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Vishay General Semiconductor - Diodes Division P4SMA10CAHM3/H
- Part No.:
- P4SMA10CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10CAHM3/H.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,290
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Product details
Overview
P4SMA10CAHM3/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 10 V standoff voltage (VWM), 14.5 V maximum clamping voltage (VC) at 27.6 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and communication lines in automotive and industrial systems.
For engineers reviewing the P4SMA10CAHM3/H datasheet, P4SMA10CAHM3/H pinout, P4SMA10CAHM3/H application, or P4SMA10CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low thermal resistance (RθJL = 30 °C/W), and compatibility with automated SMT assembly on standard 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the low incremental surge resistance minimizes voltage overshoot during transient events.
The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity, supporting lead-free reflow up to 260 °C peak. Its 3.3 W steady-state power dissipation (PD) and 120 °C/W junction-to-ambient thermal resistance (RθJA) define its continuous thermal limits under PCB-constrained conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 10 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 10.5 V min / 11.6 V max at 1 mA - precise voltage threshold where avalanche conduction initiates reliably |
| VC (Clamping Voltage) | 14.5 V at 27.6 A IPPM - peak voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM (Peak Pulse Power) | 400 W - transient energy handling capacity per single 10/1000 μs event; derates above 25 °C ambient |
| ID (Reverse Leakage) | 5 μA max at 10 V - negligible standby current that avoids loading sensitive signal paths |
| TJ max | 150 °C - maximum junction temperature enabling operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (either polarity) | One terminal of symmetrical avalanche junction; accepts surge current regardless of voltage polarity |
| Cathode | Transient current exit point (either polarity) | Second terminal of symmetrical avalanche junction; completes low-impedance path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients common in automotive load-dump and inductive switching events |
| AEC-Q101 qualified + HM3 suffix | Confirms suitability for automotive electronics requiring extended temperature, vibration, and lifetime validation |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT processes without pre-baking or special handling |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and low leakage across temperature and life cycles |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units from ISO 7637-2 pulse 1 and pulse 2b transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended sensor lines to clamp surges before reaching ADC input or signal conditioner. Use Value: Limits voltage to ≤14.5 V during 27.6 A transients, preserving signal integrity and preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding CANH/CANL differential pair in vehicle body control modules against ESD and coupled noise. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor installed at connector entry point to shunt transients before transceiver input stage. Use Value: Maintains CAN signal fidelity with <5 μA leakage at 10 V, avoiding bus bias shift or false dominant states. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Fast-response TVS placed after primary polymer-based TVS to handle residual 8 kV contact discharge per IEC 61000-4-2. Use Value: Clamps sub-100 ns ESD events to <15 V, preventing damage to USB PHY without adding signal distortion. |
Use Scenario: Primary surge protection on twisted-pair DSL lines exposed to lightning-induced surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: High-power bidirectional suppressor mounted at line interface to divert >100 A surges away from line driver ICs. Use Value: Withstands 400 W peak pulses and maintains <14.5 V clamping, ensuring DSL modem remains operational after surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | Higher package thermal mass (SMB/DO-214AA); 600 W PPPM rating; same VWM/VC but larger footprint | Better suited for higher-repetition-rate surges due to lower RθJA (80 °C/W vs. 120 °C/W) | Select when board space allows larger package and higher sustained surge duty cycle is required |
| 1.5KE10CA | Through-hole (DO-201AE); 1500 W PPPM; higher VC (17.5 V); not AEC-Q101 qualified | Used in legacy industrial power supplies where manual assembly and higher surge margin are prioritized over SMT automation | Choose only for non-automated, high-energy, non-automotive applications where footprint and qualification are secondary |
Compared with SMBJ10CA and 1.5KE10CA, P4SMA10CAHM3/H offers optimal balance of AEC-Q101 compliance, SMT scalability, and compact SMA footprint - making it the preferred choice for new automotive and space-constrained industrial designs requiring validated reliability and automated manufacturing.
Availability
P4SMA10CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interfaces, consumer USB port hardening, and telecom DSL line surge suppression requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P4SMA10CAHM3/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications systems - delivering standardized TVS performance in compact, qualified, and manufacturable surface-mount packages.
FAQ
What is the clamping voltage of P4SMA10CAHM3/H at its rated peak pulse current?
The P4SMA10CAHM3/H has a maximum clamping voltage (VC) of 14.5 V at 27.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and represents the upper voltage limit imposed on protected circuitry during worst-case transient events. The P4SMA10CAHM3/H maintains this clamping performance bidirectionally, ensuring consistent protection regardless of surge polarity.
Is P4SMA10CAHM3/H qualified for automotive applications?
Yes, P4SMA10CAHM3/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification per AEC-Q101 requirements. The P4SMA10CAHM3/H is intended for use in engine control units, body electronics, and ADAS subsystems where reliability under harsh environmental conditions is mandatory.
What does the "CA" suffix indicate in P4SMA10CAHM3/H?
The "CA" suffix in P4SMA10CAHM3/H specifies a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., P4SMA10A), the P4SMA10CAHM3/H has no cathode marking and delivers identical VBR, VWM, and VC characteristics regardless of applied voltage polarity. This makes the P4SMA10CAHM3/H ideal for protecting AC-coupled, floating, or differential signal paths.
What is the maximum operating temperature for P4SMA10CAHM3/H?
The P4SMA10CAHM3/H has a maximum junction temperature (TJ max) of +150 °C and an operating junction/storage temperature range of −65 °C to +150 °C. Its thermal resistance values - RθJL = 30 °C/W (junction-to-lead) and RθJA = 120 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) - define its thermal derating envelope. Engineers must ensure PCB layout and system airflow keep the P4SMA10CAHM3/H within this limit during sustained power dissipation or repeated surge events.
How does P4SMA10CAHM3/H differ from P4SMA10A?
P4SMA10CAHM3/H is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas P4SMA10A is unidirectional with a cathode band and conducts only in reverse bias. The P4SMA10CAHM3/H has identical VWM (10 V), VBR (10.5–11.6 V), and VC (14.5 V) ratings but supports AC or floating applications where polarity reversal may occur. Both share the same SMA package, AEC-Q101 qualification (HM3), and 400 W PPPM rating - but the P4SMA10CAHM3/H eliminates need for polarity-aware layout.
P4SMA10CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- 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)
P4SMA10CAHM3/H FAQ
1.How can I place an order for P4SMA10CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10CAHM3/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 P4SMA10CAHM3/H reliable?
The price and inventory of P4SMA10CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA10CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA10CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10CAHM3/H?
P4SMA10CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10CAHM3/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 P4SMA10CAHM3/H?
For technical support, including P4SMA10CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10CAHM3/H requirements.
6.How does Aetrix verify that P4SMA10CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA10CAHM3/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 P4SMA10CAHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA10CAHM3/H?
All P4SMA10CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10CAHM3/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 P4SMA10CAHM3/H part is unused and in its original packaging.
Return procedure for P4SMA10CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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