest surface-mount TVS package of the three, making it optimal for space-constrained automotive and portable telecom designs where AEC-Q101 compliance and MSL-1 reflow are mandatory.
Availability
P4SMA100CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom DSL line protection, and consumer appliance motor drivers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA100CAHM3/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 automotive-grade qualification.
The P4SMA series was developed for cost-effective, high-volume transient suppression in automotive, industrial, and communications equipment - prioritizing low profile, AEC-Q101 compliance, and consistent clamping performance across temperature and life cycle.
FAQ
What does the "CA" suffix indicate in P4SMA100CAHM3/I?
The "CA" suffix in P4SMA100CAHM3/I denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage clamping in both polarities, with no cathode marking and identical VBR and VC values for positive and negative surges. This differs from unidirectional "A" variants that require correct polarity orientation during placement.
Is P4SMA100CAHM3/I suitable for automotive applications?
Yes, P4SMA100CAHM3/I is AEC-Q101 qualified (indicated by the "HM3" suffix), having passed stress tests including high-temperature operating life, temperature cycling, and ESD. It is approved for use in automotive body electronics, infotainment interfaces, and ADAS sensor signal conditioning where robust transient immunity is required.
What is the maximum clamping voltage of P4SMA100CAHM3/I and under what test condition?
The maximum clamping voltage of P4SMA100CAHM3/I is 137 V, measured at a peak pulse current (IPPM) of 2.2 A using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events.
How does the HM3 suffix differ from E3 or M3 in P4SMA100CAHM3/I?
The "HM3" suffix in P4SMA100CAHM3/I indicates halogen-free, RoHS-compliant construction *and* AEC-Q101 qualification - whereas "E3" is RoHS-compliant commercial grade and "M3" is halogen-free RoHS-compliant commercial grade. Only HM3 and HE3 variants meet automotive reliability standards.
Can P4SMA100CAHM3/I be used in place of a unidirectional TVS like P4SMA100AHM3/I?
No - P4SMA100CAHM3/I is bidirectional and lacks polarity marking, while P4SMA100AHM3/I is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or differential buses; unidirectional is required for DC power rail protection where polarity must be preserved.
P4SMA100CAHM3/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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA100CAHM3/I FAQ
1.How can I place an order for P4SMA100CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA100CAHM3/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 P4SMA100CAHM3/I reliable?
The price and inventory of P4SMA100CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA100CAHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA100CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA100CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA100CAHM3/I?
P4SMA100CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA100CAHM3/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 P4SMA100CAHM3/I?
For technical support, including P4SMA100CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA100CAHM3/I requirements.
6.How does Aetrix verify that P4SMA100CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA100CAHM3/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 P4SMA100CAHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA100CAHM3/I?
All P4SMA100CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA100CAHM3/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 P4SMA100CAHM3/I part is unused and in its original packaging.
Return procedure for P4SMA100CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA100CAHM3/I Tags
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