My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB68CAHM3/I
- Part No.:
- P6SMB68CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHM3/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,119
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB68CAHM3/I 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 or 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 protection, industrial I/O interfaces, and telecom line surge suppression.
For engineers reviewing the P6SMB68CAHM3/I datasheet, P6SMB68CAHM3/I pinout, P6SMB68CAHM3/I application, or P6SMB68CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-4/4-5 transient immunity requirements.
Technical Context
This TVS diode operates symmetrically in both polarities due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM = 58.1 V) and fast response time (<1.0 ns), critical for suppressing ESD and lightning-induced surges before downstream IC damage occurs.
The device is rated for 150 °C maximum junction temperature and exhibits a low thermal resistance (RθJL = 20 °C/W) when mounted per recommended 0.2" × 0.2" copper pads. Its MSL Level 1 rating (JEDEC J-STD-020) and halogen-free, RoHS-compliant construction support high-reliability automated assembly in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - defines guaranteed clamping onset range under 1 mA test current; ensures consistent overvoltage triggering across production lots |
| VWM | 58.1 V - maximum continuous reverse operating voltage; must exceed normal signal swing to avoid leakage or conduction during steady-state operation |
| VC @ IPPM | ≤92.0 V at 6.5 A - clamped voltage during 10/1000 μs surge; determines residual stress on protected ICs like CAN transceivers or ADC inputs |
| PPPM | 600 W - peak pulse power handling with 0.01% duty cycle; supports repetitive surge events in motor drive feedback loops or PoE interfaces |
| IPPM | 6.5 A - peak pulse current capacity at VC; directly correlates with surge energy absorption (≈0.065 J for 10/1000 μs waveform) |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures without derating |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 2.2 mm height and 3.94 mm length; compatible with standard SMT pick-and-place and reflow profiles |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals function identically; current flows bidirectionally during overvoltage events - no orientation required during PCB placement |
| Case (body) | Thermal interface | Exposed metal slug provides primary heat dissipation path to PCB copper; requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal per datasheet fig. 2 |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 24 V industrial buses without external series impedance |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock - suitable for ADAS sensor modules and body control units |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-204; eliminates brominated flame retardants for safer end-of-life processing |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without moisture-induced popcorning; eliminates pre-bake requirement in high-volume SMT lines |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD contact discharge), reducing risk of latch-up in CMOS interfaces |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role: Bidirectional clamping element placed between sensor output and microcontroller ADC input or LIN transceiver. Use Value: Limits transient voltage to ≤92.0 V while maintaining <1.0 μA leakage at 58.1 V operating voltage - preserving signal integrity and preventing ADC saturation or transceiver latch-up. | Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring surges and ESD events. IC Role / Device Role: Primary overvoltage clamp across input terminals, upstream of precision op-amp conditioning circuitry. Use Value: Absorbs up to 600 W surge energy without degradation, ensuring long-term stability of 0.1% measurement accuracy in harsh factory environments. |
| Telecom Line Interface | Consumer USB Port ESD |
Use Scenario: Safeguarding RS-485 transceivers in base station backhaul links exposed to induced lightning surges on outdoor cabling. IC Role / Device Role: Differential-mode TVS pair (one per line) referenced to ground, providing common-mode and differential-mode transient suppression. Use Value: Symmetrical 64.6–71.4 V breakdown ensures balanced clamping on A/B lines, preventing data corruption during 10/1000 μs surges up to 6.5 A. | Use Scenario: Adding secondary-level ESD protection to USB 2.0 data lines (D+/D−) in smart home hubs where internal SoC ESD diodes are insufficient. IC Role / Device Role: Low-capacitance bidirectional clamp placed immediately at connector, shunting >8 kV HBM ESD strikes to ground. Use Value: Sub-1 ns response time and ≤92.0 V clamping prevent bit errors or PHY reset during real-world plug/unplug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA | Lower peak power (400 W), same SMB package, VBR = 60.8–67.2 V, non-AEC-Q101 | Limited to commercial-grade industrial or consumer use; not validated for automotive temperature cycling or humidity testing | Select when cost sensitivity outweighs automotive qualification needs and surge energy is ≤400 W |
| SMCJ64CA | Higher peak power (1500 W), larger SMC (DO-214AB) package, VBR = 60.8–67.2 V, AEC-Q101 available (HM3 variant) | Requires PCB layout change due to 7.11 mm length vs. SMB's 3.94 mm; better suited for high-energy 48 V systems | Choose for 48 V battery systems or where 1500 W surge margin is mandatory, accepting larger footprint |
Compared with SMAJ64CA and SMCJ64CA, P6SMB68CAHM3/I delivers optimal balance of AEC-Q101 qualification, 600 W surge capability, and compact SMB footprint - making it the preferred choice for space-constrained automotive and industrial designs requiring certified reliability without board redesign.
