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Vishay General Semiconductor - Diodes Division P6SMB12CAHE3/52
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- Part No.:
- P6SMB12CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB12CAHE3/52.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,044
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Product details
Overview
P6SMB12CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 12 V standoff voltage (VWM), 16.7 V maximum clamping voltage (VC) at 35.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFET gates, sensor interfaces, and automotive control modules.
For engineers reviewing the P6SMB12CAHE3/52 datasheet, P6SMB12CAHE3/52 pinout, P6SMB12CAHE3/52 application, or P6SMB12CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.39), RoHS-compliant matte tin terminals, and MSL Level 1 moisture sensitivity.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding its breakdown threshold (11.4–12.6 V at 1 mA), it avalanches rapidly (<1 ns response) to divert surge current away from downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Thermally, it sustains 150 °C junction temperature with 100 °C/W junction-to-ambient thermal resistance (RθJA) on standard 0.2" × 0.2" copper pads. The glass-passivated junction ensures stable leakage (<5 μA at 10.2 V) and long-term reliability under repetitive surge stress at 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 10.2 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping onset. |
| VBR (Breakdown) | 11.4–12.6 V at 1 mA - Verified avalanche initiation range; ensures predictable turn-on across production lots. |
| VC (Clamping) | 16.7 V at 35.9 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines minimum IC withstand rating. |
| PPPM | 600 W - Sustained single-pulse energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge compliance. |
| IPPM | 35.9 A - Peak surge current diverted during 10/1000 μs transient; defines minimum PCB trace width and fuse coordination. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD22 standards. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 solderability and JESD22-B102 whisker testing. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (bidirectional) | Conducts surge current in either direction; connects to line being protected (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current sink (bidirectional) | Electrically identical to Anode in CA devices; forms symmetrical clamping path with Anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines (e.g., USB D+/D−, CAN bus) without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements up to 4 kV open-circuit voltage with 2 Ω source impedance. |
| AEC-Q101 qualification | Validated for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling prior to assembly. |
| Glass-passivated junction | Ensures stable leakage current (<5 μA) and minimal parameter drift over 10+ years of operation in harsh environments. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed between sensor signal line and ground, clamping transients before they reach ADC input or op-amp buffer. Use Value: Maintains signal integrity during 12 V system load dump events (up to 60 V, 100 ms) while preserving <5 μA leakage for high-impedance sensor bias networks. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamp across differential pair (A/B) referenced to ground, limiting common-mode and differential-mode overvoltages simultaneously. Use Value: Achieves >30 kV ESD contact discharge immunity and 4 kV IEC 61000-4-5 surge protection without distorting 10 Mbps data eye due to low 100 pF junction capacitance at 0 V. |
| Consumer USB Port Protection | DC Power Rail Clamp |
|
Use Scenario: Guarding USB 2.0 data lines in portable medical devices against ESD events during hospital handling and docking. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with D+ and D− traces, grounded via shortest possible path to chassis. Use Value: Clamps ±15 kV air/±8 kV contact ESD per IEC 61000-4-2 with <0.5 ns response, preventing latch-up in USB PHY without degrading 480 Mbps signal rise time. |
Use Scenario: Suppressing switching noise and inductive kickback on 12 V DC input rails of embedded controllers in smart lighting systems. IC Role / Device Role / Timing Role: Parallel-connected TVS between rail and ground, activated only during overvoltage excursions exceeding 10.2 V. Use Value: Absorbs 600 W surge energy from relay coil flyback or hot-plug insertion, preventing brownout resets and maintaining 5 V regulator input stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12CA | Same VWM (10.2 V) and VC (16.7 V), but lower PPPM (400 W); SMA package (DO-214AC), larger footprint than SMB. | Less suitable for space-constrained automotive modules; requires larger pad layout and higher RθJA (140 °C/W). | Select when cost priority outweighs board area and thermal performance; verify layout clearance for SMA vs. SMB. |
| 1.5KE12CA | Higher PPPM (1500 W), axial-leaded DO-15 package; VC = 19.2 V at 78.1 A - looser clamping ratio (1.59 vs. 1.39). | Not SMT-compatible; unsuitable for automated assembly or vibration-prone environments; higher parasitic inductance limits high-speed ESD response. | Choose only for legacy through-hole designs or where extreme surge energy (>600 W) dominates over board density and ESD speed. |
Compared with SMAJ12CA and 1.5KE12CA, P6SMB12CAHE3/52 delivers optimal balance of compact SMB packaging, AEC-Q101 qualification, tight 1.39 clamping ratio, and full 600 W surge capability - making it the preferred choice for new automotive and industrial SMT designs requiring validated reliability and minimal PCB real estate.
