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Vishay General Semiconductor - Diodes Division P6SMB68CAHM3_A/H
- Part No.:
- P6SMB68CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHM3_A/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,088
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Product details
Overview
P6SMB68CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 68 V breakdown voltage (VBR min/max = 64.6–71.4 V), 600 W peak pulse power (10/1000 μs), and clamps to ≤92.0 V at 6.5 A peak pulse current - used in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P6SMB68CAHM3_A/H datasheet, P6SMB68CAHM3_A/H pinout, P6SMB68CAHM3_A/H application, or P6SMB68CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), SMB (DO-214AA) package compatibility, and compliance with IEC 61000-4-2/4-4/4-5 transient immunity requirements.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at 58.1 V stand-off), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature.
The device delivers fast response time (<1.0 ns) and low dynamic impedance, achieving clamping within nanoseconds of transient onset. Its 600 W peak pulse rating is validated under repetitive 0.01% duty cycle conditions with 10/1000 μs waveform, and it meets J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise clamping onset threshold for bidirectional overvoltage events |
| VWM | 58.1 V maximum - reverse stand-off voltage below which leakage remains <1.0 μA, ensuring no interference during normal operation |
| VC @ IPPM | ≤92.0 V at 6.5 A - maximum clamped voltage during 600 W transient, limiting stress on downstream ICs like RS-485 transceivers or microcontrollers |
| PPPM | 600 W (10/1000 μs waveform) - peak surge energy handling capacity suitable for lightning-induced surges per IEC 61000-4-5 |
| TJ max | +150 °C - enables reliable operation in under-hood automotive environments and high-temperature industrial enclosures |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height, compatible with automated placement |
| AEC-Q101 | Qualified (HM3 suffix) - certified for automotive applications including engine control modules and ADAS sensor interfaces |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant. Bidirectional construction means no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | Either terminal serves as anode or cathode depending on transient polarity - enables single-device protection of AC or differential lines without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-component protection of balanced interfaces (e.g., CAN, RS-485, USB D+/D−) without external polarity management |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 3 (1 kV surge) on 2 Ω source impedance, reducing need for cascaded protection stages |
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock - suitable for Tier-1 ECU designs |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage overshoot during fast transients, preserving margin for 3.3 V or 5 V logic-level interface ICs |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling, reducing manufacturing complexity |
Applications
| Automotive Sensor Interface | Industrial RS-485 Communication |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and 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 signal pairs or supply rails to clamp ±100 V transients before they reach MCU analog inputs or transceiver ICs. Use Value: Prevents latch-up or permanent damage to A/D converters and CAN transceivers while maintaining signal integrity during ISO 7637-2 Pulse 1/2a/5a testing. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs and motor drives against ESD and surge events on long cable runs. IC Role / Device Role / Timing Role: Placed between A/B bus lines and ground to suppress common-mode surges up to 4 kV (IEC 61000-4-4/4-5), operating in parallel with common-mode chokes. Use Value: Enables robust communication over 1200 m distances without data corruption or transceiver failure, meeting EN 55032/55035 immunity requirements. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs and DSL line drivers from lightning-induced surges entering via outdoor copper cabling in residential gateways. IC Role / Device Role / Timing Role: Used in conjunction with gas discharge tubes (GDTs) as secondary protection stage, clamping residual transients after primary GDT crowbar action. Use Value: Limits let-through voltage to <100 V, protecting 100BASE-TX magnetics and PHY ICs rated for 125 V absolute maximum. |
Use Scenario: Suppressing fast-switching noise and line surges at the AC-DC adapter input stage in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Mounted across bridge rectifier output or bulk capacitor to absorb turn-on spikes and differential-mode surges from mains switching. Use Value: Extends electrolytic capacitor lifetime by reducing ripple-induced thermal stress and prevents false triggering of overvoltage protection circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA | Same SMB package, 64 V VBR, but lower 400 W PPPM; not AEC-Q101 qualified | Limited to commercial-grade consumer/industrial use; insufficient for automotive surge test margins | Select when cost sensitivity outweighs automotive qualification and 600 W headroom is unnecessary |
| 1.5SMC68CA | Higher 1500 W PPPM, same 68 V VBR, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) | Requires PCB layout change; better suited for high-energy telecom or power supply primary-side protection | Choose when system-level surge tests exceed IEC 61000-4-5 Level 4 and board space permits larger footprint |
Compared with SMAJ64CA and 1.5SMC68CA, P6SMB68CAHM3_A/H uniquely balances AEC-Q101 qualification, 600 W surge capability, and compact SMB footprint - making it optimal for space-constrained automotive and industrial edge nodes where qualification and reliability are non-negotiable.
