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Vishay General Semiconductor - Diodes Division P4SMA36CAHE3_A/I
- Part No.:
- P4SMA36CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA36CAHE3_A/I.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
P4SMA36CAHE3_A/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 and power lines. It features a 36 V standoff voltage (VWM), 40.9 V minimum breakdown voltage (VBR), 49.9 V maximum clamping voltage (VC) at 8.0 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with a 10/1000 µs waveform. It is AEC-Q101 qualified and RoHS-compliant, targeting automotive sensor protection and industrial interface circuits.
For engineers reviewing the P4SMA36CAHE3_A/I datasheet, P4SMA36CAHE3_A/I pinout, P4SMA36CAHE3_A/I application, or P4SMA36CAHE3_A/I equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, AEC-Q101 qualification status, and direct alternatives for ESD and lightning transient suppression in bidirectional signal paths.
Technical Context
The P4SMA36CAHE3_A/I operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity dependence. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables rapid voltage limiting during fast-rising ESD or inductive-switching events.
Thermally, it exhibits a junction-to-ambient thermal resistance (RθJA) of 120 °C/W and supports continuous operation up to +150 °C junction temperature. It meets J-STD-020 MSL Level 1 and is rated for repetitive 0.01% duty cycle surges, with derating applied above TA = 25 °C per Figure 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 30.8 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 34.2–37.8 V at 1.0 mA - Verified avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 49.9 V at 8.0 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for IC-level stress limits. |
| PPPM | 400 W - Peak transient energy absorption capacity; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge testing. |
| ID (Leakage) | <1.0 µA at VWM - Negligible standby current; avoids loading sensitive analog or low-power signal lines. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per AEC standard. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional clamping path | Symmetric terminal-no polarity marking; both ends function identically for transient suppression in AC or differential lines. |
| Cathode | Current exit terminal in forward bias; common node for bidirectional clamping path | Identical to Anode in bidirectional configuration; device has no functional polarity-clamps equally in either direction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled, differential, or floating signal lines without polarity concerns. |
| 400 W peak pulse power | Supports robust immunity against IEC 61000-4-5 surges up to 1 kV open-circuit / 0.5 kV short-circuit test levels. |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime stress conditions. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensors, and infotainment interfaces. |
| MSL Level 1 handling | Allows unlimited floor life and reflow compatibility at peak temperatures up to 260 °C-no baking required pre-assembly. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485/RS-422 Bus Lines |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair or supply-to-ground to clamp ± transients before they reach signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends under ISO 7637-2 Pulse 1/2a/5a conditions. |
Use Scenario: Safeguarding full-duplex serial communication lines in factory automation PLCs exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Placed line-to-line and line-to-ground on twisted-pair bus segments to suppress common-mode and differential-mode surges. Use Value: Maintains data integrity during 4 kV EFT bursts and 10/700 µs telecom surges without signal distortion or downtime. |
| Consumer USB 2.0 Data Lines | Telecom DSL/ADSL Line Cards |
Use Scenario: Shielding D+ and D− pins of USB ports in set-top boxes and smart displays from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS mounted directly at connector to minimize stub length and preserve signal rise time. Use Value: Limits clamping voltage to <50 V during 8 kV contact discharge-below USB PHY damage thresholds-without degrading 480 Mbps signaling. |
Use Scenario: Front-end protection of ADSL line drivers and receivers in DSLAMs and customer premises equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge limiter on copper pair input, coordinated with gas discharge tube (GDT) secondary protection. Use Value: Absorbs initial 10/1000 µs surge energy (400 W) while holding line voltage below 55 V to prevent semiconductor failure in line interface ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36CA | Same VWM (30.8 V), identical clamping (49.9 V @ 8.0 A), but rated for 400 W only up to 36 V; higher VC tolerance above 91 V not applicable here. | Commercial-grade, non-AEC-Q101; suitable for industrial/commercial designs where automotive qualification is not mandated. | Select when cost sensitivity outweighs automotive qualification requirements and board space allows same SMA footprint. |
| SMCJ36CA | Higher PPPM (1500 W), larger SMC (DO-214AB) package; clamping voltage 58.1 V @ 25.5 A-less precise voltage control at lower currents. | Used where higher surge energy (e.g., IEC 61000-4-5 Level 4) must be absorbed, but requires PCB layout change due to larger body and pad size. | Choose only if system-level surge testing exceeds 400 W capability-requires redesign; not drop-in compatible. |
Compared with SMAJ36CA, P4SMA36CAHE3_A/I adds AEC-Q101 qualification and tighter manufacturing controls for automotive use; compared with SMCJ36CA, it trades surge headroom for compactness and precision clamping-ideal for space-constrained, automotive-grade signal protection.
