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Vishay General Semiconductor - Diodes Division P4SMA91CAHE3_A/I
- Part No.:
- P4SMA91CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA91CAHE3_A/I.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,701
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Product details
Overview
P4SMA91CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 91 V breakdown voltage (VBR = 86.5–95.5 V at 1 mA), 125 V maximum clamping voltage (VC) at 3.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting automotive sensor interfaces and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the P4SMA91CAHE3_A/I datasheet, P4SMA91CAHE3_A/I pinout, P4SMA91CAHE3_A/I application, or P4SMA91CAHE3_A/I equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability automotive and industrial PCB designs requiring robust transient immunity without layout redesign.
Technical Context
The P4SMA91CAHE3_A/I operates as a symmetrical bidirectional TVS diode, exhibiting identical clamping behavior in both polarities due to its back-to-back Zener junction structure. Its 91 V nominal breakdown voltage ensures precise overvoltage thresholding for 72–96 V DC systems, while the 125 V clamping voltage limits downstream stress under 3.2 A transient current.
Thermally, it sustains 150 °C maximum junction temperature with 120 °C/W junction-to-ambient thermal resistance (RθJA) on standard 0.2" × 0.2" copper pads. Its glass-passivated chip junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1 mA - defines precise overvoltage trip window for 91 V nominal rail protection |
| VWM | 77.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 125 V at 3.2 A - clamping voltage limiting stress on protected ICs during 10/1000 µs surge |
| PPPM | 400 W - peak pulse power handling capability per 10/1000 µs waveform, derated above 25 °C |
| IPPM | 3.2 A - maximum non-repetitive peak pulse current supported under standard test conditions |
| TJ max | 150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow without baking, simplifying SMT assembly |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One side of back-to-back Zener pair; conducts when voltage falls below -VBR |
| Cathode | Transient current entry (positive polarity) | Other side of back-to-back Zener pair; conducts when voltage exceeds +VBR |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 400 W peak pulse power | Handles high-energy transients from inductive load switching in motor control and solenoid drivers |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot during clamping, reducing stress on downstream 100 V-rated components |
| MSL Level 1 | Eliminates pre-reflow baking requirement, lowering manufacturing cost and cycle time |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting voltage excursions to ≤125 V during 3.2 A surges, preserving ADC input range and preventing latch-up in microcontrollers. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on differential input terminals, operating symmetrically across both polarities of the signal path. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) up to level 3 without additional series impedance or filtering. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges entering via RJ-45 ports in network edge equipment. IC Role / Device Role / Timing Role: First-stage transient suppressor mounted adjacent to connector, paired with common-mode chokes for differential-mode suppression. Use Value: Clamps common-mode surges to <125 V within nanoseconds, preventing damage to magnetics and PHY ICs rated for 100 V absolute maximum. |
Use Scenario: Protecting gate drivers and MCU I/O pins in washing machine and HVAC blower motor control modules from inductive kickback. IC Role / Device Role / Timing Role: Localized TVS across half-bridge driver supply rails and feedback signal lines to absorb MOSFET turn-off energy. Use Value: Extends system MTBF by suppressing >400 W transient spikes generated by 12 V/24 V relay coils and brushless motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | Higher 90 V VBR (85.5–94.5 V), same SMA package but 600 W PPPM, larger thermal footprint required | Preferred where higher surge margin is needed and board space allows SMB package | Select SMBJ90CA only if system-level surge testing requires >400 W headroom and layout accommodates larger SMB (DO-214AA) footprint |
| 1.5KE91CA | Through-hole TO-218 package, 91 V VBR, 1500 W PPPM, higher VC (139 V), no AEC-Q101 qualification | Suitable for prototyping or legacy through-hole designs; not automotive-qualified | Choose 1.5KE91CA for cost-sensitive industrial prototypes where AEC-Q101 is unnecessary and manual assembly is acceptable |
Compared with SMBJ90CA and 1.5KE91CA, the P4SMA91CAHE3_A/I uniquely combines AEC-Q101 qualification, SMA footprint compatibility with automated SMT lines, and optimized 400 W/125 V clamping performance - making it the preferred choice for volume automotive and industrial surface-mount designs requiring zero rework risk and traceable sourcing.
