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Vishay General Semiconductor - Diodes Division P6SMB15CAHM3/H
- Part No.:
- P6SMB15CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15CAHM3/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB15CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 15 V standoff voltage (VWM), 21.2 V maximum clamping voltage (VC) at 28.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB15CAHM3/H datasheet, P6SMB15CAHM3/H pinout, P6SMB15CAHM3/H application, or P6SMB15CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding its breakdown threshold (14.3–15.8 V at 1 mA), it rapidly transitions to low-impedance conduction, diverting surge current away from downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity sensitivity.
Thermally, it sustains 150 °C maximum junction temperature with 100 °C/W junction-to-ambient thermal resistance under standard PCB mounting. The glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns), while MSL Level 1 rating confirms suitability for lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping onset. |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Voltage at which device enters avalanche conduction; ensures predictable turn-on across temperature and unit variation. |
| VC (Clamping) | 21.2 V at 28.3 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines minimum IC withstand rating required. |
| PPPM | 600 W - Surge energy handling capacity per pulse; supports repetitive transients up to 0.01% duty cycle without degradation. |
| IPPM | 28.3 A - Maximum non-repetitive surge current the device can safely clamp; sets minimum trace/solder joint robustness requirements. |
| TJ max. | 150 °C - Maximum allowable junction temperature; constrains thermal design when operating near PD = 5.0 W derated above 25 °C. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint; compatible with standard 7" tape-and-reel (H) delivery mode. |
Pinout & Package
SMB (DO-214AA) package: molded plastic body with matte tin-plated leads, no polarity marking for bidirectional operation, compliant with J-STD-002 solderability and JESD22-B102 whisker testing (Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction - either terminal serves as anode or cathode depending on instantaneous polarity of transient; enables AC line protection without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control, ADAS, and infotainment power rails. |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1 - supports lead-free reflow assembly and environmental compliance for global OEM programs. |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges without failure when mounted per recommended 0.2" × 0.2" copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on protected ICs - e.g., clamps 21.2 V while maintaining 15 V nominal rail integrity during ESD or load dump events. |
| Glass-passivated junction | Ensures stable leakage (<1.0 μA at 12.8 V) and long-term parameter stability across 1000+ hours HTOL testing at 125 °C. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 60 V, 100 ms) on 12 V battery-fed ECUs in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Shunt TVS placed upstream of DC/DC converters and microcontroller power inputs to limit voltage excursion during alternator regulation failure. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies by clamping peak voltage to ≤21.2 V during 28.3 A surge events. |
Use Scenario: Protects analog front-end inputs of pressure, temperature, and position sensors exposed to ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional clamping element across differential signal pairs (e.g., RS-485, CAN FD) to maintain signal integrity during ±8 kV contact ESD per IEC 61000-4-2. Use Value: Enables reliable operation without signal distortion or false triggering due to sub-1 ns response and <1.0 μA leakage at 12.8 V standby. |
| Consumer Audio Equipment Surge Suppression | Telecom Line Interface Transient Protection |
Use Scenario: Shields speaker amplifier outputs and codec inputs in smart speakers and AV receivers from lightning-induced surges on AC mains and audio interconnects. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at board edge connectors to absorb fast-rising transients before reaching sensitive Class-D amplifiers or ADCs. Use Value: Maintains THD+N <0.01% by avoiding parasitic coupling - enabled by DO-214AA package's minimal junction capacitance (<100 pF at 0 V). |
Use Scenario: Safeguards Ethernet PHYs and DSL line drivers against induced surges from nearby power lines or lightning strikes in residential gateways and base stations. IC Role / Device Role / Timing Role: Primary-level protector on RJ-45 magnetics secondary side, coordinated with gas discharge tubes for multi-stage telecom surge immunity. Use Value: Achieves IEC 61000-4-5 Level 4 (4 kV line-earth) compliance with single-device solution due to 600 W rating and 21.2 V clamping ceiling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CA | Same VWM (12.8 V) and VC (24.4 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 load dump or IEC 61000-4-5 surge. | Select SMAJ15CA only when space-constrained layouts preclude SMB and surge energy remains below 400 W. |
| SMCJ15CA | Higher PPPM (1500 W), same VWM/VC, larger SMC (DO-214AB) package; RθJA = 65 °C/W improves thermal margin. | Supports heavier-duty industrial surge standards (e.g., IEC 61000-4-5 Level 5) but requires 30% larger PCB area and different tape/reel logistics. | Choose SMCJ15CA when system-level surge testing exceeds 600 W or junction temperature must stay <125 °C under sustained 5 W dissipation. |
Compared with SMAJ15CA, P6SMB15CAHM3/H delivers 50% higher surge energy handling in the same industry-standard SMB footprint; versus SMCJ15CA, it trades 60% smaller board area for reduced thermal headroom - making it optimal for cost-sensitive automotive modules where 600 W compliance and AEC-Q101 are mandatory.
