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Vishay General Semiconductor - Diodes Division P4SMA82CAHM3_A/H
- Part No.:
- P4SMA82CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA82CAHM3_A/H.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,503
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Product details
Overview
P4SMA82CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 70.1 V standoff voltage (VWM), 77.9–86.1 V breakdown voltage (VBR) at 1 mA, 113 V maximum clamping voltage (VC) at 3.5 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and communication lines in automotive and industrial electronics.
For engineers reviewing the P4SMA82CAHM3_A/H datasheet, P4SMA82CAHM3_A/H pinout, P4SMA82CAHM3_A/H application, or P4SMA82CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
The P4SMA82CAHM3_A/H operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity dependence. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 µA at VWM), while meeting MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
It delivers 400 W peak pulse power (derated to 300 W above 91 V) under 10/1000 µs waveform conditions when mounted on 0.2" × 0.2" copper pads. Junction temperature range spans −65 °C to +150 °C, supporting operation in harsh environments including automotive under-hood and industrial motor control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 70.1 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 77.9–86.1 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during ESD or surge events. |
| VC (Clamping Voltage) | 113 V at IPPM = 3.5 A - Peak voltage seen by protected circuit during 10/1000 µs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity for single 10/1000 µs surge; derates to 300 W above 91 V per spec. |
| ID (Reverse Leakage) | <1 µA at VWM - Minimal standby current; preserves signal integrity and battery life in always-on circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables use in high-ambient environments like engine control units. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient; informs board-level thermal design for sustained power dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. No polarity marking - bidirectional device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative surges; symmetrical with cathode for bidirectional clamping. |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive surges; identical electrical behavior to anode due to bidirectional construction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns. |
| AEC-Q101 qualification | Validated for automotive applications including infotainment, ADAS sensors, and body electronics. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-line) when properly mounted. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C without preconditioning - simplifies manufacturing flow. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD > 15 kV). |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp absorbing ±100 V transients while maintaining signal fidelity below 70.1 V. Use Value: Prevents sensor IC latch-up or damage during vehicle battery disconnection events without adding polarity-sensitive components. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair against ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF) bidirectional suppressor placed across bus lines near connector. Use Value: Maintains CAN signal integrity up to 1 Mbps while suppressing ±8 kV contact ESD per IEC 61000-4-2. |
| Consumer USB Port Protection | Telecom DSL Line Interface |
Use Scenario: Shielding USB 2.0 D+/D− lines in set-top boxes from user-handling ESD and hot-swap transients. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) TVS limiting voltage to ≤113 V during 15 kV air discharge. Use Value: Eliminates need for discrete RC filters while meeting USB-IF ESD immunity requirements. |
Use Scenario: Front-end surge suppression on twisted-pair DSL lines subject to lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Primary protection device rated for 400 W 10/1000 µs waveform, coordinated with gas discharge tube (GDT) secondary stage. Use Value: Enables robust Class B (10 kA) surge withstand capability with minimal PCB footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85CA | Higher VWM (72.2 V), higher VC (125 V), SMB package (larger footprint, lower RθJA = 80 °C/W) | Better thermal performance but requires larger PCB area; not AEC-Q101 qualified in standard grade | Select when higher power derating margin or lower thermal resistance is prioritized over space-constrained layouts. |
| 1.5KE82CA | Through-hole DO-201 package, same VWM/VC specs, 1500 W peak power rating | Designed for legacy through-hole assembly; unsuitable for high-density SMT production | Choose only for repair, prototyping, or non-automated manufacturing where reflow compatibility is not required. |
Compared with P4SMA82CAHM3_A/H, SMBJ85CA offers superior thermal management but sacrifices board space and automotive qualification, while 1.5KE82CA provides higher surge capacity at the cost of modern SMT compatibility and AEC-Q101 validation - making P4SMA82CAHM3_A/H optimal for space-constrained, automotive-grade SMT designs.
Availability
P4SMA82CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, consumer USB port hardening, and telecom DSL line safeguarding requiring stable component supply, halogen-free compliance, and AEC-Q101 assurance.
Supply support for P4SMA82CAHM3_A/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 is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The P4SMA Series targets cost-effective, high-volume transient suppression in automotive, industrial, and consumer electronics - engineered for automated SMT assembly, AEC-Q101 compliance, and robust 10/1000 µs surge handling in compact SMA packages.
FAQ
What does the "CA" suffix indicate in P4SMA82CAHM3_A/H?
The "CA" suffix in P4SMA82CAHM3_A/H denotes a bidirectional configuration - meaning the device clamps voltage transients equally in both polarities, with no cathode band marking. This distinguishes it from unidirectional variants (e.g., P4SMA82AHM3_A/H) and enables use on AC-coupled or differential signal paths without polarity alignment during placement. The P4SMA82CAHM3_A/H maintains identical VWM, VBR, and VC specifications in either direction.
Is P4SMA82CAHM3_A/H qualified for automotive applications?
Yes, P4SMA82CAHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure ("HM3" = halogen-free + RoHS + AEC-Q101) and documentation revision notes. It is rated for operation from −65 °C to +150 °C and meets MSL Level 1 for lead-free reflow, making it suitable for under-hood and cabin electronics including engine control units, ADAS camera modules, and body control modules.
What is the maximum clamping voltage of P4SMA82CAHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of P4SMA82CAHM3_A/H is 113 V, measured at a peak pulse current (IPPM) of 3.5 A using the standardized 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during a transient event and is critical for ensuring downstream ICs remain within their absolute maximum ratings. VC remains consistent across both polarities due to the device's bidirectional symmetry.
How does the HM3 suffix differ from E3 or M3 in P4SMA82CAHM3_A/H?
The "HM3" suffix in P4SMA82CAHM3_A/H specifies halogen-free, RoHS-compliant construction with full AEC-Q101 qualification - unlike "E3" (RoHS commercial grade) or "M3" (halogen-free RoHS commercial grade). The "H" denotes 7-inch tape-and-reel packaging (1800 units/reel), while "_A/H" indicates revision level "A" and packaging variant "H". This makes P4SMA82CAHM3_A/H distinct in automotive suitability, material compliance, and logistics formatting.
Can P4SMA82CAHM3_A/H replace P4SMA82AHE3_A/H in a design?
No - P4SMA82CAHM3_A/H is bidirectional (CA), whereas P4SMA82AHE3_A/H is unidirectional (A). Their electrical behaviors differ fundamentally: the latter conducts only in reverse bias and requires correct cathode orientation, while the former clamps symmetrically. Substituting them without circuit review risks failure to suppress positive transients or unintended forward conduction. Always verify polarity requirements before interchange.
P4SMA82CAHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- 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)
P4SMA82CAHM3_A/H FAQ
1.How can I place an order for P4SMA82CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA82CAHM3_A/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 P4SMA82CAHM3_A/H reliable?
The price and inventory of P4SMA82CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA82CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA82CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA82CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA82CAHM3_A/H?
P4SMA82CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA82CAHM3_A/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 P4SMA82CAHM3_A/H?
For technical support, including P4SMA82CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA82CAHM3_A/H requirements.
6.How does Aetrix verify that P4SMA82CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA82CAHM3_A/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 P4SMA82CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA82CAHM3_A/H?
All P4SMA82CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA82CAHM3_A/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 P4SMA82CAHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA82CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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