Availability
P6SMB12CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interfaces, consumer USB port hardening, and DC power rail clamping requiring stable component supply across extended product lifecycles.
Supply support for P6SMB12CAHE3/52 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 high-reliability and automotive-grade solutions.
The P6SMB Series targets robust transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, low clamping voltage, and compatibility with automated SMT assembly processes.
FAQ
What does the "CA" suffix indicate in P6SMB12CAHE3/52?
The "CA" suffix denotes a bidirectional configuration: P6SMB12CAHE3/52 provides symmetrical clamping for both positive and negative transients, unlike unidirectional variants (e.g., P6SMB12A). This makes it ideal for protecting AC-coupled signals, differential buses like CAN or RS-485, and floating sensor outputs where polarity reversal may occur. The device has no cathode band marking, confirming its bidirectional nature.
Is P6SMB12CAHE3/52 qualified for automotive applications?
Yes, P6SMB12CAHE3/52 carries the HE3 suffix, indicating RoHS-compliant construction and full AEC-Q101 qualification. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22 standards - validating its suitability for under-hood engine control units, ADAS camera modules, and body electronics where zero-field failures are mandatory.
What is the maximum clamping voltage of P6SMB12CAHE3/52 under surge conditions?
The maximum clamping voltage (VC) of P6SMB12CAHE3/52 is 16.7 V, measured at 35.9 A peak pulse current with a 10/1000 μs waveform. This value represents the highest voltage imposed on the protected circuit during worst-case surge events, enabling designers to verify that downstream ICs (e.g., microcontrollers or transceivers) meet or exceed this withstand rating.
How does the SMB (DO-214AA) package of P6SMB12CAHE3/52 compare to SMA (DO-214AC)?
The SMB package of P6SMB12CAHE3/52 measures 3.94 mm × 2.20 mm × 1.52 mm - 20% smaller in footprint and 15% lower profile than SMA (DO-214AC). Its 100 °C/W junction-to-ambient thermal resistance (vs. 140 °C/W for SMA) allows higher sustained power dissipation in dense layouts. Both use matte tin leads, but SMB's tighter pitch improves routing density in multi-layer automotive PCBs.
Can P6SMB12CAHE3/52 be used for IEC 61000-4-5 surge protection?
Yes, P6SMB12CAHE3/52 is rated for 600 W peak pulse power with a 10/1000 μs waveform - directly supporting IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 Ω source impedance) when properly mounted on 0.2" × 0.2" copper pads. Its 16.7 V clamping voltage ensures protected circuits remain within safe operating limits during standardized surge testing, provided layout minimizes trace inductance.
P6SMB12CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
P6SMB12CAHE3/52 FAQ
1.How can I place an order for P6SMB12CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB12CAHE3/52 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 P6SMB12CAHE3/52 reliable?
The price and inventory of P6SMB12CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB12CAHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB12CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB12CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB12CAHE3/52?
P6SMB12CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB12CAHE3/52 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 P6SMB12CAHE3/52?
For technical support, including P6SMB12CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB12CAHE3/52 requirements.
6.How does Aetrix verify that P6SMB12CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB12CAHE3/52 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 P6SMB12CAHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB12CAHE3/52?
All P6SMB12CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB12CAHE3/52, 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 P6SMB12CAHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB12CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB12CAHE3/52 Tags
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