Availability
P4SMA91CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog input protection, and telecom line card surge immunity requiring stable component supply, full RoHS compliance, and AEC-Q101 validation.
Supply support for P4SMA91CAHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4SMA Series targets cost-effective, high-volume transient suppression in space-constrained applications - engineered specifically for AEC-Q101-compliant automotive electronics and ruggedized industrial controls requiring consistent clamping performance and MSL Level 1 manufacturability.
FAQ
What is the breakdown voltage tolerance for P4SMA91CAHE3_A/I?
The P4SMA91CAHE3_A/I has a specified breakdown voltage range of 86.5 V to 95.5 V at 1 mA test current, corresponding to ±5% tolerance around the nominal 91 V rating. This tight VBR spread ensures predictable clamping onset across production lots and temperature ranges, critical for protecting 72–96 V DC systems where overvoltage thresholds must remain within defined safety margins. The P4SMA91CAHE3_A/I maintains this specification under standard test conditions per JEDEC standards.
Is P4SMA91CAHE3_A/I suitable for automotive applications?
Yes, the P4SMA91CAHE3_A/I is explicitly AEC-Q101 qualified, with full test documentation covering HTGB, HTRB, temperature cycling, and ESD robustness. Its RoHS-compliant construction, MSL Level 1 rating, and 150 °C maximum junction temperature make it suitable for under-hood and cabin ECU applications. The P4SMA91CAHE3_A/I meets automotive-grade reliability requirements without derating for ambient temperatures up to 125 °C in typical PCB layouts.
What is the maximum clamping voltage of P4SMA91CAHE3_A/I and at what current?
The P4SMA91CAHE3_A/I exhibits a maximum clamping voltage (VC) of 125 V at a peak pulse current (IPPM) of 3.2 A, measured using the standardized 10/1000 µs double-exponential waveform. This clamping performance ensures that protected downstream components - such as 100 V-rated op-amps or microcontroller I/O pins - experience no more than 125 V during worst-case transients. The P4SMA91CAHE3_A/I achieves this with a low clamping ratio of approximately 1.31 (125 V / 95.5 V).
Does P4SMA91CAHE3_A/I require special PCB layout considerations?
Yes - to achieve rated 400 W pulse power, the P4SMA91CAHE3_A/I must be mounted on minimum recommended copper pad areas: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal. Smaller pads reduce thermal dissipation and cause premature failure under repeated surges. The P4SMA91CAHE3_A/I also benefits from short, direct traces to ground or return paths to minimize inductance, especially in high-frequency transient scenarios like ESD events. No thermal vias are required due to its MSL Level 1 rating.
How does the HE3 suffix affect P4SMA91CAHE3_A/I's specifications?
The HE3 suffix on P4SMA91CAHE3_A/I denotes RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from commercial-grade E3 variants. This includes enhanced process controls for wafer-level reliability testing, extended temperature cycling validation, and stricter lot traceability. All electrical parameters (VBR, VC, PPPM) remain identical to non-HE3 versions, but the P4SMA91CAHE3_A/I carries full automotive qualification documentation and is approved for use in safety-critical vehicle subsystems.
P4SMA91CAHE3_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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- 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)
P4SMA91CAHE3_A/I FAQ
1.How can I place an order for P4SMA91CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA91CAHE3_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 P4SMA91CAHE3_A/I reliable?
The price and inventory of P4SMA91CAHE3_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 P4SMA91CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA91CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA91CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA91CAHE3_A/I?
P4SMA91CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA91CAHE3_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 P4SMA91CAHE3_A/I?
For technical support, including P4SMA91CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA91CAHE3_A/I requirements.
6.How does Aetrix verify that P4SMA91CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA91CAHE3_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 P4SMA91CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA91CAHE3_A/I?
All P4SMA91CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA91CAHE3_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 P4SMA91CAHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA91CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA91CAHE3_A/I Tags
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