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Diodes Incorporated P6SMAJ85ADFQ-13
- Part No.:
- P6SMAJ85ADFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
P6SMAJ85ADFQ-13.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR D-F
- Quantity:
- Payment:
- Shipping:
Inventory:4,902
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Product details
Overview
P6SMAJ85ADFQ-13 from Diodes Incorporated is an AEC-Q101 qualified, 600W surface-mount transient voltage suppressor (TVS) diode in the D-FLAT package, designed for automotive-grade overvoltage protection. It features a reverse standoff voltage of 85.0 V, breakdown voltage range of 94.4–108.2 V at 1.0 mA test current, clamping voltage of 137.0 V at 4.4 A peak pulse current, and is optimized for ESD and surge immunity in 12 V/24 V vehicle subsystems including infotainment power rails and CAN transceiver interfaces.
For engineers reviewing the P6SMAJ85ADFQ-13 datasheet, P6SMAJ85ADFQ-13 pinout, P6SMAJ85ADFQ-13 application, or P6SMAJ85ADFQ-13 equivalent, this device is selected for high-reliability automotive electronics where low-profile packaging, IATF16949 manufacturing traceability, and precise clamping performance under ISO 7637-2 pulse 1/2a/3a conditions are critical.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping protector with cathode-anode polarity, responding to transient overvoltages within <1 ps. Its glass-passivated junction ensures stable breakdown behavior across -55°C to +150°C operating temperature, and its low thermal resistance (RθJT = 57°C/W on 0.4" × 0.5" FR-4 pad) supports sustained energy dissipation during repetitive surges.
The device conforms to ISO 16750-2 and IEC 61000-4-2/4-5 standards for automotive EMC robustness. Its 137.0 V clamping voltage at 4.4 A (10/1000 µs waveform) provides defined overvoltage limiting for downstream 100 V-rated MOSFETs or CAN FD transceivers, while its 1.0 µA max reverse leakage at 85 V ensures minimal standby power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - Sustains single 10/1000 µs transients up to 600 W without failure, enabling compliance with ISO 7637-2 Pulse 1 (inductive load dump) in 24 V systems. |
| Reverse Standoff Voltage | 85.0 V - Maximum continuous DC or RMS voltage before clamping initiates; matches nominal 24 V system rail with 3.5× safety margin. |
| Breakdown Voltage | 94.4–108.2 V @ 1.0 mA - Tight VBR window ensures consistent turn-on across production lots and temperature, minimizing design margin uncertainty. |
| Clamping Voltage | 137.0 V @ 4.4 A - Limits transient voltage seen by protected ICs to ≤137 V, safeguarding 150 V-rated components such as gate drivers or power management ICs. |
| Package | D-FLAT - 2.25–2.95 mm width, 3.95–4.60 mm length, 0.90–1.10 mm height; enables high-density placement near connectors or power entry points. |
| AEC-Q101 Qualified | Yes - Validated for automotive use with PPAP capability and manufactured in IATF16949:2016 certified facilities, supporting Tier-1 BOM inclusion. |
Pinout & Package
Package: D-FLAT surface-mount package with cathode band marking; molded plastic case (UL 94V-0), matte tin annealed terminals, 0.035 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink node | Connected to protected line (e.g., CAN_H); conducts surge current to ground when voltage exceeds VBR. |
| 2 (Anode) | Reference/ground return path | Must be tied to low-inductance chassis or power ground plane to minimize clamping overshoot during fast transients. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile D-FLAT package | Height ≤1.10 mm - Enables placement under connectors or in space-constrained engine control unit (ECU) modules without mechanical interference. |
| Glass-passivated die construction | Stable VBR drift <±5% over lifetime - Ensures long-term clamping consistency in under-hood environments subject to thermal cycling. |
| Fast response time | <1 ps - Activates before most semiconductor junctions experience avalanche damage, protecting sensitive analog front-ends and microcontroller I/O. |
| AEC-Q101 qualification & PPAP support | Full automotive change control - Eliminates requalification effort when integrating into OEM-approved designs or Tier-1 production programs. |
Applications
| Automotive Infotainment Power Rail Protection | CAN FD Transceiver Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients and ESD events on 12 V power inputs to head-unit mainboards. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed directly at power connector entry point, ahead of DC-DC converters and PMICs. Use Value: Clamps 85 V standoff to 137 V during 600 W pulses, preventing overvoltage damage to 5 V/3.3 V LDOs and SoCs rated for ≤150 V absolute maximum. |
Use Scenario: Protects high-speed CAN FD data lines (CAN_H/CAN_L) against ISO 16750-2 coupled surges and contact ESD. IC Role / Device Role / Timing Role: Unidirectional TVS connected between CAN_H and ground, leveraging low capacitance (<10 pF at 0 V) to preserve signal integrity up to 5 Mbps. Use Value: Maintains <1.0 µA leakage at 85 V, avoiding bus bias shift; clamps ESD spikes to <137 V without distorting differential signaling. |
| Body Control Module (BCM) Sensor Supply Protection | ADAS Camera Power Input Protection |
|