Availability
P6SMB15CAHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, consumer audio equipment, and telecom line interface designs requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P6SMB15CAHM3/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, MOSFETs, and passive components with emphasis on high-reliability, automotive-qualified, and energy-efficient solutions.
The P6SMB Series targets board-level transient protection in harsh environments, engineered specifically for AEC-Q101 compliance, automated SMT assembly, and robust clamping performance across -65 °C to +150 °C operation.
FAQ
What does the "CA" suffix indicate in P6SMB15CAHM3/H?
The "CA" suffix in P6SMB15CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions without polarity dependence. This is essential for protecting AC-coupled circuits, differential buses like RS-485, or ungrounded signal lines where voltage polarity reverses. Unlike unidirectional variants (e.g., P6SMB15A), P6SMB15CAHM3/H has no cathode marking and exhibits identical VBR, VWM, and VC in either direction.
Is P6SMB15CAHM3/H qualified for automotive use?
Yes, P6SMB15CAHM3/H is AEC-Q101 qualified - verified per stress test conditions including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. The "HM3" suffix explicitly indicates halogen-free, RoHS-compliant construction with AEC-Q101 validation, making P6SMB15CAHM3/H suitable for under-hood and cabin electronics such as body control modules, infotainment power supplies, and ADAS camera interfaces.
What is the maximum clamping voltage of P6SMB15CAHM3/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB15CAHM3/H is 21.2 V when subjected to a 10/1000 μs waveform peak pulse current of 28.3 A. This value is measured at the device terminals under standardized test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads), and represents the highest voltage that will appear across protected circuitry during a worst-case transient event - critical for ensuring downstream ICs rated for ≤24 V operation remain within safe limits.
How does the SMB (DO-214AA) package of P6SMB15CAHM3/H compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of P6SMB15CAHM3/H offers a balanced trade-off: larger than SMA (DO-214AC) for better thermal dissipation (RθJA = 100 °C/W vs. 140 °C/W) yet smaller than SMC (DO-214AB) for compact layout (0.220" × 0.130" vs. 0.285" × 0.180"). Its 600 W rating matches SMCJ-class performance in 30% less board area, and its MSL Level 1 rating guarantees compatibility with standard lead-free reflow profiles - a key advantage over many SMA variants not rated for 260 °C peak.
Can P6SMB15CAHM3/H be used in place of unidirectional TVS diodes like P6SMB15A?
No - P6SMB15CAHM3/H is strictly bidirectional and cannot replace unidirectional devices like P6SMB15A in DC-biased applications where forward conduction must be blocked. While both share identical VWM (12.8 V) and VC (21.2 V), P6SMB15A conducts only in reverse bias and blocks forward current, whereas P6SMB15CAHM3/H conducts symmetrically. Substituting P6SMB15CAHM3/H for P6SMB15A on a DC rail would cause short-circuit failure; always verify polarity requirements before selecting P6SMB15CAHM3/H.
P6SMB15CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- 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)
P6SMB15CAHM3/H FAQ
1.How can I place an order for P6SMB15CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15CAHM3/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 P6SMB15CAHM3/H reliable?
The price and inventory of P6SMB15CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15CAHM3/H is usually 5 days.
3.What payment methods are accepted for P6SMB15CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15CAHM3/H?
P6SMB15CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15CAHM3/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 P6SMB15CAHM3/H?
For technical support, including P6SMB15CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15CAHM3/H requirements.
6.How does Aetrix verify that P6SMB15CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB15CAHM3/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 P6SMB15CAHM3/H meets industry standards.
7.What is the process for return or replacement of P6SMB15CAHM3/H?
All P6SMB15CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15CAHM3/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 P6SMB15CAHM3/H part is unused and in its original packaging.
Return procedure for P6SMB15CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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