Availability
P6SMB68CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line interface circuits requiring stable component supply, AEC-Q101 traceability, and halogen-free compliance.
Supply support for P6SMB68CAHM3/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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The P6SMB series is engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial automation, and telecommunications applications where sustained surge immunity and long-term parametric stability are critical.
FAQ
What does the "CA" suffix indicate in P6SMB68CAHM3/I?
The "CA" suffix in P6SMB68CAHM3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. This allows it to protect AC-coupled signals, differential buses (e.g., RS-485), or ungrounded interfaces without polarity concerns - unlike unidirectional variants (e.g., P6SMB68AHM3/I) that require correct cathode orientation. The P6SMB68CAHM3/I has no polarity marking on the SMB package body.
Is P6SMB68CAHM3/I qualified to AEC-Q101, and what does the "HM3" suffix confirm?
Yes, P6SMB68CAHM3/I is AEC-Q101 qualified. The "HM3" suffix explicitly indicates halogen-free, RoHS-compliant construction combined with full AEC-Q101 stress testing - including temperature cycling, high-accelerated stress test (HAST), and mechanical shock. This certification validates its suitability for automotive applications such as engine control units, ADAS sensors, and body electronics where long-term reliability under thermal and vibration stress is mandatory.
What is the maximum clamping voltage of P6SMB68CAHM3/I, and how does it impact protected circuit design?
The maximum clamping voltage (VC) of P6SMB68CAHM3/I is 92.0 V at 6.5 A peak pulse current (10/1000 μs waveform). This value defines the highest voltage seen by downstream components during a surge event. Designers must ensure that the absolute maximum ratings of protected ICs - such as CAN transceivers (typically 70 V) or microcontroller I/O pins (often 5.5 V or 3.6 V) - are not exceeded even at this clamped level, typically by adding series impedance or selecting higher-voltage-rated devices when using P6SMB68CAHM3/I on 48 V or higher rails.
Can P6SMB68CAHM3/I be used in place of a unidirectional TVS like P6SMB68AHM3/I?
No - P6SMB68CAHM3/I is bidirectional and cannot substitute for unidirectional types like P6SMB68AHM3/I in DC-biased circuits where reverse conduction would cause malfunction. For example, placing P6SMB68CAHM3/I across a 24 V supply rail would conduct continuously during normal operation due to its symmetrical structure, whereas P6SMB68AHM3/I blocks reverse current. Use P6SMB68CAHM3/I only in AC, differential, or floating signal paths; verify polarity requirements before replacement.
What PCB layout guidance applies to P6SMB68CAHM3/I for optimal thermal and electrical performance?
Per Vishay's datasheet, P6SMB68CAHM3/I requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and maintain RθJL = 20 °C/W. Avoid narrow traces between the device and ground/power planes; use multiple thermal vias under each pad to inner-layer copper pours. Keep high-dI/dt surge return paths short and direct to minimize inductive voltage overshoot - especially critical for ESD protection on high-speed lines where P6SMB68CAHM3/I's sub-1 ns response must not be compromised by layout parasitics.
P6SMB68CAHM3/I 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):
- 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/I FAQ
1.How can I place an order for P6SMB68CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHM3/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 P6SMB68CAHM3/I reliable?
The price and inventory of P6SMB68CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHM3/I?
P6SMB68CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHM3/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 P6SMB68CAHM3/I?
For technical support, including P6SMB68CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHM3/I requirements.
6.How does Aetrix verify that P6SMB68CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHM3/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 P6SMB68CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHM3/I?
All P6SMB68CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHM3/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 P6SMB68CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB68CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHM3/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