Availability
P4SMA36CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, consumer USB port protection, and telecom line card surge mitigation requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P4SMA36CAHE3_A/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 reliability, efficiency, and application-specific performance.
The P4SMA series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and communications systems-designed for robustness, ease of automated assembly, and compliance with stringent environmental and safety standards.
FAQ
What is the clamping voltage of the P4SMA36CAHE3_A/I at its rated peak pulse current?
The P4SMA36CAHE3_A/I has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current (IPPM), measured using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects the actual voltage imposed on protected circuitry during surge events. The P4SMA36CAHE3_A/I maintains this clamping performance consistently due to its glass-passivated junction and tight VBR distribution.
Is the P4SMA36CAHE3_A/I suitable for automotive applications?
Yes, the P4SMA36CAHE3_A/I is AEC-Q101 qualified and specifically designated for automotive use via the "HE3" suffix and revision code "A". It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD robustness per AEC-Q101 requirements. Its -65 °C to +150 °C operating range and MSL Level 1 moisture sensitivity make it appropriate for under-hood and cabin-mounted ECUs, including those in ADAS and body control modules.
How does the bidirectional design of the P4SMA36CAHE3_A/I affect its placement on a PCB?
The P4SMA36CAHE3_A/I has no polarity marking and functions identically in both directions, so orientation on the PCB is irrelevant-either end may connect to line or return. This simplifies layout for differential signals (e.g., RS-485, CAN), AC-coupled paths, or floating grounds. Unlike unidirectional TVS diodes, the P4SMA36CAHE3_A/I eliminates risk of incorrect orientation during automated placement or manual assembly.
What is the maximum steady-state power dissipation of the P4SMA36CAHE3_A/I?
The P4SMA36CAHE3_A/I has a maximum steady-state power dissipation (PD) of 3.3 W when mounted on an infinite heatsink at TA = 50 °C. In typical surface-mount applications with standard 0.2" × 0.2" copper pads per terminal, derating applies above 25 °C ambient-per Figure 2 in the datasheet. This rating governs continuous leakage-related heating, not transient absorption, which is handled separately by the 400 W PPPM specification.
Does the P4SMA36CAHE3_A/I meet RoHS and halogen-free requirements?
Yes, the P4SMA36CAHE3_A/I carries the "HE3" suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. While not explicitly labeled "halogen-free" (which uses the "HM3" suffix), its material composition conforms to Vishay's commercial-grade RoHS directive compliance per document 99912. Full substance declarations and exemption documentation are available upon request from Aetrix Electronics for compliance reporting.
P4SMA36CAHE3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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)
P4SMA36CAHE3_A/I FAQ
1.How can I place an order for P4SMA36CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA36CAHE3_A/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 P4SMA36CAHE3_A/I reliable?
The price and inventory of P4SMA36CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA36CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA36CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA36CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA36CAHE3_A/I?
P4SMA36CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA36CAHE3_A/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 P4SMA36CAHE3_A/I?
For technical support, including P4SMA36CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA36CAHE3_A/I requirements.
6.How does Aetrix verify that P4SMA36CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA36CAHE3_A/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 P4SMA36CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA36CAHE3_A/I?
All P4SMA36CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA36CAHE3_A/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 P4SMA36CAHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA36CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA36CAHE3_A/I Tags
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