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Vishay General Semiconductor - Diodes Division TPSMP27AHE3/85A
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- Part No.:
- TPSMP27AHE3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP27AHE3/85A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,443
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Product details
Overview
TPSMP27AHE3/85A from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, with 25.7–28.4 V breakdown voltage (VBR), 37.5 V clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating for VBR ≥13 V. It is AEC-Q101 qualified and used to protect sensor signal lines and drive transistors in automotive ECUs.
For engineers reviewing the TPSMP27AHE3/85A datasheet, TPSMP27AHE3/85A pinout, TPSMP27AHE3/85A application, or TPSMP27AHE3/85A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, unidirectional polarity, RoHS-compliant matte tin terminations, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, activated when reverse voltage exceeds its specified VBR range (25.7–28.4 V). Its patented PAR oxide-passivated chip construction ensures low incremental surge resistance and fast response time (<1 ns), critical for suppressing ESD and load-dump transients in automotive environments.
Designed for surface-mount placement on FR-4 PCBs with 5.0 × 5.0 mm copper pads per terminal, it delivers 400 W peak pulse power (10/1000 µs waveform) at TA = 25 °C and maintains stable clamping up to TJ = 185 °C, with temperature coefficient of VBR at +0.096 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V - defines precise avalanche turn-on threshold for reliable overvoltage triggering |
| VC @ IPPM | 37.5 V at 10.7 A - maximum clamped voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 400 W - peak pulse power handling for VBR ≥13 V, enabling robust protection against ISO 7637-2 pulses |
| IFSM | 40 A - non-repetitive forward surge current rating, supporting high-energy transient suppression |
| TJ max. | +185 °C - maximum junction temperature, allowing operation in under-hood automotive locations |
| VWM | 23.1 V - maximum working voltage, ensuring no conduction during normal 24 V system operation |
| IR @ VWM | 1.0 µA - ultra-low reverse leakage at stand-off voltage, minimizing standby power loss |
Pinout & Package
Package: DO-220AA (SMP), molded in UL 94 V-0 rated compound, 1.0 mm typical height, matte tin-plated leads compliant with J-STD-002 and JESD22-B102. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return in unidirectional clamp configuration |
| Cathode | Protected line connection / surge input | Connected to signal/power line requiring protection; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable avalanche characteristics and long-term reliability under repeated surge stress |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without preconditioning or special handling |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock |
| Low profile (1.0 mm height) | Enables compact layout in space-constrained modules such as ADAS camera ECUs and body control units |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling, critical for long-life automotive deployments |
Applications
| Automotive Sensor Protection | Power Line Transient Suppression |
|---|---|
Use Scenario: Protecting LIN/CAN bus interface pins and analog sensor outputs (e.g., pressure, temperature) in engine control modules exposed to ISO 16750-2 load dump. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and ground, triggered only during overvoltage events. Use Value: Limits clamped voltage to 37.5 V, preventing damage to 3.3 V/5 V microcontrollers and ADC inputs while maintaining signal integrity during normal operation. | Use Scenario: Safeguarding 24 V supply rails in body electronics modules (e.g., door control units) against battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Standoff device operating below 23.1 V nominal, clamping transients above 25.7 V within nanoseconds. Use Value: Withstands 400 W peak pulse power and 40 A surge current, meeting ISO 7637-2 Pulse 5a requirements without derating at +85 °C ambient. |
| Industrial Motor Drive Inputs | Automotive Lighting Control |
Use Scenario: Shielding gate driver inputs and feedback sensing lines in BLDC motor controllers subject to inductive switching noise and back-EMF spikes. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp placed at signal entry point before isolation barrier or level-shifter. Use Value: Sub-1 ns response time and 0.096 %/°C VBR tempco ensure consistent clamping across -40 °C to +125 °C operating range. | Use Scenario: Protecting PWM dimming inputs and LED driver enable lines in adaptive front lighting systems (AFS) subjected to ESD and conducted RF interference. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) standoff protector preserving signal fidelity during 100 kHz PWM operation. Use Value: 1.0 mm profile allows placement directly at connector interface on dense LED module PCBs without height interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A-E3/5AT | DO-214AC (SMA) package, 28.0–31.0 V VBR, 400 W PPPM, but 2.2 mm height and no AEC-Q101 qualification | Not automotive-qualified; suitable for industrial/commercial designs where qualification is not mandated | Select SMAJ28A-E3/5AT only if AEC-Q101 compliance is unnecessary and board height budget permits 2.2 mm profile |
| TPSMP28AHE3/85A | Same DO-220AA package, AEC-Q101 qualified, VBR = 26.6–29.4 V, VC = 38.9 V @ 10.3 A - slightly higher clamping and tighter VBR tolerance | Direct family variant with marginally improved voltage matching for 28 V nominal systems | Choose TPSMP28AHE3/85A when tighter VBR distribution or lower clamping drift is required for 28 V rail protection |
Compared with SMAJ28A-E3/5AT, TPSMP27AHE3/85A offers automotive qualification and lower profile; versus TPSMP28AHE3/85A, it provides lower VBR and VC, making it better suited for 24 V systems needing earlier clamping onset and reduced let-through voltage.
Availability
TPSMP27AHE3/85A is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor control, and sensor interface protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMP27AHE3/85A 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 automotive-grade validation.
The TPSMP series belongs to Vishay's eSMP™ family of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant transient protection in harsh automotive environments including powertrain, chassis, and ADAS subsystems.
FAQ
What is the breakdown voltage range of the TPSMP27AHE3/85A?
The TPSMP27AHE3/85A has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures predictable turn-on behavior in 24 V automotive systems where early clamping is critical to prevent downstream IC damage.
Is the TPSMP27AHE3/85A suitable for lead-free reflow soldering?
Yes, the TPSMP27AHE3/85A is rated for MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, fully compatible with standard lead-free soldering processes without preconditioning or dry-pack requirements.
Does the TPSMP27AHE3/85A meet automotive qualification standards?
Yes, the TPSMP27AHE3/85A carries AEC-Q101 qualification, verified through stress tests including temperature cycling, high-temperature operating life, and mechanical shock. The HE3 suffix further confirms high-reliability automotive grade per Vishay's internal specifications.
What is the clamping voltage of the TPSMP27AHE3/85A under surge conditions?
The TPSMP27AHE3/85A clamps to a maximum of 37.5 V at 10.7 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C with 5.0 × 5.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the TPSMP27AHE3/85A differ from the standard TPSMP27AHE3/84A?
The TPSMP27AHE3/85A differs from TPSMP27AHE3/84A solely in packaging: both share identical electrical and thermal specifications, but the /85A variant ships in 13-inch tape-and-reel format (10,000 units/reel), whereas /84A uses 7-inch reels (3,000 units/reel), enabling higher-volume automated assembly throughput.
TPSMP27AHE3/85A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
TPSMP27AHE3/85A FAQ
1.How can I place an order for TPSMP27AHE3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP27AHE3/85A 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 TPSMP27AHE3/85A reliable?
The price and inventory of TPSMP27AHE3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP27AHE3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP27AHE3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP27AHE3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP27AHE3/85A?
TPSMP27AHE3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP27AHE3/85A 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 TPSMP27AHE3/85A?
For technical support, including TPSMP27AHE3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP27AHE3/85A requirements.
6.How does Aetrix verify that TPSMP27AHE3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP27AHE3/85A 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 TPSMP27AHE3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP27AHE3/85A?
All TPSMP27AHE3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP27AHE3/85A, 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 TPSMP27AHE3/85A part is unused and in its original packaging.
Return procedure for TPSMP27AHE3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP27AHE3/85A Tags
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