Availability
P6SMB68CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, and telecom line surge suppression requiring stable component supply across extended production lifecycles.
Supply support for P6SMB68CAHM3_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 application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications systems - engineered for robustness under harsh electrical and thermal conditions with AEC-Q101 and RoHS/halogen-free compliance built-in.
FAQ
What is the breakdown voltage tolerance for P6SMB68CAHM3_A/H?
The P6SMB68CAHM3_A/H has a breakdown voltage (VBR) range of 64.6 V to 71.4 V at 1.0 mA test current, corresponding to a ±5% tolerance around the nominal 68 V rating. This tight tolerance ensures predictable clamping behavior across production lots and temperature ranges, critical for designs where overvoltage margin must be precisely controlled. The specification is verified per ANSI/IEEE C62.35 and applies to both directions due to its bidirectional construction.
Is P6SMB68CAHM3_A/H suitable for automotive applications?
Yes, P6SMB68CAHM3_A/H is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed stress tests including temperature cycling, highly accelerated stress testing (HAST), and mechanical shock - specifically validated for under-hood and chassis-mounted automotive electronics. Its 150 °C maximum junction temperature and robust surge performance make it appropriate for engine control units, ADAS camera modules, and body control modules where reliability under thermal and electrical stress is mandatory.
What does the "CA" suffix indicate in P6SMB68CAHM3_A/H?
The "CA" suffix in P6SMB68CAHM3_A/H designates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical VBR, VWM, and VC characteristics in either direction. This eliminates the need for polarity-aware placement on PCBs and makes it ideal for protecting AC-coupled signals, differential buses (e.g., CAN, RS-485), or ungrounded power rails where voltage reversals may occur during fault conditions.
How does the SMB (DO-214AA) package of P6SMB68CAHM3_A/H compare to SMA or SMC?
The SMB (DO-214AA) package of P6SMB68CAHM3_A/H measures 4.06 mm × 5.59 mm with a 2.20 mm height - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). Its 100 °C/W junction-to-ambient thermal resistance balances power handling and board space efficiency. Unlike SMA, SMB supports higher 600 W pulse ratings; unlike SMC, it avoids excessive footprint for mid-power applications - making P6SMB68CAHM3_A/H optimal for dense layouts in automotive ECUs and industrial controllers where thermal and spatial constraints coexist.
What is the maximum leakage current for P6SMB68CAHM3_A/H at rated stand-off voltage?
At its maximum reverse stand-off voltage (VWM) of 58.1 V, the P6SMB68CAHM3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance sensor interfaces or battery-powered systems. Leakage remains well below 10 μA even at elevated temperatures up to 85 °C, supporting stable operation in ambient conditions typical of industrial and automotive environments.
P6SMB68CAHM3_A/H 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB68CAHM3_A/H FAQ
1.How can I place an order for P6SMB68CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHM3_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 P6SMB68CAHM3_A/H reliable?
The price and inventory of P6SMB68CAHM3_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 P6SMB68CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHM3_A/H?
P6SMB68CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHM3_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 P6SMB68CAHM3_A/H?
For technical support, including P6SMB68CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHM3_A/H requirements.
6.How does Aetrix verify that P6SMB68CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHM3_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 P6SMB68CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHM3_A/H?
All P6SMB68CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHM3_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 P6SMB68CAHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB68CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHM3_A/H Tags
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