Use Scenario: Shields 5 V sensor supply rails (e.g., for ambient light or rain sensors) from battery reverse-polarity and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on regulated output of BCM's internal LDO, sized for 600 W non-repetitive surges per ISO 7637-2 Pulse 2b. Use Value: Withstands 60 A forward surge (8.3 ms half-sine), surviving repeated jump-start events without degradation in clamping performance. |
Use Scenario: Guards 12 V input to automotive camera modules against ignition noise and alternator ripple-induced spikes. IC Role / Device Role / Timing Role: First-line TVS at camera module edge connector, mounted on compact 2-layer PCB with minimal copper area. Use Value: D-FLAT footprint allows placement within 2 mm of connector; RθJT = 57°C/W ensures thermal stability during sustained 12 V rail surges in parking mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ85A-Q | Same 85 V standoff, but not AEC-Q101 qualified; RθJA = 115°C/W (vs. 92°C/W for P6SMAJ85ADFQ-13). | Limited to industrial or consumer applications; lacks PPAP documentation and IATF16949 traceability. | Select only for cost-sensitive non-automotive designs where automotive qualification is unnecessary. |
| 1.5SMC85A | Higher 1500 W rating but larger SMC package (7.11 × 6.22 mm); clamping voltage 137 V same, but VF = 3.5 V at 35 A. | Requires more board area; suitable for higher-energy surges but incompatible with D-FLAT layout constraints. | Choose only when 600 W is insufficient and board space permits larger footprint. |
Compared with SMAJ85A-Q and 1.5SMC85A, P6SMAJ85ADFQ-13 uniquely delivers automotive qualification, superior thermal performance in compact form factor, and guaranteed manufacturability for Tier-1 production-making it the sole choice for space-constrained, AEC-compliant 24 V system protection.
Availability
P6SMAJ85ADFQ-13 is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, and ADAS camera power inputs requiring stable component supply, full traceability, and zero-defect reliability under IATF16949 processes.
Supply support for P6SMAJ85ADFQ-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-reliability protection, power management, and signal integrity solutions for automotive, industrial, and computing markets.
The P6SMAJ series belongs to Diodes' AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in harsh automotive environments-including under-hood ECUs, infotainment head units, and ADAS sensor modules.
FAQ
What is the maximum clamping voltage of P6SMAJ85ADFQ-13 under standard test conditions?
The maximum clamping voltage is 137.0 V, measured at a peak pulse current (IPP) of 4.4 A using the 10/1000 µs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (-55°C to +150°C) and defines the upper voltage limit imposed on protected circuitry during transient events.
Is P6SMAJ85ADFQ-13 compatible with lead-free reflow soldering processes?
Yes. The device features a matte tin annealed finish over copper lead-frame and is fully compatible with standard Pb-free reflow profiles, including peak temperatures up to 260°C. It meets J-STD-020 moisture sensitivity level 1 and requires no pre-bake prior to assembly.
How does the D-FLAT package affect thermal performance compared to SMA or SMB packages?
The D-FLAT package achieves RθJT = 57°C/W on a 0.4" × 0.5" FR-4 pad-significantly lower than typical SMA (RθJT ≈ 80°C/W) due to its wider copper contact area and shorter thermal path. This enables higher sustained power handling in confined layouts without external heatsinking.
Can P6SMAJ85ADFQ-13 be used in bidirectional configurations?
No. It is a unidirectional TVS diode with cathode-anode polarity, intended for DC rail protection where polarity is fixed. For AC or bidirectional signal line protection (e.g., USB, RS-485), a dedicated bidirectional variant such as P6SMBJ85CA-13 must be selected instead.
P6SMAJ85ADFQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 2-SMD, Flat Leads
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85V
- Voltage - Breakdown (Min):
- 94.4V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-Flat
P6SMAJ85ADFQ-13 FAQ
1.How can I place an order for P6SMAJ85ADFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMAJ85ADFQ-13 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 P6SMAJ85ADFQ-13 reliable?
The price and inventory of P6SMAJ85ADFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMAJ85ADFQ-13 is usually 5 days.
3.What payment methods are accepted for P6SMAJ85ADFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMAJ85ADFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMAJ85ADFQ-13?
P6SMAJ85ADFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMAJ85ADFQ-13 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 P6SMAJ85ADFQ-13?
For technical support, including P6SMAJ85ADFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMAJ85ADFQ-13 requirements.
6.How does Aetrix verify that P6SMAJ85ADFQ-13 is sourced from the original manufacturer or authorized distributors?
All P6SMAJ85ADFQ-13 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 P6SMAJ85ADFQ-13 meets industry standards.
7.What is the process for return or replacement of P6SMAJ85ADFQ-13?
All P6SMAJ85ADFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMAJ85ADFQ-13, 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 P6SMAJ85ADFQ-13 part is unused and in its original packaging.
Return procedure for P6SMAJ85ADFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMAJ85ADFQ-13 Tags
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